diff --git a/src/test/mir-opt/instrument_coverage.main.InstrumentCoverage.diff b/src/test/mir-opt/instrument_coverage.main.InstrumentCoverage.diff
index 03affed0505ea..800754542d936 100644
--- a/src/test/mir-opt/instrument_coverage.main.InstrumentCoverage.diff
+++ b/src/test/mir-opt/instrument_coverage.main.InstrumentCoverage.diff
@@ -9,40 +9,40 @@
   
       bb0: {
 +         Coverage::Counter(0) for /the/src/instrument_coverage.rs:10:11 - 16:2; // scope 0 at /the/src/instrument_coverage.rs:11:5: 15:6
-          falseUnwind -> [real: bb1, cleanup: bb2]; // scope 0 at /the/src/instrument_coverage.rs:11:5: 15:6
+          falseUnwind -> [real: bb1, cleanup: bb6]; // scope 0 at /the/src/instrument_coverage.rs:11:5: 15:6
       }
   
       bb1: {
           StorageLive(_2);                 // scope 0 at /the/src/instrument_coverage.rs:12:12: 12:17
-          _2 = bar() -> [return: bb3, unwind: bb2]; // scope 0 at /the/src/instrument_coverage.rs:12:12: 12:17
+          _2 = bar() -> [return: bb2, unwind: bb6]; // scope 0 at /the/src/instrument_coverage.rs:12:12: 12:17
                                            // mir::Constant
                                            // + span: /the/src/instrument_coverage.rs:12:12: 12:15
                                            // + literal: Const { ty: fn() -> bool {bar}, val: Value(Scalar(<ZST>)) }
       }
   
-      bb2 (cleanup): {
-          resume;                          // scope 0 at /the/src/instrument_coverage.rs:10:1: 16:2
+      bb2: {
+          FakeRead(ForMatchedPlace, _2);   // scope 0 at /the/src/instrument_coverage.rs:12:12: 12:17
+          switchInt(_2) -> [false: bb4, otherwise: bb3]; // scope 0 at /the/src/instrument_coverage.rs:12:9: 14:10
       }
   
       bb3: {
-          FakeRead(ForMatchedPlace, _2);   // scope 0 at /the/src/instrument_coverage.rs:12:12: 12:17
-          switchInt(_2) -> [false: bb5, otherwise: bb4]; // scope 0 at /the/src/instrument_coverage.rs:12:9: 14:10
+          falseEdge -> [real: bb5, imaginary: bb4]; // scope 0 at /the/src/instrument_coverage.rs:12:9: 14:10
       }
   
       bb4: {
-          falseEdge -> [real: bb6, imaginary: bb5]; // scope 0 at /the/src/instrument_coverage.rs:12:9: 14:10
-      }
-  
-      bb5: {
           _1 = const ();                   // scope 0 at /the/src/instrument_coverage.rs:12:9: 14:10
           StorageDead(_2);                 // scope 0 at /the/src/instrument_coverage.rs:15:5: 15:6
           goto -> bb0;                     // scope 0 at /the/src/instrument_coverage.rs:11:5: 15:6
       }
   
-      bb6: {
+      bb5: {
           _0 = const ();                   // scope 0 at /the/src/instrument_coverage.rs:13:13: 13:18
           StorageDead(_2);                 // scope 0 at /the/src/instrument_coverage.rs:15:5: 15:6
           return;                          // scope 0 at /the/src/instrument_coverage.rs:16:2: 16:2
       }
+  
+      bb6 (cleanup): {
+          resume;                          // scope 0 at /the/src/instrument_coverage.rs:10:1: 16:2
+      }
   }
   
diff --git a/src/test/run-make-fulldeps/instrument-coverage-cov-reports-base/expected_export_coverage.coverage_of_if_else.json b/src/test/run-make-fulldeps/instrument-coverage-cov-reports-base/expected_export_coverage.coverage_of_if_else.json
index b9041ebebef57..051250d90a24a 100644
--- a/src/test/run-make-fulldeps/instrument-coverage-cov-reports-base/expected_export_coverage.coverage_of_if_else.json
+++ b/src/test/run-make-fulldeps/instrument-coverage-cov-reports-base/expected_export_coverage.coverage_of_if_else.json
@@ -16,15 +16,15 @@
               "percent": 100
             },
             "lines": {
-              "count": 46,
+              "count": 40,
               "covered": 19,
-              "percent": 41.30434782608695
+              "percent": 47.5
             },
             "regions": {
-              "count": 75,
+              "count": 71,
               "covered": 23,
-              "notcovered": 52,
-              "percent": 30.666666666666664
+              "notcovered": 48,
+              "percent": 32.3943661971831
             }
           }
         }
@@ -41,15 +41,15 @@
           "percent": 100
         },
         "lines": {
-          "count": 46,
+          "count": 40,
           "covered": 19,
-          "percent": 41.30434782608695
+          "percent": 47.5
         },
         "regions": {
-          "count": 75,
+          "count": 71,
           "covered": 23,
-          "notcovered": 52,
-          "percent": 30.666666666666664
+          "notcovered": 48,
+          "percent": 32.3943661971831
         }
       }
     }
diff --git a/src/test/run-make-fulldeps/instrument-coverage-cov-reports-base/typical_show_coverage.coverage_of_if_else.txt b/src/test/run-make-fulldeps/instrument-coverage-cov-reports-base/typical_show_coverage.coverage_of_if_else.txt
index 0c71155960335..87ce3b4048f2a 100644
--- a/src/test/run-make-fulldeps/instrument-coverage-cov-reports-base/typical_show_coverage.coverage_of_if_else.txt
+++ b/src/test/run-make-fulldeps/instrument-coverage-cov-reports-base/typical_show_coverage.coverage_of_if_else.txt
@@ -20,13 +20,13 @@
    16|      0|    } else {
    17|      0|        return;
    18|      0|    }
-   19|      0|
-   20|      0|    let mut countdown = 0;
+   19|       |
+   20|       |    let mut countdown = 0;
    21|      2|    if true {
                      ^1
    22|      2|        countdown = 10;
    23|      2|    }
-   24|      0|
+   24|       |
    25|      2|    if countdown > 7 {
                      ^1
    26|      2|        countdown -= 4;
@@ -40,13 +40,13 @@
    32|      0|    } else {
    33|      0|        return;
    34|      0|    }
-   35|      0|
-   36|      0|    let mut countdown = 0;
+   35|       |
+   36|       |    let mut countdown = 0;
    37|      2|    if true {
                      ^1
    38|      2|        countdown = 10;
    39|      2|    }
-   40|      0|
+   40|       |
    41|      2|    if countdown > 7 {
                      ^1
    42|      2|        countdown -= 4;
diff --git a/src/test/run-make-fulldeps/instrument-coverage-cov-reports-link-dead-code/expected_export_coverage.coverage_of_if_else.json b/src/test/run-make-fulldeps/instrument-coverage-cov-reports-link-dead-code/expected_export_coverage.coverage_of_if_else.json
index b9041ebebef57..051250d90a24a 100644
--- a/src/test/run-make-fulldeps/instrument-coverage-cov-reports-link-dead-code/expected_export_coverage.coverage_of_if_else.json
+++ b/src/test/run-make-fulldeps/instrument-coverage-cov-reports-link-dead-code/expected_export_coverage.coverage_of_if_else.json
@@ -16,15 +16,15 @@
               "percent": 100
             },
             "lines": {
-              "count": 46,
+              "count": 40,
               "covered": 19,
-              "percent": 41.30434782608695
+              "percent": 47.5
             },
             "regions": {
-              "count": 75,
+              "count": 71,
               "covered": 23,
-              "notcovered": 52,
-              "percent": 30.666666666666664
+              "notcovered": 48,
+              "percent": 32.3943661971831
             }
           }
         }
@@ -41,15 +41,15 @@
           "percent": 100
         },
         "lines": {
-          "count": 46,
+          "count": 40,
           "covered": 19,
-          "percent": 41.30434782608695
+          "percent": 47.5
         },
         "regions": {
-          "count": 75,
+          "count": 71,
           "covered": 23,
-          "notcovered": 52,
-          "percent": 30.666666666666664
+          "notcovered": 48,
+          "percent": 32.3943661971831
         }
       }
     }
diff --git a/src/test/run-make-fulldeps/instrument-coverage-cov-reports-link-dead-code/typical_show_coverage.coverage_of_if_else.txt b/src/test/run-make-fulldeps/instrument-coverage-cov-reports-link-dead-code/typical_show_coverage.coverage_of_if_else.txt
index 0c71155960335..87ce3b4048f2a 100644
--- a/src/test/run-make-fulldeps/instrument-coverage-cov-reports-link-dead-code/typical_show_coverage.coverage_of_if_else.txt
+++ b/src/test/run-make-fulldeps/instrument-coverage-cov-reports-link-dead-code/typical_show_coverage.coverage_of_if_else.txt
@@ -20,13 +20,13 @@
    16|      0|    } else {
    17|      0|        return;
    18|      0|    }
-   19|      0|
-   20|      0|    let mut countdown = 0;
+   19|       |
+   20|       |    let mut countdown = 0;
    21|      2|    if true {
                      ^1
    22|      2|        countdown = 10;
    23|      2|    }
-   24|      0|
+   24|       |
    25|      2|    if countdown > 7 {
                      ^1
    26|      2|        countdown -= 4;
@@ -40,13 +40,13 @@
    32|      0|    } else {
    33|      0|        return;
    34|      0|    }
-   35|      0|
-   36|      0|    let mut countdown = 0;
+   35|       |
+   36|       |    let mut countdown = 0;
    37|      2|    if true {
                      ^1
    38|      2|        countdown = 10;
    39|      2|    }
-   40|      0|
+   40|       |
    41|      2|    if countdown > 7 {
                      ^1
    42|      2|        countdown -= 4;
diff --git a/src/test/run-make-fulldeps/instrument-coverage-mir-cov-html-base/expected_mir_dump.coverage_of_if_else/coverage_of_if_else.main.-------.InstrumentCoverage.0.html b/src/test/run-make-fulldeps/instrument-coverage-mir-cov-html-base/expected_mir_dump.coverage_of_if_else/coverage_of_if_else.main.-------.InstrumentCoverage.0.html
index 94abe11896cba..fcb6afb263684 100644
--- a/src/test/run-make-fulldeps/instrument-coverage-mir-cov-html-base/expected_mir_dump.coverage_of_if_else/coverage_of_if_else.main.-------.InstrumentCoverage.0.html
+++ b/src/test/run-make-fulldeps/instrument-coverage-mir-cov-html-base/expected_mir_dump.coverage_of_if_else/coverage_of_if_else.main.-------.InstrumentCoverage.0.html
@@ -61,13 +61,13 @@
 <body>
 <div class="code" style="counter-reset: line 2"><span class="line"><span class="code" style="--layer: 0">fn main() {</span></span>
 <span class="line"><span class="code" style="--layer: 0">    let mut countdown = 0;</span></span>
-<span class="line"><span class="code" style="--layer: 0">    </span><span><span class="code even" style="--layer: 1" title="bb2: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
-    5:5-7:6: FalseEdge: falseEdge -&gt; [real: bb4, imaginary: bb3]"><span class="annotation">2⦊</span></span></span><span class="code even" style="--layer: 2" title="bb4: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
+<span class="line"><span class="code" style="--layer: 0">    </span><span><span class="code even" style="--layer: 1" title="bb1: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
+    5:5-7:6: FalseEdge: falseEdge -&gt; [real: bb3, imaginary: bb2]"><span class="annotation">1⦊</span></span></span><span class="code even" style="--layer: 2" title="bb3: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
     6:9-6:23: Assign: _1 = const 10_i32
     5:13-7:6: Assign: _2 = const ()
-    5:5-7:6: Goto: goto -&gt; bb5"><span class="annotation">4⦊</span></span><span class="code even" style="--layer: 3" title="bb3: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
+    5:5-7:6: Goto: goto -&gt; bb4"><span class="annotation">3⦊</span></span><span class="code even" style="--layer: 3" title="bb2: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
     5:5-7:6: Assign: _2 = const ()
-    5:5-7:6: Goto: goto -&gt; bb5"><span class="annotation">3⦊</span>if </span><span class="code even" style="--layer: 4" title="bb0: ../instrument-coverage/coverage_of_if_else.rs:5:8: 5:12:
+    5:5-7:6: Goto: goto -&gt; bb4"><span class="annotation">2⦊</span>if </span><span class="code even" style="--layer: 4" title="bb0: ../instrument-coverage/coverage_of_if_else.rs:5:8: 5:12:
     4:9-4:22: StorageLive: StorageLive(_1)
     4:25-4:26: Assign: _1 = const 0_i32
     4:9-4:22: FakeRead: FakeRead(ForLet, _1)
@@ -75,29 +75,29 @@
     5:8-5:12: StorageLive: StorageLive(_3)
     5:8-5:12: Assign: _3 = const true
     5:8-5:12: FakeRead: FakeRead(ForMatchedPlace, _3)
-    5:5-7:6: SwitchInt: switchInt(_3) -&gt; [false: bb3, otherwise: bb2]"><span class="annotation">0⦊</span>true<span class="annotation">⦉0</span></span><span class="code even" style="--layer: 3" title="bb3: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
+    5:5-7:6: SwitchInt: switchInt(_3) -&gt; [false: bb2, otherwise: bb1]"><span class="annotation">0⦊</span>true<span class="annotation">⦉0</span></span><span class="code even" style="--layer: 3" title="bb2: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
     5:5-7:6: Assign: _2 = const ()
-    5:5-7:6: Goto: goto -&gt; bb5"> {</span></span>
-<span class="line"><span class="code even" style="--layer: 3" title="bb3: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
+    5:5-7:6: Goto: goto -&gt; bb4"> {</span></span>
+<span class="line"><span class="code even" style="--layer: 3" title="bb2: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
     5:5-7:6: Assign: _2 = const ()
-    5:5-7:6: Goto: goto -&gt; bb5">        countdown = 10;</span></span>
-<span class="line"><span class="code even" style="--layer: 3" title="bb3: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
+    5:5-7:6: Goto: goto -&gt; bb4">        countdown = 10;</span></span>
+<span class="line"><span class="code even" style="--layer: 3" title="bb2: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
     5:5-7:6: Assign: _2 = const ()
-    5:5-7:6: Goto: goto -&gt; bb5">    }<span class="annotation">⦉3</span></span><span class="code even" style="--layer: 2" title="bb4: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
+    5:5-7:6: Goto: goto -&gt; bb4">    }<span class="annotation">⦉2</span></span><span class="code even" style="--layer: 2" title="bb3: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
     6:9-6:23: Assign: _1 = const 10_i32
     5:13-7:6: Assign: _2 = const ()
-    5:5-7:6: Goto: goto -&gt; bb5"><span class="annotation">⦉4</span></span><span><span class="code even" style="--layer: 1" title="bb2: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
-    5:5-7:6: FalseEdge: falseEdge -&gt; [real: bb4, imaginary: bb3]"><span class="annotation">⦉2</span></span></span><span class="code" style="--layer: 0"></span></span>
+    5:5-7:6: Goto: goto -&gt; bb4"><span class="annotation">⦉3</span></span><span><span class="code even" style="--layer: 1" title="bb1: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
+    5:5-7:6: FalseEdge: falseEdge -&gt; [real: bb3, imaginary: bb2]"><span class="annotation">⦉1</span></span></span><span class="code" style="--layer: 0"></span></span>
 <span class="line"><span class="code" style="--layer: 0"></span></span>
-<span class="line"><span class="code" style="--layer: 0">    </span><span><span class="code odd" style="--layer: 1" title="bb6: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
-    9:5-18:6: FalseEdge: falseEdge -&gt; [real: bb8, imaginary: bb7]"><span class="annotation">6⦊</span></span></span><span class="code even" style="--layer: 2" title="bb9: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
+<span class="line"><span class="code" style="--layer: 0">    </span><span><span class="code odd" style="--layer: 1" title="bb5: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
+    9:5-18:6: FalseEdge: falseEdge -&gt; [real: bb7, imaginary: bb6]"><span class="annotation">5⦊</span></span></span><span class="code even" style="--layer: 2" title="bb8: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
     10:9-10:23: Assign: _1 = move (_7.0: i32)
     9:22-11:6: Assign: _4 = const ()
-    9:5-18:6: Goto: goto -&gt; bb28"><span class="annotation">9⦊</span></span><span class="code even" style="--layer: 3" title="bb25: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
+    9:5-18:6: Goto: goto -&gt; bb25"><span class="annotation">8⦊</span></span><span class="code even" style="--layer: 3" title="bb24: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
     15:9-15:23: Assign: _1 = move (_19.0: i32)
     11:29-16:6: Assign: _4 = const ()
     18:5-18:6: StorageDead: StorageDead(_8)
-    9:5-18:6: Goto: goto -&gt; bb28"><span class="annotation">25⦊</span>if </span><span class="code even" style="--layer: 4" title="bb5: ../instrument-coverage/coverage_of_if_else.rs:9:8: 9:21:
+    9:5-18:6: Goto: goto -&gt; bb25"><span class="annotation">24⦊</span>if </span><span class="code even" style="--layer: 4" title="bb4: ../instrument-coverage/coverage_of_if_else.rs:9:8: 9:21:
     7:5-7:6: StorageDead: StorageDead(_3)
     7:5-7:6: StorageDead: StorageDead(_2)
     9:5-18:6: StorageLive: StorageLive(_4)
@@ -107,61 +107,50 @@
     9:8-9:21: Assign: _5 = Gt(move _6, const 7_i32)
     9:20-9:21: StorageDead: StorageDead(_6)
     9:8-9:21: FakeRead: FakeRead(ForMatchedPlace, _5)
-    9:5-18:6: SwitchInt: switchInt(_5) -&gt; [false: bb7, otherwise: bb6]"><span class="annotation">5⦊</span>countdown &gt; 7<span class="annotation">⦉5</span></span><span class="code even" style="--layer: 3" title="bb25: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
+    9:5-18:6: SwitchInt: switchInt(_5) -&gt; [false: bb6, otherwise: bb5]"><span class="annotation">4⦊</span>countdown &gt; 7<span class="annotation">⦉4</span></span><span class="code even" style="--layer: 3" title="bb24: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
     15:9-15:23: Assign: _1 = move (_19.0: i32)
     11:29-16:6: Assign: _4 = const ()
     18:5-18:6: StorageDead: StorageDead(_8)
-    9:5-18:6: Goto: goto -&gt; bb28"> {</span></span>
-<span class="line"><span class="code even" style="--layer: 3" title="bb25: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
+    9:5-18:6: Goto: goto -&gt; bb25"> {</span></span>
+<span class="line"><span class="code even" style="--layer: 3" title="bb24: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
     15:9-15:23: Assign: _1 = move (_19.0: i32)
     11:29-16:6: Assign: _4 = const ()
     18:5-18:6: StorageDead: StorageDead(_8)
-    9:5-18:6: Goto: goto -&gt; bb28">        </span><span class="code odd" style="--layer: 4" title="bb8: ../instrument-coverage/coverage_of_if_else.rs:10:9: 10:23:
+    9:5-18:6: Goto: goto -&gt; bb25">        </span><span class="code odd" style="--layer: 4" title="bb7: ../instrument-coverage/coverage_of_if_else.rs:10:9: 10:23:
     10:9-10:23: Assign: _7 = CheckedSub(_1, const 4_i32)
-    10:9-10:23: Assert: assert(!move (_7.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _1, const 4_i32) -&gt; [success: bb9, unwind: bb1]"><span class="annotation">8⦊</span>countdown -= 4<span class="annotation">⦉8</span></span><span class="code even" style="--layer: 3" title="bb25: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
+    10:9-10:23: Assert: assert(!move (_7.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _1, const 4_i32) -&gt; [success: bb8, unwind: bb78]"><span class="annotation">7⦊</span>countdown -= 4<span class="annotation">⦉7</span></span><span class="code even" style="--layer: 3" title="bb24: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
     15:9-15:23: Assign: _1 = move (_19.0: i32)
     11:29-16:6: Assign: _4 = const ()
     18:5-18:6: StorageDead: StorageDead(_8)
-    9:5-18:6: Goto: goto -&gt; bb28">;</span></span>
-<span class="line"><span class="code even" style="--layer: 3" title="bb25: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
+    9:5-18:6: Goto: goto -&gt; bb25">;</span></span>
+<span class="line"><span class="code even" style="--layer: 3" title="bb24: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
     15:9-15:23: Assign: _1 = move (_19.0: i32)
     11:29-16:6: Assign: _4 = const ()
     18:5-18:6: StorageDead: StorageDead(_8)
-    9:5-18:6: Goto: goto -&gt; bb28">    } else </span><span class="code even" style="--layer: 4" title="bb10: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
-    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb12, imaginary: bb11]"><span class="annotation">10⦊</span>if </span><span class="code even" style="--layer: 5" title="bb7: ../instrument-coverage/coverage_of_if_else.rs:11:15: 11:28:
+    9:5-18:6: Goto: goto -&gt; bb25">    } else </span><span class="code even" style="--layer: 4" title="bb9: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
+    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb11, imaginary: bb10]"><span class="annotation">9⦊</span>if </span><span class="code even" style="--layer: 5" title="bb6: ../instrument-coverage/coverage_of_if_else.rs:11:15: 11:28:
     11:15-11:28: StorageLive: StorageLive(_8)
     11:15-11:24: StorageLive: StorageLive(_9)
     11:15-11:24: Assign: _9 = _1
     11:15-11:28: Assign: _8 = Gt(move _9, const 2_i32)
     11:27-11:28: StorageDead: StorageDead(_9)
     11:15-11:28: FakeRead: FakeRead(ForMatchedPlace, _8)
-    11:12-18:6: SwitchInt: switchInt(_8) -&gt; [false: bb11, otherwise: bb10]"><span class="annotation">7⦊</span>countdown &gt; 2<span class="annotation">⦉7</span></span><span class="code even" style="--layer: 4" title="bb10: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
-    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb12, imaginary: bb11]"> {</span></span>
-<span class="line"><span class="code even" style="--layer: 4" title="bb10: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
-    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb12, imaginary: bb11]">        </span><span class="code odd" style="--layer: 5" title="bb22: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
-    12:9-14:10: Assign: _10 = const ()
-    12:9-14:10: Goto: goto -&gt; bb24"><span class="annotation">22⦊</span></span><span class="code even" style="--layer: 6" title="bb23: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
+    11:12-18:6: SwitchInt: switchInt(_8) -&gt; [false: bb10, otherwise: bb9]"><span class="annotation">6⦊</span>countdown &gt; 2<span class="annotation">⦉6</span></span><span class="code even" style="--layer: 4" title="bb9: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
+    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb11, imaginary: bb10]"> {</span></span>
+<span class="line"><span class="code even" style="--layer: 4" title="bb9: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
+    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb11, imaginary: bb10]">        </span><span class="code odd" style="--layer: 5" title="bb20: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
+    12:9-14:10: FalseEdge: falseEdge -&gt; [real: bb22, imaginary: bb21]"><span class="annotation">20⦊</span></span><span class="code even" style="--layer: 6" title="bb22: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
     13:13-13:26: Assign: _1 = const 0_i32
     12:61-14:10: Assign: _10 = const ()
-    12:9-14:10: Goto: goto -&gt; bb24"><span class="annotation">23⦊</span></span><span class="code even" style="--layer: 7" title="bb21: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
-    12:9-14:10: FalseEdge: falseEdge -&gt; [real: bb23, imaginary: bb22]"><span class="annotation">21⦊</span>if </span><span class="code even" style="--layer: 8" title="bb14: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
-    12:12-12:60: Assign: _11 = const false
-    12:12-12:60: Goto: goto -&gt; bb16"><span class="annotation">14⦊</span></span><span class="code even" style="--layer: 9" title="bb15: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
+    12:9-14:10: Goto: goto -&gt; bb23"><span class="annotation">22⦊</span></span><span class="code even" style="--layer: 7" title="bb21: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
+    12:9-14:10: Assign: _10 = const ()
+    12:9-14:10: Goto: goto -&gt; bb23"><span class="annotation">21⦊</span>if </span><span class="code even" style="--layer: 8" title="bb14: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
     12:46-12:60: StorageLive: StorageLive(_17)
     12:46-12:55: StorageLive: StorageLive(_18)
     12:46-12:55: Assign: _18 = _1
     12:46-12:60: Assign: _17 = Ne(move _18, const 9_i32)
     12:59-12:60: StorageDead: StorageDead(_18)
-    12:12-12:60: SwitchInt: switchInt(move _17) -&gt; [false: bb14, otherwise: bb13]"><span class="annotation">15⦊</span></span><span class="code even" style="--layer: 10" title="bb16: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
-    12:59-12:60: StorageDead: StorageDead(_17)
-    12:59-12:60: StorageDead: StorageDead(_12)
-    12:12-12:60: FakeRead: FakeRead(ForMatchedPlace, _11)
-    12:9-14:10: SwitchInt: switchInt(_11) -&gt; [false: bb22, otherwise: bb21]"><span class="annotation">16⦊</span></span><span class="code even" style="--layer: 11" title="bb13: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
-    12:12-12:60: Assign: _11 = const true
-    12:12-12:60: Goto: goto -&gt; bb16"><span class="annotation">13⦊</span></span><span class="code even" style="--layer: 12" title="bb20: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
-    12:41-12:42: StorageDead: StorageDead(_15)
-    12:41-12:42: StorageDead: StorageDead(_13)
-    12:12-12:60: SwitchInt: switchInt(move _12) -&gt; [false: bb15, otherwise: bb13]"><span class="annotation">20⦊</span></span><span class="code even" style="--layer: 13" title="bb12: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
+    12:12-12:60: SwitchInt: switchInt(move _17) -&gt; [false: bb13, otherwise: bb12]"><span class="annotation">14⦊</span></span><span class="code even" style="--layer: 9" title="bb11: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
     12:9-14:10: StorageLive: StorageLive(_10)
     12:12-12:60: StorageLive: StorageLive(_11)
     12:12-12:42: StorageLive: StorageLive(_12)
@@ -170,25 +159,43 @@
     12:12-12:21: Assign: _14 = _1
     12:12-12:25: Assign: _13 = Lt(move _14, const 1_i32)
     12:24-12:25: StorageDead: StorageDead(_14)
-    12:12-12:42: SwitchInt: switchInt(move _13) -&gt; [false: bb19, otherwise: bb17]"><span class="annotation">12⦊</span></span><span class="code even" style="--layer: 14" title="bb18: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:42:
-    12:12-12:42: Assign: _12 = const false
-    12:12-12:42: Goto: goto -&gt; bb20"><span class="annotation">18⦊</span></span><span class="code even" style="--layer: 15" title="bb19: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:42:
-    12:29-12:42: StorageLive: StorageLive(_15)
-    12:29-12:38: StorageLive: StorageLive(_16)
-    12:29-12:38: Assign: _16 = _1
-    12:29-12:42: Assign: _15 = Gt(move _16, const 5_i32)
-    12:41-12:42: StorageDead: StorageDead(_16)
-    12:12-12:42: SwitchInt: switchInt(move _15) -&gt; [false: bb18, otherwise: bb17]"><span class="annotation">19⦊</span></span><span class="code even" style="--layer: 16" title="bb17: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:42:
+    12:12-12:42: SwitchInt: switchInt(move _13) -&gt; [false: bb18, otherwise: bb16]"><span class="annotation">11⦊</span></span><span class="code even" style="--layer: 10" title="bb13: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
+    12:12-12:60: Assign: _11 = const false
+    12:12-12:60: Goto: goto -&gt; bb15"><span class="annotation">13⦊</span></span><span class="code even" style="--layer: 11" title="bb19: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
+    12:41-12:42: StorageDead: StorageDead(_15)
+    12:41-12:42: StorageDead: StorageDead(_13)
+    12:12-12:60: SwitchInt: switchInt(move _12) -&gt; [false: bb14, otherwise: bb12]"><span class="annotation">19⦊</span></span><span class="code even" style="--layer: 12" title="bb15: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
+    12:59-12:60: StorageDead: StorageDead(_17)
+    12:59-12:60: StorageDead: StorageDead(_12)
+    12:12-12:60: FakeRead: FakeRead(ForMatchedPlace, _11)
+    12:9-14:10: SwitchInt: switchInt(_11) -&gt; [false: bb21, otherwise: bb20]"><span class="annotation">15⦊</span></span><span class="code even" style="--layer: 13" title="bb12: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
+    12:12-12:60: Assign: _11 = const true
+    12:12-12:60: Goto: goto -&gt; bb15"><span class="annotation">12⦊</span></span><span class="code even" style="--layer: 14" title="bb16: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:42:
     12:12-12:42: Assign: _12 = const true
-    12:12-12:42: Goto: goto -&gt; bb20"><span class="annotation">17⦊</span>countdown &lt; 1 || countdown &gt; 5<span class="annotation">⦉17</span></span><span class="code even" style="--layer: 15" title="bb19: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:42:
+    12:12-12:42: Goto: goto -&gt; bb19"><span class="annotation">16⦊</span></span><span class="code even" style="--layer: 15" title="bb17: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:42:
+    12:12-12:42: Assign: _12 = const false
+    12:12-12:42: Goto: goto -&gt; bb19"><span class="annotation">17⦊</span></span><span class="code even" style="--layer: 16" title="bb18: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:42:
     12:29-12:42: StorageLive: StorageLive(_15)
     12:29-12:38: StorageLive: StorageLive(_16)
     12:29-12:38: Assign: _16 = _1
     12:29-12:42: Assign: _15 = Gt(move _16, const 5_i32)
     12:41-12:42: StorageDead: StorageDead(_16)
-    12:12-12:42: SwitchInt: switchInt(move _15) -&gt; [false: bb18, otherwise: bb17]"><span class="annotation">⦉19</span></span><span class="code even" style="--layer: 14" title="bb18: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:42:
+    12:12-12:42: SwitchInt: switchInt(move _15) -&gt; [false: bb17, otherwise: bb16]"><span class="annotation">18⦊</span>countdown &lt; 1 || countdown &gt; 5<span class="annotation">⦉18</span></span><span class="code even" style="--layer: 15" title="bb17: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:42:
