[PATCH] D67845: SSP: [3/3] cmpxchg and addrspacecast can now trigger stack protection

[Paul Robinson via Phabricator via llvm-commits]

probinson updated this revision to Diff 221347.
probinson added a comment.

HasAddressTaken now defaults to true; this means explicitly handling innocuous instructions.

- load does not store anything.
- atomicrmw cannot store a pointer unless it goes through ptrtoint, which we handle explicitly.
- ret is irrelevant because the current frame goes away after the ret.

Update test to verify those instructions do not trigger a stack protector.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D67845/new/

https://reviews.llvm.org/D67845

Files:
  llvm/lib/CodeGen/StackProtector.cpp
  llvm/test/CodeGen/X86/stack-protector-2.ll

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