[all-commits] [llvm/llvm-project] 0d9563: [msan] Handle llvm.[us]cmp (starship operator) (#1...

[Thurston Dang via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 0d95631a3adbc4343e6bfbcecc53ac8f1f0739d1
      https://github.com/llvm/llvm-project/commit/0d95631a3adbc4343e6bfbcecc53ac8f1f0739d1
  Author: Thurston Dang <thurston at google.com>
  Date:   2025-02-12 (Wed, 12 Feb 2025)

  Changed paths:
    M llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp
    M llvm/test/Instrumentation/MemorySanitizer/scmp.ll
    M llvm/test/Instrumentation/MemorySanitizer/ucmp.ll

  Log Message:
  -----------
  [msan] Handle llvm.[us]cmp (starship operator) (#125804)

Apply handleShadowOr to llvm.[us]cmp. Previously, llvm.[su]cmp was correctly handled heuristically when each parameter type is the same as the return type (e.g., `call i8 @llvm.ucmp.i8.i8(i8 %x, i8 %y)`) but handled incorrectly by visitInstruction when the return type is different e.g., (`call i8 @llvm.ucmp.i8.i62(i62 %x, i62 %y)`, `call <4 x i8> @llvm.ucmp.v4i8.v4i32(<4 x i32> %x, <4 x i32> %y)`).

Updates the tests from https://github.com/llvm/llvm-project/pull/125790



To unsubscribe from these emails, change your notification settings at https://github.com/llvm/llvm-project/settings/notifications