[all-commits] [llvm/llvm-project] 3e68a6: [BPI][NFC] Reuse post dominantor tree from analysi...

[ebrevnov via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 3e68a667047d1541e445c8f47501d69f5b1a497d
      https://github.com/llvm/llvm-project/commit/3e68a667047d1541e445c8f47501d69f5b1a497d
  Author: Evgeniy Brevnov <evgueni.brevnov at gmail.com>
  Date:   2020-04-30 (Thu, 30 Apr 2020)

  Changed paths:
    M llvm/include/llvm/Analysis/BranchProbabilityInfo.h
    M llvm/include/llvm/Analysis/LazyBranchProbabilityInfo.h
    M llvm/lib/Analysis/BranchProbabilityInfo.cpp
    M llvm/lib/Analysis/OptimizationRemarkEmitter.cpp
    M llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp
    M llvm/lib/Transforms/Scalar/LoopPredication.cpp
    M llvm/test/CodeGen/AArch64/O3-pipeline.ll
    M llvm/test/CodeGen/ARM/O3-pipeline.ll
    M llvm/test/CodeGen/X86/O3-pipeline.ll
    M llvm/test/Other/new-pm-thinlto-postlink-pgo-defaults.ll
    M llvm/test/Other/new-pm-thinlto-postlink-samplepgo-defaults.ll
    M llvm/test/Other/new-pm-thinlto-prelink-pgo-defaults.ll
    M llvm/test/Other/new-pm-thinlto-prelink-samplepgo-defaults.ll
    M llvm/test/Other/opt-O2-pipeline.ll
    M llvm/test/Other/opt-O3-pipeline.ll
    M llvm/test/Other/opt-Os-pipeline.ll
    M llvm/test/Transforms/SCCP/preserve-analysis.ll

  Log Message:
  -----------
  [BPI][NFC] Reuse post dominantor tree from analysis manager when available

Summary: Currenlty BPI unconditionally creates post dominator tree each time. While this is not incorrect we can save compile time by reusing existing post dominator tree (when it's valid) provided by analysis manager.

Reviewers: skatkov, taewookoh, yrouban

Reviewed By: skatkov

Subscribers: hiraditya, steven_wu, dexonsmith, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D78987