From c2d526e4b2fa1cda43e614d80c9fc156f2874996 Mon Sep 17 00:00:00 2001
From: Anders Carlsson <andersca@mac.com>
Date: Fri, 26 Mar 2010 05:53:12 +0000
Subject: [PATCH] Don't initialize virtual pointers for primary bases, they've
 already been initialized.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99612 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/CGClass.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/lib/CodeGen/CGClass.cpp b/lib/CodeGen/CGClass.cpp
index 8a084926e7..4999d620b5 100644
--- a/lib/CodeGen/CGClass.cpp
+++ b/lib/CodeGen/CGClass.cpp
@@ -1601,6 +1601,13 @@ void CodeGenFunction::InitializeVtablePtrs(BaseSubobject Base,
     
     CXXRecordDecl *BaseDecl
       = cast<CXXRecordDecl>(I->getType()->getAs<RecordType>()->getDecl());
+
+    // We don't need to initialize vtable pointers for primary bases, unless
+    // they're virtual.
+    if (!Layout.getPrimaryBaseWasVirtual() &&
+        Layout.getPrimaryBase() == BaseDecl)
+      continue;
+
     uint64_t BaseOffset = Base.getBaseOffset() + 
       Layout.getBaseClassOffset(BaseDecl);
     
-- 
2.40.0