ARM64: Use direct deoptimization exits.

src/arm64/macro-assembler-arm64.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 485 matching lines @@
                      const Register& rn,
                      const Register& rm,
                      const Register& ra);
   inline void Uxtb(const Register& rd, const Register& rn);
   inline void Uxth(const Register& rd, const Register& rn);
   inline void Uxtw(const Register& rd, const Register& rn);
 
   // Pseudo-instructions ------------------------------------------------------
 
   // Compute rd = abs(rm).
-  // This function clobbers the condition flags.
+  // This function clobbers the condition flags. On output the overflow flag is
+  // set iff the negation overflowed.
   //
   // If rm is the minimum representable value, the result is not representable.
   // Handlers for each case can be specified using the relevant labels.
   void Abs(const Register& rd, const Register& rm,
            Label * is_not_representable = NULL,
            Label * is_representable = NULL);
 
   // Push or pop up to 4 registers of the same width to or from the stack,
   // using the current stack pointer as set by SetStackPointer.
   //
@@ skipping 1783 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_ARM64_MACRO_ASSEMBLER_ARM64_H_