[PATCH] D110864: [llvm-profgen] Ignore branch count against outline function

Lei Wang via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Thu Sep 30 11:06:03 PDT 2021


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For some transformations like cold hot split or coro split, it can outline its part of function ranges. For profile mapping, that outline function doesn't belong to a new function. So for this case, we ignore them to accumulate the callsite samples.

For those outline function recognition, we directly check the name from the symbol table. Since `getCanonicalFnName` can filter all the alias or cloned functions, we just assume the name with `.` suffix is from the outline function.


https://reviews.llvm.org/D110864

Files:
  llvm/test/tools/llvm-profgen/Inputs/coroutine.perfbin
  llvm/test/tools/llvm-profgen/Inputs/coroutine.perfscript
  llvm/test/tools/llvm-profgen/Inputs/func-split.perfbin
  llvm/test/tools/llvm-profgen/Inputs/func-split.perfscript
  llvm/test/tools/llvm-profgen/coroutine.test
  llvm/test/tools/llvm-profgen/func-split.test
  llvm/tools/llvm-profgen/ProfileGenerator.cpp

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