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

src/IceTargetLoweringMIPS32.cpp

 //===- subzero/src/IceTargetLoweringMIPS32.cpp - MIPS32 lowering ----------===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 513 matching lines @@
   (void)Inst;
   UnimplementedError(Func->getContext()->getFlags());
 }
 
 void TargetMIPS32::lowerArithmetic(const InstArithmetic *Inst) {
   Variable *Dest = Inst->getDest();
   Operand *Src0 = legalizeUndef(Inst->getSrc(0));
   Operand *Src1 = legalizeUndef(Inst->getSrc(1));
   if (Dest->getType() == IceType_i64) {
     // TODO(reed kotler): fakedef needed for now until all cases are implemented
-    Variable *DestLo = llvm::cast<Variable>(loOperand(Dest));
-    Variable *DestHi = llvm::cast<Variable>(hiOperand(Dest));
+    auto *DestLo = llvm::cast<Variable>(loOperand(Dest));
+    auto *DestHi = llvm::cast<Variable>(hiOperand(Dest));
     Context.insert(InstFakeDef::create(Func, DestLo));
     Context.insert(InstFakeDef::create(Func, DestHi));
     UnimplementedError(Func->getContext()->getFlags());
     return;
   }
   if (isVectorType(Dest->getType())) {
     Context.insert(InstFakeDef::create(Func, Dest));
     UnimplementedError(Func->getContext()->getFlags());
     return;
   }
@@ skipping 63 matching lines @@
 }
 
 void TargetMIPS32::lowerAssign(const InstAssign *Inst) {
   Variable *Dest = Inst->getDest();
   Operand *Src0 = Inst->getSrc(0);
   assert(Dest->getType() == Src0->getType());
   if (Dest->getType() == IceType_i64) {
     Src0 = legalizeUndef(Src0);
     Operand *Src0Lo = legalize(loOperand(Src0), Legal_Reg);
     Operand *Src0Hi = legalize(hiOperand(Src0), Legal_Reg);
-    Variable *DestLo = llvm::cast<Variable>(loOperand(Dest));
-    Variable *DestHi = llvm::cast<Variable>(hiOperand(Dest));
+    auto *DestLo = llvm::cast<Variable>(loOperand(Dest));
+    auto *DestHi = llvm::cast<Variable>(hiOperand(Dest));
     // Variable *T_Lo = nullptr, *T_Hi = nullptr;
     Variable *T_Lo = makeReg(IceType_i32);
     Variable *T_Hi = makeReg(IceType_i32);
     _mov(T_Lo, Src0Lo);
     _mov(DestLo, T_Lo);
     _mov(T_Hi, Src0Hi);
     _mov(DestHi, T_Hi);
   } else {
     Operand *SrcR;
     if (Dest->hasReg()) {
@@ skipping 443 matching lines @@
   Ostream &Str = Ctx->getStrEmit();
   Str << "\t.set\tnomicromips\n";
   Str << "\t.set\tnomips16\n";
 }
 
 llvm::SmallBitVector TargetMIPS32::TypeToRegisterSet[IceType_NUM];
 llvm::SmallBitVector TargetMIPS32::RegisterAliases[RegMIPS32::Reg_NUM];
 llvm::SmallBitVector TargetMIPS32::ScratchRegs;
 
 } // end of namespace Ice