     12:12-12:42: Assign: _12 = const false
-    12:12-12:42: Goto: goto -&gt; bb20"><span class="annotation">⦉18</span></span><span class="code even" style="--layer: 13" title="bb12: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
+    12:12-12:42: Goto: goto -&gt; bb19"><span class="annotation">⦉17</span></span><span class="code even" style="--layer: 14" title="bb16: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:42:
+    12:12-12:42: Assign: _12 = const true
+    12:12-12:42: Goto: goto -&gt; bb19"><span class="annotation">⦉16</span></span><span class="code even" style="--layer: 13" title="bb12: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
+    12:12-12:60: Assign: _11 = const true
+    12:12-12:60: Goto: goto -&gt; bb15"> || countdown != 9<span class="annotation">⦉12</span></span><span class="code even" style="--layer: 12" title="bb15: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
+    12:59-12:60: StorageDead: StorageDead(_17)
+    12:59-12:60: StorageDead: StorageDead(_12)
+    12:12-12:60: FakeRead: FakeRead(ForMatchedPlace, _11)
+    12:9-14:10: SwitchInt: switchInt(_11) -&gt; [false: bb21, otherwise: bb20]"><span class="annotation">⦉15</span></span><span class="code even" style="--layer: 11" title="bb19: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
+    12:41-12:42: StorageDead: StorageDead(_15)
+    12:41-12:42: StorageDead: StorageDead(_13)
+    12:12-12:60: SwitchInt: switchInt(move _12) -&gt; [false: bb14, otherwise: bb12]"><span class="annotation">⦉19</span></span><span class="code even" style="--layer: 10" title="bb13: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
+    12:12-12:60: Assign: _11 = const false
+    12:12-12:60: Goto: goto -&gt; bb15"><span class="annotation">⦉13</span></span><span class="code even" style="--layer: 9" title="bb11: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
     12:9-14:10: StorageLive: StorageLive(_10)
     12:12-12:60: StorageLive: StorageLive(_11)
     12:12-12:42: StorageLive: StorageLive(_12)
@@ -197,108 +204,66 @@
     12:12-12:21: Assign: _14 = _1
     12:12-12:25: Assign: _13 = Lt(move _14, const 1_i32)
     12:24-12:25: StorageDead: StorageDead(_14)
-    12:12-12:42: SwitchInt: switchInt(move _13) -&gt; [false: bb19, otherwise: bb17]"> || countdown != 9<span class="annotation">⦉12</span></span><span class="code even" style="--layer: 12" title="bb20: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
-    12:41-12:42: StorageDead: StorageDead(_15)
-    12:41-12:42: StorageDead: StorageDead(_13)
-    12:12-12:60: SwitchInt: switchInt(move _12) -&gt; [false: bb15, otherwise: bb13]"><span class="annotation">⦉20</span></span><span class="code even" style="--layer: 11" title="bb13: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
-    12:12-12:60: Assign: _11 = const true
-    12:12-12:60: Goto: goto -&gt; bb16"><span class="annotation">⦉13</span></span><span class="code even" style="--layer: 10" title="bb16: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
-    12:59-12:60: StorageDead: StorageDead(_17)
-    12:59-12:60: StorageDead: StorageDead(_12)
-    12:12-12:60: FakeRead: FakeRead(ForMatchedPlace, _11)
-    12:9-14:10: SwitchInt: switchInt(_11) -&gt; [false: bb22, otherwise: bb21]"><span class="annotation">⦉16</span></span><span class="code even" style="--layer: 9" title="bb15: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
+    12:12-12:42: SwitchInt: switchInt(move _13) -&gt; [false: bb18, otherwise: bb16]"><span class="annotation">⦉11</span></span><span class="code even" style="--layer: 8" title="bb14: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
     12:46-12:60: StorageLive: StorageLive(_17)
     12:46-12:55: StorageLive: StorageLive(_18)
     12:46-12:55: Assign: _18 = _1
     12:46-12:60: Assign: _17 = Ne(move _18, const 9_i32)
     12:59-12:60: StorageDead: StorageDead(_18)
-    12:12-12:60: SwitchInt: switchInt(move _17) -&gt; [false: bb14, otherwise: bb13]"><span class="annotation">⦉15</span></span><span class="code even" style="--layer: 8" title="bb14: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
-    12:12-12:60: Assign: _11 = const false
-    12:12-12:60: Goto: goto -&gt; bb16"><span class="annotation">⦉14</span></span><span class="code even" style="--layer: 7" title="bb21: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
-    12:9-14:10: FalseEdge: falseEdge -&gt; [real: bb23, imaginary: bb22]"> {</span></span>
+    12:12-12:60: SwitchInt: switchInt(move _17) -&gt; [false: bb13, otherwise: bb12]"><span class="annotation">⦉14</span></span><span class="code even" style="--layer: 7" title="bb21: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
+    12:9-14:10: Assign: _10 = const ()
+    12:9-14:10: Goto: goto -&gt; bb23"> {</span></span>
 <span class="line"><span class="code even" style="--layer: 7" title="bb21: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
-    12:9-14:10: FalseEdge: falseEdge -&gt; [real: bb23, imaginary: bb22]">            countdown = 0;</span></span>
+    12:9-14:10: Assign: _10 = const ()
+    12:9-14:10: Goto: goto -&gt; bb23">            countdown = 0;</span></span>
 <span class="line"><span class="code even" style="--layer: 7" title="bb21: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
-    12:9-14:10: FalseEdge: falseEdge -&gt; [real: bb23, imaginary: bb22]">        </span><span class="code odd" style="--layer: 8" title="bb24: ../instrument-coverage/coverage_of_if_else.rs:14:9: 15:23:
+    12:9-14:10: Assign: _10 = const ()
+    12:9-14:10: Goto: goto -&gt; bb23">        </span><span class="code odd" style="--layer: 8" title="bb23: ../instrument-coverage/coverage_of_if_else.rs:14:9: 15:23:
     14:9-14:10: StorageDead: StorageDead(_11)
     14:9-14:10: StorageDead: StorageDead(_10)
     15:9-15:23: Assign: _19 = CheckedSub(_1, const 5_i32)
-    15:9-15:23: Assert: assert(!move (_19.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _1, const 5_i32) -&gt; [success: bb25, unwind: bb1]"><span class="annotation">24⦊</span>}</span><span class="code odd" style="--layer: 5" title="bb22: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
-    12:9-14:10: Assign: _10 = const ()
-    12:9-14:10: Goto: goto -&gt; bb24"><span class="annotation">⦉22</span></span><span class="code even" style="--layer: 6" title="bb23: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
+    15:9-15:23: Assert: assert(!move (_19.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _1, const 5_i32) -&gt; [success: bb24, unwind: bb78]"><span class="annotation">23⦊</span>}</span><span class="code odd" style="--layer: 5" title="bb20: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
+    12:9-14:10: FalseEdge: falseEdge -&gt; [real: bb22, imaginary: bb21]"><span class="annotation">⦉20</span></span><span class="code even" style="--layer: 6" title="bb22: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
     13:13-13:26: Assign: _1 = const 0_i32
     12:61-14:10: Assign: _10 = const ()
-    12:9-14:10: Goto: goto -&gt; bb24"><span class="annotation">⦉23</span></span><span class="code even" style="--layer: 7" title="bb21: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
-    12:9-14:10: FalseEdge: falseEdge -&gt; [real: bb23, imaginary: bb22]"><span class="annotation">⦉21</span></span><span class="code even" style="--layer: 7" title="bb21: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
-    12:9-14:10: FalseEdge: falseEdge -&gt; [real: bb23, imaginary: bb22]"><span class="annotation">⦉21</span></span><span class="code odd" style="--layer: 8" title="bb24: ../instrument-coverage/coverage_of_if_else.rs:14:9: 15:23:
+    12:9-14:10: Goto: goto -&gt; bb23"><span class="annotation">⦉22</span></span><span class="code even" style="--layer: 7" title="bb21: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
+    12:9-14:10: Assign: _10 = const ()
+    12:9-14:10: Goto: goto -&gt; bb23"><span class="annotation">⦉21</span></span><span class="code even" style="--layer: 7" title="bb21: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
+    12:9-14:10: Assign: _10 = const ()
+    12:9-14:10: Goto: goto -&gt; bb23"><span class="annotation">⦉21</span></span><span class="code odd" style="--layer: 8" title="bb23: ../instrument-coverage/coverage_of_if_else.rs:14:9: 15:23:
     14:9-14:10: StorageDead: StorageDead(_11)
     14:9-14:10: StorageDead: StorageDead(_10)
     15:9-15:23: Assign: _19 = CheckedSub(_1, const 5_i32)
-    15:9-15:23: Assert: assert(!move (_19.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _1, const 5_i32) -&gt; [success: bb25, unwind: bb1]"></span></span>
-<span class="line"><span class="code odd" style="--layer: 8" title="bb24: ../instrument-coverage/coverage_of_if_else.rs:14:9: 15:23:
+    15:9-15:23: Assert: assert(!move (_19.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _1, const 5_i32) -&gt; [success: bb24, unwind: bb78]"></span></span>
+<span class="line"><span class="code odd" style="--layer: 8" title="bb23: ../instrument-coverage/coverage_of_if_else.rs:14:9: 15:23:
     14:9-14:10: StorageDead: StorageDead(_11)
     14:9-14:10: StorageDead: StorageDead(_10)
     15:9-15:23: Assign: _19 = CheckedSub(_1, const 5_i32)
-    15:9-15:23: Assert: assert(!move (_19.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _1, const 5_i32) -&gt; [success: bb25, unwind: bb1]">        countdown -= 5<span class="annotation">⦉24</span></span><span class="code even" style="--layer: 4" title="bb10: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
-    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb12, imaginary: bb11]">;</span></span>
-<span class="line"><span class="code even" style="--layer: 4" title="bb10: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
-    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb12, imaginary: bb11]">    } else {</span></span>
-<span class="line"><span class="code even" style="--layer: 4" title="bb10: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
-    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb12, imaginary: bb11]">        </span><span class="code even" style="--layer: 5" title="bb27: ../instrument-coverage/coverage_of_if_else.rs:17:9: 51:2:
-    51:1-51:2: StorageDead: StorageDead(_1)
-    17:9-17:15: Goto: goto -&gt; bb26"><span class="annotation">27⦊</span></span><span class="code even" style="--layer: 6" title="bb11: ../instrument-coverage/coverage_of_if_else.rs:17:9: 18:6:
-    17:9-17:15: Assign: _0 = const ()
-    18:5-18:6: StorageDead: StorageDead(_8)
-    18:5-18:6: StorageDead: StorageDead(_5)
-    18:5-18:6: StorageDead: StorageDead(_4)
-    17:9-17:15: Goto: goto -&gt; bb27"><span class="annotation">11⦊</span>return;</span></span>
-<span class="line"><span class="code even" style="--layer: 6" title="bb11: ../instrument-coverage/coverage_of_if_else.rs:17:9: 18:6:
-    17:9-17:15: Assign: _0 = const ()
-    18:5-18:6: StorageDead: StorageDead(_8)
-    18:5-18:6: StorageDead: StorageDead(_5)
-    18:5-18:6: StorageDead: StorageDead(_4)
-    17:9-17:15: Goto: goto -&gt; bb27">    }<span class="annotation">⦉11</span></span><span><span class="code odd" style="--layer: 1" title="bb6: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
-    9:5-18:6: FalseEdge: falseEdge -&gt; [real: bb8, imaginary: bb7]"><span class="annotation">⦉6</span></span></span><span class="code even" style="--layer: 2" title="bb9: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
-    10:9-10:23: Assign: _1 = move (_7.0: i32)
-    9:22-11:6: Assign: _4 = const ()
-    9:5-18:6: Goto: goto -&gt; bb28"><span class="annotation">⦉9</span></span><span class="code even" style="--layer: 3" title="bb25: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
-    15:9-15:23: Assign: _1 = move (_19.0: i32)
-    11:29-16:6: Assign: _4 = const ()
-    18:5-18:6: StorageDead: StorageDead(_8)
-    9:5-18:6: Goto: goto -&gt; bb28"><span class="annotation">⦉25</span></span><span class="code even" style="--layer: 3" title="bb25: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
-    15:9-15:23: Assign: _1 = move (_19.0: i32)
-    11:29-16:6: Assign: _4 = const ()
-    18:5-18:6: StorageDead: StorageDead(_8)
-    9:5-18:6: Goto: goto -&gt; bb28"><span class="annotation">⦉25</span></span><span class="code even" style="--layer: 3" title="bb25: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
+    15:9-15:23: Assert: assert(!move (_19.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _1, const 5_i32) -&gt; [success: bb24, unwind: bb78]">        countdown -= 5<span class="annotation">⦉23</span></span><span class="code even" style="--layer: 4" title="bb9: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
+    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb11, imaginary: bb10]">;</span></span>
+<span class="line"><span class="code even" style="--layer: 4" title="bb9: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
+    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb11, imaginary: bb10]">    } else {</span></span>
+<span class="line"><span class="code even" style="--layer: 4" title="bb9: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
+    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb11, imaginary: bb10]">        return;</span></span>
+<span class="line"><span class="code even" style="--layer: 4" title="bb9: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
+    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb11, imaginary: bb10]">    }<span class="annotation">⦉9</span></span><span class="code even" style="--layer: 3" title="bb24: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
     15:9-15:23: Assign: _1 = move (_19.0: i32)
     11:29-16:6: Assign: _4 = const ()
     18:5-18:6: StorageDead: StorageDead(_8)
-    9:5-18:6: Goto: goto -&gt; bb28"><span class="annotation">⦉25</span></span><span class="code even" style="--layer: 4" title="bb10: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
-    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb12, imaginary: bb11]"><span class="annotation">⦉10</span></span><span class="code even" style="--layer: 4" title="bb10: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
-    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb12, imaginary: bb11]"><span class="annotation">⦉10</span></span><span class="code even" style="--layer: 4" title="bb10: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
-    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb12, imaginary: bb11]"><span class="annotation">⦉10</span></span><span class="code even" style="--layer: 6" title="bb11: ../instrument-coverage/coverage_of_if_else.rs:17:9: 18:6:
-    17:9-17:15: Assign: _0 = const ()
-    18:5-18:6: StorageDead: StorageDead(_8)
-    18:5-18:6: StorageDead: StorageDead(_5)
-    18:5-18:6: StorageDead: StorageDead(_4)
-    17:9-17:15: Goto: goto -&gt; bb27"><span class="annotation">⦉11</span></span><span class="code even" style="--layer: 5" title="bb27: ../instrument-coverage/coverage_of_if_else.rs:17:9: 51:2:
-    51:1-51:2: StorageDead: StorageDead(_1)
-    17:9-17:15: Goto: goto -&gt; bb26"></span></span>
-<span class="line"><span class="code even" style="--layer: 5" title="bb27: ../instrument-coverage/coverage_of_if_else.rs:17:9: 51:2:
-    51:1-51:2: StorageDead: StorageDead(_1)
-    17:9-17:15: Goto: goto -&gt; bb26"></span></span>
-<span class="line"><span class="code even" style="--layer: 5" title="bb27: ../instrument-coverage/coverage_of_if_else.rs:17:9: 51:2:
-    51:1-51:2: StorageDead: StorageDead(_1)
-    17:9-17:15: Goto: goto -&gt; bb26">    let mut countdown = 0;</span></span>
-<span class="line"><span class="code even" style="--layer: 5" title="bb27: ../instrument-coverage/coverage_of_if_else.rs:17:9: 51:2:
-    51:1-51:2: StorageDead: StorageDead(_1)
-    17:9-17:15: Goto: goto -&gt; bb26">    </span><span class="code odd" style="--layer: 6" title="bb30: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
+    9:5-18:6: Goto: goto -&gt; bb25"><span class="annotation">⦉24</span></span><span class="code even" style="--layer: 2" title="bb8: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
+    10:9-10:23: Assign: _1 = move (_7.0: i32)
+    9:22-11:6: Assign: _4 = const ()
+    9:5-18:6: Goto: goto -&gt; bb25"><span class="annotation">⦉8</span></span><span><span class="code odd" style="--layer: 1" title="bb5: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
+    9:5-18:6: FalseEdge: falseEdge -&gt; [real: bb7, imaginary: bb6]"><span class="annotation">⦉5</span></span></span><span class="code" style="--layer: 0"></span></span>
+<span class="line"><span class="code" style="--layer: 0"></span></span>
+<span class="line"><span class="code" style="--layer: 0">    let mut countdown = 0;</span></span>
+<span class="line"><span class="code" style="--layer: 0">    </span><span><span class="code even" style="--layer: 1" title="bb27: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
     21:5-23:6: Assign: _22 = const ()
-    21:5-23:6: Goto: goto -&gt; bb32"><span class="annotation">30⦊</span></span><span class="code even" style="--layer: 7" title="bb31: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
+    21:5-23:6: Goto: goto -&gt; bb29"><span class="annotation">27⦊</span></span></span><span class="code even" style="--layer: 2" title="bb28: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
     22:9-22:23: Assign: _21 = const 10_i32
     21:13-23:6: Assign: _22 = const ()
-    21:5-23:6: Goto: goto -&gt; bb32"><span class="annotation">31⦊</span></span><span class="code even" style="--layer: 8" title="bb29: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
-    21:5-23:6: FalseEdge: falseEdge -&gt; [real: bb31, imaginary: bb30]"><span class="annotation">29⦊</span>if </span><span class="code even" style="--layer: 9" title="bb28: ../instrument-coverage/coverage_of_if_else.rs:21:8: 21:12:
+    21:5-23:6: Goto: goto -&gt; bb29"><span class="annotation">28⦊</span></span><span class="code even" style="--layer: 3" title="bb26: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
+    21:5-23:6: FalseEdge: falseEdge -&gt; [real: bb28, imaginary: bb27]"><span class="annotation">26⦊</span>if </span><span class="code even" style="--layer: 4" title="bb25: ../instrument-coverage/coverage_of_if_else.rs:21:8: 21:12:
     18:5-18:6: StorageDead: StorageDead(_5)
     18:5-18:6: StorageDead: StorageDead(_4)
     20:9-20:22: StorageLive: StorageLive(_21)
@@ -308,33 +273,27 @@
     21:8-21:12: StorageLive: StorageLive(_23)
     21:8-21:12: Assign: _23 = const true
     21:8-21:12: FakeRead: FakeRead(ForMatchedPlace, _23)
-    21:5-23:6: SwitchInt: switchInt(_23) -&gt; [false: bb30, otherwise: bb29]"><span class="annotation">28⦊</span>true<span class="annotation">⦉28</span></span><span class="code even" style="--layer: 8" title="bb29: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
-    21:5-23:6: FalseEdge: falseEdge -&gt; [real: bb31, imaginary: bb30]"> {</span></span>
-<span class="line"><span class="code even" style="--layer: 8" title="bb29: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
-    21:5-23:6: FalseEdge: falseEdge -&gt; [real: bb31, imaginary: bb30]">        countdown = 10;</span></span>
-<span class="line"><span class="code even" style="--layer: 8" title="bb29: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
-    21:5-23:6: FalseEdge: falseEdge -&gt; [real: bb31, imaginary: bb30]">    }<span class="annotation">⦉29</span></span><span class="code even" style="--layer: 7" title="bb31: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
+    21:5-23:6: SwitchInt: switchInt(_23) -&gt; [false: bb27, otherwise: bb26]"><span class="annotation">25⦊</span>true<span class="annotation">⦉25</span></span><span class="code even" style="--layer: 3" title="bb26: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
+    21:5-23:6: FalseEdge: falseEdge -&gt; [real: bb28, imaginary: bb27]"> {</span></span>
+<span class="line"><span class="code even" style="--layer: 3" title="bb26: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
+    21:5-23:6: FalseEdge: falseEdge -&gt; [real: bb28, imaginary: bb27]">        countdown = 10;</span></span>
+<span class="line"><span class="code even" style="--layer: 3" title="bb26: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
+    21:5-23:6: FalseEdge: falseEdge -&gt; [real: bb28, imaginary: bb27]">    }<span class="annotation">⦉26</span></span><span class="code even" style="--layer: 2" title="bb28: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
     22:9-22:23: Assign: _21 = const 10_i32
     21:13-23:6: Assign: _22 = const ()
-    21:5-23:6: Goto: goto -&gt; bb32"><span class="annotation">⦉31</span></span><span class="code odd" style="--layer: 6" title="bb30: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
+    21:5-23:6: Goto: goto -&gt; bb29"><span class="annotation">⦉28</span></span><span><span class="code even" style="--layer: 1" title="bb27: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
     21:5-23:6: Assign: _22 = const ()
-    21:5-23:6: Goto: goto -&gt; bb32"><span class="annotation">⦉30</span></span><span class="code even" style="--layer: 5" title="bb27: ../instrument-coverage/coverage_of_if_else.rs:17:9: 51:2:
-    51:1-51:2: StorageDead: StorageDead(_1)
-    17:9-17:15: Goto: goto -&gt; bb26"></span></span>
-<span class="line"><span class="code even" style="--layer: 5" title="bb27: ../instrument-coverage/coverage_of_if_else.rs:17:9: 51:2:
-    51:1-51:2: StorageDead: StorageDead(_1)
-    17:9-17:15: Goto: goto -&gt; bb26"></span></span>
-<span class="line"><span class="code even" style="--layer: 5" title="bb27: ../instrument-coverage/coverage_of_if_else.rs:17:9: 51:2:
-    51:1-51:2: StorageDead: StorageDead(_1)
-    17:9-17:15: Goto: goto -&gt; bb26">    </span><span class="code even" style="--layer: 6" title="bb33: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
-    25:5-34:6: FalseEdge: falseEdge -&gt; [real: bb35, imaginary: bb34]"><span class="annotation">33⦊</span></span><span class="code even" style="--layer: 7" title="bb52: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
+    21:5-23:6: Goto: goto -&gt; bb29"><span class="annotation">⦉27</span></span></span><span class="code" style="--layer: 0"></span></span>
+<span class="line"><span class="code" style="--layer: 0"></span></span>
+<span class="line"><span class="code" style="--layer: 0">    </span><span><span class="code odd" style="--layer: 1" title="bb49: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
     31:9-31:23: Assign: _21 = move (_39.0: i32)
     27:29-32:6: Assign: _24 = const ()
     34:5-34:6: StorageDead: StorageDead(_28)
-    25:5-34:6: Goto: goto -&gt; bb53"><span class="annotation">52⦊</span></span><span class="code even" style="--layer: 8" title="bb36: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
+    25:5-34:6: Goto: goto -&gt; bb50"><span class="annotation">49⦊</span></span></span><span class="code even" style="--layer: 2" title="bb33: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
     26:9-26:23: Assign: _21 = move (_27.0: i32)
     25:22-27:6: Assign: _24 = const ()
-    25:5-34:6: Goto: goto -&gt; bb53"><span class="annotation">36⦊</span>if </span><span class="code even" style="--layer: 9" title="bb32: ../instrument-coverage/coverage_of_if_else.rs:25:8: 25:21:
+    25:5-34:6: Goto: goto -&gt; bb50"><span class="annotation">33⦊</span></span><span class="code even" style="--layer: 3" title="bb30: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
+    25:5-34:6: FalseEdge: falseEdge -&gt; [real: bb32, imaginary: bb31]"><span class="annotation">30⦊</span>if </span><span class="code even" style="--layer: 4" title="bb29: ../instrument-coverage/coverage_of_if_else.rs:25:8: 25:21:
     23:5-23:6: StorageDead: StorageDead(_23)
     23:5-23:6: StorageDead: StorageDead(_22)
     25:5-34:6: StorageLive: StorageLive(_24)
@@ -344,40 +303,47 @@
     25:8-25:21: Assign: _25 = Gt(move _26, const 7_i32)
     25:20-25:21: StorageDead: StorageDead(_26)
     25:8-25:21: FakeRead: FakeRead(ForMatchedPlace, _25)
-    25:5-34:6: SwitchInt: switchInt(_25) -&gt; [false: bb34, otherwise: bb33]"><span class="annotation">32⦊</span>countdown &gt; 7<span class="annotation">⦉32</span></span><span class="code even" style="--layer: 8" title="bb36: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
-    26:9-26:23: Assign: _21 = move (_27.0: i32)
-    25:22-27:6: Assign: _24 = const ()
-    25:5-34:6: Goto: goto -&gt; bb53"> {</span></span>
-<span class="line"><span class="code even" style="--layer: 8" title="bb36: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
-    26:9-26:23: Assign: _21 = move (_27.0: i32)
-    25:22-27:6: Assign: _24 = const ()
-    25:5-34:6: Goto: goto -&gt; bb53">        </span><span class="code odd" style="--layer: 9" title="bb35: ../instrument-coverage/coverage_of_if_else.rs:26:9: 26:23:
+    25:5-34:6: SwitchInt: switchInt(_25) -&gt; [false: bb31, otherwise: bb30]"><span class="annotation">29⦊</span>countdown &gt; 7<span class="annotation">⦉29</span></span><span class="code even" style="--layer: 3" title="bb30: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
+    25:5-34:6: FalseEdge: falseEdge -&gt; [real: bb32, imaginary: bb31]"> {</span></span>
+<span class="line"><span class="code even" style="--layer: 3" title="bb30: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
+    25:5-34:6: FalseEdge: falseEdge -&gt; [real: bb32, imaginary: bb31]">        </span><span class="code odd" style="--layer: 4" title="bb32: ../instrument-coverage/coverage_of_if_else.rs:26:9: 26:23:
     26:9-26:23: Assign: _27 = CheckedSub(_21, const 4_i32)
-    26:9-26:23: Assert: assert(!move (_27.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _21, const 4_i32) -&gt; [success: bb36, unwind: bb1]"><span class="annotation">35⦊</span>countdown -= 4<span class="annotation">⦉35</span></span><span class="code even" style="--layer: 8" title="bb36: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
-    26:9-26:23: Assign: _21 = move (_27.0: i32)
-    25:22-27:6: Assign: _24 = const ()
-    25:5-34:6: Goto: goto -&gt; bb53">;</span></span>
-<span class="line"><span class="code even" style="--layer: 8" title="bb36: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
-    26:9-26:23: Assign: _21 = move (_27.0: i32)
-    25:22-27:6: Assign: _24 = const ()
-    25:5-34:6: Goto: goto -&gt; bb53">    } else </span><span class="code even" style="--layer: 9" title="bb37: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
-    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb39, imaginary: bb38]"><span class="annotation">37⦊</span>if </span><span class="code even" style="--layer: 10" title="bb34: ../instrument-coverage/coverage_of_if_else.rs:27:15: 27:28:
+    26:9-26:23: Assert: assert(!move (_27.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _21, const 4_i32) -&gt; [success: bb33, unwind: bb78]"><span class="annotation">32⦊</span>countdown -= 4<span class="annotation">⦉32</span></span><span class="code even" style="--layer: 3" title="bb30: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
+    25:5-34:6: FalseEdge: falseEdge -&gt; [real: bb32, imaginary: bb31]">;</span></span>
+<span class="line"><span class="code even" style="--layer: 3" title="bb30: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
+    25:5-34:6: FalseEdge: falseEdge -&gt; [real: bb32, imaginary: bb31]">    } else </span><span class="code even" style="--layer: 4" title="bb34: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
+    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb36, imaginary: bb35]"><span class="annotation">34⦊</span>if </span><span class="code even" style="--layer: 5" title="bb31: ../instrument-coverage/coverage_of_if_else.rs:27:15: 27:28:
     27:15-27:28: StorageLive: StorageLive(_28)
     27:15-27:24: StorageLive: StorageLive(_29)
     27:15-27:24: Assign: _29 = _21
     27:15-27:28: Assign: _28 = Gt(move _29, const 2_i32)
     27:27-27:28: StorageDead: StorageDead(_29)
     27:15-27:28: FakeRead: FakeRead(ForMatchedPlace, _28)
-    27:12-34:6: SwitchInt: switchInt(_28) -&gt; [false: bb38, otherwise: bb37]"><span class="annotation">34⦊</span>countdown &gt; 2<span class="annotation">⦉34</span></span><span class="code even" style="--layer: 9" title="bb37: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
-    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb39, imaginary: bb38]"> {</span></span>
-<span class="line"><span class="code even" style="--layer: 9" title="bb37: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
-    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb39, imaginary: bb38]">        </span><span class="code odd" style="--layer: 10" title="bb48: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
-    28:9-30:10: FalseEdge: falseEdge -&gt; [real: bb50, imaginary: bb49]"><span class="annotation">48⦊</span></span><span class="code even" style="--layer: 11" title="bb50: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
+    27:12-34:6: SwitchInt: switchInt(_28) -&gt; [false: bb35, otherwise: bb34]"><span class="annotation">31⦊</span>countdown &gt; 2<span class="annotation">⦉31</span></span><span class="code even" style="--layer: 4" title="bb34: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
+    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb36, imaginary: bb35]"> {</span></span>
+<span class="line"><span class="code even" style="--layer: 4" title="bb34: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
+    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb36, imaginary: bb35]">        </span><span class="code odd" style="--layer: 5" title="bb46: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
