[all-commits] [llvm/llvm-project] 3bd9d4: [msan] Implement shadow propagation for _mm_dp_pd, ...

[Vitaly Buka via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 3bd9d4dedf11bb1d62f72e7602412db335a768d4
      https://github.com/llvm/llvm-project/commit/3bd9d4dedf11bb1d62f72e7602412db335a768d4
  Author: Vitaly Buka <vitalybuka at google.com>
  Date:   2024-06-11 (Tue, 11 Jun 2024)

  Changed paths:
    M llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp
    M llvm/test/Instrumentation/MemorySanitizer/X86/avx-intrinsics-x86.ll
    M llvm/test/Instrumentation/MemorySanitizer/X86/sse41-intrinsics-x86.ll

  Log Message:
  -----------
  [msan] Implement shadow propagation for _mm_dp_pd, _mm_dp_ps, _mm256_dp_ps (#94875)

Default intrinsic handling was to report any
uninitialized part of argument. However intrinsics
use mask which allow to ignore parts of input, so
it's OK to have vectors partially initialized.



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