[all-commits] [llvm/llvm-project] 446e21: [llvm-profgen] Use context-sensitive byte size cos...

[WenleiHe via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 446e21623c285f335714297aa14f13c21b298931
      https://github.com/llvm/llvm-project/commit/446e21623c285f335714297aa14f13c21b298931
  Author: Wenlei He <aktoon at gmail.com>
  Date:   2021-09-16 (Thu, 16 Sep 2021)

  Changed paths:
    M llvm/test/tools/llvm-profgen/cs-preinline-cost.test
    M llvm/tools/llvm-profgen/CSPreInliner.cpp

  Log Message:
  -----------
  [llvm-profgen] Use context-sensitive byte size cost for preinliner decisions by default

Turn on `use-context-cost-for-preinliner` to use context-sensitive byte size cost for preinliner decisions by default.

This is a more accurate proxy of inline cost than profile size. We tested on our large workload that it delivers measureable CPU improvement.

Differential Revision: https://reviews.llvm.org/D109893