Subzero: Implement InstList in terms of llvm::ilist<> .

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 329 matching lines @@
       if (const Variable *Var = llvm::dyn_cast<Variable>(I->getSrc(SrcNum))) {
         SizeT VarNum = Var->getIndex();
         assert(VarNum < Metadata.size());
         const bool IsFromDef = false;
         const bool IsImplicit = false;
         Metadata[VarNum].markUse(Kind, I, Node, IsFromDef, IsImplicit);
       }
     }
   }
 
-  for (Inst *I : Node->getInsts()) {
+  for (auto I = Node->getInsts().begin(), E = Node->getInsts().end(); I != E;
+       ++I) {
     if (I->isDeleted())
       continue;
     // Note: The implicit definitions (and uses) from InstFakeKill are
     // deliberately ignored.
     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) {
@@ skipping 147 matching lines @@
 
 Ostream &operator<<(Ostream &Str, const RegWeight &W) {
   if (W.getWeight() == RegWeight::Inf)
     Str << "Inf";
   else
     Str << W.getWeight();
   return Str;
 }
 
 } // end of namespace Ice