Revert r87059 for now. It is failing clang tests.

llvm-svn: 87070

2 files changed, 12 insertions, 3 deletions

diff --git a/llvm/include/llvm/Analysis/DebugInfo.h b/llvm/include/llvm/Analysis/DebugInfo.h
index f741416f265..b10a545b0ae 100644
--- a/llvm/include/llvm/Analysis/DebugInfo.h
+++ b/llvm/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/llvm/lib/Analysis/DebugInfo.cpp b/llvm/lib/Analysis/DebugInfo.cpp
index 047837c2fb2..1b58b5ed57f 100644
--- a/llvm/lib/Analysis/DebugInfo.cpp
+++ b/llvm/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);