Enables first codegen test on arm64.

runtime/vm/flow_graph_compiler_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/flow_graph_compiler.h"
 
 #include "vm/ast_printer.h"
@@ skipping 1132 matching lines @@
   GenerateDeferredCode();
   // Emit function patching code. This will be swapped with the first 13 bytes
   // at entry point.
   AddCurrentDescriptor(PcDescriptors::kPatchCode,
                        Isolate::kNoDeoptId,
                        0);  // No token position.
   // This is patched up to a point in FrameEntry where the PP for the
   // current function is in R13 instead of PP.
   __ JmpPatchable(&StubCode::FixCallersTargetLabel(), R13);
 
-  // TOOD(zra): Is this descriptor used?
   AddCurrentDescriptor(PcDescriptors::kLazyDeoptJump,
                        Isolate::kNoDeoptId,
                        0);  // No token position.
   __ Jmp(&StubCode::DeoptimizeLazyLabel(), PP);
 }
 
 
 void FlowGraphCompiler::GenerateCall(intptr_t token_pos,
                                      const ExternalLabel* label,
                                      PcDescriptors::Kind kind,
@@ skipping 659 matching lines @@
   __ movups(reg, Address(RSP, 0));
   __ AddImmediate(RSP, Immediate(kFpuRegisterSize), PP);
 }
 
 
 #undef __
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64