[PATCH] D84540: [CodeGen][ObjC] Mark calls to objc_unsafeClaimAutoreleasedReturnValue as notail on x86-64

[Akira Hatanaka via Phabricator via cfe-commits]

ahatanak created this revision.
ahatanak added reviewers: rjmccall, erik.pilkington.
ahatanak added a project: clang.
Herald added subscribers: ributzka, dexonsmith, jkorous.

This is needed because the epilogue code inserted before tail calls on x86-64 breaks the handshake between the caller and callee.

Calls to objc_retainAutoreleasedReturnValue used to have the same problem, which was fixed in https://reviews.llvm.org/D59656.

rdar://problem/66029552


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D84540

Files:
  clang/lib/CodeGen/CGObjC.cpp
  clang/lib/CodeGen/TargetInfo.cpp
  clang/lib/CodeGen/TargetInfo.h
  clang/test/CodeGenObjC/arc-unsafeclaim.m

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