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[llvm-profgen] Avoid repeated hash lookups (NFC) #126467

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Merged
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Feb 10, 2025
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[llvm-profgen] Avoid repeated hash lookups (NFC) #126467

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5 changes: 3 additions & 2 deletions llvm/tools/llvm-profgen/MissingFrameInferrer.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -206,11 +206,12 @@ uint64_t MissingFrameInferrer::computeUniqueTailCallPath(

uint64_t MissingFrameInferrer::computeUniqueTailCallPath(
uint64_t From, BinaryFunction *To, SmallVectorImpl<uint64_t> &Path) {
if (!TailCallEdgesF.count(From))
auto It = TailCallEdgesF.find(From);
if (It == TailCallEdgesF.end())
return 0;
Path.push_back(From);
uint64_t NumPaths = 0;
for (auto Target : TailCallEdgesF[From]) {
for (auto Target : It->second) {
NumPaths += computeUniqueTailCallPath(Target, To, Path);
// Stop analyzing the remaining if we are already seeing more than one
// reachable paths.
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