https://github.com/kazutakahirata created
https://github.com/llvm/llvm-project/pull/123285
None
>From 1baa9c7445a6e65a6c9086994e728db463fe6a5f Mon Sep 17 00:00:00 2001
From: Kazu Hirata <k...@google.com>
Date: Thu, 16 Jan 2025 09:56:31 -0800
Subject: [PATCH] [AST] Avoid repeated hash lookups (NFC)
---
clang/lib/AST/VTableBuilder.cpp | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
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;
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