[PATCH] D107901: [hwasan] Prevent reordering of tag checks.

[Evgenii Stepanov via Phabricator via llvm-commits]

eugenis added a comment.

I find this program useful to test aliasing behavior:

  void zzz(long *x) {
    x[0] = 42;
    x[1] = 42;
  }

With `-fno-slp-vectorize` it generates store - check - store sequence where two stores can be merged into store-pair (see AArch64LoadStoreOptimizer) if hwasan check is not mayLoadOrStore.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D107901/new/

https://reviews.llvm.org/D107901