From adc581f5cb6bdb929b1c6a155c330151ebd3bf72 Mon Sep 17 00:00:00 2001
From: Eric Christopher <echristo@apple.com>
Date: Wed, 1 Sep 2010 17:29:10 +0000
Subject: Speculatively revert 112699 and 112702, they seem to be causing self
 host errors on clang-x86-64.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112719 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/Utils/LCSSA.cpp      |  2 +-
 lib/Transforms/Utils/SSAUpdater.cpp | 24 +++++++++++++-----------
 2 files changed, 14 insertions(+), 12 deletions(-)

(limited to 'lib/Transforms/Utils')

diff --git a/lib/Transforms/Utils/LCSSA.cpp b/lib/Transforms/Utils/LCSSA.cpp
index 275b26508f..409b4bd9da 100644
--- a/lib/Transforms/Utils/LCSSA.cpp
+++ b/lib/Transforms/Utils/LCSSA.cpp
@@ -206,7 +206,7 @@ bool LCSSA::ProcessInstruction(Instruction *Inst,
   DomTreeNode *DomNode = DT->getNode(DomBB);
 
   SSAUpdater SSAUpdate;
-  SSAUpdate.Initialize(Inst->getType(), Inst->getName());
+  SSAUpdate.Initialize(Inst);
   
   // Insert the LCSSA phi's into all of the exit blocks dominated by the
   // value, and add them to the Phi's map.
diff --git a/lib/Transforms/Utils/SSAUpdater.cpp b/lib/Transforms/Utils/SSAUpdater.cpp
index c855988307..9dc2a1ed38 100644
--- a/lib/Transforms/Utils/SSAUpdater.cpp
+++ b/lib/Transforms/Utils/SSAUpdater.cpp
@@ -29,21 +29,20 @@ static AvailableValsTy &getAvailableVals(void *AV) {
 }
 
 SSAUpdater::SSAUpdater(SmallVectorImpl<PHINode*> *NewPHI)
-  : AV(0), ProtoType(0), ProtoName(), InsertedPHIs(NewPHI) {}
+  : AV(0), PrototypeValue(0), InsertedPHIs(NewPHI) {}
 
 SSAUpdater::~SSAUpdater() {
   delete &getAvailableVals(AV);
 }
 
 /// Initialize - Reset this object to get ready for a new set of SSA
-/// updates with type 'Ty'.  PHI nodes get a name based on 'Name'.
-void SSAUpdater::Initialize(const Type *Ty, StringRef Name) {
+/// updates.  ProtoValue is the value used to name PHI nodes.
+void SSAUpdater::Initialize(Value *ProtoValue) {
   if (AV == 0)
     AV = new AvailableValsTy();
   else
     getAvailableVals(AV).clear();
-  ProtoType = Ty;
-  ProtoName = Name;
+  PrototypeValue = ProtoValue;
 }
 
 /// HasValueForBlock - Return true if the SSAUpdater already has a value for
@@ -55,8 +54,8 @@ bool SSAUpdater::HasValueForBlock(BasicBlock *BB) const {
 /// AddAvailableValue - Indicate that a rewritten value is available in the
 /// specified block with the specified value.
 void SSAUpdater::AddAvailableValue(BasicBlock *BB, Value *V) {
-  assert(ProtoType != 0 && "Need to initialize SSAUpdater");
-  assert(ProtoType == V->getType() &&
+  assert(PrototypeValue != 0 && "Need to initialize SSAUpdater");
+  assert(PrototypeValue->getType() == V->getType() &&
          "All rewritten values must have the same type");
   getAvailableVals(AV)[BB] = V;
 }
@@ -149,7 +148,7 @@ Value *SSAUpdater::GetValueInMiddleOfBlock(BasicBlock *BB) {
 
   // If there are no predecessors, just return undef.
   if (PredValues.empty())
-    return UndefValue::get(ProtoType);
+    return UndefValue::get(PrototypeValue->getType());
 
   // Otherwise, if all the merged values are the same, just use it.
   if (SingularValue != 0)
@@ -169,7 +168,9 @@ Value *SSAUpdater::GetValueInMiddleOfBlock(BasicBlock *BB) {
   }
 
   // Ok, we have no way out, insert a new one now.
-  PHINode *InsertedPHI = PHINode::Create(ProtoType, ProtoName, &BB->front());
+  PHINode *InsertedPHI = PHINode::Create(PrototypeValue->getType(),
+                                         PrototypeValue->getName(),
+                                         &BB->front());
   InsertedPHI->reserveOperandSpace(PredValues.size());
 
   // Fill in all the predecessors of the PHI.
@@ -281,14 +282,15 @@ public:
   /// GetUndefVal - Get an undefined value of the same type as the value
   /// being handled.
   static Value *GetUndefVal(BasicBlock *BB, SSAUpdater *Updater) {
-    return UndefValue::get(Updater->ProtoType);
+    return UndefValue::get(Updater->PrototypeValue->getType());
   }
 
   /// CreateEmptyPHI - Create a new PHI instruction in the specified block.
   /// Reserve space for the operands but do not fill them in yet.
   static Value *CreateEmptyPHI(BasicBlock *BB, unsigned NumPreds,
                                SSAUpdater *Updater) {
-    PHINode *PHI = PHINode::Create(Updater->ProtoType, Updater->ProtoName,
+    PHINode *PHI = PHINode::Create(Updater->PrototypeValue->getType(),
+                                   Updater->PrototypeValue->getName(),
                                    &BB->front());
     PHI->reserveOperandSpace(NumPreds);
     return PHI;
-- 
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