remove noop landing pads in cleanup shims #47467
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These are already removed in the normal optimization pipeline - so this should slightly improve codegen performance, as these cleanup blocks are known to hurt LLVM. This un-regresses and is therefore a fix for rust-lang#47442. However, the reporter of that issue should try using `-C panic=abort` instead of carefully avoiding panics.
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remove noop landing pads in cleanup shims No-op landing pads are already removed in the normal optimization pipeline - so also removing them on the shim pipeline should slightly improve codegen performance, as these cleanup blocks are known to hurt LLVM. This un-regresses and is therefore a fix for rust-lang#47442. However, the reporter of that issue should try using `-C panic=abort` instead of carefully avoiding panics. r? @eddyb
kennytm
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remove noop landing pads in cleanup shims No-op landing pads are already removed in the normal optimization pipeline - so also removing them on the shim pipeline should slightly improve codegen performance, as these cleanup blocks are known to hurt LLVM. This un-regresses and is therefore a fix for rust-lang#47442. However, the reporter of that issue should try using `-C panic=abort` instead of carefully avoiding panics. r? @eddyb
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No-op landing pads are already removed in the normal optimization pipeline - so also removing them on the shim pipeline should slightly improve codegen performance, as these cleanup blocks are known to hurt LLVM.
This un-regresses and is therefore a fix for #47442. However, the reporter of that issue should try using
-C panic=abortinstead of carefully avoiding panics.r? @eddyb