In class Function replace current code field with current instruction field, that way we save one l…

runtime/vm/intermediate_language_x64.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_X64.
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/intermediate_language.h"
 
 #include "vm/dart_entry.h"
@@ skipping 5727 matching lines @@
 void ClosureCallInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   // Arguments descriptor is expected in R10.
   intptr_t argument_count = ArgumentCount();
   const Array& arguments_descriptor =
       Array::ZoneHandle(ArgumentsDescriptor::New(argument_count,
                                                  argument_names()));
   __ LoadObject(R10, arguments_descriptor, PP);
 
   // Function in RAX.
   ASSERT(locs()->in(0).reg() == RAX);
-  __ movq(RCX, FieldAddress(RAX, Function::code_offset()));
+  __ movq(RCX, FieldAddress(RAX, Function::instructions_offset()));
 
   // RAX: Function.
   // R10: Arguments descriptor array.
   // RBX: Smi 0 (no IC data; the lazy-compile stub expects a GC-safe value).
   __ xorq(RBX, RBX);
-  __ movq(RCX, FieldAddress(RCX, Code::instructions_offset()));
   __ addq(RCX, Immediate(Instructions::HeaderSize() - kHeapObjectTag));
   __ call(RCX);
   compiler->AddCurrentDescriptor(PcDescriptors::kClosureCall,
                                  deopt_id(),
                                  token_pos());
   compiler->RecordSafepoint(locs());
   // Marks either the continuation point in unoptimized code or the
   // deoptimization point in optimized code, after call.
   const intptr_t deopt_id_after = Isolate::ToDeoptAfter(deopt_id());
   if (compiler->is_optimizing()) {
@@ skipping 45 matching lines @@
                          PcDescriptors::kOther,
                          locs());
   __ Drop(ArgumentCount());  // Discard arguments.
 }
 
 }  // namespace dart
 
 #undef __
 
 #endif  // defined TARGET_ARCH_X64