[all-commits] [llvm/llvm-project] 2c96dc: [BOLT][PAC] Warn about synchronous unwind tables

[Gergely Bálint via All-commits]

  Branch: refs/heads/users/bgergely0/bolt-warn-on-sync-unw
  Home:   https://github.com/llvm/llvm-project
  Commit: 2c96dce71ce7f1f74592d21a07ac09c6697569e2
      https://github.com/llvm/llvm-project/commit/2c96dce71ce7f1f74592d21a07ac09c6697569e2
  Author: Gergely Balint <gergely.balint at arm.com>
  Date:   2025-11-24 (Mon, 24 Nov 2025)

  Changed paths:
    M bolt/lib/Passes/PointerAuthCFIAnalyzer.cpp
    A bolt/test/runtime/AArch64/pacret-synchronous-unwind.cpp

  Log Message:
  -----------
  [BOLT][PAC] Warn about synchronous unwind tables

BOLT currently ignores functions with synchronous PAuth DWARF info.
When more than 10% of functions get ignored for inconsistencies, we
should emit a warning to only use asynchronous unwind tables.

See also: #165215


  Commit: ec1c5ce2601d2b816b78889f1061df11f560825a
      https://github.com/llvm/llvm-project/commit/ec1c5ce2601d2b816b78889f1061df11f560825a
  Author: Gergely Balint <gergely.balint at arm.com>
  Date:   2025-11-24 (Mon, 24 Nov 2025)

  Changed paths:
    M bolt/lib/Passes/PointerAuthCFIAnalyzer.cpp
    M bolt/test/AArch64/pacret-cfi-incorrect.s

  Log Message:
  -----------
  [BOLT] Use opts::Verbosity in PointerAuthCFIAnalyzer


  Commit: dc85e484f6d5d36162adf92e251887e270c1fd0d
      https://github.com/llvm/llvm-project/commit/dc85e484f6d5d36162adf92e251887e270c1fd0d
  Author: Gergely Balint <gergely.balint at arm.com>
  Date:   2025-11-24 (Mon, 24 Nov 2025)

  Changed paths:
    M bolt/lib/Passes/PointerAuthCFIAnalyzer.cpp

  Log Message:
  -----------
  [BOLT] Add comment about the chosen threshold


  Commit: e25002a26fe7a6b1fd01f0d587a32a0cbd3a0cad
      https://github.com/llvm/llvm-project/commit/e25002a26fe7a6b1fd01f0d587a32a0cbd3a0cad
  Author: Gergely Balint <gergely.balint at arm.com>
  Date:   2025-11-24 (Mon, 24 Nov 2025)

  Changed paths:
    M bolt/lib/Passes/PointerAuthCFIAnalyzer.cpp

  Log Message:
  -----------
  [BOLT] PointerAuthCFIAnalyzer: return early if there is no work

- makes sure we do not divide by zero, to calculate the % of ignored
  functions.


Compare: https://github.com/llvm/llvm-project/compare/b892645720ac...e25002a26fe7

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