Add support for XMM registers in SSA code generation pipeline.

runtime/vm/assembler_macros_x64.h

 // Copyright (c) 2011, 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.
 // The class 'AssemblerMacros' contains assembler instruction groups that
 // are used in Dart.
 
 #ifndef VM_ASSEMBLER_MACROS_X64_H_
 #define VM_ASSEMBLER_MACROS_X64_H_
 
 #ifndef VM_ASSEMBLER_MACROS_H_
@@ skipping 12 matching lines @@
 
 class AssemblerMacros : public AllStatic {
  public:
   // Inlined allocation of an instance of class 'cls', code has no runtime
   // calls. Jump to 'failure' if the instance cannot be allocated here.
   // Allocated instance is returned in 'instance_reg'.
   // Only the tags field of the object is initialized.
   static void TryAllocate(Assembler* assembler,
                           const Class& cls,
                           Label* failure,
+                          bool near_jump,
                           Register instance_reg);
 
   // Set up a dart frame on entry with a frame pointer and PC information to
   // enable easy access to the RawInstruction object of code corresponding
   // to this frame.
   // The dart frame layout is as follows:
   //   ....
   //   ret PC
   //   saved RBP     <=== RBP
   //   pc (used to derive the RawInstruction Object of the dart code)
@@ skipping 31 matching lines @@
   //   pushq rbp          (size is 1 byte)
   //   movq rbp, rsp      (size is 3 bytes)
   //   call L             (size is 5 bytes)
   //   L:
   static const intptr_t kOffsetOfSavedPCfromEntrypoint = 9;
 };
 
 }  // namespace dart.
 
 #endif  // VM_ASSEMBLER_MACROS_X64_H_