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[CMake] remove -fno-lifetime-dse from CAS #20292

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Merged
merged 1 commit into from
Oct 7, 2025
Merged

[CMake] remove -fno-lifetime-dse from CAS #20292

merged 1 commit into from
Oct 7, 2025
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jsji
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@jsji jsji commented Oct 7, 2025 •
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We append -fno-lifetime-dse in HandleLLVMOptions.cmake due to GCC bug
But it is causing link failure with llvm::StdThreadPool::asyncEnqueue

Remove it from libCAS.

@jsji jsji requested a review from a team as a code owner October 7, 2025 02:34
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bader commented Oct 7, 2025

This is LLVM community code. Please, push the fix to https://github.com/llvm/llvm-project/.

BTW, I noticed that 6ac6312 patch is missing in the sycl branch. Do you know why?

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jsji commented Oct 7, 2025

This is LLVM community code. Please, push the fix to https://github.com/llvm/llvm-project/.

BTW, I noticed that 6ac6312 patch is missing in the sycl branch. Do you know why?

Yes, we had to revert it because it is still causing SEGV in our build, especially in sycl-ls. sycl-ls SEGV because the GCC bug.

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jsji commented Oct 7, 2025

This is LLVM community code. Please, push the fix to https://github.com/llvm/llvm-project/.

BTW, I noticed that 6ac6312 patch is missing in the sycl branch. Do you know why?

This is not really community bug -- community code works, as they don't have the -fno-lifetime-dse in build command because of 6ac6312.

@jsji jsji merged commit e676cb0 into intel:sycl-web Oct 7, 2025
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@YuriPlyakhin YuriPlyakhin YuriPlyakhin approved these changes

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