[all-commits] [llvm/llvm-project] 8f03e1: [KeyInstr][Clang] Add Clang option -g[no-]key-inst...

[Orlando Cazalet-Hyams via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8f03e1a9d5ef4eab0a249f7007dbc1b7b9a0921a
      https://github.com/llvm/llvm-project/commit/8f03e1a9d5ef4eab0a249f7007dbc1b7b9a0921a
  Author: Orlando Cazalet-Hyams <orlando.hyams at sony.com>
  Date:   2025-05-20 (Tue, 20 May 2025)

  Changed paths:
    M clang/include/clang/Basic/DebugOptions.def
    M clang/include/clang/Driver/Options.td
    M clang/lib/Driver/ToolChains/Clang.cpp
    M clang/test/CMakeLists.txt
    A clang/test/DebugInfo/KeyInstructions/flag.cpp
    A clang/test/DebugInfo/KeyInstructions/lit.local.cfg
    M clang/test/lit.site.cfg.py.in

  Log Message:
  -----------
  [KeyInstr][Clang] Add Clang option -g[no-]key-instructions (#134627)

This needs to be driver level to pass an -mllvm flag to LLVM, though this may
change soon as the -mllvm flag will soon not be necessary.

Keep the flag help-hidden as the feature is under development.

This patch is part of a stack that teaches Clang to generate Key Instructions
metadata for C and C++.

RFC:
https://discourse.llvm.org/t/rfc-improving-is-stmt-placement-for-better-interactive-debugging/82668

The feature is only functional in LLVM if LLVM is built with CMake flag
LLVM_EXPERIMENTAL_KEY_INSTRUCTIONs. Eventually that flag will be removed.



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