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[X86] Avoid repeated hash lookups (NFC) #126857

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Feb 12, 2025
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[X86] Avoid repeated hash lookups (NFC) #126857

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5 changes: 2 additions & 3 deletions llvm/lib/Target/X86/X86DomainReassignment.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -451,8 +451,8 @@ bool X86DomainReassignment::visitRegister(Closure &C, Register Reg,
}

bool X86DomainReassignment::encloseInstr(Closure &C, MachineInstr *MI) {
auto I = EnclosedInstrs.find(MI);
if (I != EnclosedInstrs.end()) {
auto [I, Inserted] = EnclosedInstrs.try_emplace(MI, C.getID());
if (!Inserted) {
if (I->second != C.getID()) {
// Instruction already belongs to another closure, avoid conflicts between
// closure and mark this closure as illegal.
Expand All @@ -462,7 +462,6 @@ bool X86DomainReassignment::encloseInstr(Closure &C, MachineInstr *MI) {
return true;
}

EnclosedInstrs[MI] = C.getID();
C.addInstruction(MI);

// Mark closure as illegal for reassignment to domains, if there is no
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