Move FastAccessorAssembler from RawMachineAssembler to CodeStubAssembler.

src/compiler/code-stub-assembler.h

Index: src/compiler/code-stub-assembler.h
diff --git a/src/compiler/code-stub-assembler.h b/src/compiler/code-stub-assembler.h
index 48539d8ac5840f0abb5765b1d168e5366cae6741..6f7a0706d51485a2513509863b0469cdf1d6fa08 100644
--- a/src/compiler/code-stub-assembler.h
+++ b/src/compiler/code-stub-assembler.h
@@ -142,6 +142,8 @@ class CodeStubAssembler {
   Node* ExternalConstant(ExternalReference address);
   Node* Float64Constant(double value);
   Node* HeapNumberMapConstant();
+  Node* NullConstant();
+  Node* UndefinedConstant();
 
   Node* Parameter(int value);
   void Return(Node* value);
@@ -262,9 +264,11 @@ class CodeStubAssembler {
   Node* WordIsSmi(Node* a);
 
   // Load an object pointer from a buffer that isn't in the heap.
-  Node* LoadBufferObject(Node* buffer, int offset);
+  Node* LoadBufferObject(Node* buffer, int offset,
+                         MachineType rep = MachineType::AnyTagged());
   // Load a field from an object on the heap.
-  Node* LoadObjectField(Node* object, int offset);
+  Node* LoadObjectField(Node* object, int offset,
+                        MachineType rep = MachineType::AnyTagged());
   // Load the floating point value of a HeapNumber.
   Node* LoadHeapNumberValue(Node* object);
   // Load the instance type of a Map.
@@ -326,6 +330,10 @@ class CodeStubAssembler {
  private:
   friend class CodeStubAssemblerTester;
 
+  CodeStubAssembler(Isolate* isolate, Zone* zone,
+                    CallDescriptor* call_descriptor, Code::Flags flags,
+                    const char* name);
+
   Node* CallN(CallDescriptor* descriptor, Node* code_target, Node** args);
   Node* TailCallN(CallDescriptor* descriptor, Node* code_target, Node** args);