Subzero: Fix build errors with LLVM trunk.

src/IceCfg.cpp

 //===- subzero/src/IceCfg.cpp - Control flow graph implementation ---------===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 810 matching lines @@
   // 1.0. When t0 does not get a register, introducing an extra assignment
   // statement does not make sense. The relevant portion is marked below.
 
   TimerMarker _(TimerStack::TT_floatConstantCse, this);
   for (CfgNode *Node : getNodes()) {
 
     CfgUnorderedMap<Constant *, Variable *> ConstCache;
     auto Current = Node->getInsts().begin();
     auto End = Node->getInsts().end();
     while (Current != End) {
-      CfgUnorderedMap<Constant *, CfgVector<Inst *>> FloatUses;
+      CfgUnorderedMap<Constant *, CfgVector<InstList::iterator>> FloatUses;
       if (llvm::isa<InstCall>(iteratorToInst(Current))) {
         ++Current;
         assert(Current != End);
         // Block should not end with a call
       }
       while (Current != End && !llvm::isa<InstCall>(iteratorToInst(Current))) {
         for (SizeT i = 0; i < Current->getSrcSize(); ++i) {
           if (auto *Const = llvm::dyn_cast<Constant>(Current->getSrc(i))) {
             if (Const->getType() == IceType_f32 ||
                 Const->getType() == IceType_f64) {
@@ skipping 19 matching lines @@
           Insts.insert(Pair.second[0], Assign);
           ConstCache[Pair.first] = NewVar;
         }
 
         auto *NewVar = makeVariable(Pair.first->getType());
         NewVar->setLinkedTo(ConstCache[Pair.first]);
         auto *Assign =
             InstAssign::create(Node->getCfg(), NewVar, ConstCache[Pair.first]);
 
         Insts.insert(Pair.second[0], Assign);
-        for (auto *InstUse : Pair.second) {
+        for (auto InstUse : Pair.second) {
           for (SizeT i = 0; i < InstUse->getSrcSize(); ++i) {
             if (auto *Const = llvm::dyn_cast<Constant>(InstUse->getSrc(i))) {
               if (Const == Pair.first) {
                 InstUse->replaceSource(i, NewVar);
               }
             }
           }
         }
       }
     }
@@ skipping 979 matching lines @@
     }
   }
   // Print each basic block
   for (CfgNode *Node : Nodes)
     Node->dump(this);
   if (isVerbose(IceV_Instructions))
     Str << "}\n";
 }
 
 } // end of namespace Ice