+    28:9-30:10: Assign: _30 = const ()
+    28:9-30:10: Goto: goto -&gt; bb48"><span class="annotation">46⦊</span></span><span class="code even" style="--layer: 6" title="bb47: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
     29:13-29:26: Assign: _21 = const 0_i32
     28:61-30:10: Assign: _30 = const ()
-    28:9-30:10: Goto: goto -&gt; bb51"><span class="annotation">50⦊</span></span><span class="code even" style="--layer: 12" title="bb49: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
-    28:9-30:10: Assign: _30 = const ()
-    28:9-30:10: Goto: goto -&gt; bb51"><span class="annotation">49⦊</span>if </span><span class="code even" style="--layer: 13" title="bb39: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
+    28:9-30:10: Goto: goto -&gt; bb48"><span class="annotation">47⦊</span></span><span class="code even" style="--layer: 7" title="bb45: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
+    28:9-30:10: FalseEdge: falseEdge -&gt; [real: bb47, imaginary: bb46]"><span class="annotation">45⦊</span>if </span><span class="code even" style="--layer: 8" title="bb44: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
+    28:41-28:42: StorageDead: StorageDead(_35)
+    28:41-28:42: StorageDead: StorageDead(_33)
+    28:12-28:60: SwitchInt: switchInt(move _32) -&gt; [false: bb39, otherwise: bb37]"><span class="annotation">44⦊</span></span><span class="code even" style="--layer: 9" title="bb38: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
+    28:12-28:60: Assign: _31 = const false
+    28:12-28:60: Goto: goto -&gt; bb40"><span class="annotation">38⦊</span></span><span class="code even" style="--layer: 10" title="bb39: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
+    28:46-28:60: StorageLive: StorageLive(_37)
+    28:46-28:55: StorageLive: StorageLive(_38)
+    28:46-28:55: Assign: _38 = _21
+    28:46-28:60: Assign: _37 = Ne(move _38, const 9_i32)
+    28:59-28:60: StorageDead: StorageDead(_38)
+    28:12-28:60: SwitchInt: switchInt(move _37) -&gt; [false: bb38, otherwise: bb37]"><span class="annotation">39⦊</span></span><span class="code even" style="--layer: 11" title="bb40: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
+    28:59-28:60: StorageDead: StorageDead(_37)
+    28:59-28:60: StorageDead: StorageDead(_32)
+    28:12-28:60: FakeRead: FakeRead(ForMatchedPlace, _31)
+    28:9-30:10: SwitchInt: switchInt(_31) -&gt; [false: bb46, otherwise: bb45]"><span class="annotation">40⦊</span></span><span class="code even" style="--layer: 12" title="bb36: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
     28:9-30:10: StorageLive: StorageLive(_30)
     28:12-28:60: StorageLive: StorageLive(_31)
     28:12-28:42: StorageLive: StorageLive(_32)
@@ -386,59 +352,25 @@
     28:12-28:21: Assign: _34 = _21
     28:12-28:25: Assign: _33 = Lt(move _34, const 1_i32)
     28:24-28:25: StorageDead: StorageDead(_34)
-    28:12-28:42: SwitchInt: switchInt(move _33) -&gt; [false: bb46, otherwise: bb44]"><span class="annotation">39⦊</span></span><span class="code even" style="--layer: 14" title="bb47: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
-    28:41-28:42: StorageDead: StorageDead(_35)
-    28:41-28:42: StorageDead: StorageDead(_33)
-    28:12-28:60: SwitchInt: switchInt(move _32) -&gt; [false: bb42, otherwise: bb40]"><span class="annotation">47⦊</span></span><span class="code even" style="--layer: 15" title="bb40: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
+    28:12-28:42: SwitchInt: switchInt(move _33) -&gt; [false: bb43, otherwise: bb41]"><span class="annotation">36⦊</span></span><span class="code even" style="--layer: 13" title="bb37: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
     28:12-28:60: Assign: _31 = const true
-    28:12-28:60: Goto: goto -&gt; bb43"><span class="annotation">40⦊</span></span><span class="code even" style="--layer: 16" title="bb43: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
-    28:59-28:60: StorageDead: StorageDead(_37)
-    28:59-28:60: StorageDead: StorageDead(_32)
-    28:12-28:60: FakeRead: FakeRead(ForMatchedPlace, _31)
-    28:9-30:10: SwitchInt: switchInt(_31) -&gt; [false: bb49, otherwise: bb48]"><span class="annotation">43⦊</span></span><span class="code even" style="--layer: 17" title="bb42: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
-    28:46-28:60: StorageLive: StorageLive(_37)
-    28:46-28:55: StorageLive: StorageLive(_38)
-    28:46-28:55: Assign: _38 = _21
-    28:46-28:60: Assign: _37 = Ne(move _38, const 9_i32)
-    28:59-28:60: StorageDead: StorageDead(_38)
-    28:12-28:60: SwitchInt: switchInt(move _37) -&gt; [false: bb41, otherwise: bb40]"><span class="annotation">42⦊</span></span><span class="code even" style="--layer: 18" title="bb41: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
-    28:12-28:60: Assign: _31 = const false
-    28:12-28:60: Goto: goto -&gt; bb43"><span class="annotation">41⦊</span></span><span class="code even" style="--layer: 19" title="bb46: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:42:
-    28:29-28:42: StorageLive: StorageLive(_35)
-    28:29-28:38: StorageLive: StorageLive(_36)
-    28:29-28:38: Assign: _36 = _21
-    28:29-28:42: Assign: _35 = Gt(move _36, const 5_i32)
-    28:41-28:42: StorageDead: StorageDead(_36)
-    28:12-28:42: SwitchInt: switchInt(move _35) -&gt; [false: bb45, otherwise: bb44]"><span class="annotation">46⦊</span></span><span class="code even" style="--layer: 20" title="bb45: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:42:
-    28:12-28:42: Assign: _32 = const false
-    28:12-28:42: Goto: goto -&gt; bb47"><span class="annotation">45⦊</span></span><span class="code even" style="--layer: 21" title="bb44: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:42:
+    28:12-28:60: Goto: goto -&gt; bb40"><span class="annotation">37⦊</span></span><span class="code even" style="--layer: 14" title="bb41: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:42:
     28:12-28:42: Assign: _32 = const true
-    28:12-28:42: Goto: goto -&gt; bb47"><span class="annotation">44⦊</span>countdown &lt; 1 || countdown &gt; 5<span class="annotation">⦉44</span></span><span class="code even" style="--layer: 20" title="bb45: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:42:
+    28:12-28:42: Goto: goto -&gt; bb44"><span class="annotation">41⦊</span></span><span class="code even" style="--layer: 15" title="bb42: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:42:
     28:12-28:42: Assign: _32 = const false
-    28:12-28:42: Goto: goto -&gt; bb47"><span class="annotation">⦉45</span></span><span class="code even" style="--layer: 19" title="bb46: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:42:
+    28:12-28:42: Goto: goto -&gt; bb44"><span class="annotation">42⦊</span></span><span class="code even" style="--layer: 16" title="bb43: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:42:
     28:29-28:42: StorageLive: StorageLive(_35)
     28:29-28:38: StorageLive: StorageLive(_36)
     28:29-28:38: Assign: _36 = _21
     28:29-28:42: Assign: _35 = Gt(move _36, const 5_i32)
     28:41-28:42: StorageDead: StorageDead(_36)
-    28:12-28:42: SwitchInt: switchInt(move _35) -&gt; [false: bb45, otherwise: bb44]"><span class="annotation">⦉46</span></span><span class="code even" style="--layer: 18" title="bb41: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
-    28:12-28:60: Assign: _31 = const false
-    28:12-28:60: Goto: goto -&gt; bb43"> || countdown != 9<span class="annotation">⦉41</span></span><span class="code even" style="--layer: 17" title="bb42: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
-    28:46-28:60: StorageLive: StorageLive(_37)
-    28:46-28:55: StorageLive: StorageLive(_38)
-    28:46-28:55: Assign: _38 = _21
-    28:46-28:60: Assign: _37 = Ne(move _38, const 9_i32)
-    28:59-28:60: StorageDead: StorageDead(_38)
-    28:12-28:60: SwitchInt: switchInt(move _37) -&gt; [false: bb41, otherwise: bb40]"><span class="annotation">⦉42</span></span><span class="code even" style="--layer: 16" title="bb43: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
-    28:59-28:60: StorageDead: StorageDead(_37)
-    28:59-28:60: StorageDead: StorageDead(_32)
-    28:12-28:60: FakeRead: FakeRead(ForMatchedPlace, _31)
-    28:9-30:10: SwitchInt: switchInt(_31) -&gt; [false: bb49, otherwise: bb48]"><span class="annotation">⦉43</span></span><span class="code even" style="--layer: 15" title="bb40: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
+    28:12-28:42: SwitchInt: switchInt(move _35) -&gt; [false: bb42, otherwise: bb41]"><span class="annotation">43⦊</span>countdown &lt; 1 || countdown &gt; 5<span class="annotation">⦉43</span></span><span class="code even" style="--layer: 15" title="bb42: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:42:
+    28:12-28:42: Assign: _32 = const false
+    28:12-28:42: Goto: goto -&gt; bb44"><span class="annotation">⦉42</span></span><span class="code even" style="--layer: 14" title="bb41: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:42:
+    28:12-28:42: Assign: _32 = const true
+    28:12-28:42: Goto: goto -&gt; bb44"><span class="annotation">⦉41</span></span><span class="code even" style="--layer: 13" title="bb37: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
     28:12-28:60: Assign: _31 = const true
-    28:12-28:60: Goto: goto -&gt; bb43"><span class="annotation">⦉40</span></span><span class="code even" style="--layer: 14" title="bb47: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
-    28:41-28:42: StorageDead: StorageDead(_35)
-    28:41-28:42: StorageDead: StorageDead(_33)
-    28:12-28:60: SwitchInt: switchInt(move _32) -&gt; [false: bb42, otherwise: bb40]"><span class="annotation">⦉47</span></span><span class="code even" style="--layer: 13" title="bb39: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
+    28:12-28:60: Goto: goto -&gt; bb40"> || countdown != 9<span class="annotation">⦉37</span></span><span class="code even" style="--layer: 12" title="bb36: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
     28:9-30:10: StorageLive: StorageLive(_30)
     28:12-28:60: StorageLive: StorageLive(_31)
     28:12-28:42: StorageLive: StorageLive(_32)
@@ -447,104 +379,71 @@
     28:12-28:21: Assign: _34 = _21
     28:12-28:25: Assign: _33 = Lt(move _34, const 1_i32)
     28:24-28:25: StorageDead: StorageDead(_34)
-    28:12-28:42: SwitchInt: switchInt(move _33) -&gt; [false: bb46, otherwise: bb44]"><span class="annotation">⦉39</span></span><span class="code even" style="--layer: 12" title="bb49: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
-    28:9-30:10: Assign: _30 = const ()
-    28:9-30:10: Goto: goto -&gt; bb51"> {</span></span>
-<span class="line"><span class="code even" style="--layer: 12" title="bb49: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
-    28:9-30:10: Assign: _30 = const ()
-    28:9-30:10: Goto: goto -&gt; bb51">            countdown = 0;</span></span>
-<span class="line"><span class="code even" style="--layer: 12" title="bb49: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
-    28:9-30:10: Assign: _30 = const ()
-    28:9-30:10: Goto: goto -&gt; bb51">        </span><span class="code odd" style="--layer: 13" title="bb51: ../instrument-coverage/coverage_of_if_else.rs:30:9: 31:23:
+    28:12-28:42: SwitchInt: switchInt(move _33) -&gt; [false: bb43, otherwise: bb41]"><span class="annotation">⦉36</span></span><span class="code even" style="--layer: 11" title="bb40: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
+    28:59-28:60: StorageDead: StorageDead(_37)
+    28:59-28:60: StorageDead: StorageDead(_32)
+    28:12-28:60: FakeRead: FakeRead(ForMatchedPlace, _31)
+    28:9-30:10: SwitchInt: switchInt(_31) -&gt; [false: bb46, otherwise: bb45]"><span class="annotation">⦉40</span></span><span class="code even" style="--layer: 10" title="bb39: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
+    28:46-28:60: StorageLive: StorageLive(_37)
+    28:46-28:55: StorageLive: StorageLive(_38)
+    28:46-28:55: Assign: _38 = _21
+    28:46-28:60: Assign: _37 = Ne(move _38, const 9_i32)
+    28:59-28:60: StorageDead: StorageDead(_38)
+    28:12-28:60: SwitchInt: switchInt(move _37) -&gt; [false: bb38, otherwise: bb37]"><span class="annotation">⦉39</span></span><span class="code even" style="--layer: 9" title="bb38: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
+    28:12-28:60: Assign: _31 = const false
+    28:12-28:60: Goto: goto -&gt; bb40"><span class="annotation">⦉38</span></span><span class="code even" style="--layer: 8" title="bb44: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
+    28:41-28:42: StorageDead: StorageDead(_35)
+    28:41-28:42: StorageDead: StorageDead(_33)
+    28:12-28:60: SwitchInt: switchInt(move _32) -&gt; [false: bb39, otherwise: bb37]"><span class="annotation">⦉44</span></span><span class="code even" style="--layer: 7" title="bb45: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
+    28:9-30:10: FalseEdge: falseEdge -&gt; [real: bb47, imaginary: bb46]"> {</span></span>
+<span class="line"><span class="code even" style="--layer: 7" title="bb45: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
+    28:9-30:10: FalseEdge: falseEdge -&gt; [real: bb47, imaginary: bb46]">            countdown = 0;</span></span>
+<span class="line"><span class="code even" style="--layer: 7" title="bb45: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
+    28:9-30:10: FalseEdge: falseEdge -&gt; [real: bb47, imaginary: bb46]">        </span><span class="code odd" style="--layer: 8" title="bb48: ../instrument-coverage/coverage_of_if_else.rs:30:9: 31:23:
     30:9-30:10: StorageDead: StorageDead(_31)
     30:9-30:10: StorageDead: StorageDead(_30)
     31:9-31:23: Assign: _39 = CheckedSub(_21, const 5_i32)
-    31:9-31:23: Assert: assert(!move (_39.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _21, const 5_i32) -&gt; [success: bb52, unwind: bb1]"><span class="annotation">51⦊</span>}</span><span class="code odd" style="--layer: 10" title="bb48: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
-    28:9-30:10: FalseEdge: falseEdge -&gt; [real: bb50, imaginary: bb49]"><span class="annotation">⦉48</span></span><span class="code even" style="--layer: 11" title="bb50: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
+    31:9-31:23: Assert: assert(!move (_39.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _21, const 5_i32) -&gt; [success: bb49, unwind: bb78]"><span class="annotation">48⦊</span>}</span><span class="code odd" style="--layer: 5" title="bb46: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
+    28:9-30:10: Assign: _30 = const ()
+    28:9-30:10: Goto: goto -&gt; bb48"><span class="annotation">⦉46</span></span><span class="code even" style="--layer: 6" title="bb47: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
     29:13-29:26: Assign: _21 = const 0_i32
     28:61-30:10: Assign: _30 = const ()
-    28:9-30:10: Goto: goto -&gt; bb51"><span class="annotation">⦉50</span></span><span class="code even" style="--layer: 12" title="bb49: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
-    28:9-30:10: Assign: _30 = const ()
-    28:9-30:10: Goto: goto -&gt; bb51"><span class="annotation">⦉49</span></span><span class="code even" style="--layer: 12" title="bb49: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
-    28:9-30:10: Assign: _30 = const ()
-    28:9-30:10: Goto: goto -&gt; bb51"><span class="annotation">⦉49</span></span><span class="code odd" style="--layer: 13" title="bb51: ../instrument-coverage/coverage_of_if_else.rs:30:9: 31:23:
+    28:9-30:10: Goto: goto -&gt; bb48"><span class="annotation">⦉47</span></span><span class="code even" style="--layer: 7" title="bb45: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
+    28:9-30:10: FalseEdge: falseEdge -&gt; [real: bb47, imaginary: bb46]"><span class="annotation">⦉45</span></span><span class="code even" style="--layer: 7" title="bb45: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
+    28:9-30:10: FalseEdge: falseEdge -&gt; [real: bb47, imaginary: bb46]"><span class="annotation">⦉45</span></span><span class="code odd" style="--layer: 8" title="bb48: ../instrument-coverage/coverage_of_if_else.rs:30:9: 31:23:
     30:9-30:10: StorageDead: StorageDead(_31)
     30:9-30:10: StorageDead: StorageDead(_30)
     31:9-31:23: Assign: _39 = CheckedSub(_21, const 5_i32)
-    31:9-31:23: Assert: assert(!move (_39.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _21, const 5_i32) -&gt; [success: bb52, unwind: bb1]"></span></span>
-<span class="line"><span class="code odd" style="--layer: 13" title="bb51: ../instrument-coverage/coverage_of_if_else.rs:30:9: 31:23:
+    31:9-31:23: Assert: assert(!move (_39.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _21, const 5_i32) -&gt; [success: bb49, unwind: bb78]"></span></span>
+<span class="line"><span class="code odd" style="--layer: 8" title="bb48: ../instrument-coverage/coverage_of_if_else.rs:30:9: 31:23:
     30:9-30:10: StorageDead: StorageDead(_31)
     30:9-30:10: StorageDead: StorageDead(_30)
     31:9-31:23: Assign: _39 = CheckedSub(_21, const 5_i32)
-    31:9-31:23: Assert: assert(!move (_39.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _21, const 5_i32) -&gt; [success: bb52, unwind: bb1]">        countdown -= 5<span class="annotation">⦉51</span></span><span class="code even" style="--layer: 9" title="bb37: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
-    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb39, imaginary: bb38]">;</span></span>
-<span class="line"><span class="code even" style="--layer: 9" title="bb37: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
-    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb39, imaginary: bb38]">    } else {</span></span>
-<span class="line"><span class="code even" style="--layer: 9" title="bb37: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
-    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb39, imaginary: bb38]">        </span><span class="code even" style="--layer: 10" title="bb38: ../instrument-coverage/coverage_of_if_else.rs:33:9: 51:2:
-    33:9-33:15: Assign: _0 = const ()
-    34:5-34:6: StorageDead: StorageDead(_28)
-    34:5-34:6: StorageDead: StorageDead(_25)
-    34:5-34:6: StorageDead: StorageDead(_24)
-    51:1-51:2: StorageDead: StorageDead(_21)
-    33:9-33:15: Goto: goto -&gt; bb27"><span class="annotation">38⦊</span>return;</span></span>
-<span class="line"><span class="code even" style="--layer: 10" title="bb38: ../instrument-coverage/coverage_of_if_else.rs:33:9: 51:2:
-    33:9-33:15: Assign: _0 = const ()
-    34:5-34:6: StorageDead: StorageDead(_28)
-    34:5-34:6: StorageDead: StorageDead(_25)
-    34:5-34:6: StorageDead: StorageDead(_24)
-    51:1-51:2: StorageDead: StorageDead(_21)
-    33:9-33:15: Goto: goto -&gt; bb27">    }</span><span class="code even" style="--layer: 6" title="bb33: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
-    25:5-34:6: FalseEdge: falseEdge -&gt; [real: bb35, imaginary: bb34]"><span class="annotation">⦉33</span></span><span class="code even" style="--layer: 7" title="bb52: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
-    31:9-31:23: Assign: _21 = move (_39.0: i32)
-    27:29-32:6: Assign: _24 = const ()
-    34:5-34:6: StorageDead: StorageDead(_28)
-    25:5-34:6: Goto: goto -&gt; bb53"><span class="annotation">⦉52</span></span><span class="code even" style="--layer: 8" title="bb36: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
+    31:9-31:23: Assert: assert(!move (_39.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _21, const 5_i32) -&gt; [success: bb49, unwind: bb78]">        countdown -= 5<span class="annotation">⦉48</span></span><span class="code even" style="--layer: 4" title="bb34: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
+    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb36, imaginary: bb35]">;</span></span>
+<span class="line"><span class="code even" style="--layer: 4" title="bb34: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
+    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb36, imaginary: bb35]">    } else {</span></span>
+<span class="line"><span class="code even" style="--layer: 4" title="bb34: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
+    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb36, imaginary: bb35]">        return;</span></span>
+<span class="line"><span class="code even" style="--layer: 4" title="bb34: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
+    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb36, imaginary: bb35]">    }<span class="annotation">⦉34</span></span><span class="code even" style="--layer: 3" title="bb30: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
+    25:5-34:6: FalseEdge: falseEdge -&gt; [real: bb32, imaginary: bb31]"><span class="annotation">⦉30</span></span><span class="code even" style="--layer: 2" title="bb33: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
     26:9-26:23: Assign: _21 = move (_27.0: i32)
     25:22-27:6: Assign: _24 = const ()
-    25:5-34:6: Goto: goto -&gt; bb53"><span class="annotation">⦉36</span></span><span class="code even" style="--layer: 8" title="bb36: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
-    26:9-26:23: Assign: _21 = move (_27.0: i32)
-    25:22-27:6: Assign: _24 = const ()
-    25:5-34:6: Goto: goto -&gt; bb53"><span class="annotation">⦉36</span></span><span class="code even" style="--layer: 8" title="bb36: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
-    26:9-26:23: Assign: _21 = move (_27.0: i32)
-    25:22-27:6: Assign: _24 = const ()
-    25:5-34:6: Goto: goto -&gt; bb53"><span class="annotation">⦉36</span></span><span class="code even" style="--layer: 9" title="bb37: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
-    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb39, imaginary: bb38]"><span class="annotation">⦉37</span></span><span class="code even" style="--layer: 9" title="bb37: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
-    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb39, imaginary: bb38]"><span class="annotation">⦉37</span></span><span class="code even" style="--layer: 9" title="bb37: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
-    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb39, imaginary: bb38]"><span class="annotation">⦉37</span></span><span class="code even" style="--layer: 10" title="bb38: ../instrument-coverage/coverage_of_if_else.rs:33:9: 51:2:
-    33:9-33:15: Assign: _0 = const ()
-    34:5-34:6: StorageDead: StorageDead(_28)
-    34:5-34:6: StorageDead: StorageDead(_25)
-    34:5-34:6: StorageDead: StorageDead(_24)
-    51:1-51:2: StorageDead: StorageDead(_21)
-    33:9-33:15: Goto: goto -&gt; bb27"></span></span>
-<span class="line"><span class="code even" style="--layer: 10" title="bb38: ../instrument-coverage/coverage_of_if_else.rs:33:9: 51:2:
-    33:9-33:15: Assign: _0 = const ()
-    34:5-34:6: StorageDead: StorageDead(_28)
-    34:5-34:6: StorageDead: StorageDead(_25)
-    34:5-34:6: StorageDead: StorageDead(_24)
-    51:1-51:2: StorageDead: StorageDead(_21)
-    33:9-33:15: Goto: goto -&gt; bb27"></span></span>
-<span class="line"><span class="code even" style="--layer: 10" title="bb38: ../instrument-coverage/coverage_of_if_else.rs:33:9: 51:2:
-    33:9-33:15: Assign: _0 = const ()
-    34:5-34:6: StorageDead: StorageDead(_28)
-    34:5-34:6: StorageDead: StorageDead(_25)
-    34:5-34:6: StorageDead: StorageDead(_24)
-    51:1-51:2: StorageDead: StorageDead(_21)
-    33:9-33:15: Goto: goto -&gt; bb27">    let mut countdown = 0;</span></span>
-<span class="line"><span class="code even" style="--layer: 10" title="bb38: ../instrument-coverage/coverage_of_if_else.rs:33:9: 51:2:
-    33:9-33:15: Assign: _0 = const ()
+    25:5-34:6: Goto: goto -&gt; bb50"><span class="annotation">⦉33</span></span><span><span class="code odd" style="--layer: 1" title="bb49: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
+    31:9-31:23: Assign: _21 = move (_39.0: i32)
+    27:29-32:6: Assign: _24 = const ()
     34:5-34:6: StorageDead: StorageDead(_28)
-    34:5-34:6: StorageDead: StorageDead(_25)
-    34:5-34:6: StorageDead: StorageDead(_24)
-    51:1-51:2: StorageDead: StorageDead(_21)
-    33:9-33:15: Goto: goto -&gt; bb27">    </span><span class="code even" style="--layer: 11" title="bb56: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
+    25:5-34:6: Goto: goto -&gt; bb50"><span class="annotation">⦉49</span></span></span><span class="code" style="--layer: 0"></span></span>
+<span class="line"><span class="code" style="--layer: 0"></span></span>
+<span class="line"><span class="code" style="--layer: 0">    let mut countdown = 0;</span></span>
+<span class="line"><span class="code" style="--layer: 0">    </span><span><span class="code even" style="--layer: 1" title="bb52: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
+    37:5-39:6: Assign: _42 = const ()
+    37:5-39:6: Goto: goto -&gt; bb54"><span class="annotation">52⦊</span></span></span><span class="code even" style="--layer: 2" title="bb51: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
+    37:5-39:6: FalseEdge: falseEdge -&gt; [real: bb53, imaginary: bb52]"><span class="annotation">51⦊</span></span><span class="code even" style="--layer: 3" title="bb53: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
     38:9-38:23: Assign: _41 = const 10_i32
     37:13-39:6: Assign: _42 = const ()
-    37:5-39:6: Goto: goto -&gt; bb57"><span class="annotation">56⦊</span></span><span class="code even" style="--layer: 12" title="bb54: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
-    37:5-39:6: FalseEdge: falseEdge -&gt; [real: bb56, imaginary: bb55]"><span class="annotation">54⦊</span></span><span class="code even" style="--layer: 13" title="bb55: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
-    37:5-39:6: Assign: _42 = const ()
-    37:5-39:6: Goto: goto -&gt; bb57"><span class="annotation">55⦊</span>if </span><span class="code even" style="--layer: 14" title="bb53: ../instrument-coverage/coverage_of_if_else.rs:37:8: 37:12:
+    37:5-39:6: Goto: goto -&gt; bb54"><span class="annotation">53⦊</span>if </span><span class="code even" style="--layer: 4" title="bb50: ../instrument-coverage/coverage_of_if_else.rs:37:8: 37:12:
     34:5-34:6: StorageDead: StorageDead(_25)
     34:5-34:6: StorageDead: StorageDead(_24)
     36:9-36:22: StorageLive: StorageLive(_41)
@@ -554,47 +453,31 @@
     37:8-37:12: StorageLive: StorageLive(_43)
     37:8-37:12: Assign: _43 = const true
     37:8-37:12: FakeRead: FakeRead(ForMatchedPlace, _43)
-    37:5-39:6: SwitchInt: switchInt(_43) -&gt; [false: bb55, otherwise: bb54]"><span class="annotation">53⦊</span>true<span class="annotation">⦉53</span></span><span class="code even" style="--layer: 13" title="bb55: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
-    37:5-39:6: Assign: _42 = const ()
-    37:5-39:6: Goto: goto -&gt; bb57"> {</span></span>
-<span class="line"><span class="code even" style="--layer: 13" title="bb55: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
-    37:5-39:6: Assign: _42 = const ()
-    37:5-39:6: Goto: goto -&gt; bb57">        countdown = 10;</span></span>
-<span class="line"><span class="code even" style="--layer: 13" title="bb55: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
-    37:5-39:6: Assign: _42 = const ()
-    37:5-39:6: Goto: goto -&gt; bb57">    }<span class="annotation">⦉55</span></span><span class="code even" style="--layer: 12" title="bb54: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
-    37:5-39:6: FalseEdge: falseEdge -&gt; [real: bb56, imaginary: bb55]"><span class="annotation">⦉54</span></span><span class="code even" style="--layer: 11" title="bb56: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
+    37:5-39:6: SwitchInt: switchInt(_43) -&gt; [false: bb52, otherwise: bb51]"><span class="annotation">50⦊</span>true<span class="annotation">⦉50</span></span><span class="code even" style="--layer: 3" title="bb53: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
     38:9-38:23: Assign: _41 = const 10_i32
     37:13-39:6: Assign: _42 = const ()
-    37:5-39:6: Goto: goto -&gt; bb57"><span class="annotation">⦉56</span></span><span class="code even" style="--layer: 10" title="bb38: ../instrument-coverage/coverage_of_if_else.rs:33:9: 51:2:
-    33:9-33:15: Assign: _0 = const ()
-    34:5-34:6: StorageDead: StorageDead(_28)
-    34:5-34:6: StorageDead: StorageDead(_25)
-    34:5-34:6: StorageDead: StorageDead(_24)
-    51:1-51:2: StorageDead: StorageDead(_21)
-    33:9-33:15: Goto: goto -&gt; bb27"></span></span>
-<span class="line"><span class="code even" style="--layer: 10" title="bb38: ../instrument-coverage/coverage_of_if_else.rs:33:9: 51:2:
-    33:9-33:15: Assign: _0 = const ()
-    34:5-34:6: StorageDead: StorageDead(_28)
-    34:5-34:6: StorageDead: StorageDead(_25)
-    34:5-34:6: StorageDead: StorageDead(_24)
-    51:1-51:2: StorageDead: StorageDead(_21)
-    33:9-33:15: Goto: goto -&gt; bb27"></span></span>
-<span class="line"><span class="code even" style="--layer: 10" title="bb38: ../instrument-coverage/coverage_of_if_else.rs:33:9: 51:2:
-    33:9-33:15: Assign: _0 = const ()
-    34:5-34:6: StorageDead: StorageDead(_28)
-    34:5-34:6: StorageDead: StorageDead(_25)
-    34:5-34:6: StorageDead: StorageDead(_24)
-    51:1-51:2: StorageDead: StorageDead(_21)
-    33:9-33:15: Goto: goto -&gt; bb27">    </span><span class="code odd" style="--layer: 11" title="bb61: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
