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[CodeGen] Avoid repeated hash lookups (NFC) #129465

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Merged
merged 2 commits into from
Mar 3, 2025
Merged

[CodeGen] Avoid repeated hash lookups (NFC) #129465

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[CodeGen] Avoid repeated hash lookups (NFC)
kazutakahirata Mar 2, 2025
f6b4e03
Use lookup.
kazutakahirata Mar 3, 2025
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5 changes: 2 additions & 3 deletions llvm/lib/CodeGen/LiveDebugValues/VarLocBasedImpl.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1359,10 +1359,9 @@ void VarLocBasedLDV::removeEntryValue(const MachineInstr &MI,
return;

// Try to get non-debug instruction responsible for the DBG_VALUE.
const MachineInstr *TransferInst = nullptr;
Register Reg = MI.getDebugOperand(0).getReg();
if (Reg.isValid() && RegSetInstrs.contains(Reg))
TransferInst = RegSetInstrs.find(Reg)->second;
const MachineInstr *TransferInst =
Reg.isValid() ? RegSetInstrs.lookup(Reg) : nullptr;

// Case of the parameter's DBG_VALUE at the start of entry MBB.
if (!TransferInst && !LastNonDbgMI && MI.getParent()->isEntryBlock())
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