[TableGen] Avoid repeated hash lookups (NFC)

[kazutakahirata]

No description provided.

[llvmbot]

@llvm/pr-subscribers-tablegen

Author: Kazu Hirata (kazutakahirata)

Changes

---

Full diff: https://github.com/llvm/llvm-project/pull/126190.diff

1 Files Affected:

• (modified) llvm/utils/TableGen/AsmWriterEmitter.cpp (+1-2)

diff --git a/llvm/utils/TableGen/AsmWriterEmitter.cpp b/llvm/utils/TableGen/AsmWriterEmitter.cpp
index e7606b9df4626b1..795185c677e3020 100644
--- a/llvm/utils/TableGen/AsmWriterEmitter.cpp
+++ b/llvm/utils/TableGen/AsmWriterEmitter.cpp
@@ -967,12 +967,11 @@ void AsmWriterEmitter::EmitPrintAliasInstruction(raw_ostream &O) {
             IAP.addOperand(ROName, MIOpNum, PrintMethodIdx);
 
             // There might be an additional predicate on the MCOperand
-            unsigned Entry = MCOpPredicateMap[Rec];
+            unsigned &Entry = MCOpPredicateMap[Rec];
             if (!Entry) {
               if (!Rec->isValueUnset("MCOperandPredicate")) {
                 MCOpPredicates.push_back(Rec);
                 Entry = MCOpPredicates.size();
-                MCOpPredicateMap[Rec] = Entry;
               } else
                 break; // No conditions on this operand at all
             }