-    42:9-42:23: Assign: _41 = move (_46.0: i32)
-    41:22-43:6: Assign: _0 = const ()
-    41:5-50:6: Goto: goto -&gt; bb78"><span class="annotation">61⦊</span></span><span class="code even" style="--layer: 12" title="bb58: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
-    41:5-50:6: FalseEdge: falseEdge -&gt; [real: bb60, imaginary: bb59]"><span class="annotation">58⦊</span></span><span class="code even" style="--layer: 13" title="bb77: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
+    37:5-39:6: Goto: goto -&gt; bb54"> {</span></span>
+<span class="line"><span class="code even" style="--layer: 3" title="bb53: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
+    38:9-38:23: Assign: _41 = const 10_i32
+    37:13-39:6: Assign: _42 = const ()
+    37:5-39:6: Goto: goto -&gt; bb54">        countdown = 10;</span></span>
+<span class="line"><span class="code even" style="--layer: 3" title="bb53: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
+    38:9-38:23: Assign: _41 = const 10_i32
+    37:13-39:6: Assign: _42 = const ()
+    37:5-39:6: Goto: goto -&gt; bb54">    }<span class="annotation">⦉53</span></span><span class="code even" style="--layer: 2" title="bb51: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
+    37:5-39:6: FalseEdge: falseEdge -&gt; [real: bb53, imaginary: bb52]"><span class="annotation">⦉51</span></span><span><span class="code even" style="--layer: 1" title="bb52: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
+    37:5-39:6: Assign: _42 = const ()
+    37:5-39:6: Goto: goto -&gt; bb54"><span class="annotation">⦉52</span></span></span><span class="code" style="--layer: 0"></span></span>
+<span class="line"><span class="code" style="--layer: 0"></span></span>
+<span class="line"><span class="code" style="--layer: 0">    </span><span><span class="code odd" style="--layer: 1" title="bb74: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
     47:9-47:23: Assign: _41 = move (_58.0: i32)
     43:29-48:6: Assign: _0 = const ()
     50:5-50:6: StorageDead: StorageDead(_47)
-    41:5-50:6: Goto: goto -&gt; bb78"><span class="annotation">77⦊</span>if </span><span class="code even" style="--layer: 14" title="bb57: ../instrument-coverage/coverage_of_if_else.rs:41:8: 41:21:
+    41:5-50:6: Goto: goto -&gt; bb75"><span class="annotation">74⦊</span></span></span><span class="code even" style="--layer: 2" title="bb55: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
+    41:5-50:6: FalseEdge: falseEdge -&gt; [real: bb57, imaginary: bb56]"><span class="annotation">55⦊</span></span><span class="code even" style="--layer: 3" title="bb58: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
+    42:9-42:23: Assign: _41 = move (_46.0: i32)
+    41:22-43:6: Assign: _0 = const ()
+    41:5-50:6: Goto: goto -&gt; bb75"><span class="annotation">58⦊</span>if </span><span class="code even" style="--layer: 4" title="bb54: ../instrument-coverage/coverage_of_if_else.rs:41:8: 41:21:
     39:5-39:6: StorageDead: StorageDead(_43)
     39:5-39:6: StorageDead: StorageDead(_42)
     41:8-41:21: StorageLive: StorageLive(_44)
@@ -603,59 +486,57 @@
     41:8-41:21: Assign: _44 = Gt(move _45, const 7_i32)
     41:20-41:21: StorageDead: StorageDead(_45)
     41:8-41:21: FakeRead: FakeRead(ForMatchedPlace, _44)
-    41:5-50:6: SwitchInt: switchInt(_44) -&gt; [false: bb59, otherwise: bb58]"><span class="annotation">57⦊</span>countdown &gt; 7<span class="annotation">⦉57</span></span><span class="code even" style="--layer: 13" title="bb77: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
-    47:9-47:23: Assign: _41 = move (_58.0: i32)
-    43:29-48:6: Assign: _0 = const ()
-    50:5-50:6: StorageDead: StorageDead(_47)
-    41:5-50:6: Goto: goto -&gt; bb78"> {</span></span>
-<span class="line"><span class="code even" style="--layer: 13" title="bb77: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
-    47:9-47:23: Assign: _41 = move (_58.0: i32)
-    43:29-48:6: Assign: _0 = const ()
-    50:5-50:6: StorageDead: StorageDead(_47)
-    41:5-50:6: Goto: goto -&gt; bb78">        </span><span class="code odd" style="--layer: 14" title="bb60: ../instrument-coverage/coverage_of_if_else.rs:42:9: 42:23:
+    41:5-50:6: SwitchInt: switchInt(_44) -&gt; [false: bb56, otherwise: bb55]"><span class="annotation">54⦊</span>countdown &gt; 7<span class="annotation">⦉54</span></span><span class="code even" style="--layer: 3" title="bb58: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
+    42:9-42:23: Assign: _41 = move (_46.0: i32)
+    41:22-43:6: Assign: _0 = const ()
+    41:5-50:6: Goto: goto -&gt; bb75"> {</span></span>
+<span class="line"><span class="code even" style="--layer: 3" title="bb58: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
+    42:9-42:23: Assign: _41 = move (_46.0: i32)
+    41:22-43:6: Assign: _0 = const ()
+    41:5-50:6: Goto: goto -&gt; bb75">        </span><span class="code odd" style="--layer: 4" title="bb57: ../instrument-coverage/coverage_of_if_else.rs:42:9: 42:23:
     42:9-42:23: Assign: _46 = CheckedSub(_41, const 4_i32)
-    42:9-42:23: Assert: assert(!move (_46.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _41, const 4_i32) -&gt; [success: bb61, unwind: bb1]"><span class="annotation">60⦊</span>countdown -= 4<span class="annotation">⦉60</span></span><span class="code even" style="--layer: 13" title="bb77: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
-    47:9-47:23: Assign: _41 = move (_58.0: i32)
-    43:29-48:6: Assign: _0 = const ()
-    50:5-50:6: StorageDead: StorageDead(_47)
-    41:5-50:6: Goto: goto -&gt; bb78">;</span></span>
-<span class="line"><span class="code even" style="--layer: 13" title="bb77: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
-    47:9-47:23: Assign: _41 = move (_58.0: i32)
-    43:29-48:6: Assign: _0 = const ()
-    50:5-50:6: StorageDead: StorageDead(_47)
-    41:5-50:6: Goto: goto -&gt; bb78">    } else </span><span class="code even" style="--layer: 14" title="bb62: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
-    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb64, imaginary: bb63]"><span class="annotation">62⦊</span>if </span><span class="code even" style="--layer: 15" title="bb59: ../instrument-coverage/coverage_of_if_else.rs:43:15: 43:28:
+    42:9-42:23: Assert: assert(!move (_46.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _41, const 4_i32) -&gt; [success: bb58, unwind: bb78]"><span class="annotation">57⦊</span>countdown -= 4<span class="annotation">⦉57</span></span><span class="code even" style="--layer: 3" title="bb58: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
+    42:9-42:23: Assign: _41 = move (_46.0: i32)
+    41:22-43:6: Assign: _0 = const ()
+    41:5-50:6: Goto: goto -&gt; bb75">;</span></span>
+<span class="line"><span class="code even" style="--layer: 3" title="bb58: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
+    42:9-42:23: Assign: _41 = move (_46.0: i32)
+    41:22-43:6: Assign: _0 = const ()
+    41:5-50:6: Goto: goto -&gt; bb75">    } else </span><span class="code even" style="--layer: 4" title="bb59: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
+    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb61, imaginary: bb60]"><span class="annotation">59⦊</span>if </span><span class="code even" style="--layer: 5" title="bb56: ../instrument-coverage/coverage_of_if_else.rs:43:15: 43:28:
     43:15-43:28: StorageLive: StorageLive(_47)
     43:15-43:24: StorageLive: StorageLive(_48)
     43:15-43:24: Assign: _48 = _41
     43:15-43:28: Assign: _47 = Gt(move _48, const 2_i32)
     43:27-43:28: StorageDead: StorageDead(_48)
     43:15-43:28: FakeRead: FakeRead(ForMatchedPlace, _47)
-    43:12-50:6: SwitchInt: switchInt(_47) -&gt; [false: bb63, otherwise: bb62]"><span class="annotation">59⦊</span>countdown &gt; 2<span class="annotation">⦉59</span></span><span class="code even" style="--layer: 14" title="bb62: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
-    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb64, imaginary: bb63]"> {</span></span>
-<span class="line"><span class="code even" style="--layer: 14" title="bb62: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
-    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb64, imaginary: bb63]">        </span><span class="code odd" style="--layer: 15" title="bb75: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
+    43:12-50:6: SwitchInt: switchInt(_47) -&gt; [false: bb60, otherwise: bb59]"><span class="annotation">56⦊</span>countdown &gt; 2<span class="annotation">⦉56</span></span><span class="code even" style="--layer: 4" title="bb59: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
+    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb61, imaginary: bb60]"> {</span></span>
+<span class="line"><span class="code even" style="--layer: 4" title="bb59: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
+    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb61, imaginary: bb60]">        </span><span class="code odd" style="--layer: 5" title="bb71: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
+    44:9-46:10: Assign: _49 = const ()
+    44:9-46:10: Goto: goto -&gt; bb73"><span class="annotation">71⦊</span></span><span class="code even" style="--layer: 6" title="bb72: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
     45:13-45:26: Assign: _41 = const 0_i32
     44:61-46:10: Assign: _49 = const ()
-    44:9-46:10: Goto: goto -&gt; bb76"><span class="annotation">75⦊</span></span><span class="code even" style="--layer: 16" title="bb74: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
-    44:9-46:10: Assign: _49 = const ()
-    44:9-46:10: Goto: goto -&gt; bb76"><span class="annotation">74⦊</span></span><span class="code even" style="--layer: 17" title="bb73: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
-    44:9-46:10: FalseEdge: falseEdge -&gt; [real: bb75, imaginary: bb74]"><span class="annotation">73⦊</span>if </span><span class="code even" style="--layer: 18" title="bb67: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
+    44:9-46:10: Goto: goto -&gt; bb73"><span class="annotation">72⦊</span></span><span class="code even" style="--layer: 7" title="bb70: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
+    44:9-46:10: FalseEdge: falseEdge -&gt; [real: bb72, imaginary: bb71]"><span class="annotation">70⦊</span>if </span><span class="code even" style="--layer: 8" title="bb63: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
+    44:12-44:60: Assign: _50 = const false
+    44:12-44:60: Goto: goto -&gt; bb65"><span class="annotation">63⦊</span></span><span class="code even" style="--layer: 9" title="bb64: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
     44:46-44:60: StorageLive: StorageLive(_56)
     44:46-44:55: StorageLive: StorageLive(_57)
     44:46-44:55: Assign: _57 = _41
     44:46-44:60: Assign: _56 = Ne(move _57, const 9_i32)
     44:59-44:60: StorageDead: StorageDead(_57)
-    44:12-44:60: SwitchInt: switchInt(move _56) -&gt; [false: bb66, otherwise: bb65]"><span class="annotation">67⦊</span></span><span class="code even" style="--layer: 19" title="bb68: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
+    44:12-44:60: SwitchInt: switchInt(move _56) -&gt; [false: bb63, otherwise: bb62]"><span class="annotation">64⦊</span></span><span class="code even" style="--layer: 10" title="bb65: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
     44:59-44:60: StorageDead: StorageDead(_56)
     44:59-44:60: StorageDead: StorageDead(_51)
     44:12-44:60: FakeRead: FakeRead(ForMatchedPlace, _50)
-    44:9-46:10: SwitchInt: switchInt(_50) -&gt; [false: bb74, otherwise: bb73]"><span class="annotation">68⦊</span></span><span class="code even" style="--layer: 20" title="bb65: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
+    44:9-46:10: SwitchInt: switchInt(_50) -&gt; [false: bb71, otherwise: bb70]"><span class="annotation">65⦊</span></span><span class="code even" style="--layer: 11" title="bb62: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
     44:12-44:60: Assign: _50 = const true
-    44:12-44:60: Goto: goto -&gt; bb68"><span class="annotation">65⦊</span></span><span class="code even" style="--layer: 21" title="bb72: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
+    44:12-44:60: Goto: goto -&gt; bb65"><span class="annotation">62⦊</span></span><span class="code even" style="--layer: 12" title="bb69: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
     44:41-44:42: StorageDead: StorageDead(_54)
     44:41-44:42: StorageDead: StorageDead(_52)
-    44:12-44:60: SwitchInt: switchInt(move _51) -&gt; [false: bb67, otherwise: bb65]"><span class="annotation">72⦊</span></span><span class="code even" style="--layer: 22" title="bb64: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
+    44:12-44:60: SwitchInt: switchInt(move _51) -&gt; [false: bb64, otherwise: bb62]"><span class="annotation">69⦊</span></span><span class="code even" style="--layer: 13" title="bb61: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
     44:9-46:10: StorageLive: StorageLive(_49)
     44:12-44:60: StorageLive: StorageLive(_50)
     44:12-44:42: StorageLive: StorageLive(_51)
@@ -664,29 +545,25 @@
     44:12-44:21: Assign: _53 = _41
     44:12-44:25: Assign: _52 = Lt(move _53, const 1_i32)
     44:24-44:25: StorageDead: StorageDead(_53)
-    44:12-44:42: SwitchInt: switchInt(move _52) -&gt; [false: bb71, otherwise: bb69]"><span class="annotation">64⦊</span></span><span class="code even" style="--layer: 23" title="bb66: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
-    44:12-44:60: Assign: _50 = const false
-    44:12-44:60: Goto: goto -&gt; bb68"><span class="annotation">66⦊</span></span><span class="code even" style="--layer: 24" title="bb69: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:42:
-    44:12-44:42: Assign: _51 = const true
-    44:12-44:42: Goto: goto -&gt; bb72"><span class="annotation">69⦊</span></span><span class="code even" style="--layer: 25" title="bb71: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:42:
+    44:12-44:42: SwitchInt: switchInt(move _52) -&gt; [false: bb68, otherwise: bb66]"><span class="annotation">61⦊</span></span><span class="code even" style="--layer: 14" title="bb67: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:42:
+    44:12-44:42: Assign: _51 = const false
+    44:12-44:42: Goto: goto -&gt; bb69"><span class="annotation">67⦊</span></span><span class="code even" style="--layer: 15" title="bb68: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:42:
     44:29-44:42: StorageLive: StorageLive(_54)
     44:29-44:38: StorageLive: StorageLive(_55)
     44:29-44:38: Assign: _55 = _41
     44:29-44:42: Assign: _54 = Gt(move _55, const 5_i32)
     44:41-44:42: StorageDead: StorageDead(_55)
-    44:12-44:42: SwitchInt: switchInt(move _54) -&gt; [false: bb70, otherwise: bb69]"><span class="annotation">71⦊</span></span><span class="code even" style="--layer: 26" title="bb70: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:42:
-    44:12-44:42: Assign: _51 = const false
-    44:12-44:42: Goto: goto -&gt; bb72"><span class="annotation">70⦊</span>countdown &lt; 1 || countdown &gt; 5<span class="annotation">⦉70</span></span><span class="code even" style="--layer: 25" title="bb71: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:42:
+    44:12-44:42: SwitchInt: switchInt(move _54) -&gt; [false: bb67, otherwise: bb66]"><span class="annotation">68⦊</span></span><span class="code even" style="--layer: 16" title="bb66: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:42:
+    44:12-44:42: Assign: _51 = const true
+    44:12-44:42: Goto: goto -&gt; bb69"><span class="annotation">66⦊</span>countdown &lt; 1 || countdown &gt; 5<span class="annotation">⦉66</span></span><span class="code even" style="--layer: 15" title="bb68: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:42:
     44:29-44:42: StorageLive: StorageLive(_54)
     44:29-44:38: StorageLive: StorageLive(_55)
     44:29-44:38: Assign: _55 = _41
     44:29-44:42: Assign: _54 = Gt(move _55, const 5_i32)
     44:41-44:42: StorageDead: StorageDead(_55)
-    44:12-44:42: SwitchInt: switchInt(move _54) -&gt; [false: bb70, otherwise: bb69]"><span class="annotation">⦉71</span></span><span class="code even" style="--layer: 24" title="bb69: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:42:
-    44:12-44:42: Assign: _51 = const true
-    44:12-44:42: Goto: goto -&gt; bb72"><span class="annotation">⦉69</span></span><span class="code even" style="--layer: 23" title="bb66: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
-    44:12-44:60: Assign: _50 = const false
-    44:12-44:60: Goto: goto -&gt; bb68"> || countdown != 9<span class="annotation">⦉66</span></span><span class="code even" style="--layer: 22" title="bb64: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
+    44:12-44:42: SwitchInt: switchInt(move _54) -&gt; [false: bb67, otherwise: bb66]"><span class="annotation">⦉68</span></span><span class="code even" style="--layer: 14" title="bb67: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:42:
+    44:12-44:42: Assign: _51 = const false
+    44:12-44:42: Goto: goto -&gt; bb69"><span class="annotation">⦉67</span></span><span class="code even" style="--layer: 13" title="bb61: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
     44:9-46:10: StorageLive: StorageLive(_49)
     44:12-44:60: StorageLive: StorageLive(_50)
     44:12-44:42: StorageLive: StorageLive(_51)
@@ -695,114 +572,70 @@
     44:12-44:21: Assign: _53 = _41
     44:12-44:25: Assign: _52 = Lt(move _53, const 1_i32)
     44:24-44:25: StorageDead: StorageDead(_53)
-    44:12-44:42: SwitchInt: switchInt(move _52) -&gt; [false: bb71, otherwise: bb69]"><span class="annotation">⦉64</span></span><span class="code even" style="--layer: 21" title="bb72: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
+    44:12-44:42: SwitchInt: switchInt(move _52) -&gt; [false: bb68, otherwise: bb66]"> || countdown != 9<span class="annotation">⦉61</span></span><span class="code even" style="--layer: 12" title="bb69: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
     44:41-44:42: StorageDead: StorageDead(_54)
     44:41-44:42: StorageDead: StorageDead(_52)
-    44:12-44:60: SwitchInt: switchInt(move _51) -&gt; [false: bb67, otherwise: bb65]"><span class="annotation">⦉72</span></span><span class="code even" style="--layer: 20" title="bb65: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
+    44:12-44:60: SwitchInt: switchInt(move _51) -&gt; [false: bb64, otherwise: bb62]"><span class="annotation">⦉69</span></span><span class="code even" style="--layer: 11" title="bb62: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
     44:12-44:60: Assign: _50 = const true
-    44:12-44:60: Goto: goto -&gt; bb68"><span class="annotation">⦉65</span></span><span class="code even" style="--layer: 19" title="bb68: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
+    44:12-44:60: Goto: goto -&gt; bb65"><span class="annotation">⦉62</span></span><span class="code even" style="--layer: 10" title="bb65: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
     44:59-44:60: StorageDead: StorageDead(_56)
     44:59-44:60: StorageDead: StorageDead(_51)
     44:12-44:60: FakeRead: FakeRead(ForMatchedPlace, _50)
-    44:9-46:10: SwitchInt: switchInt(_50) -&gt; [false: bb74, otherwise: bb73]"><span class="annotation">⦉68</span></span><span class="code even" style="--layer: 18" title="bb67: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
+    44:9-46:10: SwitchInt: switchInt(_50) -&gt; [false: bb71, otherwise: bb70]"><span class="annotation">⦉65</span></span><span class="code even" style="--layer: 9" title="bb64: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
     44:46-44:60: StorageLive: StorageLive(_56)
     44:46-44:55: StorageLive: StorageLive(_57)
     44:46-44:55: Assign: _57 = _41
     44:46-44:60: Assign: _56 = Ne(move _57, const 9_i32)
     44:59-44:60: StorageDead: StorageDead(_57)
-    44:12-44:60: SwitchInt: switchInt(move _56) -&gt; [false: bb66, otherwise: bb65]"><span class="annotation">⦉67</span></span><span class="code even" style="--layer: 17" title="bb73: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
-    44:9-46:10: FalseEdge: falseEdge -&gt; [real: bb75, imaginary: bb74]"> {</span></span>
-<span class="line"><span class="code even" style="--layer: 17" title="bb73: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
-    44:9-46:10: FalseEdge: falseEdge -&gt; [real: bb75, imaginary: bb74]">            countdown = 0;</span></span>
-<span class="line"><span class="code even" style="--layer: 17" title="bb73: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
-    44:9-46:10: FalseEdge: falseEdge -&gt; [real: bb75, imaginary: bb74]">        </span><span class="code odd" style="--layer: 18" title="bb76: ../instrument-coverage/coverage_of_if_else.rs:46:9: 47:23:
+    44:12-44:60: SwitchInt: switchInt(move _56) -&gt; [false: bb63, otherwise: bb62]"><span class="annotation">⦉64</span></span><span class="code even" style="--layer: 8" title="bb63: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
+    44:12-44:60: Assign: _50 = const false
+    44:12-44:60: Goto: goto -&gt; bb65"><span class="annotation">⦉63</span></span><span class="code even" style="--layer: 7" title="bb70: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
+    44:9-46:10: FalseEdge: falseEdge -&gt; [real: bb72, imaginary: bb71]"> {</span></span>
+<span class="line"><span class="code even" style="--layer: 7" title="bb70: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
+    44:9-46:10: FalseEdge: falseEdge -&gt; [real: bb72, imaginary: bb71]">            countdown = 0;</span></span>
+<span class="line"><span class="code even" style="--layer: 7" title="bb70: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
+    44:9-46:10: FalseEdge: falseEdge -&gt; [real: bb72, imaginary: bb71]">        </span><span class="code odd" style="--layer: 8" title="bb73: ../instrument-coverage/coverage_of_if_else.rs:46:9: 47:23:
     46:9-46:10: StorageDead: StorageDead(_50)
     46:9-46:10: StorageDead: StorageDead(_49)
     47:9-47:23: Assign: _58 = CheckedSub(_41, const 5_i32)
-    47:9-47:23: Assert: assert(!move (_58.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _41, const 5_i32) -&gt; [success: bb77, unwind: bb1]"><span class="annotation">76⦊</span>}</span><span class="code odd" style="--layer: 15" title="bb75: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
+    47:9-47:23: Assert: assert(!move (_58.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _41, const 5_i32) -&gt; [success: bb74, unwind: bb78]"><span class="annotation">73⦊</span>}</span><span class="code odd" style="--layer: 5" title="bb71: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
+    44:9-46:10: Assign: _49 = const ()
+    44:9-46:10: Goto: goto -&gt; bb73"><span class="annotation">⦉71</span></span><span class="code even" style="--layer: 6" title="bb72: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
     45:13-45:26: Assign: _41 = const 0_i32
     44:61-46:10: Assign: _49 = const ()
-    44:9-46:10: Goto: goto -&gt; bb76"><span class="annotation">⦉75</span></span><span class="code even" style="--layer: 16" title="bb74: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
-    44:9-46:10: Assign: _49 = const ()
-    44:9-46:10: Goto: goto -&gt; bb76"><span class="annotation">⦉74</span></span><span class="code even" style="--layer: 17" title="bb73: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
-    44:9-46:10: FalseEdge: falseEdge -&gt; [real: bb75, imaginary: bb74]"><span class="annotation">⦉73</span></span><span class="code even" style="--layer: 17" title="bb73: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
-    44:9-46:10: FalseEdge: falseEdge -&gt; [real: bb75, imaginary: bb74]"><span class="annotation">⦉73</span></span><span class="code odd" style="--layer: 18" title="bb76: ../instrument-coverage/coverage_of_if_else.rs:46:9: 47:23:
+    44:9-46:10: Goto: goto -&gt; bb73"><span class="annotation">⦉72</span></span><span class="code even" style="--layer: 7" title="bb70: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
+    44:9-46:10: FalseEdge: falseEdge -&gt; [real: bb72, imaginary: bb71]"><span class="annotation">⦉70</span></span><span class="code even" style="--layer: 7" title="bb70: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
+    44:9-46:10: FalseEdge: falseEdge -&gt; [real: bb72, imaginary: bb71]"><span class="annotation">⦉70</span></span><span class="code odd" style="--layer: 8" title="bb73: ../instrument-coverage/coverage_of_if_else.rs:46:9: 47:23:
     46:9-46:10: StorageDead: StorageDead(_50)
     46:9-46:10: StorageDead: StorageDead(_49)
     47:9-47:23: Assign: _58 = CheckedSub(_41, const 5_i32)
-    47:9-47:23: Assert: assert(!move (_58.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _41, const 5_i32) -&gt; [success: bb77, unwind: bb1]"></span></span>
-<span class="line"><span class="code odd" style="--layer: 18" title="bb76: ../instrument-coverage/coverage_of_if_else.rs:46:9: 47:23:
+    47:9-47:23: Assert: assert(!move (_58.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _41, const 5_i32) -&gt; [success: bb74, unwind: bb78]"></span></span>
+<span class="line"><span class="code odd" style="--layer: 8" title="bb73: ../instrument-coverage/coverage_of_if_else.rs:46:9: 47:23:
     46:9-46:10: StorageDead: StorageDead(_50)
     46:9-46:10: StorageDead: StorageDead(_49)
     47:9-47:23: Assign: _58 = CheckedSub(_41, const 5_i32)
-    47:9-47:23: Assert: assert(!move (_58.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _41, const 5_i32) -&gt; [success: bb77, unwind: bb1]">        countdown -= 5<span class="annotation">⦉76</span></span><span class="code even" style="--layer: 14" title="bb62: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
-    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb64, imaginary: bb63]">;</span></span>
-<span class="line"><span class="code even" style="--layer: 14" title="bb62: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
-    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb64, imaginary: bb63]">    } else {</span></span>
-<span class="line"><span class="code even" style="--layer: 14" title="bb62: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
-    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb64, imaginary: bb63]">        </span><span class="code even" style="--layer: 15" title="bb63: ../instrument-coverage/coverage_of_if_else.rs:49:9: 51:2:
-    49:9-49:15: Assign: _0 = const ()
-    50:5-50:6: StorageDead: StorageDead(_47)
-    51:1-51:2: StorageDead: StorageDead(_41)
-    51:1-51:2: StorageDead: StorageDead(_21)
-    51:1-51:2: StorageDead: StorageDead(_1)
-    51:1-51:2: StorageDead: StorageDead(_44)
-    49:9-49:15: Goto: goto -&gt; bb26"><span class="annotation">63⦊</span>return;</span></span>
-<span class="line"><span class="code even" style="--layer: 15" title="bb63: ../instrument-coverage/coverage_of_if_else.rs:49:9: 51:2:
-    49:9-49:15: Assign: _0 = const ()
-    50:5-50:6: StorageDead: StorageDead(_47)
-    51:1-51:2: StorageDead: StorageDead(_41)
-    51:1-51:2: StorageDead: StorageDead(_21)
-    51:1-51:2: StorageDead: StorageDead(_1)
-    51:1-51:2: StorageDead: StorageDead(_44)
-    49:9-49:15: Goto: goto -&gt; bb26">    }</span><span class="code odd" style="--layer: 11" title="bb61: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
+    47:9-47:23: Assert: assert(!move (_58.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _41, const 5_i32) -&gt; [success: bb74, unwind: bb78]">        countdown -= 5<span class="annotation">⦉73</span></span><span class="code even" style="--layer: 4" title="bb59: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
+    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb61, imaginary: bb60]">;</span></span>
+<span class="line"><span class="code even" style="--layer: 4" title="bb59: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
+    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb61, imaginary: bb60]">    } else {</span></span>
+<span class="line"><span class="code even" style="--layer: 4" title="bb59: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
+    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb61, imaginary: bb60]">        return;</span></span>
+<span class="line"><span class="code even" style="--layer: 4" title="bb59: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
+    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb61, imaginary: bb60]">    }<span class="annotation">⦉59</span></span><span class="code even" style="--layer: 3" title="bb58: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
     42:9-42:23: Assign: _41 = move (_46.0: i32)
     41:22-43:6: Assign: _0 = const ()
-    41:5-50:6: Goto: goto -&gt; bb78"><span class="annotation">⦉61</span></span><span class="code even" style="--layer: 12" title="bb58: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
-    41:5-50:6: FalseEdge: falseEdge -&gt; [real: bb60, imaginary: bb59]"><span class="annotation">⦉58</span></span><span class="code even" style="--layer: 13" title="bb77: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
-    47:9-47:23: Assign: _41 = move (_58.0: i32)
-    43:29-48:6: Assign: _0 = const ()
-    50:5-50:6: StorageDead: StorageDead(_47)
-    41:5-50:6: Goto: goto -&gt; bb78"><span class="annotation">⦉77</span></span><span class="code even" style="--layer: 13" title="bb77: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
