[all-commits] [llvm/llvm-project] 296a95: [BOLT] Match functions with call graph (#98125)

[Shaw Young via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 296a9563690f2fea78e4d746a6d1896262b69da4
      https://github.com/llvm/llvm-project/commit/296a9563690f2fea78e4d746a6d1896262b69da4
  Author: Shaw Young <58664393+shawbyoung at users.noreply.github.com>
  Date:   2024-07-19 (Fri, 19 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/match-functions-with-call-graph.test

  Log Message:
  -----------
  [BOLT] Match functions with call graph (#98125)

Implemented call graph function matching. First, two call graphs are
constructed for both profiled and binary functions. Then functions are
hashed based on the names of their callee/caller functions. Finally,
functions are matched based on these neighbor hashes and the 
longest common prefix of their names. The `match-with-call-graph` 
flag turns this matching on.

Test Plan: Added match-with-call-graph.test. Matched 164 functions 
in a large binary with 10171 profiled functions.



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