[all-commits] [llvm/llvm-project] e8dcb8: [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: e8dcb853a58d5b1279ecb4182b5f9b0e41b012cc
      https://github.com/llvm/llvm-project/commit/e8dcb853a58d5b1279ecb4182b5f9b0e41b012cc
  Author: Gergely Balint <gergely.balint at arm.com>
  Date:   2025-12-04 (Thu, 04 Dec 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: 9cc76cbe6cebe3b15fdd34232a4745b92df5f902
      https://github.com/llvm/llvm-project/commit/9cc76cbe6cebe3b15fdd34232a4745b92df5f902
  Author: Gergely Balint <gergely.balint at arm.com>
  Date:   2025-12-04 (Thu, 04 Dec 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: 9561666b428d0576df3ad9a54943481656b20d77
      https://github.com/llvm/llvm-project/commit/9561666b428d0576df3ad9a54943481656b20d77
  Author: Gergely Balint <gergely.balint at arm.com>
  Date:   2025-12-04 (Thu, 04 Dec 2025)

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

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


  Commit: 8837e4d8806472f42bc375f26fc97cc9ea168b4a
      https://github.com/llvm/llvm-project/commit/8837e4d8806472f42bc375f26fc97cc9ea168b4a
  Author: Gergely Balint <gergely.balint at arm.com>
  Date:   2025-12-04 (Thu, 04 Dec 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/da2ca09d98c1...8837e4d88064

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