+    41:5-50:6: Goto: goto -&gt; bb75"><span class="annotation">⦉58</span></span><span class="code even" style="--layer: 2" title="bb55: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
+    41:5-50:6: FalseEdge: falseEdge -&gt; [real: bb57, imaginary: bb56]"><span class="annotation">⦉55</span></span><span><span class="code odd" style="--layer: 1" title="bb74: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
     47:9-47:23: Assign: _41 = move (_58.0: i32)
     43:29-48:6: Assign: _0 = const ()
     50:5-50:6: StorageDead: StorageDead(_47)
-    41:5-50:6: Goto: goto -&gt; bb78"><span class="annotation">⦉77</span></span><span class="code even" style="--layer: 13" title="bb77: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
-    47:9-47:23: Assign: _41 = move (_58.0: i32)
-    43:29-48:6: Assign: _0 = const ()
-    50:5-50:6: StorageDead: StorageDead(_47)
-    41:5-50:6: Goto: goto -&gt; bb78"><span class="annotation">⦉77</span></span><span class="code even" style="--layer: 14" title="bb62: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
-    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb64, imaginary: bb63]"><span class="annotation">⦉62</span></span><span class="code even" style="--layer: 14" title="bb62: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
-    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb64, imaginary: bb63]"><span class="annotation">⦉62</span></span><span class="code even" style="--layer: 14" title="bb62: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
-    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb64, imaginary: bb63]"><span class="annotation">⦉62</span></span><span class="code even" style="--layer: 15" title="bb63: ../instrument-coverage/coverage_of_if_else.rs:49:9: 51:2:
-    49:9-49:15: Assign: _0 = const ()
-    50:5-50:6: StorageDead: StorageDead(_47)
-    51:1-51:2: StorageDead: StorageDead(_41)
-    51:1-51:2: StorageDead: StorageDead(_21)
-    51:1-51:2: StorageDead: StorageDead(_1)
-    51:1-51:2: StorageDead: StorageDead(_44)
-    49:9-49:15: Goto: goto -&gt; bb26"></span></span>
-<span class="line"><span class="code even" style="--layer: 16" title="bb78: ../instrument-coverage/coverage_of_if_else.rs:51:1: 51:2:
-    51:1-51:2: StorageDead: StorageDead(_41)
-    51:1-51:2: StorageDead: StorageDead(_21)
-    51:1-51:2: StorageDead: StorageDead(_1)
-    51:1-51:2: StorageDead: StorageDead(_44)
-    51:2-51:2: Goto: goto -&gt; bb26"><span class="annotation">78⦊</span>}<span class="annotation">⦉78</span></span><span class="code even" style="--layer: 15" title="bb63: ../instrument-coverage/coverage_of_if_else.rs:49:9: 51:2:
-    49:9-49:15: Assign: _0 = const ()
-    50:5-50:6: StorageDead: StorageDead(_47)
+    41:5-50:6: Goto: goto -&gt; bb75"><span class="annotation">⦉74</span></span></span><span class="code" style="--layer: 0"></span></span>
+<span class="line"><span><span class="code even" style="--layer: 1" title="bb75: ../instrument-coverage/coverage_of_if_else.rs:51:1: 51:2:
     51:1-51:2: StorageDead: StorageDead(_41)
     51:1-51:2: StorageDead: StorageDead(_21)
     51:1-51:2: StorageDead: StorageDead(_1)
     51:1-51:2: StorageDead: StorageDead(_44)
-    49:9-49:15: Goto: goto -&gt; bb26"><span class="annotation">⦉63</span></span><span class="code even" style="--layer: 10" title="bb38: ../instrument-coverage/coverage_of_if_else.rs:33:9: 51:2:
-    33:9-33:15: Assign: _0 = const ()
-    34:5-34:6: StorageDead: StorageDead(_28)
-    34:5-34:6: StorageDead: StorageDead(_25)
-    34:5-34:6: StorageDead: StorageDead(_24)
-    51:1-51:2: StorageDead: StorageDead(_21)
-    33:9-33:15: Goto: goto -&gt; bb27"><span class="annotation">⦉38</span></span><span class="code even" style="--layer: 5" title="bb27: ../instrument-coverage/coverage_of_if_else.rs:17:9: 51:2:
-    51:1-51:2: StorageDead: StorageDead(_1)
-    17:9-17:15: Goto: goto -&gt; bb26"><span class="annotation">⦉27</span></span><span><span class="code even" style="--layer: 1" title="bb26: ../instrument-coverage/coverage_of_if_else.rs:51:2: 51:2:
-    51:2-51:2: Return: return"><span class="annotation">26⦊</span>‸<span class="annotation">⦉26</span></span></span></span></div>
+    51:2-51:2: Goto: goto -&gt; bb77"><span class="annotation">75⦊</span>}<span class="annotation">⦉75</span></span></span><span><span class="code odd" style="--layer: 1" title="bb77: ../instrument-coverage/coverage_of_if_else.rs:51:2: 51:2:
+    51:2-51:2: Return: return"><span class="annotation">77⦊</span>‸<span class="annotation">⦉77</span></span></span></span></div>
 </body>
 </html>
diff --git a/src/test/run-make-fulldeps/instrument-coverage-mir-cov-html-link-dead-code/expected_mir_dump.coverage_of_if_else/coverage_of_if_else.main.-------.InstrumentCoverage.0.html b/src/test/run-make-fulldeps/instrument-coverage-mir-cov-html-link-dead-code/expected_mir_dump.coverage_of_if_else/coverage_of_if_else.main.-------.InstrumentCoverage.0.html
index 94abe11896cba..fcb6afb263684 100644
--- a/src/test/run-make-fulldeps/instrument-coverage-mir-cov-html-link-dead-code/expected_mir_dump.coverage_of_if_else/coverage_of_if_else.main.-------.InstrumentCoverage.0.html
+++ b/src/test/run-make-fulldeps/instrument-coverage-mir-cov-html-link-dead-code/expected_mir_dump.coverage_of_if_else/coverage_of_if_else.main.-------.InstrumentCoverage.0.html
@@ -61,13 +61,13 @@
 <body>
 <div class="code" style="counter-reset: line 2"><span class="line"><span class="code" style="--layer: 0">fn main() {</span></span>
 <span class="line"><span class="code" style="--layer: 0">    let mut countdown = 0;</span></span>
-<span class="line"><span class="code" style="--layer: 0">    </span><span><span class="code even" style="--layer: 1" title="bb2: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
-    5:5-7:6: FalseEdge: falseEdge -&gt; [real: bb4, imaginary: bb3]"><span class="annotation">2⦊</span></span></span><span class="code even" style="--layer: 2" title="bb4: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
+<span class="line"><span class="code" style="--layer: 0">    </span><span><span class="code even" style="--layer: 1" title="bb1: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
+    5:5-7:6: FalseEdge: falseEdge -&gt; [real: bb3, imaginary: bb2]"><span class="annotation">1⦊</span></span></span><span class="code even" style="--layer: 2" title="bb3: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
     6:9-6:23: Assign: _1 = const 10_i32
     5:13-7:6: Assign: _2 = const ()
-    5:5-7:6: Goto: goto -&gt; bb5"><span class="annotation">4⦊</span></span><span class="code even" style="--layer: 3" title="bb3: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
+    5:5-7:6: Goto: goto -&gt; bb4"><span class="annotation">3⦊</span></span><span class="code even" style="--layer: 3" title="bb2: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
     5:5-7:6: Assign: _2 = const ()
-    5:5-7:6: Goto: goto -&gt; bb5"><span class="annotation">3⦊</span>if </span><span class="code even" style="--layer: 4" title="bb0: ../instrument-coverage/coverage_of_if_else.rs:5:8: 5:12:
+    5:5-7:6: Goto: goto -&gt; bb4"><span class="annotation">2⦊</span>if </span><span class="code even" style="--layer: 4" title="bb0: ../instrument-coverage/coverage_of_if_else.rs:5:8: 5:12:
     4:9-4:22: StorageLive: StorageLive(_1)
     4:25-4:26: Assign: _1 = const 0_i32
     4:9-4:22: FakeRead: FakeRead(ForLet, _1)
@@ -75,29 +75,29 @@
     5:8-5:12: StorageLive: StorageLive(_3)
     5:8-5:12: Assign: _3 = const true
     5:8-5:12: FakeRead: FakeRead(ForMatchedPlace, _3)
-    5:5-7:6: SwitchInt: switchInt(_3) -&gt; [false: bb3, otherwise: bb2]"><span class="annotation">0⦊</span>true<span class="annotation">⦉0</span></span><span class="code even" style="--layer: 3" title="bb3: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
+    5:5-7:6: SwitchInt: switchInt(_3) -&gt; [false: bb2, otherwise: bb1]"><span class="annotation">0⦊</span>true<span class="annotation">⦉0</span></span><span class="code even" style="--layer: 3" title="bb2: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
     5:5-7:6: Assign: _2 = const ()
-    5:5-7:6: Goto: goto -&gt; bb5"> {</span></span>
-<span class="line"><span class="code even" style="--layer: 3" title="bb3: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
+    5:5-7:6: Goto: goto -&gt; bb4"> {</span></span>
+<span class="line"><span class="code even" style="--layer: 3" title="bb2: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
     5:5-7:6: Assign: _2 = const ()
-    5:5-7:6: Goto: goto -&gt; bb5">        countdown = 10;</span></span>
-<span class="line"><span class="code even" style="--layer: 3" title="bb3: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
+    5:5-7:6: Goto: goto -&gt; bb4">        countdown = 10;</span></span>
+<span class="line"><span class="code even" style="--layer: 3" title="bb2: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
     5:5-7:6: Assign: _2 = const ()
-    5:5-7:6: Goto: goto -&gt; bb5">    }<span class="annotation">⦉3</span></span><span class="code even" style="--layer: 2" title="bb4: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
+    5:5-7:6: Goto: goto -&gt; bb4">    }<span class="annotation">⦉2</span></span><span class="code even" style="--layer: 2" title="bb3: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
     6:9-6:23: Assign: _1 = const 10_i32
     5:13-7:6: Assign: _2 = const ()
-    5:5-7:6: Goto: goto -&gt; bb5"><span class="annotation">⦉4</span></span><span><span class="code even" style="--layer: 1" title="bb2: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
-    5:5-7:6: FalseEdge: falseEdge -&gt; [real: bb4, imaginary: bb3]"><span class="annotation">⦉2</span></span></span><span class="code" style="--layer: 0"></span></span>
+    5:5-7:6: Goto: goto -&gt; bb4"><span class="annotation">⦉3</span></span><span><span class="code even" style="--layer: 1" title="bb1: ../instrument-coverage/coverage_of_if_else.rs:5:5: 7:6:
+    5:5-7:6: FalseEdge: falseEdge -&gt; [real: bb3, imaginary: bb2]"><span class="annotation">⦉1</span></span></span><span class="code" style="--layer: 0"></span></span>
 <span class="line"><span class="code" style="--layer: 0"></span></span>
-<span class="line"><span class="code" style="--layer: 0">    </span><span><span class="code odd" style="--layer: 1" title="bb6: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
-    9:5-18:6: FalseEdge: falseEdge -&gt; [real: bb8, imaginary: bb7]"><span class="annotation">6⦊</span></span></span><span class="code even" style="--layer: 2" title="bb9: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
+<span class="line"><span class="code" style="--layer: 0">    </span><span><span class="code odd" style="--layer: 1" title="bb5: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
+    9:5-18:6: FalseEdge: falseEdge -&gt; [real: bb7, imaginary: bb6]"><span class="annotation">5⦊</span></span></span><span class="code even" style="--layer: 2" title="bb8: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
     10:9-10:23: Assign: _1 = move (_7.0: i32)
     9:22-11:6: Assign: _4 = const ()
-    9:5-18:6: Goto: goto -&gt; bb28"><span class="annotation">9⦊</span></span><span class="code even" style="--layer: 3" title="bb25: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
+    9:5-18:6: Goto: goto -&gt; bb25"><span class="annotation">8⦊</span></span><span class="code even" style="--layer: 3" title="bb24: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
     15:9-15:23: Assign: _1 = move (_19.0: i32)
     11:29-16:6: Assign: _4 = const ()
     18:5-18:6: StorageDead: StorageDead(_8)
-    9:5-18:6: Goto: goto -&gt; bb28"><span class="annotation">25⦊</span>if </span><span class="code even" style="--layer: 4" title="bb5: ../instrument-coverage/coverage_of_if_else.rs:9:8: 9:21:
+    9:5-18:6: Goto: goto -&gt; bb25"><span class="annotation">24⦊</span>if </span><span class="code even" style="--layer: 4" title="bb4: ../instrument-coverage/coverage_of_if_else.rs:9:8: 9:21:
     7:5-7:6: StorageDead: StorageDead(_3)
     7:5-7:6: StorageDead: StorageDead(_2)
     9:5-18:6: StorageLive: StorageLive(_4)
@@ -107,61 +107,50 @@
     9:8-9:21: Assign: _5 = Gt(move _6, const 7_i32)
     9:20-9:21: StorageDead: StorageDead(_6)
     9:8-9:21: FakeRead: FakeRead(ForMatchedPlace, _5)
-    9:5-18:6: SwitchInt: switchInt(_5) -&gt; [false: bb7, otherwise: bb6]"><span class="annotation">5⦊</span>countdown &gt; 7<span class="annotation">⦉5</span></span><span class="code even" style="--layer: 3" title="bb25: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
+    9:5-18:6: SwitchInt: switchInt(_5) -&gt; [false: bb6, otherwise: bb5]"><span class="annotation">4⦊</span>countdown &gt; 7<span class="annotation">⦉4</span></span><span class="code even" style="--layer: 3" title="bb24: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
     15:9-15:23: Assign: _1 = move (_19.0: i32)
     11:29-16:6: Assign: _4 = const ()
     18:5-18:6: StorageDead: StorageDead(_8)
-    9:5-18:6: Goto: goto -&gt; bb28"> {</span></span>
-<span class="line"><span class="code even" style="--layer: 3" title="bb25: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
+    9:5-18:6: Goto: goto -&gt; bb25"> {</span></span>
+<span class="line"><span class="code even" style="--layer: 3" title="bb24: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
     15:9-15:23: Assign: _1 = move (_19.0: i32)
     11:29-16:6: Assign: _4 = const ()
     18:5-18:6: StorageDead: StorageDead(_8)
-    9:5-18:6: Goto: goto -&gt; bb28">        </span><span class="code odd" style="--layer: 4" title="bb8: ../instrument-coverage/coverage_of_if_else.rs:10:9: 10:23:
+    9:5-18:6: Goto: goto -&gt; bb25">        </span><span class="code odd" style="--layer: 4" title="bb7: ../instrument-coverage/coverage_of_if_else.rs:10:9: 10:23:
     10:9-10:23: Assign: _7 = CheckedSub(_1, const 4_i32)
-    10:9-10:23: Assert: assert(!move (_7.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _1, const 4_i32) -&gt; [success: bb9, unwind: bb1]"><span class="annotation">8⦊</span>countdown -= 4<span class="annotation">⦉8</span></span><span class="code even" style="--layer: 3" title="bb25: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
+    10:9-10:23: Assert: assert(!move (_7.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _1, const 4_i32) -&gt; [success: bb8, unwind: bb78]"><span class="annotation">7⦊</span>countdown -= 4<span class="annotation">⦉7</span></span><span class="code even" style="--layer: 3" title="bb24: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
     15:9-15:23: Assign: _1 = move (_19.0: i32)
     11:29-16:6: Assign: _4 = const ()
     18:5-18:6: StorageDead: StorageDead(_8)
-    9:5-18:6: Goto: goto -&gt; bb28">;</span></span>
-<span class="line"><span class="code even" style="--layer: 3" title="bb25: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
+    9:5-18:6: Goto: goto -&gt; bb25">;</span></span>
+<span class="line"><span class="code even" style="--layer: 3" title="bb24: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
     15:9-15:23: Assign: _1 = move (_19.0: i32)
     11:29-16:6: Assign: _4 = const ()
     18:5-18:6: StorageDead: StorageDead(_8)
-    9:5-18:6: Goto: goto -&gt; bb28">    } else </span><span class="code even" style="--layer: 4" title="bb10: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
-    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb12, imaginary: bb11]"><span class="annotation">10⦊</span>if </span><span class="code even" style="--layer: 5" title="bb7: ../instrument-coverage/coverage_of_if_else.rs:11:15: 11:28:
+    9:5-18:6: Goto: goto -&gt; bb25">    } else </span><span class="code even" style="--layer: 4" title="bb9: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
+    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb11, imaginary: bb10]"><span class="annotation">9⦊</span>if </span><span class="code even" style="--layer: 5" title="bb6: ../instrument-coverage/coverage_of_if_else.rs:11:15: 11:28:
     11:15-11:28: StorageLive: StorageLive(_8)
     11:15-11:24: StorageLive: StorageLive(_9)
     11:15-11:24: Assign: _9 = _1
     11:15-11:28: Assign: _8 = Gt(move _9, const 2_i32)
     11:27-11:28: StorageDead: StorageDead(_9)
     11:15-11:28: FakeRead: FakeRead(ForMatchedPlace, _8)
-    11:12-18:6: SwitchInt: switchInt(_8) -&gt; [false: bb11, otherwise: bb10]"><span class="annotation">7⦊</span>countdown &gt; 2<span class="annotation">⦉7</span></span><span class="code even" style="--layer: 4" title="bb10: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
-    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb12, imaginary: bb11]"> {</span></span>
-<span class="line"><span class="code even" style="--layer: 4" title="bb10: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
-    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb12, imaginary: bb11]">        </span><span class="code odd" style="--layer: 5" title="bb22: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
-    12:9-14:10: Assign: _10 = const ()
-    12:9-14:10: Goto: goto -&gt; bb24"><span class="annotation">22⦊</span></span><span class="code even" style="--layer: 6" title="bb23: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
+    11:12-18:6: SwitchInt: switchInt(_8) -&gt; [false: bb10, otherwise: bb9]"><span class="annotation">6⦊</span>countdown &gt; 2<span class="annotation">⦉6</span></span><span class="code even" style="--layer: 4" title="bb9: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
+    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb11, imaginary: bb10]"> {</span></span>
+<span class="line"><span class="code even" style="--layer: 4" title="bb9: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
+    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb11, imaginary: bb10]">        </span><span class="code odd" style="--layer: 5" title="bb20: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
+    12:9-14:10: FalseEdge: falseEdge -&gt; [real: bb22, imaginary: bb21]"><span class="annotation">20⦊</span></span><span class="code even" style="--layer: 6" title="bb22: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
     13:13-13:26: Assign: _1 = const 0_i32
     12:61-14:10: Assign: _10 = const ()
-    12:9-14:10: Goto: goto -&gt; bb24"><span class="annotation">23⦊</span></span><span class="code even" style="--layer: 7" title="bb21: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
-    12:9-14:10: FalseEdge: falseEdge -&gt; [real: bb23, imaginary: bb22]"><span class="annotation">21⦊</span>if </span><span class="code even" style="--layer: 8" title="bb14: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
-    12:12-12:60: Assign: _11 = const false
-    12:12-12:60: Goto: goto -&gt; bb16"><span class="annotation">14⦊</span></span><span class="code even" style="--layer: 9" title="bb15: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
+    12:9-14:10: Goto: goto -&gt; bb23"><span class="annotation">22⦊</span></span><span class="code even" style="--layer: 7" title="bb21: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
+    12:9-14:10: Assign: _10 = const ()
+    12:9-14:10: Goto: goto -&gt; bb23"><span class="annotation">21⦊</span>if </span><span class="code even" style="--layer: 8" title="bb14: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
     12:46-12:60: StorageLive: StorageLive(_17)
     12:46-12:55: StorageLive: StorageLive(_18)
     12:46-12:55: Assign: _18 = _1
     12:46-12:60: Assign: _17 = Ne(move _18, const 9_i32)
     12:59-12:60: StorageDead: StorageDead(_18)
-    12:12-12:60: SwitchInt: switchInt(move _17) -&gt; [false: bb14, otherwise: bb13]"><span class="annotation">15⦊</span></span><span class="code even" style="--layer: 10" title="bb16: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
-    12:59-12:60: StorageDead: StorageDead(_17)
-    12:59-12:60: StorageDead: StorageDead(_12)
-    12:12-12:60: FakeRead: FakeRead(ForMatchedPlace, _11)
-    12:9-14:10: SwitchInt: switchInt(_11) -&gt; [false: bb22, otherwise: bb21]"><span class="annotation">16⦊</span></span><span class="code even" style="--layer: 11" title="bb13: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
-    12:12-12:60: Assign: _11 = const true
-    12:12-12:60: Goto: goto -&gt; bb16"><span class="annotation">13⦊</span></span><span class="code even" style="--layer: 12" title="bb20: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
-    12:41-12:42: StorageDead: StorageDead(_15)
-    12:41-12:42: StorageDead: StorageDead(_13)
-    12:12-12:60: SwitchInt: switchInt(move _12) -&gt; [false: bb15, otherwise: bb13]"><span class="annotation">20⦊</span></span><span class="code even" style="--layer: 13" title="bb12: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
+    12:12-12:60: SwitchInt: switchInt(move _17) -&gt; [false: bb13, otherwise: bb12]"><span class="annotation">14⦊</span></span><span class="code even" style="--layer: 9" title="bb11: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
     12:9-14:10: StorageLive: StorageLive(_10)
     12:12-12:60: StorageLive: StorageLive(_11)
     12:12-12:42: StorageLive: StorageLive(_12)
@@ -170,25 +159,43 @@
     12:12-12:21: Assign: _14 = _1
     12:12-12:25: Assign: _13 = Lt(move _14, const 1_i32)
     12:24-12:25: StorageDead: StorageDead(_14)
-    12:12-12:42: SwitchInt: switchInt(move _13) -&gt; [false: bb19, otherwise: bb17]"><span class="annotation">12⦊</span></span><span class="code even" style="--layer: 14" title="bb18: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:42:
-    12:12-12:42: Assign: _12 = const false
-    12:12-12:42: Goto: goto -&gt; bb20"><span class="annotation">18⦊</span></span><span class="code even" style="--layer: 15" title="bb19: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:42:
-    12:29-12:42: StorageLive: StorageLive(_15)
-    12:29-12:38: StorageLive: StorageLive(_16)
-    12:29-12:38: Assign: _16 = _1
-    12:29-12:42: Assign: _15 = Gt(move _16, const 5_i32)
-    12:41-12:42: StorageDead: StorageDead(_16)
-    12:12-12:42: SwitchInt: switchInt(move _15) -&gt; [false: bb18, otherwise: bb17]"><span class="annotation">19⦊</span></span><span class="code even" style="--layer: 16" title="bb17: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:42:
+    12:12-12:42: SwitchInt: switchInt(move _13) -&gt; [false: bb18, otherwise: bb16]"><span class="annotation">11⦊</span></span><span class="code even" style="--layer: 10" title="bb13: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
+    12:12-12:60: Assign: _11 = const false
+    12:12-12:60: Goto: goto -&gt; bb15"><span class="annotation">13⦊</span></span><span class="code even" style="--layer: 11" title="bb19: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
+    12:41-12:42: StorageDead: StorageDead(_15)
+    12:41-12:42: StorageDead: StorageDead(_13)
+    12:12-12:60: SwitchInt: switchInt(move _12) -&gt; [false: bb14, otherwise: bb12]"><span class="annotation">19⦊</span></span><span class="code even" style="--layer: 12" title="bb15: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
+    12:59-12:60: StorageDead: StorageDead(_17)
+    12:59-12:60: StorageDead: StorageDead(_12)
+    12:12-12:60: FakeRead: FakeRead(ForMatchedPlace, _11)
+    12:9-14:10: SwitchInt: switchInt(_11) -&gt; [false: bb21, otherwise: bb20]"><span class="annotation">15⦊</span></span><span class="code even" style="--layer: 13" title="bb12: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
+    12:12-12:60: Assign: _11 = const true
+    12:12-12:60: Goto: goto -&gt; bb15"><span class="annotation">12⦊</span></span><span class="code even" style="--layer: 14" title="bb16: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:42:
     12:12-12:42: Assign: _12 = const true
-    12:12-12:42: Goto: goto -&gt; bb20"><span class="annotation">17⦊</span>countdown &lt; 1 || countdown &gt; 5<span class="annotation">⦉17</span></span><span class="code even" style="--layer: 15" title="bb19: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:42:
+    12:12-12:42: Goto: goto -&gt; bb19"><span class="annotation">16⦊</span></span><span class="code even" style="--layer: 15" title="bb17: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:42:
+    12:12-12:42: Assign: _12 = const false
+    12:12-12:42: Goto: goto -&gt; bb19"><span class="annotation">17⦊</span></span><span class="code even" style="--layer: 16" title="bb18: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:42:
     12:29-12:42: StorageLive: StorageLive(_15)
     12:29-12:38: StorageLive: StorageLive(_16)
     12:29-12:38: Assign: _16 = _1
     12:29-12:42: Assign: _15 = Gt(move _16, const 5_i32)
     12:41-12:42: StorageDead: StorageDead(_16)
-    12:12-12:42: SwitchInt: switchInt(move _15) -&gt; [false: bb18, otherwise: bb17]"><span class="annotation">⦉19</span></span><span class="code even" style="--layer: 14" title="bb18: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:42:
+    12:12-12:42: SwitchInt: switchInt(move _15) -&gt; [false: bb17, otherwise: bb16]"><span class="annotation">18⦊</span>countdown &lt; 1 || countdown &gt; 5<span class="annotation">⦉18</span></span><span class="code even" style="--layer: 15" title="bb17: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:42:
     12:12-12:42: Assign: _12 = const false
-    12:12-12:42: Goto: goto -&gt; bb20"><span class="annotation">⦉18</span></span><span class="code even" style="--layer: 13" title="bb12: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
+    12:12-12:42: Goto: goto -&gt; bb19"><span class="annotation">⦉17</span></span><span class="code even" style="--layer: 14" title="bb16: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:42:
+    12:12-12:42: Assign: _12 = const true
+    12:12-12:42: Goto: goto -&gt; bb19"><span class="annotation">⦉16</span></span><span class="code even" style="--layer: 13" title="bb12: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
+    12:12-12:60: Assign: _11 = const true
+    12:12-12:60: Goto: goto -&gt; bb15"> || countdown != 9<span class="annotation">⦉12</span></span><span class="code even" style="--layer: 12" title="bb15: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
+    12:59-12:60: StorageDead: StorageDead(_17)
+    12:59-12:60: StorageDead: StorageDead(_12)
+    12:12-12:60: FakeRead: FakeRead(ForMatchedPlace, _11)
+    12:9-14:10: SwitchInt: switchInt(_11) -&gt; [false: bb21, otherwise: bb20]"><span class="annotation">⦉15</span></span><span class="code even" style="--layer: 11" title="bb19: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
+    12:41-12:42: StorageDead: StorageDead(_15)
+    12:41-12:42: StorageDead: StorageDead(_13)
+    12:12-12:60: SwitchInt: switchInt(move _12) -&gt; [false: bb14, otherwise: bb12]"><span class="annotation">⦉19</span></span><span class="code even" style="--layer: 10" title="bb13: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
+    12:12-12:60: Assign: _11 = const false
+    12:12-12:60: Goto: goto -&gt; bb15"><span class="annotation">⦉13</span></span><span class="code even" style="--layer: 9" title="bb11: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
     12:9-14:10: StorageLive: StorageLive(_10)
     12:12-12:60: StorageLive: StorageLive(_11)
     12:12-12:42: StorageLive: StorageLive(_12)
@@ -197,108 +204,66 @@
     12:12-12:21: Assign: _14 = _1
     12:12-12:25: Assign: _13 = Lt(move _14, const 1_i32)
     12:24-12:25: StorageDead: StorageDead(_14)
-    12:12-12:42: SwitchInt: switchInt(move _13) -&gt; [false: bb19, otherwise: bb17]"> || countdown != 9<span class="annotation">⦉12</span></span><span class="code even" style="--layer: 12" title="bb20: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
-    12:41-12:42: StorageDead: StorageDead(_15)
-    12:41-12:42: StorageDead: StorageDead(_13)
-    12:12-12:60: SwitchInt: switchInt(move _12) -&gt; [false: bb15, otherwise: bb13]"><span class="annotation">⦉20</span></span><span class="code even" style="--layer: 11" title="bb13: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
-    12:12-12:60: Assign: _11 = const true
-    12:12-12:60: Goto: goto -&gt; bb16"><span class="annotation">⦉13</span></span><span class="code even" style="--layer: 10" title="bb16: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
-    12:59-12:60: StorageDead: StorageDead(_17)
-    12:59-12:60: StorageDead: StorageDead(_12)
-    12:12-12:60: FakeRead: FakeRead(ForMatchedPlace, _11)
-    12:9-14:10: SwitchInt: switchInt(_11) -&gt; [false: bb22, otherwise: bb21]"><span class="annotation">⦉16</span></span><span class="code even" style="--layer: 9" title="bb15: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
+    12:12-12:42: SwitchInt: switchInt(move _13) -&gt; [false: bb18, otherwise: bb16]"><span class="annotation">⦉11</span></span><span class="code even" style="--layer: 8" title="bb14: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
     12:46-12:60: StorageLive: StorageLive(_17)
     12:46-12:55: StorageLive: StorageLive(_18)
     12:46-12:55: Assign: _18 = _1
     12:46-12:60: Assign: _17 = Ne(move _18, const 9_i32)
     12:59-12:60: StorageDead: StorageDead(_18)
-    12:12-12:60: SwitchInt: switchInt(move _17) -&gt; [false: bb14, otherwise: bb13]"><span class="annotation">⦉15</span></span><span class="code even" style="--layer: 8" title="bb14: ../instrument-coverage/coverage_of_if_else.rs:12:12: 12:60:
-    12:12-12:60: Assign: _11 = const false
-    12:12-12:60: Goto: goto -&gt; bb16"><span class="annotation">⦉14</span></span><span class="code even" style="--layer: 7" title="bb21: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
-    12:9-14:10: FalseEdge: falseEdge -&gt; [real: bb23, imaginary: bb22]"> {</span></span>
