[all-commits] [llvm/llvm-project] 61647b: [Clang] Default to async unwind tables for amdgcn

[Scott Linder via All-commits]

  Branch: refs/heads/users/slinder1/11-04-_clang_default_to_async_unwind_tables_for_amdgcn
  Home:   https://github.com/llvm/llvm-project
  Commit: 61647b039cbb112e58b6a4f64ec963b4d76f366a
      https://github.com/llvm/llvm-project/commit/61647b039cbb112e58b6a4f64ec963b4d76f366a
  Author: Scott Linder <Scott.Linder at amd.com>
  Date:   2025-11-04 (Tue, 04 Nov 2025)

  Changed paths:
    M clang/lib/Driver/ToolChains/Gnu.cpp
    A clang/test/Driver/amdgpu-unwind.cl

  Log Message:
  -----------
  [Clang] Default to async unwind tables for amdgcn

To avoid codegen changes when enabling debug-info (see
https://bugs.llvm.org/show_bug.cgi?id=37240) we want to
enable unwind tables by default.

There is some pessimization in post-prologepilog scheduling, and a
general solution to the problem of CFI_INSTRUCTION-as-scheduling-barrier
should be explored.



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