Subzero: Use "auto" per (unwritten) auto coding style.

src/IceConverter.cpp

 //===- subzero/src/IceConverter.cpp - Converts LLVM to Ice  ---------------===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 688 matching lines @@
 LLVM2ICEGlobalsConverter::convertGlobalsToIce(Module *Mod) {
   std::unique_ptr<Ice::VariableDeclarationList> VariableDeclarations(
       new Ice::VariableDeclarationList);
   for (Module::const_global_iterator I = Mod->global_begin(),
                                      E = Mod->global_end();
        I != E; ++I) {
 
     const GlobalVariable *GV = I;
 
     Ice::GlobalDeclaration *Var = getConverter().getGlobalDeclaration(GV);
-    Ice::VariableDeclaration *VarDecl = cast<Ice::VariableDeclaration>(Var);
+    auto *VarDecl = cast<Ice::VariableDeclaration>(Var);
     VariableDeclarations->push_back(VarDecl);
 
     if (!GV->hasInternalLinkage() && GV->hasInitializer()) {
       std::string Buffer;
       raw_string_ostream StrBuf(Buffer);
       StrBuf << "Can't define external global declaration: " << GV->getName();
       report_fatal_error(StrBuf.str());
     }
 
     if (!GV->hasInitializer()) {
@@ skipping 137 matching lines @@
   // Install function declarations.
   for (const Function &Func : *Mod) {
     FuncSigType Signature;
     FunctionType *FuncType = Func.getFunctionType();
     Signature.setReturnType(
         Converter.convertToIceType(FuncType->getReturnType()));
     for (size_t I = 0; I < FuncType->getNumParams(); ++I) {
       Signature.appendArgType(
           Converter.convertToIceType(FuncType->getParamType(I)));
     }
-    FunctionDeclaration *IceFunc = FunctionDeclaration::create(
+    auto *IceFunc = FunctionDeclaration::create(
         Ctx, Signature, Func.getCallingConv(), Func.getLinkage(), Func.empty());
     IceFunc->setName(Func.getName());
     if (!IceFunc->verifyLinkageCorrect(Ctx)) {
       std::string Buffer;
       raw_string_ostream StrBuf(Buffer);
       StrBuf << "Function " << IceFunc->getName()
              << " has incorrect linkage: " << IceFunc->getLinkageName();
       if (IceFunc->isExternal())
         StrBuf << "\n  Use flag -allow-externally-defined-symbols to override";
       report_fatal_error(StrBuf.str());
     }
     GlobalDeclarationMap[&Func] = IceFunc;
   }
   // Install global variable declarations.
   for (Module::const_global_iterator I = Mod->global_begin(),
                                      E = Mod->global_end();
        I != E; ++I) {
     const GlobalVariable *GV = I;
-    VariableDeclaration *Var = VariableDeclaration::create(Ctx);
+    auto *Var = VariableDeclaration::create(Ctx);
     Var->setName(GV->getName());
     Var->setAlignment(GV->getAlignment());
     Var->setIsConstant(GV->isConstant());
     Var->setLinkage(GV->getLinkage());
     if (!Var->verifyLinkageCorrect(Ctx)) {
       std::string Buffer;
       raw_string_ostream StrBuf(Buffer);
       StrBuf << "Global " << Var->getName()
              << " has incorrect linkage: " << Var->getLinkageName();
       if (Var->isExternal())
@@ skipping 21 matching lines @@
       Ctx->pushTimer(TimerID, StackID);
     }
     LLVM2ICEFunctionConverter FunctionConverter(*this);
     FunctionConverter.convertFunction(&I);
     if (TimeThisFunction)
       Ctx->popTimer(TimerID, StackID);
   }
 }
 
 } // end of namespace Ice