[all-commits] [llvm/llvm-project] b87a12: [ObjC] Encode pointers to C++ classes as "^v" if t...

[Akira Hatanaka via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b87a120820989844dc206c66bd0272b5238a14d1
      https://github.com/llvm/llvm-project/commit/b87a120820989844dc206c66bd0272b5238a14d1
  Author: Akira Hatanaka <ahatanaka at apple.com>
  Date:   2021-02-18 (Thu, 18 Feb 2021)

  Changed paths:
    M clang/include/clang/Basic/LangOptions.def
    M clang/include/clang/Driver/Options.td
    M clang/lib/AST/ASTContext.cpp
    M clang/lib/Driver/ToolChains/Clang.cpp
    M clang/test/CodeGenObjCXX/encode.mm
    A clang/test/Driver/objc-encode-cxx-class-template-spec.m

  Log Message:
  -----------
  [ObjC] Encode pointers to C++ classes as "^v" if the encoded string
would otherwise include template specialization types

This helps reduce the size of the encoded C++ type strings in the binary.

This is enabled by default only on Darwin, but can be enabled/disabled
via command line options.

rdar://63288571

Differential Revision: https://reviews.llvm.org/D96816