[all-commits] [llvm/llvm-project] 0deeda: [hwasan] Prevent reordering of tag checks.

[Florian Mayer via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 0deedaa23f71587d121a5ffab40571fd4a64599a
      https://github.com/llvm/llvm-project/commit/0deedaa23f71587d121a5ffab40571fd4a64599a
  Author: Florian Mayer <fmayer at google.com>
  Date:   2021-08-17 (Tue, 17 Aug 2021)

  Changed paths:
    M llvm/include/llvm/IR/Intrinsics.td
    A llvm/test/Instrumentation/HWAddressSanitizer/memaccess-clobber.ll

  Log Message:
  -----------
  [hwasan] Prevent reordering of tag checks.

They were previously unconstrained, which allowed them to be reordered
before the shadow memory write.

Reviewed By: eugenis

Differential Revision: https://reviews.llvm.org/D107901