[all-commits] [llvm/llvm-project] 9320a3: [MTE] [HWASan] Use LoopInfo for reachability queries.

[Florian Mayer via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 9320a32bb91bb97d9eafacacc6a4aea602da52ff
      https://github.com/llvm/llvm-project/commit/9320a32bb91bb97d9eafacacc6a4aea602da52ff
  Author: Florian Mayer <fmayer at google.com>
  Date:   2022-06-22 (Wed, 22 Jun 2022)

  Changed paths:
    M llvm/include/llvm/Transforms/Utils/MemoryTaggingSupport.h
    M llvm/lib/Target/AArch64/AArch64StackTagging.cpp
    M llvm/lib/Transforms/Instrumentation/HWAddressSanitizer.cpp
    M llvm/lib/Transforms/Utils/MemoryTaggingSupport.cpp
    A llvm/test/CodeGen/AArch64/stack-tagging-loop.ll

  Log Message:
  -----------
  [MTE] [HWASan] Use LoopInfo for reachability queries.

The reachability queries default to "reachable" after exploring too many
basic blocks. LoopInfo helps it skip over the whole loop.

Reviewed By: eugenis

Differential Revision: https://reviews.llvm.org/D127917