From f922a431ee3dfd4fad2b20578989e29874fe97c3 Mon Sep 17 00:00:00 2001
From: Devang Patel <dpatel@apple.com>
Date: Thu, 17 Feb 2011 23:33:27 +0000
Subject: Do not lose debug info of an inlined function argument even if the
 argument is only used through GEPs.

llvm-svn: 125794
---
 llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp         |  3 +++
 llvm/lib/CodeGen/SelectionDAG/SDNodeDbgValue.h        |  8 --------
 llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp        | 10 ++++++----
 llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp |  2 +-
 4 files changed, 10 insertions(+), 13 deletions(-)

(limited to 'llvm/lib/CodeGen')

diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index def0c69f229..49c862ce3e0 100644
--- a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -87,6 +87,9 @@ class SelectionDAGLegalize {
     // If someone requests legalization of the new node, return itself.
     if (From != To)
       LegalizedNodes.insert(std::make_pair(To, To));
+    
+    // Transfer SDDbgValues.
+    DAG.TransferDbgValues(From, To);
   }
 
 public:
diff --git a/llvm/lib/CodeGen/SelectionDAG/SDNodeDbgValue.h b/llvm/lib/CodeGen/SelectionDAG/SDNodeDbgValue.h
index e5cd23a6c9f..2dcb2295732 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SDNodeDbgValue.h
+++ b/llvm/lib/CodeGen/SelectionDAG/SDNodeDbgValue.h
@@ -83,14 +83,6 @@ public:
   // Returns the SDNode* for a register ref
   SDNode *getSDNode() { assert (kind==SDNODE); return u.s.Node; }
 
-  // setSDNode - If underlying SDNode is replaced by another node then
-  // SelectionDAG can use this to transfer DbgValue.
-  void setSDNode(SDNode *N, unsigned R) { 
-    assert (kind==SDNODE); 
-    u.s.Node = N; 
-    u.s.ResNo = R;
-  }
-
   // Returns the ResNo for a register ref
   unsigned getResNo() { assert (kind==SDNODE); return u.s.ResNo; }
 
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index c0aa56b5225..d03f6765d54 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -5508,12 +5508,14 @@ void SelectionDAG::TransferDbgValues(SDValue From, SDValue To) {
   SDNode *FromNode = From.getNode();
   SDNode *ToNode = To.getNode();
   SmallVector<SDDbgValue*,2> &DVs = GetDbgValues(FromNode);
-  DbgInfo->removeSDDbgValues(FromNode);
   for (SmallVector<SDDbgValue *, 2>::iterator I = DVs.begin(), E = DVs.end();
        I != E; ++I) {
-    if ((*I)->getKind() == SDDbgValue::SDNODE) {
-      AddDbgValue(*I, ToNode, false);
-      (*I)->setSDNode(ToNode, To.getResNo());
+    SDDbgValue *Dbg = *I;
+    if (Dbg->getKind() == SDDbgValue::SDNODE) {
+      SDDbgValue *Clone = getDbgValue(Dbg->getMDPtr(), ToNode, To.getResNo(),
+                                      Dbg->getOffset(), Dbg->getDebugLoc(),
+                                      Dbg->getOrder());
+      AddDbgValue(Clone, ToNode, false);
     }
   }
 }
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index fc283a36223..452f5614b7b 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -4287,7 +4287,7 @@ SelectionDAGBuilder::visitIntrinsicCall(const CallInst &I, unsigned Intrinsic) {
                                 N.getResNo(), Offset, dl, SDNodeOrder);
           DAG.AddDbgValue(SDV, N.getNode(), false);
         }
-      } else if (isa<PHINode>(V) && !V->use_empty() ) {
+      } else if (!V->use_empty() ) {
         // Do not call getValue(V) yet, as we don't want to generate code.
         // Remember it for later.
         DanglingDebugInfo DDI(&DI, dl, SDNodeOrder);
-- 
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