[clang] d5ef2c0 - [AST] Avoid repeated hash lookups (NFC) (#123285)

[via cfe-commits]

Author: Kazu Hirata
Date: 2025-01-17T08:47:15-08:00
New Revision: d5ef2c054d26d0ad2ea8022060d5140f4b663801

URL: https://github.com/llvm/llvm-project/commit/d5ef2c054d26d0ad2ea8022060d5140f4b663801
DIFF: https://github.com/llvm/llvm-project/commit/d5ef2c054d26d0ad2ea8022060d5140f4b663801.diff

LOG: [AST] Avoid repeated hash lookups (NFC) (#123285)

Added: 
    

Modified: 
    clang/lib/AST/VTableBuilder.cpp

Removed: 
    


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diff  --git a/clang/lib/AST/VTableBuilder.cpp b/clang/lib/AST/VTableBuilder.cpp
index e941c3bedb0a7e..fa3055dd1206f4 100644
--- a/clang/lib/AST/VTableBuilder.cpp
+++ b/clang/lib/AST/VTableBuilder.cpp
@@ -3831,8 +3831,8 @@ const VirtualBaseInfo &MicrosoftVTableContext::computeVBTableRelatedInformation(
   unsigned VBTableIndex = 1 + VBI->VBTableIndices.size();
   for (const auto &VB : RD->vbases()) {
     const CXXRecordDecl *CurVBase = VB.getType()->getAsCXXRecordDecl();
-    if (!VBI->VBTableIndices.count(CurVBase))
-      VBI->VBTableIndices[CurVBase] = VBTableIndex++;
+    if (VBI->VBTableIndices.try_emplace(CurVBase, VBTableIndex).second)
+      ++VBTableIndex;
   }
 
   return *VBI;