[llvm] af6c699 - [TableGen] Avoid repeated hash lookups (NFC) (#126433)

[via llvm-commits]

Author: Kazu Hirata
Date: 2025-02-09T13:35:58-08:00
New Revision: af6c6992cfda195e84cbe8a0710fd3bc02082104

URL: https://github.com/llvm/llvm-project/commit/af6c6992cfda195e84cbe8a0710fd3bc02082104
DIFF: https://github.com/llvm/llvm-project/commit/af6c6992cfda195e84cbe8a0710fd3bc02082104.diff

LOG: [TableGen] Avoid repeated hash lookups (NFC) (#126433)

Added: 
    

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

Removed: 
    


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diff  --git a/llvm/utils/TableGen/Common/CodeGenSchedule.cpp b/llvm/utils/TableGen/Common/CodeGenSchedule.cpp
index e84b4fd77a6c1fe..8e8b3196c91b01d 100644
--- a/llvm/utils/TableGen/Common/CodeGenSchedule.cpp
+++ b/llvm/utils/TableGen/Common/CodeGenSchedule.cpp
@@ -413,9 +413,9 @@ void CodeGenSchedModels::collectSTIPredicates() {
   for (const Record *R : Records.getAllDerivedDefinitions("STIPredicate")) {
     const Record *Decl = R->getValueAsDef("Declaration");
 
-    const auto It = Decl2Index.find(Decl);
-    if (It == Decl2Index.end()) {
-      Decl2Index[Decl] = STIPredicates.size();
+    const auto [It, Inserted] =
+        Decl2Index.try_emplace(Decl, STIPredicates.size());
+    if (Inserted) {
       STIPredicateFunction Predicate(Decl);
       Predicate.addDefinition(R);
       STIPredicates.emplace_back(std::move(Predicate));