[all-commits] [llvm/llvm-project] ffd982: [ObjC][ARC] Fix a bug where the inline-asm retain/...

[Akira Hatanaka via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ffd982f7db58acf6653f987ca6411712feea25c3
      https://github.com/llvm/llvm-project/commit/ffd982f7db58acf6653f987ca6411712feea25c3
  Author: Akira Hatanaka <ahatanaka at apple.com>
  Date:   2020-12-18 (Fri, 18 Dec 2020)

  Changed paths:
    M llvm/lib/Transforms/ObjCARC/ObjCARCContract.cpp
    M llvm/test/Transforms/ObjCARC/contract-marker.ll

  Log Message:
  -----------
  [ObjC][ARC] Fix a bug where the inline-asm retain/claim RV marker wasn't
inserted when the original call had a 'returned' argument

The code is testing whether the instruction BBI points to is the call
that is paired up with the retainRV/claimRV call, but it doesn't work
when the call has a 'returned' argument since GetArgRCIdentityRoot looks
through 'returned' arguments.

rdar://72485383