[turbofan] Make MachineType a pair of enums.

test/cctest/compiler/test-jump-threading.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/instruction.h"
 #include "src/compiler/instruction-codes.h"
 #include "src/compiler/jump-threading.h"
 #include "test/cctest/cctest.h"
 
 namespace v8 {
@@ skipping 39 matching lines @@
     return pos;
   }
   void Nop() {
     Start();
     sequence_.AddInstruction(Instruction::New(main_zone(), kArchNop));
   }
   void RedundantMoves() {
     Start();
     sequence_.AddInstruction(Instruction::New(main_zone(), kArchNop));
     int index = static_cast<int>(sequence_.instructions().size()) - 1;
-    AddGapMove(index,
-               AllocatedOperand(LocationOperand::REGISTER, kRepWord32, 13),
-               AllocatedOperand(LocationOperand::REGISTER, kRepWord32, 13));
+    AddGapMove(index, AllocatedOperand(LocationOperand::REGISTER,
+                                       MachineRepresentation::kWord32, 13),
+               AllocatedOperand(LocationOperand::REGISTER,
+                                MachineRepresentation::kWord32, 13));
   }
   void NonRedundantMoves() {
     Start();
     sequence_.AddInstruction(Instruction::New(main_zone(), kArchNop));
     int index = static_cast<int>(sequence_.instructions().size()) - 1;
     AddGapMove(index, ConstantOperand(11),
-               AllocatedOperand(LocationOperand::REGISTER, kRepWord32, 11));
+               AllocatedOperand(LocationOperand::REGISTER,
+                                MachineRepresentation::kWord32, 11));
   }
   void Other() {
     Start();
     sequence_.AddInstruction(Instruction::New(main_zone(), 155));
   }
   void End() {
     Start();
     sequence_.EndBlock(current_->rpo_number());
     current_ = NULL;
     rpo_number_ = RpoNumber::FromInt(rpo_number_.ToInt() + 1);
@@ skipping 677 matching lines @@
         for (int k = 4; k < 5; k++) assembly[k]--;
       }
       CheckAssemblyOrder(code, 5, assembly);
     }
   }
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8