[turbofan] Clean up cctest "framework" for dealing with native calls.

test/cctest/compiler/test-run-machops.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 <cmath>
 #include <functional>
 #include <limits>
 
 #include "src/base/bits.h"
 #include "src/base/utils/random-number-generator.h"
@@ skipping 4377 matching lines @@
   static const int kInputSize = 10;
   int32_t inputs[kInputSize];
   int32_t outputs[kInputSize];
   for (int i = 0; i < kInputSize; i++) {
     inputs[i] = i;
     outputs[i] = -1;
   }
   RawMachineAssemblerTester<int32_t*> m;
   Node* input = m.PointerConstant(&inputs[0]);
   Node* output = m.PointerConstant(&outputs[kInputSize - 1]);
-  Node* elem_size = m.ConvertInt32ToIntPtr(m.Int32Constant(sizeof(inputs[0])));
+  Node* elem_size = m.IntPtrConstant(sizeof(inputs[0]));
   for (int i = 0; i < kInputSize; i++) {
     m.Store(kMachInt32, output, m.Load(kMachInt32, input));
     input = m.IntPtrAdd(input, elem_size);
     output = m.IntPtrSub(output, elem_size);
   }
   m.Return(input);
   CHECK_EQ(&inputs[kInputSize], m.Call());
   for (int i = 0; i < kInputSize; i++) {
     CHECK_EQ(i, inputs[i]);
     CHECK_EQ(kInputSize - i - 1, outputs[i]);
@@ skipping 733 matching lines @@
   m.Return(m.Int32Constant(0));
   for (size_t i = 0; i < arraysize(kValues); ++i) {
     input = kValues[i];
     CHECK_EQ(0, m.Call());
     double expected = round(kValues[i]);
     CHECK_EQ(expected, result);
   }
 }
 
 #endif  // V8_TURBOFAN_TARGET