Subzero: Prototype to simplify makereg calls

src/IceTargetLoweringMIPS32.cpp

Index: src/IceTargetLoweringMIPS32.cpp
diff --git a/src/IceTargetLoweringMIPS32.cpp b/src/IceTargetLoweringMIPS32.cpp
index e34dd5d86c675ed01d2129c57e1aaa0bb63088f3..a6cf273ef46e1e246dddd98dc00f97316e06b920 100644
--- a/src/IceTargetLoweringMIPS32.cpp
+++ b/src/IceTargetLoweringMIPS32.cpp
@@ -599,10 +599,7 @@ void TargetMIPS32::lowerInt64Arithmetic(const InstArithmetic *Instr,
     llvm::report_fatal_error("Unknown arithmetic operator");
     return;
   case InstArithmetic::Add: {
-    Variable *T_Carry = makeReg(IceType_i32);
-    Variable *T_Lo = makeReg(IceType_i32);
-    Variable *T_Hi = makeReg(IceType_i32);
-    Variable *T_Hi2 = makeReg(IceType_i32);
+    auto *T_Carry=I32Reg(), *T_Lo=I32Reg(), *T_Hi=I32Reg(), *T_Hi2=I32Reg();
     _addu(T_Lo, Src0LoR, Src1LoR);
     _mov(DestLo, T_Lo);
     _sltu(T_Carry, T_Lo, Src0LoR);
@@ -612,8 +609,7 @@ void TargetMIPS32::lowerInt64Arithmetic(const InstArithmetic *Instr,
     return;
   }
   case InstArithmetic::And: {
-    Variable *T_Lo = makeReg(IceType_i32);
-    Variable *T_Hi = makeReg(IceType_i32);
+    auto *T_Lo=I32Reg(), *T_Hi=I32Reg();
     _and(T_Lo, Src0LoR, Src1LoR);
     _mov(DestLo, T_Lo);
     _and(T_Hi, Src0HiR, Src1HiR);
@@ -621,10 +617,7 @@ void TargetMIPS32::lowerInt64Arithmetic(const InstArithmetic *Instr,
     return;
   }
   case InstArithmetic::Sub: {
-    Variable *T_Borrow = makeReg(IceType_i32);
-    Variable *T_Lo = makeReg(IceType_i32);
-    Variable *T_Hi = makeReg(IceType_i32);
-    Variable *T_Hi2 = makeReg(IceType_i32);
+    auto *T_Borrow=I32Reg(), *T_Lo=I32Reg(), *T_Hi=I32Reg(), *T_Hi2=I32Reg();
     _subu(T_Lo, Src0LoR, Src1LoR);
     _mov(DestLo, T_Lo);
     _sltu(T_Borrow, Src0LoR, Src1LoR);
@@ -634,8 +627,7 @@ void TargetMIPS32::lowerInt64Arithmetic(const InstArithmetic *Instr,
     return;
   }
   case InstArithmetic::Or: {
-    Variable *T_Lo = makeReg(IceType_i32);
-    Variable *T_Hi = makeReg(IceType_i32);
+    auto *T_Lo=I32Reg(), *T_Hi=I32Reg();
     _or(T_Lo, Src0LoR, Src1LoR);
     _mov(DestLo, T_Lo);
     _or(T_Hi, Src0HiR, Src1HiR);
@@ -643,8 +635,7 @@ void TargetMIPS32::lowerInt64Arithmetic(const InstArithmetic *Instr,
     return;
   }
   case InstArithmetic::Xor: {
-    Variable *T_Lo = makeReg(IceType_i32);
-    Variable *T_Hi = makeReg(IceType_i32);
+    auto *T_Lo=I32Reg(), *T_Hi=I32Reg();
     _xor(T_Lo, Src0LoR, Src1LoR);
     _mov(DestLo, T_Lo);
     _xor(T_Hi, Src0HiR, Src1HiR);
@@ -765,8 +756,7 @@ void TargetMIPS32::lowerAssign(const InstAssign *Instr) {
     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);
+    auto *T_Lo=I32Reg(), *T_Hi=I32Reg();
     _mov(T_Lo, Src0Lo);
     _mov(DestLo, T_Lo);
     _mov(T_Hi, Src0Hi);