Pretenure call new support.

src/a64/macro-assembler-a64.h

 // Copyright 2013 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 767 matching lines @@
                                Register value2,
                                Label* not_smi_label);
 
   // Abort execution if argument is a smi, enabled via --debug-code.
   void AssertNotSmi(Register object, BailoutReason reason = kOperandIsASmi);
   void AssertSmi(Register object, BailoutReason reason = kOperandIsNotASmi);
 
   // Abort execution if argument is not a name, enabled via --debug-code.
   void AssertName(Register object);
 
+  // Abort execution if argument is not undefined or an AllocationSite, enabled
+  // via --debug-code.
+  void AssertUndefinedOrAllocationSite(Register object, Register scratch);
+
   // Abort execution if argument is not a string, enabled via --debug-code.
   void AssertString(Register object);
 
   void JumpForHeapNumber(Register object,
                          Register heap_number_map,
                          Label* on_heap_number,
                          Label* on_not_heap_number = NULL);
   void JumpIfHeapNumber(Register object,
                         Label* on_heap_number,
                         Register heap_number_map = NoReg);
@@ skipping 1385 matching lines @@
 #error "Unsupported option"
 #define CODE_COVERAGE_STRINGIFY(x) #x
 #define CODE_COVERAGE_TOSTRING(x) CODE_COVERAGE_STRINGIFY(x)
 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__)
 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 
 #endif  // V8_A64_MACRO_ASSEMBLER_A64_H_