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[Passes] Avoid repeated hash lookups (NFC) #135542

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Merged
merged 1 commit into from
Apr 13, 2025
Merged

[Passes] Avoid repeated hash lookups (NFC) #135542

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10 changes: 4 additions & 6 deletions llvm/lib/Passes/StandardInstrumentations.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2001,14 +2001,12 @@ DotCfgDiff::DotCfgDiff(StringRef Title, const FuncDataT<DCData> &Before,
for (auto &A : After.getData()) {
StringRef Label = A.getKey();
const BlockDataT<DCData> &BD = A.getValue();
unsigned C = NodePosition.count(Label);
if (C == 0)
auto It = NodePosition.find(Label);
if (It == NodePosition.end())
// This only exists in the after IR. Create the node.
createNode(Label, BD, AfterColour);
else {
assert(C == 1 && "Unexpected multiple nodes.");
Nodes[NodePosition[Label]].setCommon(BD);
}
else
Nodes[It->second].setCommon(BD);
// Add in the edges between the nodes (as common or only in after).
for (StringMap<std::string>::const_iterator Sink = BD.getData().begin(),
E = BD.getData().end();
Expand Down