[all-commits] [llvm/llvm-project] e5df9c: [CodeGen] Treat ObjC `__unsafe_unretained` and cla...

[Akira Hatanaka via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e5df9cc098b554ebb066792e40cbde6feddc57bc
      https://github.com/llvm/llvm-project/commit/e5df9cc098b554ebb066792e40cbde6feddc57bc
  Author: Akira Hatanaka <ahatanaka at apple.com>
  Date:   2022-01-11 (Tue, 11 Jan 2022)

  Changed paths:
    M clang/lib/CodeGen/CGBlocks.cpp
    M clang/lib/CodeGen/CGBlocks.h
    M clang/lib/CodeGen/CGObjCMac.cpp
    M clang/test/CodeGenObjC/arc-blocks.m
    M clang/test/CodeGenObjC/blocks.m

  Log Message:
  -----------
  [CodeGen] Treat ObjC `__unsafe_unretained` and class types as trivial
when generating copy/dispose helper functions

Analyze the block captures just once before generating copy/dispose
block helper functions and honor the inert `__unsafe_unretained`
qualifier. This refactor fixes a bug where captures of ObjC
`__unsafe_unretained` and class types were needlessly retained/released
by the copy/dispose helper functions.

Differential Revision: https://reviews.llvm.org/D116948