+    12:12-12:60: SwitchInt: switchInt(move _17) -&gt; [false: bb13, otherwise: bb12]"><span class="annotation">⦉14</span></span><span class="code even" style="--layer: 7" title="bb21: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
+    12:9-14:10: Assign: _10 = const ()
+    12:9-14:10: Goto: goto -&gt; bb23"> {</span></span>
 <span class="line"><span class="code even" style="--layer: 7" title="bb21: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
-    12:9-14:10: FalseEdge: falseEdge -&gt; [real: bb23, imaginary: bb22]">            countdown = 0;</span></span>
+    12:9-14:10: Assign: _10 = const ()
+    12:9-14:10: Goto: goto -&gt; bb23">            countdown = 0;</span></span>
 <span class="line"><span class="code even" style="--layer: 7" title="bb21: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
-    12:9-14:10: FalseEdge: falseEdge -&gt; [real: bb23, imaginary: bb22]">        </span><span class="code odd" style="--layer: 8" title="bb24: ../instrument-coverage/coverage_of_if_else.rs:14:9: 15:23:
+    12:9-14:10: Assign: _10 = const ()
+    12:9-14:10: Goto: goto -&gt; bb23">        </span><span class="code odd" style="--layer: 8" title="bb23: ../instrument-coverage/coverage_of_if_else.rs:14:9: 15:23:
     14:9-14:10: StorageDead: StorageDead(_11)
     14:9-14:10: StorageDead: StorageDead(_10)
     15:9-15:23: Assign: _19 = CheckedSub(_1, const 5_i32)
-    15:9-15:23: Assert: assert(!move (_19.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _1, const 5_i32) -&gt; [success: bb25, unwind: bb1]"><span class="annotation">24⦊</span>}</span><span class="code odd" style="--layer: 5" title="bb22: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
-    12:9-14:10: Assign: _10 = const ()
-    12:9-14:10: Goto: goto -&gt; bb24"><span class="annotation">⦉22</span></span><span class="code even" style="--layer: 6" title="bb23: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
+    15:9-15:23: Assert: assert(!move (_19.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _1, const 5_i32) -&gt; [success: bb24, unwind: bb78]"><span class="annotation">23⦊</span>}</span><span class="code odd" style="--layer: 5" title="bb20: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
+    12:9-14:10: FalseEdge: falseEdge -&gt; [real: bb22, imaginary: bb21]"><span class="annotation">⦉20</span></span><span class="code even" style="--layer: 6" title="bb22: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
     13:13-13:26: Assign: _1 = const 0_i32
     12:61-14:10: Assign: _10 = const ()
-    12:9-14:10: Goto: goto -&gt; bb24"><span class="annotation">⦉23</span></span><span class="code even" style="--layer: 7" title="bb21: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
-    12:9-14:10: FalseEdge: falseEdge -&gt; [real: bb23, imaginary: bb22]"><span class="annotation">⦉21</span></span><span class="code even" style="--layer: 7" title="bb21: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
-    12:9-14:10: FalseEdge: falseEdge -&gt; [real: bb23, imaginary: bb22]"><span class="annotation">⦉21</span></span><span class="code odd" style="--layer: 8" title="bb24: ../instrument-coverage/coverage_of_if_else.rs:14:9: 15:23:
+    12:9-14:10: Goto: goto -&gt; bb23"><span class="annotation">⦉22</span></span><span class="code even" style="--layer: 7" title="bb21: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
+    12:9-14:10: Assign: _10 = const ()
+    12:9-14:10: Goto: goto -&gt; bb23"><span class="annotation">⦉21</span></span><span class="code even" style="--layer: 7" title="bb21: ../instrument-coverage/coverage_of_if_else.rs:12:9: 14:10:
+    12:9-14:10: Assign: _10 = const ()
+    12:9-14:10: Goto: goto -&gt; bb23"><span class="annotation">⦉21</span></span><span class="code odd" style="--layer: 8" title="bb23: ../instrument-coverage/coverage_of_if_else.rs:14:9: 15:23:
     14:9-14:10: StorageDead: StorageDead(_11)
     14:9-14:10: StorageDead: StorageDead(_10)
     15:9-15:23: Assign: _19 = CheckedSub(_1, const 5_i32)
-    15:9-15:23: Assert: assert(!move (_19.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _1, const 5_i32) -&gt; [success: bb25, unwind: bb1]"></span></span>
-<span class="line"><span class="code odd" style="--layer: 8" title="bb24: ../instrument-coverage/coverage_of_if_else.rs:14:9: 15:23:
+    15:9-15:23: Assert: assert(!move (_19.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _1, const 5_i32) -&gt; [success: bb24, unwind: bb78]"></span></span>
+<span class="line"><span class="code odd" style="--layer: 8" title="bb23: ../instrument-coverage/coverage_of_if_else.rs:14:9: 15:23:
     14:9-14:10: StorageDead: StorageDead(_11)
     14:9-14:10: StorageDead: StorageDead(_10)
     15:9-15:23: Assign: _19 = CheckedSub(_1, const 5_i32)
-    15:9-15:23: Assert: assert(!move (_19.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _1, const 5_i32) -&gt; [success: bb25, unwind: bb1]">        countdown -= 5<span class="annotation">⦉24</span></span><span class="code even" style="--layer: 4" title="bb10: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
-    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb12, imaginary: bb11]">;</span></span>
-<span class="line"><span class="code even" style="--layer: 4" title="bb10: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
-    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb12, imaginary: bb11]">    } else {</span></span>
-<span class="line"><span class="code even" style="--layer: 4" title="bb10: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
-    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb12, imaginary: bb11]">        </span><span class="code even" style="--layer: 5" title="bb27: ../instrument-coverage/coverage_of_if_else.rs:17:9: 51:2:
-    51:1-51:2: StorageDead: StorageDead(_1)
-    17:9-17:15: Goto: goto -&gt; bb26"><span class="annotation">27⦊</span></span><span class="code even" style="--layer: 6" title="bb11: ../instrument-coverage/coverage_of_if_else.rs:17:9: 18:6:
-    17:9-17:15: Assign: _0 = const ()
-    18:5-18:6: StorageDead: StorageDead(_8)
-    18:5-18:6: StorageDead: StorageDead(_5)
-    18:5-18:6: StorageDead: StorageDead(_4)
-    17:9-17:15: Goto: goto -&gt; bb27"><span class="annotation">11⦊</span>return;</span></span>
-<span class="line"><span class="code even" style="--layer: 6" title="bb11: ../instrument-coverage/coverage_of_if_else.rs:17:9: 18:6:
-    17:9-17:15: Assign: _0 = const ()
-    18:5-18:6: StorageDead: StorageDead(_8)
-    18:5-18:6: StorageDead: StorageDead(_5)
-    18:5-18:6: StorageDead: StorageDead(_4)
-    17:9-17:15: Goto: goto -&gt; bb27">    }<span class="annotation">⦉11</span></span><span><span class="code odd" style="--layer: 1" title="bb6: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
-    9:5-18:6: FalseEdge: falseEdge -&gt; [real: bb8, imaginary: bb7]"><span class="annotation">⦉6</span></span></span><span class="code even" style="--layer: 2" title="bb9: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
-    10:9-10:23: Assign: _1 = move (_7.0: i32)
-    9:22-11:6: Assign: _4 = const ()
-    9:5-18:6: Goto: goto -&gt; bb28"><span class="annotation">⦉9</span></span><span class="code even" style="--layer: 3" title="bb25: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
-    15:9-15:23: Assign: _1 = move (_19.0: i32)
-    11:29-16:6: Assign: _4 = const ()
-    18:5-18:6: StorageDead: StorageDead(_8)
-    9:5-18:6: Goto: goto -&gt; bb28"><span class="annotation">⦉25</span></span><span class="code even" style="--layer: 3" title="bb25: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
-    15:9-15:23: Assign: _1 = move (_19.0: i32)
-    11:29-16:6: Assign: _4 = const ()
-    18:5-18:6: StorageDead: StorageDead(_8)
-    9:5-18:6: Goto: goto -&gt; bb28"><span class="annotation">⦉25</span></span><span class="code even" style="--layer: 3" title="bb25: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
+    15:9-15:23: Assert: assert(!move (_19.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _1, const 5_i32) -&gt; [success: bb24, unwind: bb78]">        countdown -= 5<span class="annotation">⦉23</span></span><span class="code even" style="--layer: 4" title="bb9: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
+    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb11, imaginary: bb10]">;</span></span>
+<span class="line"><span class="code even" style="--layer: 4" title="bb9: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
+    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb11, imaginary: bb10]">    } else {</span></span>
+<span class="line"><span class="code even" style="--layer: 4" title="bb9: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
+    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb11, imaginary: bb10]">        return;</span></span>
+<span class="line"><span class="code even" style="--layer: 4" title="bb9: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
+    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb11, imaginary: bb10]">    }<span class="annotation">⦉9</span></span><span class="code even" style="--layer: 3" title="bb24: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
     15:9-15:23: Assign: _1 = move (_19.0: i32)
     11:29-16:6: Assign: _4 = const ()
     18:5-18:6: StorageDead: StorageDead(_8)
-    9:5-18:6: Goto: goto -&gt; bb28"><span class="annotation">⦉25</span></span><span class="code even" style="--layer: 4" title="bb10: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
-    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb12, imaginary: bb11]"><span class="annotation">⦉10</span></span><span class="code even" style="--layer: 4" title="bb10: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
-    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb12, imaginary: bb11]"><span class="annotation">⦉10</span></span><span class="code even" style="--layer: 4" title="bb10: ../instrument-coverage/coverage_of_if_else.rs:11:12: 18:6:
-    11:12-18:6: FalseEdge: falseEdge -&gt; [real: bb12, imaginary: bb11]"><span class="annotation">⦉10</span></span><span class="code even" style="--layer: 6" title="bb11: ../instrument-coverage/coverage_of_if_else.rs:17:9: 18:6:
-    17:9-17:15: Assign: _0 = const ()
-    18:5-18:6: StorageDead: StorageDead(_8)
-    18:5-18:6: StorageDead: StorageDead(_5)
-    18:5-18:6: StorageDead: StorageDead(_4)
-    17:9-17:15: Goto: goto -&gt; bb27"><span class="annotation">⦉11</span></span><span class="code even" style="--layer: 5" title="bb27: ../instrument-coverage/coverage_of_if_else.rs:17:9: 51:2:
-    51:1-51:2: StorageDead: StorageDead(_1)
-    17:9-17:15: Goto: goto -&gt; bb26"></span></span>
-<span class="line"><span class="code even" style="--layer: 5" title="bb27: ../instrument-coverage/coverage_of_if_else.rs:17:9: 51:2:
-    51:1-51:2: StorageDead: StorageDead(_1)
-    17:9-17:15: Goto: goto -&gt; bb26"></span></span>
-<span class="line"><span class="code even" style="--layer: 5" title="bb27: ../instrument-coverage/coverage_of_if_else.rs:17:9: 51:2:
-    51:1-51:2: StorageDead: StorageDead(_1)
-    17:9-17:15: Goto: goto -&gt; bb26">    let mut countdown = 0;</span></span>
-<span class="line"><span class="code even" style="--layer: 5" title="bb27: ../instrument-coverage/coverage_of_if_else.rs:17:9: 51:2:
-    51:1-51:2: StorageDead: StorageDead(_1)
-    17:9-17:15: Goto: goto -&gt; bb26">    </span><span class="code odd" style="--layer: 6" title="bb30: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
+    9:5-18:6: Goto: goto -&gt; bb25"><span class="annotation">⦉24</span></span><span class="code even" style="--layer: 2" title="bb8: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
+    10:9-10:23: Assign: _1 = move (_7.0: i32)
+    9:22-11:6: Assign: _4 = const ()
+    9:5-18:6: Goto: goto -&gt; bb25"><span class="annotation">⦉8</span></span><span><span class="code odd" style="--layer: 1" title="bb5: ../instrument-coverage/coverage_of_if_else.rs:9:5: 18:6:
+    9:5-18:6: FalseEdge: falseEdge -&gt; [real: bb7, imaginary: bb6]"><span class="annotation">⦉5</span></span></span><span class="code" style="--layer: 0"></span></span>
+<span class="line"><span class="code" style="--layer: 0"></span></span>
+<span class="line"><span class="code" style="--layer: 0">    let mut countdown = 0;</span></span>
+<span class="line"><span class="code" style="--layer: 0">    </span><span><span class="code even" style="--layer: 1" title="bb27: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
     21:5-23:6: Assign: _22 = const ()
-    21:5-23:6: Goto: goto -&gt; bb32"><span class="annotation">30⦊</span></span><span class="code even" style="--layer: 7" title="bb31: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
+    21:5-23:6: Goto: goto -&gt; bb29"><span class="annotation">27⦊</span></span></span><span class="code even" style="--layer: 2" title="bb28: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
     22:9-22:23: Assign: _21 = const 10_i32
     21:13-23:6: Assign: _22 = const ()
-    21:5-23:6: Goto: goto -&gt; bb32"><span class="annotation">31⦊</span></span><span class="code even" style="--layer: 8" title="bb29: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
-    21:5-23:6: FalseEdge: falseEdge -&gt; [real: bb31, imaginary: bb30]"><span class="annotation">29⦊</span>if </span><span class="code even" style="--layer: 9" title="bb28: ../instrument-coverage/coverage_of_if_else.rs:21:8: 21:12:
+    21:5-23:6: Goto: goto -&gt; bb29"><span class="annotation">28⦊</span></span><span class="code even" style="--layer: 3" title="bb26: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
+    21:5-23:6: FalseEdge: falseEdge -&gt; [real: bb28, imaginary: bb27]"><span class="annotation">26⦊</span>if </span><span class="code even" style="--layer: 4" title="bb25: ../instrument-coverage/coverage_of_if_else.rs:21:8: 21:12:
     18:5-18:6: StorageDead: StorageDead(_5)
     18:5-18:6: StorageDead: StorageDead(_4)
     20:9-20:22: StorageLive: StorageLive(_21)
@@ -308,33 +273,27 @@
     21:8-21:12: StorageLive: StorageLive(_23)
     21:8-21:12: Assign: _23 = const true
     21:8-21:12: FakeRead: FakeRead(ForMatchedPlace, _23)
-    21:5-23:6: SwitchInt: switchInt(_23) -&gt; [false: bb30, otherwise: bb29]"><span class="annotation">28⦊</span>true<span class="annotation">⦉28</span></span><span class="code even" style="--layer: 8" title="bb29: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
-    21:5-23:6: FalseEdge: falseEdge -&gt; [real: bb31, imaginary: bb30]"> {</span></span>
-<span class="line"><span class="code even" style="--layer: 8" title="bb29: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
-    21:5-23:6: FalseEdge: falseEdge -&gt; [real: bb31, imaginary: bb30]">        countdown = 10;</span></span>
-<span class="line"><span class="code even" style="--layer: 8" title="bb29: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
-    21:5-23:6: FalseEdge: falseEdge -&gt; [real: bb31, imaginary: bb30]">    }<span class="annotation">⦉29</span></span><span class="code even" style="--layer: 7" title="bb31: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
+    21:5-23:6: SwitchInt: switchInt(_23) -&gt; [false: bb27, otherwise: bb26]"><span class="annotation">25⦊</span>true<span class="annotation">⦉25</span></span><span class="code even" style="--layer: 3" title="bb26: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
+    21:5-23:6: FalseEdge: falseEdge -&gt; [real: bb28, imaginary: bb27]"> {</span></span>
+<span class="line"><span class="code even" style="--layer: 3" title="bb26: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
+    21:5-23:6: FalseEdge: falseEdge -&gt; [real: bb28, imaginary: bb27]">        countdown = 10;</span></span>
+<span class="line"><span class="code even" style="--layer: 3" title="bb26: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
+    21:5-23:6: FalseEdge: falseEdge -&gt; [real: bb28, imaginary: bb27]">    }<span class="annotation">⦉26</span></span><span class="code even" style="--layer: 2" title="bb28: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
     22:9-22:23: Assign: _21 = const 10_i32
     21:13-23:6: Assign: _22 = const ()
-    21:5-23:6: Goto: goto -&gt; bb32"><span class="annotation">⦉31</span></span><span class="code odd" style="--layer: 6" title="bb30: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
+    21:5-23:6: Goto: goto -&gt; bb29"><span class="annotation">⦉28</span></span><span><span class="code even" style="--layer: 1" title="bb27: ../instrument-coverage/coverage_of_if_else.rs:21:5: 23:6:
     21:5-23:6: Assign: _22 = const ()
-    21:5-23:6: Goto: goto -&gt; bb32"><span class="annotation">⦉30</span></span><span class="code even" style="--layer: 5" title="bb27: ../instrument-coverage/coverage_of_if_else.rs:17:9: 51:2:
-    51:1-51:2: StorageDead: StorageDead(_1)
-    17:9-17:15: Goto: goto -&gt; bb26"></span></span>
-<span class="line"><span class="code even" style="--layer: 5" title="bb27: ../instrument-coverage/coverage_of_if_else.rs:17:9: 51:2:
-    51:1-51:2: StorageDead: StorageDead(_1)
-    17:9-17:15: Goto: goto -&gt; bb26"></span></span>
-<span class="line"><span class="code even" style="--layer: 5" title="bb27: ../instrument-coverage/coverage_of_if_else.rs:17:9: 51:2:
-    51:1-51:2: StorageDead: StorageDead(_1)
-    17:9-17:15: Goto: goto -&gt; bb26">    </span><span class="code even" style="--layer: 6" title="bb33: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
-    25:5-34:6: FalseEdge: falseEdge -&gt; [real: bb35, imaginary: bb34]"><span class="annotation">33⦊</span></span><span class="code even" style="--layer: 7" title="bb52: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
+    21:5-23:6: Goto: goto -&gt; bb29"><span class="annotation">⦉27</span></span></span><span class="code" style="--layer: 0"></span></span>
+<span class="line"><span class="code" style="--layer: 0"></span></span>
+<span class="line"><span class="code" style="--layer: 0">    </span><span><span class="code odd" style="--layer: 1" title="bb49: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
     31:9-31:23: Assign: _21 = move (_39.0: i32)
     27:29-32:6: Assign: _24 = const ()
     34:5-34:6: StorageDead: StorageDead(_28)
-    25:5-34:6: Goto: goto -&gt; bb53"><span class="annotation">52⦊</span></span><span class="code even" style="--layer: 8" title="bb36: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
+    25:5-34:6: Goto: goto -&gt; bb50"><span class="annotation">49⦊</span></span></span><span class="code even" style="--layer: 2" title="bb33: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
     26:9-26:23: Assign: _21 = move (_27.0: i32)
     25:22-27:6: Assign: _24 = const ()
-    25:5-34:6: Goto: goto -&gt; bb53"><span class="annotation">36⦊</span>if </span><span class="code even" style="--layer: 9" title="bb32: ../instrument-coverage/coverage_of_if_else.rs:25:8: 25:21:
+    25:5-34:6: Goto: goto -&gt; bb50"><span class="annotation">33⦊</span></span><span class="code even" style="--layer: 3" title="bb30: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
+    25:5-34:6: FalseEdge: falseEdge -&gt; [real: bb32, imaginary: bb31]"><span class="annotation">30⦊</span>if </span><span class="code even" style="--layer: 4" title="bb29: ../instrument-coverage/coverage_of_if_else.rs:25:8: 25:21:
     23:5-23:6: StorageDead: StorageDead(_23)
     23:5-23:6: StorageDead: StorageDead(_22)
     25:5-34:6: StorageLive: StorageLive(_24)
@@ -344,40 +303,47 @@
     25:8-25:21: Assign: _25 = Gt(move _26, const 7_i32)
     25:20-25:21: StorageDead: StorageDead(_26)
     25:8-25:21: FakeRead: FakeRead(ForMatchedPlace, _25)
-    25:5-34:6: SwitchInt: switchInt(_25) -&gt; [false: bb34, otherwise: bb33]"><span class="annotation">32⦊</span>countdown &gt; 7<span class="annotation">⦉32</span></span><span class="code even" style="--layer: 8" title="bb36: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
-    26:9-26:23: Assign: _21 = move (_27.0: i32)
-    25:22-27:6: Assign: _24 = const ()
-    25:5-34:6: Goto: goto -&gt; bb53"> {</span></span>
-<span class="line"><span class="code even" style="--layer: 8" title="bb36: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
-    26:9-26:23: Assign: _21 = move (_27.0: i32)
-    25:22-27:6: Assign: _24 = const ()
-    25:5-34:6: Goto: goto -&gt; bb53">        </span><span class="code odd" style="--layer: 9" title="bb35: ../instrument-coverage/coverage_of_if_else.rs:26:9: 26:23:
+    25:5-34:6: SwitchInt: switchInt(_25) -&gt; [false: bb31, otherwise: bb30]"><span class="annotation">29⦊</span>countdown &gt; 7<span class="annotation">⦉29</span></span><span class="code even" style="--layer: 3" title="bb30: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
+    25:5-34:6: FalseEdge: falseEdge -&gt; [real: bb32, imaginary: bb31]"> {</span></span>
+<span class="line"><span class="code even" style="--layer: 3" title="bb30: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
+    25:5-34:6: FalseEdge: falseEdge -&gt; [real: bb32, imaginary: bb31]">        </span><span class="code odd" style="--layer: 4" title="bb32: ../instrument-coverage/coverage_of_if_else.rs:26:9: 26:23:
     26:9-26:23: Assign: _27 = CheckedSub(_21, const 4_i32)
-    26:9-26:23: Assert: assert(!move (_27.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _21, const 4_i32) -&gt; [success: bb36, unwind: bb1]"><span class="annotation">35⦊</span>countdown -= 4<span class="annotation">⦉35</span></span><span class="code even" style="--layer: 8" title="bb36: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
-    26:9-26:23: Assign: _21 = move (_27.0: i32)
-    25:22-27:6: Assign: _24 = const ()
-    25:5-34:6: Goto: goto -&gt; bb53">;</span></span>
-<span class="line"><span class="code even" style="--layer: 8" title="bb36: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
-    26:9-26:23: Assign: _21 = move (_27.0: i32)
-    25:22-27:6: Assign: _24 = const ()
-    25:5-34:6: Goto: goto -&gt; bb53">    } else </span><span class="code even" style="--layer: 9" title="bb37: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
-    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb39, imaginary: bb38]"><span class="annotation">37⦊</span>if </span><span class="code even" style="--layer: 10" title="bb34: ../instrument-coverage/coverage_of_if_else.rs:27:15: 27:28:
+    26:9-26:23: Assert: assert(!move (_27.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _21, const 4_i32) -&gt; [success: bb33, unwind: bb78]"><span class="annotation">32⦊</span>countdown -= 4<span class="annotation">⦉32</span></span><span class="code even" style="--layer: 3" title="bb30: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
+    25:5-34:6: FalseEdge: falseEdge -&gt; [real: bb32, imaginary: bb31]">;</span></span>
+<span class="line"><span class="code even" style="--layer: 3" title="bb30: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
+    25:5-34:6: FalseEdge: falseEdge -&gt; [real: bb32, imaginary: bb31]">    } else </span><span class="code even" style="--layer: 4" title="bb34: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
+    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb36, imaginary: bb35]"><span class="annotation">34⦊</span>if </span><span class="code even" style="--layer: 5" title="bb31: ../instrument-coverage/coverage_of_if_else.rs:27:15: 27:28:
     27:15-27:28: StorageLive: StorageLive(_28)
     27:15-27:24: StorageLive: StorageLive(_29)
     27:15-27:24: Assign: _29 = _21
     27:15-27:28: Assign: _28 = Gt(move _29, const 2_i32)
     27:27-27:28: StorageDead: StorageDead(_29)
     27:15-27:28: FakeRead: FakeRead(ForMatchedPlace, _28)
-    27:12-34:6: SwitchInt: switchInt(_28) -&gt; [false: bb38, otherwise: bb37]"><span class="annotation">34⦊</span>countdown &gt; 2<span class="annotation">⦉34</span></span><span class="code even" style="--layer: 9" title="bb37: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
-    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb39, imaginary: bb38]"> {</span></span>
-<span class="line"><span class="code even" style="--layer: 9" title="bb37: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
-    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb39, imaginary: bb38]">        </span><span class="code odd" style="--layer: 10" title="bb48: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
-    28:9-30:10: FalseEdge: falseEdge -&gt; [real: bb50, imaginary: bb49]"><span class="annotation">48⦊</span></span><span class="code even" style="--layer: 11" title="bb50: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
+    27:12-34:6: SwitchInt: switchInt(_28) -&gt; [false: bb35, otherwise: bb34]"><span class="annotation">31⦊</span>countdown &gt; 2<span class="annotation">⦉31</span></span><span class="code even" style="--layer: 4" title="bb34: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
+    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb36, imaginary: bb35]"> {</span></span>
+<span class="line"><span class="code even" style="--layer: 4" title="bb34: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
+    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb36, imaginary: bb35]">        </span><span class="code odd" style="--layer: 5" title="bb46: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
+    28:9-30:10: Assign: _30 = const ()
+    28:9-30:10: Goto: goto -&gt; bb48"><span class="annotation">46⦊</span></span><span class="code even" style="--layer: 6" title="bb47: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
     29:13-29:26: Assign: _21 = const 0_i32
     28:61-30:10: Assign: _30 = const ()
-    28:9-30:10: Goto: goto -&gt; bb51"><span class="annotation">50⦊</span></span><span class="code even" style="--layer: 12" title="bb49: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
-    28:9-30:10: Assign: _30 = const ()
-    28:9-30:10: Goto: goto -&gt; bb51"><span class="annotation">49⦊</span>if </span><span class="code even" style="--layer: 13" title="bb39: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
+    28:9-30:10: Goto: goto -&gt; bb48"><span class="annotation">47⦊</span></span><span class="code even" style="--layer: 7" title="bb45: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
+    28:9-30:10: FalseEdge: falseEdge -&gt; [real: bb47, imaginary: bb46]"><span class="annotation">45⦊</span>if </span><span class="code even" style="--layer: 8" title="bb44: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
+    28:41-28:42: StorageDead: StorageDead(_35)
+    28:41-28:42: StorageDead: StorageDead(_33)
+    28:12-28:60: SwitchInt: switchInt(move _32) -&gt; [false: bb39, otherwise: bb37]"><span class="annotation">44⦊</span></span><span class="code even" style="--layer: 9" title="bb38: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
+    28:12-28:60: Assign: _31 = const false
+    28:12-28:60: Goto: goto -&gt; bb40"><span class="annotation">38⦊</span></span><span class="code even" style="--layer: 10" title="bb39: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
+    28:46-28:60: StorageLive: StorageLive(_37)
+    28:46-28:55: StorageLive: StorageLive(_38)
+    28:46-28:55: Assign: _38 = _21
+    28:46-28:60: Assign: _37 = Ne(move _38, const 9_i32)
+    28:59-28:60: StorageDead: StorageDead(_38)
+    28:12-28:60: SwitchInt: switchInt(move _37) -&gt; [false: bb38, otherwise: bb37]"><span class="annotation">39⦊</span></span><span class="code even" style="--layer: 11" title="bb40: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
+    28:59-28:60: StorageDead: StorageDead(_37)
+    28:59-28:60: StorageDead: StorageDead(_32)
+    28:12-28:60: FakeRead: FakeRead(ForMatchedPlace, _31)
+    28:9-30:10: SwitchInt: switchInt(_31) -&gt; [false: bb46, otherwise: bb45]"><span class="annotation">40⦊</span></span><span class="code even" style="--layer: 12" title="bb36: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
     28:9-30:10: StorageLive: StorageLive(_30)
     28:12-28:60: StorageLive: StorageLive(_31)
     28:12-28:42: StorageLive: StorageLive(_32)
@@ -386,59 +352,25 @@
     28:12-28:21: Assign: _34 = _21
     28:12-28:25: Assign: _33 = Lt(move _34, const 1_i32)
     28:24-28:25: StorageDead: StorageDead(_34)
-    28:12-28:42: SwitchInt: switchInt(move _33) -&gt; [false: bb46, otherwise: bb44]"><span class="annotation">39⦊</span></span><span class="code even" style="--layer: 14" title="bb47: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
-    28:41-28:42: StorageDead: StorageDead(_35)
-    28:41-28:42: StorageDead: StorageDead(_33)
-    28:12-28:60: SwitchInt: switchInt(move _32) -&gt; [false: bb42, otherwise: bb40]"><span class="annotation">47⦊</span></span><span class="code even" style="--layer: 15" title="bb40: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
+    28:12-28:42: SwitchInt: switchInt(move _33) -&gt; [false: bb43, otherwise: bb41]"><span class="annotation">36⦊</span></span><span class="code even" style="--layer: 13" title="bb37: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
     28:12-28:60: Assign: _31 = const true
-    28:12-28:60: Goto: goto -&gt; bb43"><span class="annotation">40⦊</span></span><span class="code even" style="--layer: 16" title="bb43: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
-    28:59-28:60: StorageDead: StorageDead(_37)
-    28:59-28:60: StorageDead: StorageDead(_32)
-    28:12-28:60: FakeRead: FakeRead(ForMatchedPlace, _31)
-    28:9-30:10: SwitchInt: switchInt(_31) -&gt; [false: bb49, otherwise: bb48]"><span class="annotation">43⦊</span></span><span class="code even" style="--layer: 17" title="bb42: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
-    28:46-28:60: StorageLive: StorageLive(_37)
-    28:46-28:55: StorageLive: StorageLive(_38)
-    28:46-28:55: Assign: _38 = _21
-    28:46-28:60: Assign: _37 = Ne(move _38, const 9_i32)
