[llvm-bugs] [Bug 217830] -O2 and -O3 generate 4~10x slower code than -Os with flags "-mavx512f -mavx512bw" (or equivalently -march=znver5)

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Fri Aug 21 00:11:25 PDT 2026

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Previous message: [llvm-bugs] [Bug 217826] [Clang][Vulkan] llvm_unreachable failure in SPIRVLegalizePointerCast for WavePrefixProduct tests.
Next message: [llvm-bugs] [Bug 217831] Interlocked Or resources int64 test failing: `Failed to store to aggregate`
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