[llvm] bcb0c3a - [CodeGen] Avoid repeated hash lookups (NFC) (#129465)

[via llvm-commits]

Author: Kazu Hirata
Date: 2025-03-03T07:27:16-08:00
New Revision: bcb0c3a2917156e313dc5258fce0890a951ebabf

URL: https://github.com/llvm/llvm-project/commit/bcb0c3a2917156e313dc5258fce0890a951ebabf
DIFF: https://github.com/llvm/llvm-project/commit/bcb0c3a2917156e313dc5258fce0890a951ebabf.diff

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

Added: 
    

Modified: 
    llvm/lib/CodeGen/LiveDebugValues/VarLocBasedImpl.cpp

Removed: 
    


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diff  --git a/llvm/lib/CodeGen/LiveDebugValues/VarLocBasedImpl.cpp b/llvm/lib/CodeGen/LiveDebugValues/VarLocBasedImpl.cpp
index 94e7f1b734fd1..f7150f96b625d 100644
--- a/llvm/lib/CodeGen/LiveDebugValues/VarLocBasedImpl.cpp
+++ b/llvm/lib/CodeGen/LiveDebugValues/VarLocBasedImpl.cpp
@@ -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())