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[BOLT] Avoid repeated set lookups (NFC) #112157

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Merged
merged 1 commit into from
Oct 14, 2024
Merged

[BOLT] Avoid repeated set lookups (NFC) #112157

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6 changes: 2 additions & 4 deletions bolt/lib/Passes/Instrumentation.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -109,9 +109,8 @@ static bool hasAArch64ExclusiveMemop(
BinaryBasicBlock *BB = BBQueue.front().first;
bool IsLoad = BBQueue.front().second;
BBQueue.pop();
if (Visited.find(BB) != Visited.end())
if (!Visited.insert(BB).second)
continue;
Visited.insert(BB);

for (const MCInst &Inst : *BB) {
// Two loads one after another - skip whole function
Expand All @@ -126,8 +125,7 @@ static bool hasAArch64ExclusiveMemop(
if (BC.MIB->isAArch64ExclusiveLoad(Inst))
IsLoad = true;

if (IsLoad && BBToSkip.find(BB) == BBToSkip.end()) {
BBToSkip.insert(BB);
if (IsLoad && BBToSkip.insert(BB).second) {
if (opts::Verbosity >= 2) {
outs() << "BOLT-INSTRUMENTER: skip BB " << BB->getName()
<< " due to exclusive instruction in function "
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