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[Coroutines] Avoid repeated hash lookups (NFC) #127956

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Merged
merged 1 commit into from
Feb 20, 2025
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[Coroutines] Avoid repeated hash lookups (NFC) #127956

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5 changes: 3 additions & 2 deletions llvm/lib/Transforms/Coroutines/MaterializationUtils.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -293,7 +293,8 @@ void coro::doRematerializations(
for (Instruction *U : E.second) {
// Don't process a user twice (this can happen if the instruction uses
// more than one rematerializable def)
if (AllRemats.count(U))
auto [It, Inserted] = AllRemats.try_emplace(U);
if (!Inserted)
continue;

// Constructor creates the whole RematGraph for the given Use
Expand All @@ -306,7 +307,7 @@ void coro::doRematerializations(
++I) { (*I)->Node->dump(); } dbgs()
<< "\n";);

AllRemats[U] = std::move(RematUPtr);
It->second = std::move(RematUPtr);
}
}

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