From 0a2e0976d60264724b9a1e39d3f63660c94b607d Mon Sep 17 00:00:00 2001
From: Argyrios Kyrtzidis <akyrtzi@gmail.com>
Date: Tue, 19 Oct 2010 18:06:47 +0000
Subject: [PATCH] Minor optimization; if we have a CXXRecordDecl we can get the
 definition decl directly without iterating over the redeclarations.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@116837 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/AST/Decl.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/AST/Decl.cpp b/lib/AST/Decl.cpp
index e822009c58..4898d6f2fc 100644
--- a/lib/AST/Decl.cpp
+++ b/lib/AST/Decl.cpp
@@ -1580,6 +1580,8 @@ void TagDecl::completeDefinition() {
 TagDecl* TagDecl::getDefinition() const {
   if (isDefinition())
     return const_cast<TagDecl *>(this);
+  if (const CXXRecordDecl *CXXRD = dyn_cast<CXXRecordDecl>(this))
+    return CXXRD->getDefinition();
 
   for (redecl_iterator R = redecls_begin(), REnd = redecls_end();
        R != REnd; ++R)
-- 
2.40.0