Subzero: Use llvm::ilist<> for PhiList and AssignList.

src/IceOperand.cpp

 //===- subzero/src/IceOperand.cpp - High-level operand implementation -----===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file implements the Operand class and its target-independent
@@ skipping 275 matching lines @@
   }
 
   for (CfgNode *Node : Func->getNodes())
     addNode(Node);
 }
 
 void VariablesMetadata::addNode(CfgNode *Node) {
   if (Func->getNumVariables() >= Metadata.size())
     Metadata.resize(Func->getNumVariables());
 
-  for (InstPhi *I : Node->getPhis()) {
+  for (auto I = Node->getPhis().begin(), E = Node->getPhis().end(); I != E;
+       ++I) {
     if (I->isDeleted())
       continue;
     if (Variable *Dest = I->getDest()) {
       SizeT DestNum = Dest->getIndex();
       assert(DestNum < Metadata.size());
       Metadata[DestNum].markDef(Kind, I, Node);
     }
     for (SizeT SrcNum = 0; SrcNum < I->getSrcSize(); ++SrcNum) {
       if (const Variable *Var = llvm::dyn_cast<Variable>(I->getSrc(SrcNum))) {
         SizeT VarNum = Var->getIndex();
@@ skipping 182 matching lines @@
   if (!ALLOW_DUMP)
     return Str;
   if (W.getWeight() == RegWeight::Inf)
     Str << "Inf";
   else
     Str << W.getWeight();
   return Str;
 }
 
 } // end of namespace Ice