[all-commits] [llvm/llvm-project] 5a72a1: Precommit LTO pipeline test

[Sanne Wouda via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 5a72a1623e4afd9365a13473079db1ec66af1f0e
      https://github.com/llvm/llvm-project/commit/5a72a1623e4afd9365a13473079db1ec66af1f0e
  Author: Sanne Wouda <Sanne.Wouda at arm.com>
  Date:   2020-11-03 (Tue, 03 Nov 2020)

  Changed paths:
    A llvm/test/Other/opt-LTO-pipeline.ll

  Log Message:
  -----------
  Precommit LTO pipeline test


  Commit: 6e80318eecde2639faa1e72be045c78b8b8aedad
      https://github.com/llvm/llvm-project/commit/6e80318eecde2639faa1e72be045c78b8b8aedad
  Author: Sanne Wouda <Sanne.Wouda at arm.com>
  Date:   2020-11-03 (Tue, 03 Nov 2020)

  Changed paths:
    M llvm/lib/Transforms/IPO/PassManagerBuilder.cpp
    M llvm/test/Other/opt-LTO-pipeline.ll

  Log Message:
  -----------
  Add loop distribution to the LTO pipeline

The LoopDistribute pass is missing from the LTO pipeline, so
-enable-loop-distribute has no effect during post-link. The pre-link
loop distribution doesn't seem to survive the LTO pipeline either.

With this patch (and -flto -mllvm -enable-loop-distribute) we see a 43%
uplift on SPEC 2006 hmmer for AArch64. The rest of SPECINT 2006 is
unaffected.

Differential Revision: https://reviews.llvm.org/D89896


Compare: https://github.com/llvm/llvm-project/compare/f35a82384d9e...6e80318eecde