Add MachineSignature, which is an encapsulation of the machine types for parameters and return valu…

test/cctest/compiler/test-simplified-lowering.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 <limits>
 
 #include "src/compiler/control-builders.h"
 #include "src/compiler/generic-node-inl.h"
 #include "src/compiler/graph-visualizer.h"
 #include "src/compiler/node-properties-inl.h"
@@ skipping 54 matching lines @@
 
 FieldAccess ForJSObjectProperties() {
   FieldAccess access = {kTaggedBase, JSObject::kPropertiesOffset,
                         Handle<Name>(), Type::Any(), kMachAnyTagged};
   return access;
 }
 
 
 FieldAccess ForArrayBufferBackingStore() {
   FieldAccess access = {
-      kTaggedBase,                           JSArrayBuffer::kBackingStoreOffset,
-      Handle<Name>(),                        Type::UntaggedPtr(),
-      MachineOperatorBuilder::pointer_rep(),
+      kTaggedBase,         JSArrayBuffer::kBackingStoreOffset, Handle<Name>(),
+      Type::UntaggedPtr(), kMachPtr,
   };
   return access;
 }
 
 
 ElementAccess ForFixedArrayElement() {
   ElementAccess access = {kTaggedBase, FixedArray::kHeaderSize, Type::Any(),
                           kMachAnyTagged};
   return access;
 }
@@ skipping 1253 matching lines @@
 
   Node* store = t.graph()->NewNode(t.simplified()->StoreField(access), t.p0,
                                    t.p1, t.start, t.start);
   t.Effect(store);
   t.Lower();
 
   CHECK_EQ(IrOpcode::kStore, store->opcode());
   CHECK_EQ(t.p0, store->InputAt(0));
   CheckChangeOf(IrOpcode::kChangeTaggedToFloat64, t.p1, store->InputAt(2));
 }