From 384fa91deb11e7bd153fb4228ff11b1f788cbaf9 Mon Sep 17 00:00:00 2001
From: Devang Patel <dpatel@apple.com>
Date: Thu, 26 Aug 2010 20:06:46 +0000
Subject: [PATCH] Update DanglingDebugInfo so that it can be used to track
 llvm.dbg.declare also.

llvm-svn: 112213
---
 .../SelectionDAG/SelectionDAGBuilder.cpp      | 19 +++++++++++++++----
 .../SelectionDAG/SelectionDAGBuilder.h        |  8 ++++----
 2 files changed, 19 insertions(+), 8 deletions(-)

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index 15ad23de9795..a1ff8adc462a 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -875,12 +875,23 @@ void SelectionDAGBuilder::visit(unsigned Opcode, const User &I) {
 void SelectionDAGBuilder::resolveDanglingDebugInfo(const Value *V,
                                                    SDValue Val) {
   DanglingDebugInfo &DDI = DanglingDebugInfoMap[V];
-  if (DDI.getDI()) {
-    const DbgValueInst *DI = DDI.getDI();
+  MDNode *Variable = NULL;
+  uint64_t Offset = 0;
+
+  if (const DbgValueInst *DI = dyn_cast_or_null<DbgValueInst>(DDI.getDI())) {
+    Variable = DI->getVariable();
+    Offset = DI->getOffset();
+  } else if (const DbgDeclareInst *DI = 
+             dyn_cast_or_null<DbgDeclareInst>(DDI.getDI()))
+    Variable = DI->getVariable();
+  else {
+    assert (DDI.getDI() == NULL && "Invalid debug info intrinsic!");
+    return;
+  }
+
+  if (Variable) {
     DebugLoc dl = DDI.getdl();
     unsigned DbgSDNodeOrder = DDI.getSDNodeOrder();
-    MDNode *Variable = DI->getVariable();
-    uint64_t Offset = DI->getOffset();
     SDDbgValue *SDV;
     if (Val.getNode()) {
       if (!EmitFuncArgumentDbgValue(V, Variable, Offset, Val)) {
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
index 2ba88974abe9..047a05dd6711 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
@@ -36,7 +36,7 @@ class BasicBlock;
 class BitCastInst;
 class BranchInst;
 class CallInst;
-class DbgValueInst;
+class DbgInfoIntrinsic;
 class ExtractElementInst;
 class ExtractValueInst;
 class FCmpInst;
@@ -96,14 +96,14 @@ class SelectionDAGBuilder {
 
   /// DanglingDebugInfo - Helper type for DanglingDebugInfoMap.
   class DanglingDebugInfo {
-    const DbgValueInst* DI;
+    const DbgInfoIntrinsic* DI;
     DebugLoc dl;
     unsigned SDNodeOrder;
   public:
     DanglingDebugInfo() : DI(0), dl(DebugLoc()), SDNodeOrder(0) { }
-    DanglingDebugInfo(const DbgValueInst *di, DebugLoc DL, unsigned SDNO) :
+    DanglingDebugInfo(const DbgInfoIntrinsic *di, DebugLoc DL, unsigned SDNO) :
       DI(di), dl(DL), SDNodeOrder(SDNO) { }
-    const DbgValueInst* getDI() { return DI; }
+    const DbgInfoIntrinsic* getDI() { return DI; }
     DebugLoc getdl() { return dl; }
     unsigned getSDNodeOrder() { return SDNodeOrder; }
   };