From 1646953538d5faf7baf49e16bd0590f822c231de Mon Sep 17 00:00:00 2001
From: Cameron Zwarich <zwarich@apple.com>
Date: Fri, 18 Feb 2011 04:58:10 +0000
Subject: Roll out r125794 to help diagnose the llvm-gcc-i386-linux-selfhost
 failure.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125830 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/SelectionDAG/LegalizeDAG.cpp         |  3 ---
 lib/CodeGen/SelectionDAG/SDNodeDbgValue.h        |  8 ++++++++
 lib/CodeGen/SelectionDAG/SelectionDAG.cpp        | 10 ++++------
 lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp |  2 +-
 4 files changed, 13 insertions(+), 10 deletions(-)

(limited to 'lib/CodeGen/SelectionDAG')

diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index 49c862c..def0c69 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -87,9 +87,6 @@ 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/lib/CodeGen/SelectionDAG/SDNodeDbgValue.h b/lib/CodeGen/SelectionDAG/SDNodeDbgValue.h
index 2dcb229..e5cd23a 100644
--- a/lib/CodeGen/SelectionDAG/SDNodeDbgValue.h
+++ b/lib/CodeGen/SelectionDAG/SDNodeDbgValue.h
@@ -83,6 +83,14 @@ 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/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index d03f676..c0aa56b 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -5508,14 +5508,12 @@ 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) {
-    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);
+    if ((*I)->getKind() == SDDbgValue::SDNODE) {
+      AddDbgValue(*I, ToNode, false);
+      (*I)->setSDNode(ToNode, To.getResNo());
     }
   }
 }
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index 452f561..fc283a3 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/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 (!V->use_empty() ) {
+      } else if (isa<PHINode>(V) && !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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