From 6172f0298391e00cb669cc246e70ae2531f2cdec Mon Sep 17 00:00:00 2001
From: David Blaikie <dblaikie@gmail.com>
Date: Mon, 25 Feb 2013 01:07:18 +0000
Subject: [PATCH] DIBuilder: support structs with vtable pointers in the same
 way as classes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176004 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/DIBuilder.h | 10 ++++++----
 lib/IR/DIBuilder.cpp     | 20 ++++++++++++--------
 2 files changed, 18 insertions(+), 12 deletions(-)

diff --git a/include/llvm/DIBuilder.h b/include/llvm/DIBuilder.h
index 5efbb9ef5b0..d59847558a1 100644
--- a/include/llvm/DIBuilder.h
+++ b/include/llvm/DIBuilder.h
@@ -282,10 +282,12 @@ namespace llvm {
     /// @param Flags        Flags to encode member attribute, e.g. private
     /// @param Elements     Struct elements.
     /// @param RunTimeLang  Optional parameter, Objective-C runtime version.
-    DIType createStructType(DIDescriptor Scope, StringRef Name, DIFile File,
-                            unsigned LineNumber, uint64_t SizeInBits,
-                            uint64_t AlignInBits, unsigned Flags,
-                            DIArray Elements, unsigned RunTimeLang = 0);
+    DICompositeType createStructType(DIDescriptor Scope, StringRef Name,
+                                     DIFile File, unsigned LineNumber,
+                                     uint64_t SizeInBits, uint64_t AlignInBits,
+                                     unsigned Flags, DIType DerivedFrom,
+                                     DIArray Elements, unsigned RunTimeLang = 0,
+                                     MDNode *VTableHolder = 0);
 
     /// createUnionType - Create debugging information entry for an union.
     /// @param Scope        Scope in which this union is defined.
diff --git a/lib/IR/DIBuilder.cpp b/lib/IR/DIBuilder.cpp
index bab30e4ef14..f31e531d47f 100644
--- a/lib/IR/DIBuilder.cpp
+++ b/lib/IR/DIBuilder.cpp
@@ -508,11 +508,15 @@ DIType DIBuilder::createClassType(DIDescriptor Context, StringRef Name,
 }
 
 /// createStructType - Create debugging information entry for a struct.
-DIType DIBuilder::createStructType(DIDescriptor Context, StringRef Name,
-                                   DIFile File, unsigned LineNumber,
-                                   uint64_t SizeInBits, uint64_t AlignInBits,
-                                   unsigned Flags, DIArray Elements,
-                                   unsigned RunTimeLang) {
+DICompositeType DIBuilder::createStructType(DIDescriptor Context,
+                                            StringRef Name, DIFile File,
+                                            unsigned LineNumber,
+                                            uint64_t SizeInBits,
+                                            uint64_t AlignInBits,
+                                            unsigned Flags, DIType DerivedFrom,
+                                            DIArray Elements,
+                                            unsigned RunTimeLang,
+                                            MDNode *VTableHolder) {
  // TAG_structure_type is encoded in DICompositeType format.
   Value *Elts[] = {
     GetTagConstant(VMContext, dwarf::DW_TAG_structure_type),
@@ -524,13 +528,13 @@ DIType DIBuilder::createStructType(DIDescriptor Context, StringRef Name,
     ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
     ConstantInt::get(Type::getInt32Ty(VMContext), 0),
     ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
-    NULL,
+    DerivedFrom,
     Elements,
     ConstantInt::get(Type::getInt32Ty(VMContext), RunTimeLang),
-    NULL,
+    VTableHolder,
     NULL,
   };
-  return DIType(MDNode::get(VMContext, Elts));
+  return DICompositeType(MDNode::get(VMContext, Elts));
 }
 
 /// createUnionType - Create debugging information entry for an union.