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

src/compiler/raw-machine-assembler.h

 // 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.
 
 #ifndef V8_COMPILER_RAW_MACHINE_ASSEMBLER_H_
 #define V8_COMPILER_RAW_MACHINE_ASSEMBLER_H_
 
 #include "src/compiler/common-operator.h"
 #include "src/compiler/graph-builder.h"
 #include "src/compiler/linkage.h"
@@ skipping 284 matching lines @@
   Node* Int64GreaterThanOrEqual(Node* a, Node* b) {
     return Int64LessThanOrEqual(b, a);
   }
   Node* Uint64Div(Node* a, Node* b) {
     return NewNode(machine()->Uint64Div(), a, b);
   }
   Node* Uint64Mod(Node* a, Node* b) {
     return NewNode(machine()->Uint64Mod(), a, b);
   }
 
-  // TODO(turbofan): What is this used for?
-  Node* ConvertIntPtrToInt32(Node* a) {
-    return kPointerSize == 8 ? NewNode(machine()->TruncateInt64ToInt32(), a)
-                             : a;
-  }
-  Node* ConvertInt32ToIntPtr(Node* a) {
-    return kPointerSize == 8 ? NewNode(machine()->ChangeInt32ToInt64(), a) : a;
-  }
-
 #define INTPTR_BINOP(prefix, name)                     \
   Node* IntPtr##name(Node* a, Node* b) {               \
     return kPointerSize == 8 ? prefix##64##name(a, b)  \
                              : prefix##32##name(a, b); \
   }
 
   INTPTR_BINOP(Int, Add);
   INTPTR_BINOP(Int, Sub);
   INTPTR_BINOP(Int, LessThan);
   INTPTR_BINOP(Int, LessThanOrEqual);
@@ skipping 123 matching lines @@
   Node* Float64InsertHighWord32(Node* a, Node* b) {
     return NewNode(machine()->Float64InsertHighWord32(), a, b);
   }
 
   // Stack operations.
   Node* LoadStackPointer() { return NewNode(machine()->LoadStackPointer()); }
 
   // Parameters.
   Node* Parameter(size_t index);
 
+  // Pointer utilities.
+  Node* LoadFromPointer(void* address, MachineType rep, int32_t offset = 0) {
+    return Load(rep, PointerConstant(address), Int32Constant(offset));
+  }
+  void StoreToPointer(void* address, MachineType rep, Node* node) {
+    Store(rep, PointerConstant(address), node);
+  }
+  Node* StringConstant(const char* string) {
+    return HeapConstant(isolate()->factory()->InternalizeUtf8String(string));
+  }
+
   // Control flow.
   Label* Exit();
   void Goto(Label* label);
   void Branch(Node* condition, Label* true_val, Label* false_val);
   void Switch(Node* index, Label* default_label, int32_t* case_values,
               Label** case_labels, size_t case_count);
   // Call through CallFunctionStub with lazy deopt and frame-state.
   Node* CallFunctionStub0(Node* function, Node* receiver, Node* context,
                           Node* frame_state, CallFunctionFlags flags);
   // Call to a JS function with zero parameters.
@@ skipping 46 matching lines @@
   BasicBlock* current_block_;
 
   DISALLOW_COPY_AND_ASSIGN(RawMachineAssembler);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_RAW_MACHINE_ASSEMBLER_H_