[all-commits] [llvm/llvm-project] 97dc50: [BOLT] Match functions with name similarity (#95884)

[Shaw Young via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 97dc50882cbc63d7098e95f73f242185c75c226b
      https://github.com/llvm/llvm-project/commit/97dc50882cbc63d7098e95f73f242185c75c226b
  Author: Shaw Young <58664393+shawbyoung at users.noreply.github.com>
  Date:   2024-07-03 (Wed, 03 Jul 2024)

  Changed paths:
    M bolt/docs/CommandLineArgumentReference.md
    M bolt/include/bolt/Profile/YAMLProfileReader.h
    M bolt/lib/Profile/YAMLProfileReader.cpp
    A bolt/test/X86/name-similarity-function-matching.test

  Log Message:
  -----------
  [BOLT] Match functions with name similarity (#95884)

A mapping - from namespace to associated binary functions - is used to
match function profiles to binary based on the
'--name-similarity-function-matching-threshold' flag set edit distance
threshold. The flag is set to 0 (exact name matching) by default as it is
expensive, requiring the processing of all BFs.

Test Plan: Added name-similarity-function-matching.test. On a binary
with 5M functions, rewrite passes took ~520s without the flag and
~2018s with the flag set to 20.



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