[all-commits] [llvm/llvm-project] 7173ae: [llvm-exegesis] Align loop MBB in loop repetitor (...

[Vitaly Buka via All-commits]

  Branch: refs/heads/users/vitalybuka/spr/msan-unwind-stack-before-fatal-reports
  Home:   https://github.com/llvm/llvm-project
  Commit: 7173ae99c0e1b13536a8492335c595f8aaee4267
      https://github.com/llvm/llvm-project/commit/7173ae99c0e1b13536a8492335c595f8aaee4267
  Author: Aiden Grossman <agrossman154 at yahoo.com>
  Date:   2024-01-08 (Mon, 08 Jan 2024)

  Changed paths:
    M llvm/tools/llvm-exegesis/lib/SnippetRepetitor.cpp

  Log Message:
  -----------
  [llvm-exegesis] Align loop MBB in loop repetitor (#77264)

This patch sets the alignment of the loob MBB in the loop repetitor to
16 to avoid instruction fetch/predecoding bottlenecks that can come up
with unaligned code. The value of 16 was chosen based on numbers for
recent Intel microarchitectures and reccomendations from Agner Fog.

Fixes #77259.


  Commit: eea627e3e3c423149cd2cd46cb6309b8d303e8bd
      https://github.com/llvm/llvm-project/commit/eea627e3e3c423149cd2cd46cb6309b8d303e8bd
  Author: Vitaly Buka <vitalybuka at google.com>
  Date:   2024-01-08 (Mon, 08 Jan 2024)

  Changed paths:
    M compiler-rt/lib/msan/msan.h
    M compiler-rt/lib/msan/msan_allocator.cpp

  Log Message:
  -----------
  [NFC][msan] Switch allocator interface to use BufferedStackTrace (#77363)

We will need it to unwind for fatal errors.


  Commit: 552d53ea25bb998e01d4b184a98e8b24d9bf8026
      https://github.com/llvm/llvm-project/commit/552d53ea25bb998e01d4b184a98e8b24d9bf8026
  Author: Vitaly Buka <vitalybuka at google.com>
  Date:   2024-01-08 (Mon, 08 Jan 2024)

  Changed paths:
    M llvm/tools/llvm-exegesis/lib/SnippetRepetitor.cpp

  Log Message:
  -----------
  rebase

Created using spr 1.3.4


Compare: https://github.com/llvm/llvm-project/compare/1de5a3d46d64...552d53ea25bb