VTA cmake change to include Verilator header for building tsim library (

apache#8797)

* VTA cmake file require Verilator include for tsim target. VTA module.cc uses svOpenArrayHandle to send wide data through DPI

* Refactor Verialtor check conditions

* Build TSIM only for CPU target. CPU target don't use -Werror to compile with Verilator. Jenkinsfile to have tvm_multilib_tsim defined for CPU build target.

* remove build/libvta_tsim.so from non tsim targeting builds

* Revert to enable TSIM build i386. Revert to -Werror in CPU config. Remove verilator CPP objects from cmake config for tsim and put them as include into vta module.cc to avoid Verilator compilation warnings

Jenkinsfile

@@ -73,10 +73,12 @@ tvm_runtime = "build/libtvm_runtime.so, build/config.cmake"
 tvm_lib = "build/libtvm.so, " + tvm_runtime
 // LLVM upstream lib
 tvm_multilib = "build/libtvm.so, " +
-               "build/libvta_tsim.so, " +
                "build/libvta_fsim.so, " +
                tvm_runtime
 
+tvm_multilib_tsim = "build/libvta_tsim.so, " +
+               tvm_multilib
+
 // command to start a docker container
 docker_run = 'docker/bash.sh'
 // timeout in minutes
@@ -218,7 +220,7 @@ stage('Build') {
         init_git()
         sh "${docker_run} ${ci_cpu} ./tests/scripts/task_config_build_cpu.sh"
         make(ci_cpu, 'build', '-j2')
-        pack_lib('cpu', tvm_multilib)
+        pack_lib('cpu', tvm_multilib_tsim)
         timeout(time: max_time, unit: 'MINUTES') {
           sh "${docker_run} ${ci_cpu} ./tests/scripts/task_ci_setup.sh"
           sh "${docker_run} ${ci_cpu} ./tests/scripts/task_python_unittest.sh"
@@ -252,7 +254,7 @@ stage('Build') {
         init_git()
         sh "${docker_run} ${ci_i386} ./tests/scripts/task_config_build_i386.sh"
         make(ci_i386, 'build', '-j2')
-        pack_lib('i386', tvm_multilib)
+        pack_lib('i386', tvm_multilib_tsim)
       }
     }
   },

cmake/modules/VTA.cmake

@@ -73,6 +73,17 @@ elseif(PYTHON)
 
   # Cycle accurate simulator driver build
   if(USE_VTA_TSIM)
+    if(DEFINED ENV{VERILATOR_INC_DIR})
+      set(VERILATOR_INC_DIR $ENV{VERILATOR_INC_DIR})
+    elseif (EXISTS /usr/local/share/verilator/include)
+      set(VERILATOR_INC_DIR /usr/local/share/verilator/include)
+    elseif (EXISTS /usr/share/verilator/include)
+      set(VERILATOR_INC_DIR /usr/share/verilator/include)
+    else()
+      message(STATUS "Verilator not found in /usr/local/share/verilator/include")
+      message(STATUS "Verilator not found in /usr/share/verilator/include")
+      message(FATAL_ERROR "Cannot find Verilator, VERILATOR_INC_DIR is not defined")
+    endif()
     # Add tsim driver sources
     file(GLOB TSIM_RUNTIME_SRCS ${VTA_HW_PATH}/src/*.cc)
     file(GLOB TSIM_RUNTIME_SRCS vta/runtime/*.cc)
@@ -81,7 +92,7 @@ elseif(PYTHON)
     list(APPEND TSIM_RUNTIME_SRCS ${VTA_HW_PATH}/src/vmem/virtual_memory.cc)
     # Target lib: vta_tsim
     add_library(vta_tsim SHARED ${TSIM_RUNTIME_SRCS})
-    target_include_directories(vta_tsim SYSTEM PUBLIC ${VTA_HW_PATH}/include)
+    target_include_directories(vta_tsim SYSTEM PUBLIC ${VTA_HW_PATH}/include ${VERILATOR_INC_DIR} ${VERILATOR_INC_DIR}/vltstd)
     target_compile_definitions(vta_tsim PUBLIC DMLC_USE_LOGGING_LIBRARY=<tvm/runtime/logging.h>)
     foreach(__def ${VTA_DEFINITIONS})
       string(SUBSTRING ${__def} 3 -1 __strip_def)

tests/scripts/task_config_build_arm.sh

@@ -31,7 +31,6 @@ echo set\(USE_PROFILER ON\) >> config.cmake
 echo set\(USE_LLVM llvm-config-8\) >> config.cmake
 echo set\(CMAKE_CXX_COMPILER g++\) >> config.cmake
 echo set\(CMAKE_CXX_FLAGS -Werror\) >> config.cmake
-echo set\(USE_VTA_TSIM ON\) >> config.cmake
 echo set\(USE_VTA_FSIM ON\) >> config.cmake
 echo set\(USE_ARM_COMPUTE_LIB ON\) >> config.cmake
 echo set\(USE_ARM_COMPUTE_LIB_GRAPH_EXECUTOR "/opt/acl"\) >> config.cmake

tests/scripts/task_config_build_gpu.sh

@@ -38,7 +38,6 @@ echo set\(USE_GRAPH_EXECUTOR ON\) >> config.cmake
 echo set\(USE_STACKVM_RUNTIME ON\) >> config.cmake
 echo set\(USE_PROFILER ON\) >> config.cmake
 echo set\(USE_ANTLR ON\) >> config.cmake
-echo set\(USE_VTA_TSIM ON\) >> config.cmake
 echo set\(USE_VTA_FSIM ON\) >> config.cmake
 echo set\(USE_BLAS openblas\) >> config.cmake
 echo set\(CMAKE_CXX_COMPILER g++\) >> config.cmake

tests/scripts/task_config_build_i386.sh

@@ -31,8 +31,8 @@ echo set\(USE_PROFILER ON\) >> config.cmake
 echo set\(USE_LLVM llvm-config-4.0\) >> config.cmake
 echo set\(CMAKE_CXX_COMPILER g++\) >> config.cmake
 echo set\(CMAKE_CXX_FLAGS -Werror\) >> config.cmake
-echo set\(USE_VTA_TSIM ON\) >> config.cmake
 echo set\(USE_VTA_FSIM ON\) >> config.cmake
+echo set\(USE_VTA_TSIM ON\) >> config.cmake
 echo set\(USE_VERILATOR ON\) >> config.cmake
 echo set\(USE_CCACHE OFF\) >> config.cmake
 

tests/scripts/task_config_build_wasm.sh

@@ -32,6 +32,5 @@ echo set\(USE_ANTLR ON\) >> config.cmake
 echo set\(CMAKE_CXX_COMPILER g++\) >> config.cmake
 echo set\(CMAKE_CXX_FLAGS -Werror\) >> config.cmake
 echo set\(HIDE_PRIVATE_SYMBOLS ON\) >> config.cmake
-echo set\(USE_VTA_TSIM ON\) >> config.cmake
 echo set\(USE_VTA_FSIM ON\) >> config.cmake
 echo set\(USE_CCACHE OFF\) >> config.cmake