From 3ddf70442f0653bf082bfffc03a03745f76b15e2 Mon Sep 17 00:00:00 2001
From: Devang Patel <dpatel@apple.com>
Date: Fri, 13 Nov 2009 02:27:33 +0000
Subject: Revert r87059 for now. It is failing clang tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87070 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/Analysis/DebugInfo.h |  1 +
 lib/Analysis/DebugInfo.cpp        | 14 +++++++++++---
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/include/llvm/Analysis/DebugInfo.h b/include/llvm/Analysis/DebugInfo.h
index f741416f26..b10a545b0a 100644
--- a/include/llvm/Analysis/DebugInfo.h
+++ b/include/llvm/Analysis/DebugInfo.h
@@ -467,6 +467,7 @@ namespace llvm {
     LLVMContext& VMContext;
 
     // Cached values for uniquing and faster lookups.
+    const Type *EmptyStructPtr; // "{}*".
     Function *StopPointFn;   // llvm.dbg.stoppoint
     Function *FuncStartFn;   // llvm.dbg.func.start
     Function *RegionStartFn; // llvm.dbg.region.start
diff --git a/lib/Analysis/DebugInfo.cpp b/lib/Analysis/DebugInfo.cpp
index 047837c2fb..1b58b5ed57 100644
--- a/lib/Analysis/DebugInfo.cpp
+++ b/lib/Analysis/DebugInfo.cpp
@@ -608,7 +608,9 @@ void DIVariable::dump() const {
 DIFactory::DIFactory(Module &m)
   : M(m), VMContext(M.getContext()), StopPointFn(0), FuncStartFn(0),
     RegionStartFn(0), RegionEndFn(0),
-    DeclareFn(0) {}
+    DeclareFn(0) {
+  EmptyStructPtr = PointerType::getUnqual(StructType::get(VMContext));
+}
 
 Constant *DIFactory::GetTagConstant(unsigned TAG) {
   assert((TAG & LLVMDebugVersionMask) == 0 &&
@@ -1035,7 +1037,10 @@ void DIFactory::InsertRegionEnd(DIDescriptor D, BasicBlock *BB) {
 
 /// InsertDeclare - Insert a new llvm.dbg.declare intrinsic call.
 Instruction *DIFactory::InsertDeclare(Value *Storage, DIVariable D,
-                                      Instruction *InsertBefore) {
+                              Instruction *InsertBefore) {
+  // Cast the storage to a {}* for the call to llvm.dbg.declare.
+  Storage = new BitCastInst(Storage, EmptyStructPtr, "", InsertBefore);
+
   if (!DeclareFn)
     DeclareFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_declare);
 
@@ -1045,7 +1050,10 @@ Instruction *DIFactory::InsertDeclare(Value *Storage, DIVariable D,
 
 /// InsertDeclare - Insert a new llvm.dbg.declare intrinsic call.
 Instruction *DIFactory::InsertDeclare(Value *Storage, DIVariable D,
-                                      BasicBlock *InsertAtEnd) {
+                              BasicBlock *InsertAtEnd) {
+  // Cast the storage to a {}* for the call to llvm.dbg.declare.
+  Storage = new BitCastInst(Storage, EmptyStructPtr, "", InsertAtEnd);
+
   if (!DeclareFn)
     DeclareFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_declare);
 
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