[llvm] 530fe60 - [IR] Avoid repeated hash lookups (NFC) (#120848)

[via llvm-commits]

Author: Kazu Hirata
Date: 2024-12-21T17:41:01-08:00
New Revision: 530fe60bf8e94702541c581e7bc54a6031cd6f1e

URL: https://github.com/llvm/llvm-project/commit/530fe60bf8e94702541c581e7bc54a6031cd6f1e
DIFF: https://github.com/llvm/llvm-project/commit/530fe60bf8e94702541c581e7bc54a6031cd6f1e.diff

LOG: [IR] Avoid repeated hash lookups (NFC) (#120848)

Added: 
    

Modified: 
    llvm/include/llvm/IR/ModuleSummaryIndex.h

Removed: 
    


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diff  --git a/llvm/include/llvm/IR/ModuleSummaryIndex.h b/llvm/include/llvm/IR/ModuleSummaryIndex.h
index 2a05c2ac0758c0..3c586a1dd21d82 100644
--- a/llvm/include/llvm/IR/ModuleSummaryIndex.h
+++ b/llvm/include/llvm/IR/ModuleSummaryIndex.h
@@ -1711,10 +1711,9 @@ class ModuleSummaryIndex {
                        GlobalValue::GUID OrigGUID) {
     if (OrigGUID == 0 || ValueGUID == OrigGUID)
       return;
-    if (OidGuidMap.count(OrigGUID) && OidGuidMap[OrigGUID] != ValueGUID)
-      OidGuidMap[OrigGUID] = 0;
-    else
-      OidGuidMap[OrigGUID] = ValueGUID;
+    auto [It, Inserted] = OidGuidMap.try_emplace(OrigGUID, ValueGUID);
+    if (!Inserted && It->second != ValueGUID)
+      It->second = 0;
   }
 
   /// Find the summary for ValueInfo \p VI in module \p ModuleId, or nullptr if