[PATCH] D149252: [hwasan] fix false positive when hwasan-match-all-tag flag is enabled and short granules are used

[Mingjie Xu via Phabricator via llvm-commits]

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update


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update


When hwasan-match-all-tag flag is enabled and short granules are used, at the point checking if this is a short tag case, the tag from pointer is stored in X16 register, 
which breaks the assumption that tag from shadow memory is stored in X16 register, this will cause a false positive.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D149252

Files:
  compiler-rt/test/hwasan/TestCases/short-granule-and-match-all-tag.cpp
  llvm/lib/Target/AArch64/AArch64AsmPrinter.cpp
  llvm/test/CodeGen/AArch64/hwasan-check-memaccess.ll

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