Fast codegen: Implement with.

src/x64/fast-codegen-x64.cc

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1653 matching lines @@
 
 
 void FastCodeGenerator::VisitThisFunction(ThisFunction* expr) {
   __ movq(rax, Operand(rbp, JavaScriptFrameConstants::kFunctionOffset));
   Move(expr->context(), rax);
 }
 
 
 Register FastCodeGenerator::result_register() { return rax; }
 
+
+Register FastCodeGenerator::context_register() { return rsi; }
+
+
+void FastCodeGenerator::StoreFrameField(int frame_offset, Register value) {
+  ASSERT_EQ(POINTER_SIZE_ALIGN(frame_offset),
+            static_cast<intptr_t>(frame_offset));
+  __ movq(Operand(rbp, frame_offset), value);
+}
+
+
+void FastCodeGenerator::LoadContextField(Register dst, int context_index) {
+  __ movq(dst, Operand(context_register(), Context::SlotOffset(context_index)));
+}
+
+
 // ----------------------------------------------------------------------------
 // Non-local control flow support.
 
 
 void FastCodeGenerator::EnterFinallyBlock() {
   ASSERT(!result_register().is(rdx));
   ASSERT(!result_register().is(rcx));
   // Cook return address on top of stack (smi encoded Code* delta)
   __ movq(rdx, Operand(rsp, 0));
   __ Move(rcx, masm_->CodeObject());
@@ skipping 23 matching lines @@
 
 void FastCodeGenerator::ThrowException() {
   __ push(result_register());
   __ CallRuntime(Runtime::kThrow, 1);
 }
 
 #undef __
 
 
 } }  // namespace v8::internal