[all-commits] [llvm/llvm-project] 32dc79: [ObjC][ARC] Do not perform code motion on precise ...

[Akira Hatanaka via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 32dc79c5efedf06e67daab75249a28e1bc5b889d
      https://github.com/llvm/llvm-project/commit/32dc79c5efedf06e67daab75249a28e1bc5b889d
  Author: Akira Hatanaka <ahatanaka at apple.com>
  Date:   2021-02-15 (Mon, 15 Feb 2021)

  Changed paths:
    M llvm/lib/Transforms/ObjCARC/ObjCARCOpts.cpp
    M llvm/lib/Transforms/ObjCARC/PtrState.cpp
    M llvm/lib/Transforms/ObjCARC/PtrState.h
    M llvm/test/Transforms/ObjCARC/basic.ll
    M llvm/test/Transforms/ObjCARC/code-motion.ll

  Log Message:
  -----------
  [ObjC][ARC] Do not perform code motion on precise release calls

This fixes a bug where an object can get deallocated before reaching the
end of its full formal lifetime.

rdar://72110887
rdar://74123176