[all-commits] [llvm/llvm-project] 67cf01: Reland^2 "[BOLT] Parallelize legacy profile merging"

[Yi Kong via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 67cf01bd37273af5041ba07e2c57b55fcbf287cb
      https://github.com/llvm/llvm-project/commit/67cf01bd37273af5041ba07e2c57b55fcbf287cb
  Author: Yi Kong <yikong at google.com>
  Date:   2023-05-22 (Mon, 22 May 2023)

  Changed paths:
    M bolt/tools/merge-fdata/merge-fdata.cpp

  Log Message:
  -----------
  Reland^2 "[BOLT] Parallelize legacy profile merging"

Resovled the issue that when number of tasks is fewer than cores, we end
up creating as many threads as the number of cores, making the
performance worse than the single thread version.