[all-commits] [llvm/llvm-project] 9d65f7: [KeyInstr] Enable -gkey-instructions by default if...

[Orlando Cazalet-Hyams via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 9d65f7715995e69bf487a7c97523244c4ca5269f
      https://github.com/llvm/llvm-project/commit/9d65f7715995e69bf487a7c97523244c4ca5269f
  Author: Orlando Cazalet-Hyams <orlando.hyams at sony.com>
  Date:   2025-08-27 (Wed, 27 Aug 2025)

  Changed paths:
    M clang/lib/Driver/ToolChains/Clang.cpp
    M clang/test/DebugInfo/KeyInstructions/flag.cpp

  Log Message:
  -----------
  [KeyInstr] Enable -gkey-instructions by default if optimisations are enabled (#149509)

That's enabling Clang's -gkey-instructions, cc1's -gkey-instructions
remains off by default.

Key Instructions improves the optimized-code debug-stepping experience
in debuggers that use DWARF's `is_stmt` line table register to determine
stepping behaviour.

The feature can be disabled with -gno-key-instructions (note that the
positive and negative flag both imply -g).

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



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