[all-commits] [llvm/llvm-project] 764c88: [SanitizerBinaryMetadata] Pretend compiler-generat...

[Marco Elver via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 764c88a50ac76a2df2d051a0eb5badc6867aabb6
      https://github.com/llvm/llvm-project/commit/764c88a50ac76a2df2d051a0eb5badc6867aabb6
  Author: Marco Elver <elver at google.com>
  Date:   2023-01-31 (Tue, 31 Jan 2023)

  Changed paths:
    M llvm/lib/Transforms/Instrumentation/SanitizerBinaryMetadata.cpp
    A llvm/test/Instrumentation/SanitizerBinaryMetadata/pretend-atomic-access.ll

  Log Message:
  -----------
  [SanitizerBinaryMetadata] Pretend compiler-generated loads/stores are atomic

Profiling and GCOV generate known data-racy loads/stores. Pretend they
are atomic so that analysis using PC-keyed metadata for atomics do not
report them as data races (which would look like false positives).

Reviewed By: dvyukov

Differential Revision: https://reviews.llvm.org/D142982