[PATCH] D64072: MSan: handle callbr instructions

[Alexander Potapenko via Phabricator via llvm-commits]

glider created this revision.
glider added a reviewer: eugenis.
Herald added subscribers: llvm-commits, hiraditya.
Herald added a project: LLVM.

Handling callbr is very similar to handling an inline assembly call:
MSan must checks the instruction's inputs.
callbr doesn't (yet) have outputs, so there's nothing to unpoison,
and conservative assembly handling doesn't apply either.

Fixes PR42479.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D64072

Files:
  llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp
  llvm/test/Instrumentation/MemorySanitizer/msan_asm_conservative.ll

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