[llvm] 0575815 - [TableGen] Avoid repeated hash lookups (NFC) (#120681)

[via llvm-commits]

Author: Kazu Hirata
Date: 2024-12-20T10:28:58-08:00
New Revision: 0575815b70b486240ace728a33f756cea8fe58fa

URL: https://github.com/llvm/llvm-project/commit/0575815b70b486240ace728a33f756cea8fe58fa
DIFF: https://github.com/llvm/llvm-project/commit/0575815b70b486240ace728a33f756cea8fe58fa.diff

LOG: [TableGen] Avoid repeated hash lookups (NFC) (#120681)

Added: 
    

Modified: 
    llvm/utils/TableGen/Common/CodeGenDAGPatterns.cpp

Removed: 
    


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diff  --git a/llvm/utils/TableGen/Common/CodeGenDAGPatterns.cpp b/llvm/utils/TableGen/Common/CodeGenDAGPatterns.cpp
index 1a393beaa14f96..1a61d32b4869a4 100644
--- a/llvm/utils/TableGen/Common/CodeGenDAGPatterns.cpp
+++ b/llvm/utils/TableGen/Common/CodeGenDAGPatterns.cpp
@@ -3508,9 +3508,8 @@ void CodeGenDAGPatterns::FindPatternInputsAndOutputs(
         Val->getDef()->isSubClassOf("PointerLikeRegClass")) {
       if (Dest->getName().empty())
         I.error("set destination must have a name!");
-      if (InstResults.count(Dest->getName()))
+      if (!InstResults.insert_or_assign(Dest->getName(), Dest).second)
         I.error("cannot set '" + Dest->getName() + "' multiple times");
-      InstResults[Dest->getName()] = Dest;
     } else if (Val->getDef()->isSubClassOf("Register")) {
       InstImpResults.push_back(Val->getDef());
     } else {