-    28:59-28:60: StorageDead: StorageDead(_38)
-    28:12-28:60: SwitchInt: switchInt(move _37) -&gt; [false: bb41, otherwise: bb40]"><span class="annotation">42⦊</span></span><span class="code even" style="--layer: 18" title="bb41: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
-    28:12-28:60: Assign: _31 = const false
-    28:12-28:60: Goto: goto -&gt; bb43"><span class="annotation">41⦊</span></span><span class="code even" style="--layer: 19" title="bb46: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:42:
-    28:29-28:42: StorageLive: StorageLive(_35)
-    28:29-28:38: StorageLive: StorageLive(_36)
-    28:29-28:38: Assign: _36 = _21
-    28:29-28:42: Assign: _35 = Gt(move _36, const 5_i32)
-    28:41-28:42: StorageDead: StorageDead(_36)
-    28:12-28:42: SwitchInt: switchInt(move _35) -&gt; [false: bb45, otherwise: bb44]"><span class="annotation">46⦊</span></span><span class="code even" style="--layer: 20" title="bb45: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:42:
-    28:12-28:42: Assign: _32 = const false
-    28:12-28:42: Goto: goto -&gt; bb47"><span class="annotation">45⦊</span></span><span class="code even" style="--layer: 21" title="bb44: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:42:
+    28:12-28:60: Goto: goto -&gt; bb40"><span class="annotation">37⦊</span></span><span class="code even" style="--layer: 14" title="bb41: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:42:
     28:12-28:42: Assign: _32 = const true
-    28:12-28:42: Goto: goto -&gt; bb47"><span class="annotation">44⦊</span>countdown &lt; 1 || countdown &gt; 5<span class="annotation">⦉44</span></span><span class="code even" style="--layer: 20" title="bb45: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:42:
+    28:12-28:42: Goto: goto -&gt; bb44"><span class="annotation">41⦊</span></span><span class="code even" style="--layer: 15" title="bb42: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:42:
     28:12-28:42: Assign: _32 = const false
-    28:12-28:42: Goto: goto -&gt; bb47"><span class="annotation">⦉45</span></span><span class="code even" style="--layer: 19" title="bb46: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:42:
+    28:12-28:42: Goto: goto -&gt; bb44"><span class="annotation">42⦊</span></span><span class="code even" style="--layer: 16" title="bb43: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:42:
     28:29-28:42: StorageLive: StorageLive(_35)
     28:29-28:38: StorageLive: StorageLive(_36)
     28:29-28:38: Assign: _36 = _21
     28:29-28:42: Assign: _35 = Gt(move _36, const 5_i32)
     28:41-28:42: StorageDead: StorageDead(_36)
-    28:12-28:42: SwitchInt: switchInt(move _35) -&gt; [false: bb45, otherwise: bb44]"><span class="annotation">⦉46</span></span><span class="code even" style="--layer: 18" title="bb41: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
-    28:12-28:60: Assign: _31 = const false
-    28:12-28:60: Goto: goto -&gt; bb43"> || countdown != 9<span class="annotation">⦉41</span></span><span class="code even" style="--layer: 17" title="bb42: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
-    28:46-28:60: StorageLive: StorageLive(_37)
-    28:46-28:55: StorageLive: StorageLive(_38)
-    28:46-28:55: Assign: _38 = _21
-    28:46-28:60: Assign: _37 = Ne(move _38, const 9_i32)
-    28:59-28:60: StorageDead: StorageDead(_38)
-    28:12-28:60: SwitchInt: switchInt(move _37) -&gt; [false: bb41, otherwise: bb40]"><span class="annotation">⦉42</span></span><span class="code even" style="--layer: 16" title="bb43: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
-    28:59-28:60: StorageDead: StorageDead(_37)
-    28:59-28:60: StorageDead: StorageDead(_32)
-    28:12-28:60: FakeRead: FakeRead(ForMatchedPlace, _31)
-    28:9-30:10: SwitchInt: switchInt(_31) -&gt; [false: bb49, otherwise: bb48]"><span class="annotation">⦉43</span></span><span class="code even" style="--layer: 15" title="bb40: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
+    28:12-28:42: SwitchInt: switchInt(move _35) -&gt; [false: bb42, otherwise: bb41]"><span class="annotation">43⦊</span>countdown &lt; 1 || countdown &gt; 5<span class="annotation">⦉43</span></span><span class="code even" style="--layer: 15" title="bb42: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:42:
+    28:12-28:42: Assign: _32 = const false
+    28:12-28:42: Goto: goto -&gt; bb44"><span class="annotation">⦉42</span></span><span class="code even" style="--layer: 14" title="bb41: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:42:
+    28:12-28:42: Assign: _32 = const true
+    28:12-28:42: Goto: goto -&gt; bb44"><span class="annotation">⦉41</span></span><span class="code even" style="--layer: 13" title="bb37: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
     28:12-28:60: Assign: _31 = const true
-    28:12-28:60: Goto: goto -&gt; bb43"><span class="annotation">⦉40</span></span><span class="code even" style="--layer: 14" title="bb47: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
-    28:41-28:42: StorageDead: StorageDead(_35)
-    28:41-28:42: StorageDead: StorageDead(_33)
-    28:12-28:60: SwitchInt: switchInt(move _32) -&gt; [false: bb42, otherwise: bb40]"><span class="annotation">⦉47</span></span><span class="code even" style="--layer: 13" title="bb39: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
+    28:12-28:60: Goto: goto -&gt; bb40"> || countdown != 9<span class="annotation">⦉37</span></span><span class="code even" style="--layer: 12" title="bb36: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
     28:9-30:10: StorageLive: StorageLive(_30)
     28:12-28:60: StorageLive: StorageLive(_31)
     28:12-28:42: StorageLive: StorageLive(_32)
@@ -447,104 +379,71 @@
     28:12-28:21: Assign: _34 = _21
     28:12-28:25: Assign: _33 = Lt(move _34, const 1_i32)
     28:24-28:25: StorageDead: StorageDead(_34)
-    28:12-28:42: SwitchInt: switchInt(move _33) -&gt; [false: bb46, otherwise: bb44]"><span class="annotation">⦉39</span></span><span class="code even" style="--layer: 12" title="bb49: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
-    28:9-30:10: Assign: _30 = const ()
-    28:9-30:10: Goto: goto -&gt; bb51"> {</span></span>
-<span class="line"><span class="code even" style="--layer: 12" title="bb49: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
-    28:9-30:10: Assign: _30 = const ()
-    28:9-30:10: Goto: goto -&gt; bb51">            countdown = 0;</span></span>
-<span class="line"><span class="code even" style="--layer: 12" title="bb49: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
-    28:9-30:10: Assign: _30 = const ()
-    28:9-30:10: Goto: goto -&gt; bb51">        </span><span class="code odd" style="--layer: 13" title="bb51: ../instrument-coverage/coverage_of_if_else.rs:30:9: 31:23:
+    28:12-28:42: SwitchInt: switchInt(move _33) -&gt; [false: bb43, otherwise: bb41]"><span class="annotation">⦉36</span></span><span class="code even" style="--layer: 11" title="bb40: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
+    28:59-28:60: StorageDead: StorageDead(_37)
+    28:59-28:60: StorageDead: StorageDead(_32)
+    28:12-28:60: FakeRead: FakeRead(ForMatchedPlace, _31)
+    28:9-30:10: SwitchInt: switchInt(_31) -&gt; [false: bb46, otherwise: bb45]"><span class="annotation">⦉40</span></span><span class="code even" style="--layer: 10" title="bb39: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
+    28:46-28:60: StorageLive: StorageLive(_37)
+    28:46-28:55: StorageLive: StorageLive(_38)
+    28:46-28:55: Assign: _38 = _21
+    28:46-28:60: Assign: _37 = Ne(move _38, const 9_i32)
+    28:59-28:60: StorageDead: StorageDead(_38)
+    28:12-28:60: SwitchInt: switchInt(move _37) -&gt; [false: bb38, otherwise: bb37]"><span class="annotation">⦉39</span></span><span class="code even" style="--layer: 9" title="bb38: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
+    28:12-28:60: Assign: _31 = const false
+    28:12-28:60: Goto: goto -&gt; bb40"><span class="annotation">⦉38</span></span><span class="code even" style="--layer: 8" title="bb44: ../instrument-coverage/coverage_of_if_else.rs:28:12: 28:60:
+    28:41-28:42: StorageDead: StorageDead(_35)
+    28:41-28:42: StorageDead: StorageDead(_33)
+    28:12-28:60: SwitchInt: switchInt(move _32) -&gt; [false: bb39, otherwise: bb37]"><span class="annotation">⦉44</span></span><span class="code even" style="--layer: 7" title="bb45: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
+    28:9-30:10: FalseEdge: falseEdge -&gt; [real: bb47, imaginary: bb46]"> {</span></span>
+<span class="line"><span class="code even" style="--layer: 7" title="bb45: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
+    28:9-30:10: FalseEdge: falseEdge -&gt; [real: bb47, imaginary: bb46]">            countdown = 0;</span></span>
+<span class="line"><span class="code even" style="--layer: 7" title="bb45: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
+    28:9-30:10: FalseEdge: falseEdge -&gt; [real: bb47, imaginary: bb46]">        </span><span class="code odd" style="--layer: 8" title="bb48: ../instrument-coverage/coverage_of_if_else.rs:30:9: 31:23:
     30:9-30:10: StorageDead: StorageDead(_31)
     30:9-30:10: StorageDead: StorageDead(_30)
     31:9-31:23: Assign: _39 = CheckedSub(_21, const 5_i32)
-    31:9-31:23: Assert: assert(!move (_39.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _21, const 5_i32) -&gt; [success: bb52, unwind: bb1]"><span class="annotation">51⦊</span>}</span><span class="code odd" style="--layer: 10" title="bb48: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
-    28:9-30:10: FalseEdge: falseEdge -&gt; [real: bb50, imaginary: bb49]"><span class="annotation">⦉48</span></span><span class="code even" style="--layer: 11" title="bb50: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
+    31:9-31:23: Assert: assert(!move (_39.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _21, const 5_i32) -&gt; [success: bb49, unwind: bb78]"><span class="annotation">48⦊</span>}</span><span class="code odd" style="--layer: 5" title="bb46: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
+    28:9-30:10: Assign: _30 = const ()
+    28:9-30:10: Goto: goto -&gt; bb48"><span class="annotation">⦉46</span></span><span class="code even" style="--layer: 6" title="bb47: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
     29:13-29:26: Assign: _21 = const 0_i32
     28:61-30:10: Assign: _30 = const ()
-    28:9-30:10: Goto: goto -&gt; bb51"><span class="annotation">⦉50</span></span><span class="code even" style="--layer: 12" title="bb49: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
-    28:9-30:10: Assign: _30 = const ()
-    28:9-30:10: Goto: goto -&gt; bb51"><span class="annotation">⦉49</span></span><span class="code even" style="--layer: 12" title="bb49: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
-    28:9-30:10: Assign: _30 = const ()
-    28:9-30:10: Goto: goto -&gt; bb51"><span class="annotation">⦉49</span></span><span class="code odd" style="--layer: 13" title="bb51: ../instrument-coverage/coverage_of_if_else.rs:30:9: 31:23:
+    28:9-30:10: Goto: goto -&gt; bb48"><span class="annotation">⦉47</span></span><span class="code even" style="--layer: 7" title="bb45: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
+    28:9-30:10: FalseEdge: falseEdge -&gt; [real: bb47, imaginary: bb46]"><span class="annotation">⦉45</span></span><span class="code even" style="--layer: 7" title="bb45: ../instrument-coverage/coverage_of_if_else.rs:28:9: 30:10:
+    28:9-30:10: FalseEdge: falseEdge -&gt; [real: bb47, imaginary: bb46]"><span class="annotation">⦉45</span></span><span class="code odd" style="--layer: 8" title="bb48: ../instrument-coverage/coverage_of_if_else.rs:30:9: 31:23:
     30:9-30:10: StorageDead: StorageDead(_31)
     30:9-30:10: StorageDead: StorageDead(_30)
     31:9-31:23: Assign: _39 = CheckedSub(_21, const 5_i32)
-    31:9-31:23: Assert: assert(!move (_39.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _21, const 5_i32) -&gt; [success: bb52, unwind: bb1]"></span></span>
-<span class="line"><span class="code odd" style="--layer: 13" title="bb51: ../instrument-coverage/coverage_of_if_else.rs:30:9: 31:23:
+    31:9-31:23: Assert: assert(!move (_39.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _21, const 5_i32) -&gt; [success: bb49, unwind: bb78]"></span></span>
+<span class="line"><span class="code odd" style="--layer: 8" title="bb48: ../instrument-coverage/coverage_of_if_else.rs:30:9: 31:23:
     30:9-30:10: StorageDead: StorageDead(_31)
     30:9-30:10: StorageDead: StorageDead(_30)
     31:9-31:23: Assign: _39 = CheckedSub(_21, const 5_i32)
-    31:9-31:23: Assert: assert(!move (_39.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _21, const 5_i32) -&gt; [success: bb52, unwind: bb1]">        countdown -= 5<span class="annotation">⦉51</span></span><span class="code even" style="--layer: 9" title="bb37: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
-    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb39, imaginary: bb38]">;</span></span>
-<span class="line"><span class="code even" style="--layer: 9" title="bb37: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
-    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb39, imaginary: bb38]">    } else {</span></span>
-<span class="line"><span class="code even" style="--layer: 9" title="bb37: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
-    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb39, imaginary: bb38]">        </span><span class="code even" style="--layer: 10" title="bb38: ../instrument-coverage/coverage_of_if_else.rs:33:9: 51:2:
-    33:9-33:15: Assign: _0 = const ()
-    34:5-34:6: StorageDead: StorageDead(_28)
-    34:5-34:6: StorageDead: StorageDead(_25)
-    34:5-34:6: StorageDead: StorageDead(_24)
-    51:1-51:2: StorageDead: StorageDead(_21)
-    33:9-33:15: Goto: goto -&gt; bb27"><span class="annotation">38⦊</span>return;</span></span>
-<span class="line"><span class="code even" style="--layer: 10" title="bb38: ../instrument-coverage/coverage_of_if_else.rs:33:9: 51:2:
-    33:9-33:15: Assign: _0 = const ()
-    34:5-34:6: StorageDead: StorageDead(_28)
-    34:5-34:6: StorageDead: StorageDead(_25)
-    34:5-34:6: StorageDead: StorageDead(_24)
-    51:1-51:2: StorageDead: StorageDead(_21)
-    33:9-33:15: Goto: goto -&gt; bb27">    }</span><span class="code even" style="--layer: 6" title="bb33: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
-    25:5-34:6: FalseEdge: falseEdge -&gt; [real: bb35, imaginary: bb34]"><span class="annotation">⦉33</span></span><span class="code even" style="--layer: 7" title="bb52: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
-    31:9-31:23: Assign: _21 = move (_39.0: i32)
-    27:29-32:6: Assign: _24 = const ()
-    34:5-34:6: StorageDead: StorageDead(_28)
-    25:5-34:6: Goto: goto -&gt; bb53"><span class="annotation">⦉52</span></span><span class="code even" style="--layer: 8" title="bb36: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
+    31:9-31:23: Assert: assert(!move (_39.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _21, const 5_i32) -&gt; [success: bb49, unwind: bb78]">        countdown -= 5<span class="annotation">⦉48</span></span><span class="code even" style="--layer: 4" title="bb34: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
+    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb36, imaginary: bb35]">;</span></span>
+<span class="line"><span class="code even" style="--layer: 4" title="bb34: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
+    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb36, imaginary: bb35]">    } else {</span></span>
+<span class="line"><span class="code even" style="--layer: 4" title="bb34: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
+    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb36, imaginary: bb35]">        return;</span></span>
+<span class="line"><span class="code even" style="--layer: 4" title="bb34: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
+    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb36, imaginary: bb35]">    }<span class="annotation">⦉34</span></span><span class="code even" style="--layer: 3" title="bb30: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
+    25:5-34:6: FalseEdge: falseEdge -&gt; [real: bb32, imaginary: bb31]"><span class="annotation">⦉30</span></span><span class="code even" style="--layer: 2" title="bb33: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
     26:9-26:23: Assign: _21 = move (_27.0: i32)
     25:22-27:6: Assign: _24 = const ()
-    25:5-34:6: Goto: goto -&gt; bb53"><span class="annotation">⦉36</span></span><span class="code even" style="--layer: 8" title="bb36: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
-    26:9-26:23: Assign: _21 = move (_27.0: i32)
-    25:22-27:6: Assign: _24 = const ()
-    25:5-34:6: Goto: goto -&gt; bb53"><span class="annotation">⦉36</span></span><span class="code even" style="--layer: 8" title="bb36: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
-    26:9-26:23: Assign: _21 = move (_27.0: i32)
-    25:22-27:6: Assign: _24 = const ()
-    25:5-34:6: Goto: goto -&gt; bb53"><span class="annotation">⦉36</span></span><span class="code even" style="--layer: 9" title="bb37: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
-    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb39, imaginary: bb38]"><span class="annotation">⦉37</span></span><span class="code even" style="--layer: 9" title="bb37: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
-    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb39, imaginary: bb38]"><span class="annotation">⦉37</span></span><span class="code even" style="--layer: 9" title="bb37: ../instrument-coverage/coverage_of_if_else.rs:27:12: 34:6:
-    27:12-34:6: FalseEdge: falseEdge -&gt; [real: bb39, imaginary: bb38]"><span class="annotation">⦉37</span></span><span class="code even" style="--layer: 10" title="bb38: ../instrument-coverage/coverage_of_if_else.rs:33:9: 51:2:
-    33:9-33:15: Assign: _0 = const ()
-    34:5-34:6: StorageDead: StorageDead(_28)
-    34:5-34:6: StorageDead: StorageDead(_25)
-    34:5-34:6: StorageDead: StorageDead(_24)
-    51:1-51:2: StorageDead: StorageDead(_21)
-    33:9-33:15: Goto: goto -&gt; bb27"></span></span>
-<span class="line"><span class="code even" style="--layer: 10" title="bb38: ../instrument-coverage/coverage_of_if_else.rs:33:9: 51:2:
-    33:9-33:15: Assign: _0 = const ()
-    34:5-34:6: StorageDead: StorageDead(_28)
-    34:5-34:6: StorageDead: StorageDead(_25)
-    34:5-34:6: StorageDead: StorageDead(_24)
-    51:1-51:2: StorageDead: StorageDead(_21)
-    33:9-33:15: Goto: goto -&gt; bb27"></span></span>
-<span class="line"><span class="code even" style="--layer: 10" title="bb38: ../instrument-coverage/coverage_of_if_else.rs:33:9: 51:2:
-    33:9-33:15: Assign: _0 = const ()
-    34:5-34:6: StorageDead: StorageDead(_28)
-    34:5-34:6: StorageDead: StorageDead(_25)
-    34:5-34:6: StorageDead: StorageDead(_24)
-    51:1-51:2: StorageDead: StorageDead(_21)
-    33:9-33:15: Goto: goto -&gt; bb27">    let mut countdown = 0;</span></span>
-<span class="line"><span class="code even" style="--layer: 10" title="bb38: ../instrument-coverage/coverage_of_if_else.rs:33:9: 51:2:
-    33:9-33:15: Assign: _0 = const ()
+    25:5-34:6: Goto: goto -&gt; bb50"><span class="annotation">⦉33</span></span><span><span class="code odd" style="--layer: 1" title="bb49: ../instrument-coverage/coverage_of_if_else.rs:25:5: 34:6:
+    31:9-31:23: Assign: _21 = move (_39.0: i32)
+    27:29-32:6: Assign: _24 = const ()
     34:5-34:6: StorageDead: StorageDead(_28)
-    34:5-34:6: StorageDead: StorageDead(_25)
-    34:5-34:6: StorageDead: StorageDead(_24)
-    51:1-51:2: StorageDead: StorageDead(_21)
-    33:9-33:15: Goto: goto -&gt; bb27">    </span><span class="code even" style="--layer: 11" title="bb56: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
+    25:5-34:6: Goto: goto -&gt; bb50"><span class="annotation">⦉49</span></span></span><span class="code" style="--layer: 0"></span></span>
+<span class="line"><span class="code" style="--layer: 0"></span></span>
+<span class="line"><span class="code" style="--layer: 0">    let mut countdown = 0;</span></span>
+<span class="line"><span class="code" style="--layer: 0">    </span><span><span class="code even" style="--layer: 1" title="bb52: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
+    37:5-39:6: Assign: _42 = const ()
+    37:5-39:6: Goto: goto -&gt; bb54"><span class="annotation">52⦊</span></span></span><span class="code even" style="--layer: 2" title="bb51: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
+    37:5-39:6: FalseEdge: falseEdge -&gt; [real: bb53, imaginary: bb52]"><span class="annotation">51⦊</span></span><span class="code even" style="--layer: 3" title="bb53: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
     38:9-38:23: Assign: _41 = const 10_i32
     37:13-39:6: Assign: _42 = const ()
-    37:5-39:6: Goto: goto -&gt; bb57"><span class="annotation">56⦊</span></span><span class="code even" style="--layer: 12" title="bb54: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
-    37:5-39:6: FalseEdge: falseEdge -&gt; [real: bb56, imaginary: bb55]"><span class="annotation">54⦊</span></span><span class="code even" style="--layer: 13" title="bb55: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
-    37:5-39:6: Assign: _42 = const ()
-    37:5-39:6: Goto: goto -&gt; bb57"><span class="annotation">55⦊</span>if </span><span class="code even" style="--layer: 14" title="bb53: ../instrument-coverage/coverage_of_if_else.rs:37:8: 37:12:
+    37:5-39:6: Goto: goto -&gt; bb54"><span class="annotation">53⦊</span>if </span><span class="code even" style="--layer: 4" title="bb50: ../instrument-coverage/coverage_of_if_else.rs:37:8: 37:12:
     34:5-34:6: StorageDead: StorageDead(_25)
     34:5-34:6: StorageDead: StorageDead(_24)
     36:9-36:22: StorageLive: StorageLive(_41)
@@ -554,47 +453,31 @@
     37:8-37:12: StorageLive: StorageLive(_43)
     37:8-37:12: Assign: _43 = const true
     37:8-37:12: FakeRead: FakeRead(ForMatchedPlace, _43)
-    37:5-39:6: SwitchInt: switchInt(_43) -&gt; [false: bb55, otherwise: bb54]"><span class="annotation">53⦊</span>true<span class="annotation">⦉53</span></span><span class="code even" style="--layer: 13" title="bb55: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
-    37:5-39:6: Assign: _42 = const ()
-    37:5-39:6: Goto: goto -&gt; bb57"> {</span></span>
-<span class="line"><span class="code even" style="--layer: 13" title="bb55: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
-    37:5-39:6: Assign: _42 = const ()
-    37:5-39:6: Goto: goto -&gt; bb57">        countdown = 10;</span></span>
-<span class="line"><span class="code even" style="--layer: 13" title="bb55: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
-    37:5-39:6: Assign: _42 = const ()
-    37:5-39:6: Goto: goto -&gt; bb57">    }<span class="annotation">⦉55</span></span><span class="code even" style="--layer: 12" title="bb54: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
-    37:5-39:6: FalseEdge: falseEdge -&gt; [real: bb56, imaginary: bb55]"><span class="annotation">⦉54</span></span><span class="code even" style="--layer: 11" title="bb56: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
+    37:5-39:6: SwitchInt: switchInt(_43) -&gt; [false: bb52, otherwise: bb51]"><span class="annotation">50⦊</span>true<span class="annotation">⦉50</span></span><span class="code even" style="--layer: 3" title="bb53: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
     38:9-38:23: Assign: _41 = const 10_i32
     37:13-39:6: Assign: _42 = const ()
-    37:5-39:6: Goto: goto -&gt; bb57"><span class="annotation">⦉56</span></span><span class="code even" style="--layer: 10" title="bb38: ../instrument-coverage/coverage_of_if_else.rs:33:9: 51:2:
-    33:9-33:15: Assign: _0 = const ()
-    34:5-34:6: StorageDead: StorageDead(_28)
-    34:5-34:6: StorageDead: StorageDead(_25)
-    34:5-34:6: StorageDead: StorageDead(_24)
-    51:1-51:2: StorageDead: StorageDead(_21)
-    33:9-33:15: Goto: goto -&gt; bb27"></span></span>
-<span class="line"><span class="code even" style="--layer: 10" title="bb38: ../instrument-coverage/coverage_of_if_else.rs:33:9: 51:2:
-    33:9-33:15: Assign: _0 = const ()
-    34:5-34:6: StorageDead: StorageDead(_28)
-    34:5-34:6: StorageDead: StorageDead(_25)
-    34:5-34:6: StorageDead: StorageDead(_24)
-    51:1-51:2: StorageDead: StorageDead(_21)
-    33:9-33:15: Goto: goto -&gt; bb27"></span></span>
-<span class="line"><span class="code even" style="--layer: 10" title="bb38: ../instrument-coverage/coverage_of_if_else.rs:33:9: 51:2:
-    33:9-33:15: Assign: _0 = const ()
-    34:5-34:6: StorageDead: StorageDead(_28)
-    34:5-34:6: StorageDead: StorageDead(_25)
-    34:5-34:6: StorageDead: StorageDead(_24)
-    51:1-51:2: StorageDead: StorageDead(_21)
-    33:9-33:15: Goto: goto -&gt; bb27">    </span><span class="code odd" style="--layer: 11" title="bb61: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
-    42:9-42:23: Assign: _41 = move (_46.0: i32)
-    41:22-43:6: Assign: _0 = const ()
-    41:5-50:6: Goto: goto -&gt; bb78"><span class="annotation">61⦊</span></span><span class="code even" style="--layer: 12" title="bb58: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
-    41:5-50:6: FalseEdge: falseEdge -&gt; [real: bb60, imaginary: bb59]"><span class="annotation">58⦊</span></span><span class="code even" style="--layer: 13" title="bb77: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
+    37:5-39:6: Goto: goto -&gt; bb54"> {</span></span>
+<span class="line"><span class="code even" style="--layer: 3" title="bb53: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
+    38:9-38:23: Assign: _41 = const 10_i32
+    37:13-39:6: Assign: _42 = const ()
+    37:5-39:6: Goto: goto -&gt; bb54">        countdown = 10;</span></span>
+<span class="line"><span class="code even" style="--layer: 3" title="bb53: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
+    38:9-38:23: Assign: _41 = const 10_i32
+    37:13-39:6: Assign: _42 = const ()
+    37:5-39:6: Goto: goto -&gt; bb54">    }<span class="annotation">⦉53</span></span><span class="code even" style="--layer: 2" title="bb51: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
+    37:5-39:6: FalseEdge: falseEdge -&gt; [real: bb53, imaginary: bb52]"><span class="annotation">⦉51</span></span><span><span class="code even" style="--layer: 1" title="bb52: ../instrument-coverage/coverage_of_if_else.rs:37:5: 39:6:
+    37:5-39:6: Assign: _42 = const ()
+    37:5-39:6: Goto: goto -&gt; bb54"><span class="annotation">⦉52</span></span></span><span class="code" style="--layer: 0"></span></span>
+<span class="line"><span class="code" style="--layer: 0"></span></span>
+<span class="line"><span class="code" style="--layer: 0">    </span><span><span class="code odd" style="--layer: 1" title="bb74: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
     47:9-47:23: Assign: _41 = move (_58.0: i32)
     43:29-48:6: Assign: _0 = const ()
     50:5-50:6: StorageDead: StorageDead(_47)
-    41:5-50:6: Goto: goto -&gt; bb78"><span class="annotation">77⦊</span>if </span><span class="code even" style="--layer: 14" title="bb57: ../instrument-coverage/coverage_of_if_else.rs:41:8: 41:21:
+    41:5-50:6: Goto: goto -&gt; bb75"><span class="annotation">74⦊</span></span></span><span class="code even" style="--layer: 2" title="bb55: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
+    41:5-50:6: FalseEdge: falseEdge -&gt; [real: bb57, imaginary: bb56]"><span class="annotation">55⦊</span></span><span class="code even" style="--layer: 3" title="bb58: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
+    42:9-42:23: Assign: _41 = move (_46.0: i32)
+    41:22-43:6: Assign: _0 = const ()
+    41:5-50:6: Goto: goto -&gt; bb75"><span class="annotation">58⦊</span>if </span><span class="code even" style="--layer: 4" title="bb54: ../instrument-coverage/coverage_of_if_else.rs:41:8: 41:21:
     39:5-39:6: StorageDead: StorageDead(_43)
     39:5-39:6: StorageDead: StorageDead(_42)
     41:8-41:21: StorageLive: StorageLive(_44)
@@ -603,59 +486,57 @@
     41:8-41:21: Assign: _44 = Gt(move _45, const 7_i32)
     41:20-41:21: StorageDead: StorageDead(_45)
     41:8-41:21: FakeRead: FakeRead(ForMatchedPlace, _44)
-    41:5-50:6: SwitchInt: switchInt(_44) -&gt; [false: bb59, otherwise: bb58]"><span class="annotation">57⦊</span>countdown &gt; 7<span class="annotation">⦉57</span></span><span class="code even" style="--layer: 13" title="bb77: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
-    47:9-47:23: Assign: _41 = move (_58.0: i32)
-    43:29-48:6: Assign: _0 = const ()
-    50:5-50:6: StorageDead: StorageDead(_47)
-    41:5-50:6: Goto: goto -&gt; bb78"> {</span></span>
-<span class="line"><span class="code even" style="--layer: 13" title="bb77: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
-    47:9-47:23: Assign: _41 = move (_58.0: i32)
-    43:29-48:6: Assign: _0 = const ()
-    50:5-50:6: StorageDead: StorageDead(_47)
-    41:5-50:6: Goto: goto -&gt; bb78">        </span><span class="code odd" style="--layer: 14" title="bb60: ../instrument-coverage/coverage_of_if_else.rs:42:9: 42:23:
+    41:5-50:6: SwitchInt: switchInt(_44) -&gt; [false: bb56, otherwise: bb55]"><span class="annotation">54⦊</span>countdown &gt; 7<span class="annotation">⦉54</span></span><span class="code even" style="--layer: 3" title="bb58: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
+    42:9-42:23: Assign: _41 = move (_46.0: i32)
+    41:22-43:6: Assign: _0 = const ()
+    41:5-50:6: Goto: goto -&gt; bb75"> {</span></span>
+<span class="line"><span class="code even" style="--layer: 3" title="bb58: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
+    42:9-42:23: Assign: _41 = move (_46.0: i32)
+    41:22-43:6: Assign: _0 = const ()
+    41:5-50:6: Goto: goto -&gt; bb75">        </span><span class="code odd" style="--layer: 4" title="bb57: ../instrument-coverage/coverage_of_if_else.rs:42:9: 42:23:
     42:9-42:23: Assign: _46 = CheckedSub(_41, const 4_i32)
-    42:9-42:23: Assert: assert(!move (_46.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _41, const 4_i32) -&gt; [success: bb61, unwind: bb1]"><span class="annotation">60⦊</span>countdown -= 4<span class="annotation">⦉60</span></span><span class="code even" style="--layer: 13" title="bb77: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
-    47:9-47:23: Assign: _41 = move (_58.0: i32)
-    43:29-48:6: Assign: _0 = const ()
-    50:5-50:6: StorageDead: StorageDead(_47)
-    41:5-50:6: Goto: goto -&gt; bb78">;</span></span>
-<span class="line"><span class="code even" style="--layer: 13" title="bb77: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
-    47:9-47:23: Assign: _41 = move (_58.0: i32)
-    43:29-48:6: Assign: _0 = const ()
-    50:5-50:6: StorageDead: StorageDead(_47)
-    41:5-50:6: Goto: goto -&gt; bb78">    } else </span><span class="code even" style="--layer: 14" title="bb62: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
-    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb64, imaginary: bb63]"><span class="annotation">62⦊</span>if </span><span class="code even" style="--layer: 15" title="bb59: ../instrument-coverage/coverage_of_if_else.rs:43:15: 43:28:
+    42:9-42:23: Assert: assert(!move (_46.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _41, const 4_i32) -&gt; [success: bb58, unwind: bb78]"><span class="annotation">57⦊</span>countdown -= 4<span class="annotation">⦉57</span></span><span class="code even" style="--layer: 3" title="bb58: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
+    42:9-42:23: Assign: _41 = move (_46.0: i32)
+    41:22-43:6: Assign: _0 = const ()
+    41:5-50:6: Goto: goto -&gt; bb75">;</span></span>
+<span class="line"><span class="code even" style="--layer: 3" title="bb58: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
+    42:9-42:23: Assign: _41 = move (_46.0: i32)
+    41:22-43:6: Assign: _0 = const ()
+    41:5-50:6: Goto: goto -&gt; bb75">    } else </span><span class="code even" style="--layer: 4" title="bb59: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
+    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb61, imaginary: bb60]"><span class="annotation">59⦊</span>if </span><span class="code even" style="--layer: 5" title="bb56: ../instrument-coverage/coverage_of_if_else.rs:43:15: 43:28:
     43:15-43:28: StorageLive: StorageLive(_47)
     43:15-43:24: StorageLive: StorageLive(_48)
     43:15-43:24: Assign: _48 = _41
     43:15-43:28: Assign: _47 = Gt(move _48, const 2_i32)
     43:27-43:28: StorageDead: StorageDead(_48)
     43:15-43:28: FakeRead: FakeRead(ForMatchedPlace, _47)
-    43:12-50:6: SwitchInt: switchInt(_47) -&gt; [false: bb63, otherwise: bb62]"><span class="annotation">59⦊</span>countdown &gt; 2<span class="annotation">⦉59</span></span><span class="code even" style="--layer: 14" title="bb62: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
-    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb64, imaginary: bb63]"> {</span></span>
-<span class="line"><span class="code even" style="--layer: 14" title="bb62: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
-    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb64, imaginary: bb63]">        </span><span class="code odd" style="--layer: 15" title="bb75: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
+    43:12-50:6: SwitchInt: switchInt(_47) -&gt; [false: bb60, otherwise: bb59]"><span class="annotation">56⦊</span>countdown &gt; 2<span class="annotation">⦉56</span></span><span class="code even" style="--layer: 4" title="bb59: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
+    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb61, imaginary: bb60]"> {</span></span>
+<span class="line"><span class="code even" style="--layer: 4" title="bb59: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
+    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb61, imaginary: bb60]">        </span><span class="code odd" style="--layer: 5" title="bb71: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
+    44:9-46:10: Assign: _49 = const ()
+    44:9-46:10: Goto: goto -&gt; bb73"><span class="annotation">71⦊</span></span><span class="code even" style="--layer: 6" title="bb72: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
     45:13-45:26: Assign: _41 = const 0_i32
     44:61-46:10: Assign: _49 = const ()
-    44:9-46:10: Goto: goto -&gt; bb76"><span class="annotation">75⦊</span></span><span class="code even" style="--layer: 16" title="bb74: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
-    44:9-46:10: Assign: _49 = const ()
-    44:9-46:10: Goto: goto -&gt; bb76"><span class="annotation">74⦊</span></span><span class="code even" style="--layer: 17" title="bb73: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
-    44:9-46:10: FalseEdge: falseEdge -&gt; [real: bb75, imaginary: bb74]"><span class="annotation">73⦊</span>if </span><span class="code even" style="--layer: 18" title="bb67: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
+    44:9-46:10: Goto: goto -&gt; bb73"><span class="annotation">72⦊</span></span><span class="code even" style="--layer: 7" title="bb70: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
+    44:9-46:10: FalseEdge: falseEdge -&gt; [real: bb72, imaginary: bb71]"><span class="annotation">70⦊</span>if </span><span class="code even" style="--layer: 8" title="bb63: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
+    44:12-44:60: Assign: _50 = const false
+    44:12-44:60: Goto: goto -&gt; bb65"><span class="annotation">63⦊</span></span><span class="code even" style="--layer: 9" title="bb64: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
     44:46-44:60: StorageLive: StorageLive(_56)
     44:46-44:55: StorageLive: StorageLive(_57)
     44:46-44:55: Assign: _57 = _41
     44:46-44:60: Assign: _56 = Ne(move _57, const 9_i32)
     44:59-44:60: StorageDead: StorageDead(_57)
-    44:12-44:60: SwitchInt: switchInt(move _56) -&gt; [false: bb66, otherwise: bb65]"><span class="annotation">67⦊</span></span><span class="code even" style="--layer: 19" title="bb68: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
+    44:12-44:60: SwitchInt: switchInt(move _56) -&gt; [false: bb63, otherwise: bb62]"><span class="annotation">64⦊</span></span><span class="code even" style="--layer: 10" title="bb65: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
     44:59-44:60: StorageDead: StorageDead(_56)
     44:59-44:60: StorageDead: StorageDead(_51)
     44:12-44:60: FakeRead: FakeRead(ForMatchedPlace, _50)
-    44:9-46:10: SwitchInt: switchInt(_50) -&gt; [false: bb74, otherwise: bb73]"><span class="annotation">68⦊</span></span><span class="code even" style="--layer: 20" title="bb65: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
+    44:9-46:10: SwitchInt: switchInt(_50) -&gt; [false: bb71, otherwise: bb70]"><span class="annotation">65⦊</span></span><span class="code even" style="--layer: 11" title="bb62: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
     44:12-44:60: Assign: _50 = const true
-    44:12-44:60: Goto: goto -&gt; bb68"><span class="annotation">65⦊</span></span><span class="code even" style="--layer: 21" title="bb72: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
+    44:12-44:60: Goto: goto -&gt; bb65"><span class="annotation">62⦊</span></span><span class="code even" style="--layer: 12" title="bb69: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
     44:41-44:42: StorageDead: StorageDead(_54)
     44:41-44:42: StorageDead: StorageDead(_52)
-    44:12-44:60: SwitchInt: switchInt(move _51) -&gt; [false: bb67, otherwise: bb65]"><span class="annotation">72⦊</span></span><span class="code even" style="--layer: 22" title="bb64: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
+    44:12-44:60: SwitchInt: switchInt(move _51) -&gt; [false: bb64, otherwise: bb62]"><span class="annotation">69⦊</span></span><span class="code even" style="--layer: 13" title="bb61: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
     44:9-46:10: StorageLive: StorageLive(_49)
     44:12-44:60: StorageLive: StorageLive(_50)
     44:12-44:42: StorageLive: StorageLive(_51)
@@ -664,29 +545,25 @@
     44:12-44:21: Assign: _53 = _41
     44:12-44:25: Assign: _52 = Lt(move _53, const 1_i32)
     44:24-44:25: StorageDead: StorageDead(_53)
-    44:12-44:42: SwitchInt: switchInt(move _52) -&gt; [false: bb71, otherwise: bb69]"><span class="annotation">64⦊</span></span><span class="code even" style="--layer: 23" title="bb66: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
-    44:12-44:60: Assign: _50 = const false
-    44:12-44:60: Goto: goto -&gt; bb68"><span class="annotation">66⦊</span></span><span class="code even" style="--layer: 24" title="bb69: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:42:
-    44:12-44:42: Assign: _51 = const true
-    44:12-44:42: Goto: goto -&gt; bb72"><span class="annotation">69⦊</span></span><span class="code even" style="--layer: 25" title="bb71: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:42:
+    44:12-44:42: SwitchInt: switchInt(move _52) -&gt; [false: bb68, otherwise: bb66]"><span class="annotation">61⦊</span></span><span class="code even" style="--layer: 14" title="bb67: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:42:
+    44:12-44:42: Assign: _51 = const false
+    44:12-44:42: Goto: goto -&gt; bb69"><span class="annotation">67⦊</span></span><span class="code even" style="--layer: 15" title="bb68: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:42:
     44:29-44:42: StorageLive: StorageLive(_54)
     44:29-44:38: StorageLive: StorageLive(_55)
     44:29-44:38: Assign: _55 = _41
     44:29-44:42: Assign: _54 = Gt(move _55, const 5_i32)
     44:41-44:42: StorageDead: StorageDead(_55)
-    44:12-44:42: SwitchInt: switchInt(move _54) -&gt; [false: bb70, otherwise: bb69]"><span class="annotation">71⦊</span></span><span class="code even" style="--layer: 26" title="bb70: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:42:
-    44:12-44:42: Assign: _51 = const false
-    44:12-44:42: Goto: goto -&gt; bb72"><span class="annotation">70⦊</span>countdown &lt; 1 || countdown &gt; 5<span class="annotation">⦉70</span></span><span class="code even" style="--layer: 25" title="bb71: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:42:
+    44:12-44:42: SwitchInt: switchInt(move _54) -&gt; [false: bb67, otherwise: bb66]"><span class="annotation">68⦊</span></span><span class="code even" style="--layer: 16" title="bb66: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:42:
+    44:12-44:42: Assign: _51 = const true
+    44:12-44:42: Goto: goto -&gt; bb69"><span class="annotation">66⦊</span>countdown &lt; 1 || countdown &gt; 5<span class="annotation">⦉66</span></span><span class="code even" style="--layer: 15" title="bb68: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:42:
     44:29-44:42: StorageLive: StorageLive(_54)
     44:29-44:38: StorageLive: StorageLive(_55)
     44:29-44:38: Assign: _55 = _41
     44:29-44:42: Assign: _54 = Gt(move _55, const 5_i32)
     44:41-44:42: StorageDead: StorageDead(_55)
-    44:12-44:42: SwitchInt: switchInt(move _54) -&gt; [false: bb70, otherwise: bb69]"><span class="annotation">⦉71</span></span><span class="code even" style="--layer: 24" title="bb69: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:42:
-    44:12-44:42: Assign: _51 = const true
-    44:12-44:42: Goto: goto -&gt; bb72"><span class="annotation">⦉69</span></span><span class="code even" style="--layer: 23" title="bb66: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
-    44:12-44:60: Assign: _50 = const false
-    44:12-44:60: Goto: goto -&gt; bb68"> || countdown != 9<span class="annotation">⦉66</span></span><span class="code even" style="--layer: 22" title="bb64: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
+    44:12-44:42: SwitchInt: switchInt(move _54) -&gt; [false: bb67, otherwise: bb66]"><span class="annotation">⦉68</span></span><span class="code even" style="--layer: 14" title="bb67: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:42:
+    44:12-44:42: Assign: _51 = const false
+    44:12-44:42: Goto: goto -&gt; bb69"><span class="annotation">⦉67</span></span><span class="code even" style="--layer: 13" title="bb61: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
     44:9-46:10: StorageLive: StorageLive(_49)
     44:12-44:60: StorageLive: StorageLive(_50)
     44:12-44:42: StorageLive: StorageLive(_51)
@@ -695,114 +572,70 @@
     44:12-44:21: Assign: _53 = _41
     44:12-44:25: Assign: _52 = Lt(move _53, const 1_i32)
     44:24-44:25: StorageDead: StorageDead(_53)
-    44:12-44:42: SwitchInt: switchInt(move _52) -&gt; [false: bb71, otherwise: bb69]"><span class="annotation">⦉64</span></span><span class="code even" style="--layer: 21" title="bb72: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
+    44:12-44:42: SwitchInt: switchInt(move _52) -&gt; [false: bb68, otherwise: bb66]"> || countdown != 9<span class="annotation">⦉61</span></span><span class="code even" style="--layer: 12" title="bb69: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
     44:41-44:42: StorageDead: StorageDead(_54)
     44:41-44:42: StorageDead: StorageDead(_52)
-    44:12-44:60: SwitchInt: switchInt(move _51) -&gt; [false: bb67, otherwise: bb65]"><span class="annotation">⦉72</span></span><span class="code even" style="--layer: 20" title="bb65: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
+    44:12-44:60: SwitchInt: switchInt(move _51) -&gt; [false: bb64, otherwise: bb62]"><span class="annotation">⦉69</span></span><span class="code even" style="--layer: 11" title="bb62: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
     44:12-44:60: Assign: _50 = const true
-    44:12-44:60: Goto: goto -&gt; bb68"><span class="annotation">⦉65</span></span><span class="code even" style="--layer: 19" title="bb68: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
+    44:12-44:60: Goto: goto -&gt; bb65"><span class="annotation">⦉62</span></span><span class="code even" style="--layer: 10" title="bb65: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
     44:59-44:60: StorageDead: StorageDead(_56)
     44:59-44:60: StorageDead: StorageDead(_51)
     44:12-44:60: FakeRead: FakeRead(ForMatchedPlace, _50)
-    44:9-46:10: SwitchInt: switchInt(_50) -&gt; [false: bb74, otherwise: bb73]"><span class="annotation">⦉68</span></span><span class="code even" style="--layer: 18" title="bb67: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
+    44:9-46:10: SwitchInt: switchInt(_50) -&gt; [false: bb71, otherwise: bb70]"><span class="annotation">⦉65</span></span><span class="code even" style="--layer: 9" title="bb64: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
     44:46-44:60: StorageLive: StorageLive(_56)
     44:46-44:55: StorageLive: StorageLive(_57)
     44:46-44:55: Assign: _57 = _41
     44:46-44:60: Assign: _56 = Ne(move _57, const 9_i32)
     44:59-44:60: StorageDead: StorageDead(_57)
-    44:12-44:60: SwitchInt: switchInt(move _56) -&gt; [false: bb66, otherwise: bb65]"><span class="annotation">⦉67</span></span><span class="code even" style="--layer: 17" title="bb73: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
-    44:9-46:10: FalseEdge: falseEdge -&gt; [real: bb75, imaginary: bb74]"> {</span></span>
-<span class="line"><span class="code even" style="--layer: 17" title="bb73: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
-    44:9-46:10: FalseEdge: falseEdge -&gt; [real: bb75, imaginary: bb74]">            countdown = 0;</span></span>
-<span class="line"><span class="code even" style="--layer: 17" title="bb73: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
-    44:9-46:10: FalseEdge: falseEdge -&gt; [real: bb75, imaginary: bb74]">        </span><span class="code odd" style="--layer: 18" title="bb76: ../instrument-coverage/coverage_of_if_else.rs:46:9: 47:23:
+    44:12-44:60: SwitchInt: switchInt(move _56) -&gt; [false: bb63, otherwise: bb62]"><span class="annotation">⦉64</span></span><span class="code even" style="--layer: 8" title="bb63: ../instrument-coverage/coverage_of_if_else.rs:44:12: 44:60:
+    44:12-44:60: Assign: _50 = const false
+    44:12-44:60: Goto: goto -&gt; bb65"><span class="annotation">⦉63</span></span><span class="code even" style="--layer: 7" title="bb70: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
+    44:9-46:10: FalseEdge: falseEdge -&gt; [real: bb72, imaginary: bb71]"> {</span></span>
+<span class="line"><span class="code even" style="--layer: 7" title="bb70: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
+    44:9-46:10: FalseEdge: falseEdge -&gt; [real: bb72, imaginary: bb71]">            countdown = 0;</span></span>
+<span class="line"><span class="code even" style="--layer: 7" title="bb70: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
+    44:9-46:10: FalseEdge: falseEdge -&gt; [real: bb72, imaginary: bb71]">        </span><span class="code odd" style="--layer: 8" title="bb73: ../instrument-coverage/coverage_of_if_else.rs:46:9: 47:23:
     46:9-46:10: StorageDead: StorageDead(_50)
     46:9-46:10: StorageDead: StorageDead(_49)
     47:9-47:23: Assign: _58 = CheckedSub(_41, const 5_i32)
-    47:9-47:23: Assert: assert(!move (_58.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _41, const 5_i32) -&gt; [success: bb77, unwind: bb1]"><span class="annotation">76⦊</span>}</span><span class="code odd" style="--layer: 15" title="bb75: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
+    47:9-47:23: Assert: assert(!move (_58.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _41, const 5_i32) -&gt; [success: bb74, unwind: bb78]"><span class="annotation">73⦊</span>}</span><span class="code odd" style="--layer: 5" title="bb71: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
+    44:9-46:10: Assign: _49 = const ()
+    44:9-46:10: Goto: goto -&gt; bb73"><span class="annotation">⦉71</span></span><span class="code even" style="--layer: 6" title="bb72: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
     45:13-45:26: Assign: _41 = const 0_i32
     44:61-46:10: Assign: _49 = const ()
-    44:9-46:10: Goto: goto -&gt; bb76"><span class="annotation">⦉75</span></span><span class="code even" style="--layer: 16" title="bb74: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
-    44:9-46:10: Assign: _49 = const ()
-    44:9-46:10: Goto: goto -&gt; bb76"><span class="annotation">⦉74</span></span><span class="code even" style="--layer: 17" title="bb73: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
-    44:9-46:10: FalseEdge: falseEdge -&gt; [real: bb75, imaginary: bb74]"><span class="annotation">⦉73</span></span><span class="code even" style="--layer: 17" title="bb73: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
-    44:9-46:10: FalseEdge: falseEdge -&gt; [real: bb75, imaginary: bb74]"><span class="annotation">⦉73</span></span><span class="code odd" style="--layer: 18" title="bb76: ../instrument-coverage/coverage_of_if_else.rs:46:9: 47:23:
+    44:9-46:10: Goto: goto -&gt; bb73"><span class="annotation">⦉72</span></span><span class="code even" style="--layer: 7" title="bb70: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
+    44:9-46:10: FalseEdge: falseEdge -&gt; [real: bb72, imaginary: bb71]"><span class="annotation">⦉70</span></span><span class="code even" style="--layer: 7" title="bb70: ../instrument-coverage/coverage_of_if_else.rs:44:9: 46:10:
+    44:9-46:10: FalseEdge: falseEdge -&gt; [real: bb72, imaginary: bb71]"><span class="annotation">⦉70</span></span><span class="code odd" style="--layer: 8" title="bb73: ../instrument-coverage/coverage_of_if_else.rs:46:9: 47:23:
     46:9-46:10: StorageDead: StorageDead(_50)
     46:9-46:10: StorageDead: StorageDead(_49)
     47:9-47:23: Assign: _58 = CheckedSub(_41, const 5_i32)
-    47:9-47:23: Assert: assert(!move (_58.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _41, const 5_i32) -&gt; [success: bb77, unwind: bb1]"></span></span>
-<span class="line"><span class="code odd" style="--layer: 18" title="bb76: ../instrument-coverage/coverage_of_if_else.rs:46:9: 47:23:
+    47:9-47:23: Assert: assert(!move (_58.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _41, const 5_i32) -&gt; [success: bb74, unwind: bb78]"></span></span>
+<span class="line"><span class="code odd" style="--layer: 8" title="bb73: ../instrument-coverage/coverage_of_if_else.rs:46:9: 47:23:
     46:9-46:10: StorageDead: StorageDead(_50)
     46:9-46:10: StorageDead: StorageDead(_49)
     47:9-47:23: Assign: _58 = CheckedSub(_41, const 5_i32)
-    47:9-47:23: Assert: assert(!move (_58.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _41, const 5_i32) -&gt; [success: bb77, unwind: bb1]">        countdown -= 5<span class="annotation">⦉76</span></span><span class="code even" style="--layer: 14" title="bb62: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
-    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb64, imaginary: bb63]">;</span></span>
-<span class="line"><span class="code even" style="--layer: 14" title="bb62: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
-    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb64, imaginary: bb63]">    } else {</span></span>
-<span class="line"><span class="code even" style="--layer: 14" title="bb62: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
-    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb64, imaginary: bb63]">        </span><span class="code even" style="--layer: 15" title="bb63: ../instrument-coverage/coverage_of_if_else.rs:49:9: 51:2:
-    49:9-49:15: Assign: _0 = const ()
-    50:5-50:6: StorageDead: StorageDead(_47)
-    51:1-51:2: StorageDead: StorageDead(_41)
-    51:1-51:2: StorageDead: StorageDead(_21)
-    51:1-51:2: StorageDead: StorageDead(_1)
-    51:1-51:2: StorageDead: StorageDead(_44)
-    49:9-49:15: Goto: goto -&gt; bb26"><span class="annotation">63⦊</span>return;</span></span>
-<span class="line"><span class="code even" style="--layer: 15" title="bb63: ../instrument-coverage/coverage_of_if_else.rs:49:9: 51:2:
-    49:9-49:15: Assign: _0 = const ()
-    50:5-50:6: StorageDead: StorageDead(_47)
-    51:1-51:2: StorageDead: StorageDead(_41)
-    51:1-51:2: StorageDead: StorageDead(_21)
-    51:1-51:2: StorageDead: StorageDead(_1)
-    51:1-51:2: StorageDead: StorageDead(_44)
-    49:9-49:15: Goto: goto -&gt; bb26">    }</span><span class="code odd" style="--layer: 11" title="bb61: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
+    47:9-47:23: Assert: assert(!move (_58.1: bool), &quot;attempt to compute `{} - {}`, which would overflow&quot;, _41, const 5_i32) -&gt; [success: bb74, unwind: bb78]">        countdown -= 5<span class="annotation">⦉73</span></span><span class="code even" style="--layer: 4" title="bb59: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
+    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb61, imaginary: bb60]">;</span></span>
+<span class="line"><span class="code even" style="--layer: 4" title="bb59: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
+    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb61, imaginary: bb60]">    } else {</span></span>
+<span class="line"><span class="code even" style="--layer: 4" title="bb59: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
+    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb61, imaginary: bb60]">        return;</span></span>
+<span class="line"><span class="code even" style="--layer: 4" title="bb59: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
+    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb61, imaginary: bb60]">    }<span class="annotation">⦉59</span></span><span class="code even" style="--layer: 3" title="bb58: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
     42:9-42:23: Assign: _41 = move (_46.0: i32)
     41:22-43:6: Assign: _0 = const ()
-    41:5-50:6: Goto: goto -&gt; bb78"><span class="annotation">⦉61</span></span><span class="code even" style="--layer: 12" title="bb58: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
-    41:5-50:6: FalseEdge: falseEdge -&gt; [real: bb60, imaginary: bb59]"><span class="annotation">⦉58</span></span><span class="code even" style="--layer: 13" title="bb77: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
-    47:9-47:23: Assign: _41 = move (_58.0: i32)
-    43:29-48:6: Assign: _0 = const ()
-    50:5-50:6: StorageDead: StorageDead(_47)
-    41:5-50:6: Goto: goto -&gt; bb78"><span class="annotation">⦉77</span></span><span class="code even" style="--layer: 13" title="bb77: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
+    41:5-50:6: Goto: goto -&gt; bb75"><span class="annotation">⦉58</span></span><span class="code even" style="--layer: 2" title="bb55: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
+    41:5-50:6: FalseEdge: falseEdge -&gt; [real: bb57, imaginary: bb56]"><span class="annotation">⦉55</span></span><span><span class="code odd" style="--layer: 1" title="bb74: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
     47:9-47:23: Assign: _41 = move (_58.0: i32)
     43:29-48:6: Assign: _0 = const ()
     50:5-50:6: StorageDead: StorageDead(_47)
-    41:5-50:6: Goto: goto -&gt; bb78"><span class="annotation">⦉77</span></span><span class="code even" style="--layer: 13" title="bb77: ../instrument-coverage/coverage_of_if_else.rs:41:5: 50:6:
-    47:9-47:23: Assign: _41 = move (_58.0: i32)
-    43:29-48:6: Assign: _0 = const ()
-    50:5-50:6: StorageDead: StorageDead(_47)
-    41:5-50:6: Goto: goto -&gt; bb78"><span class="annotation">⦉77</span></span><span class="code even" style="--layer: 14" title="bb62: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
-    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb64, imaginary: bb63]"><span class="annotation">⦉62</span></span><span class="code even" style="--layer: 14" title="bb62: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
-    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb64, imaginary: bb63]"><span class="annotation">⦉62</span></span><span class="code even" style="--layer: 14" title="bb62: ../instrument-coverage/coverage_of_if_else.rs:43:12: 50:6:
-    43:12-50:6: FalseEdge: falseEdge -&gt; [real: bb64, imaginary: bb63]"><span class="annotation">⦉62</span></span><span class="code even" style="--layer: 15" title="bb63: ../instrument-coverage/coverage_of_if_else.rs:49:9: 51:2:
-    49:9-49:15: Assign: _0 = const ()
-    50:5-50:6: StorageDead: StorageDead(_47)
-    51:1-51:2: StorageDead: StorageDead(_41)
-    51:1-51:2: StorageDead: StorageDead(_21)
-    51:1-51:2: StorageDead: StorageDead(_1)
-    51:1-51:2: StorageDead: StorageDead(_44)
-    49:9-49:15: Goto: goto -&gt; bb26"></span></span>
-<span class="line"><span class="code even" style="--layer: 16" title="bb78: ../instrument-coverage/coverage_of_if_else.rs:51:1: 51:2:
-    51:1-51:2: StorageDead: StorageDead(_41)
-    51:1-51:2: StorageDead: StorageDead(_21)
-    51:1-51:2: StorageDead: StorageDead(_1)
-    51:1-51:2: StorageDead: StorageDead(_44)
-    51:2-51:2: Goto: goto -&gt; bb26"><span class="annotation">78⦊</span>}<span class="annotation">⦉78</span></span><span class="code even" style="--layer: 15" title="bb63: ../instrument-coverage/coverage_of_if_else.rs:49:9: 51:2:
-    49:9-49:15: Assign: _0 = const ()
-    50:5-50:6: StorageDead: StorageDead(_47)
+    41:5-50:6: Goto: goto -&gt; bb75"><span class="annotation">⦉74</span></span></span><span class="code" style="--layer: 0"></span></span>
+<span class="line"><span><span class="code even" style="--layer: 1" title="bb75: ../instrument-coverage/coverage_of_if_else.rs:51:1: 51:2:
     51:1-51:2: StorageDead: StorageDead(_41)
     51:1-51:2: StorageDead: StorageDead(_21)
     51:1-51:2: StorageDead: StorageDead(_1)
     51:1-51:2: StorageDead: StorageDead(_44)
-    49:9-49:15: Goto: goto -&gt; bb26"><span class="annotation">⦉63</span></span><span class="code even" style="--layer: 10" title="bb38: ../instrument-coverage/coverage_of_if_else.rs:33:9: 51:2:
-    33:9-33:15: Assign: _0 = const ()
-    34:5-34:6: StorageDead: StorageDead(_28)
-    34:5-34:6: StorageDead: StorageDead(_25)
-    34:5-34:6: StorageDead: StorageDead(_24)
-    51:1-51:2: StorageDead: StorageDead(_21)
-    33:9-33:15: Goto: goto -&gt; bb27"><span class="annotation">⦉38</span></span><span class="code even" style="--layer: 5" title="bb27: ../instrument-coverage/coverage_of_if_else.rs:17:9: 51:2:
-    51:1-51:2: StorageDead: StorageDead(_1)
-    17:9-17:15: Goto: goto -&gt; bb26"><span class="annotation">⦉27</span></span><span><span class="code even" style="--layer: 1" title="bb26: ../instrument-coverage/coverage_of_if_else.rs:51:2: 51:2:
-    51:2-51:2: Return: return"><span class="annotation">26⦊</span>‸<span class="annotation">⦉26</span></span></span></span></div>
+    51:2-51:2: Goto: goto -&gt; bb77"><span class="annotation">75⦊</span>}<span class="annotation">⦉75</span></span></span><span><span class="code odd" style="--layer: 1" title="bb77: ../instrument-coverage/coverage_of_if_else.rs:51:2: 51:2:
+    51:2-51:2: Return: return"><span class="annotation">77⦊</span>‸<span class="annotation">⦉77</span></span></span></span></div>
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