[Atomics] Make Atomics.exchange a builtin using TF

src/x64/assembler-x64.h

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // 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.
 //
@@ skipping 774 matching lines @@
   void andb(Register dst, Immediate src) {
     immediate_arithmetic_op_8(0x4, dst, src);
   }
 
   void decb(Register dst);
   void decb(const Operand& dst);
 
   // Lock prefix.
   void lock();
 
-  void xchgb(Register reg, const Operand& op);
-  void xchgw(Register reg, const Operand& op);
+  void xchgb(Register reg, const Operand& op, bool is_signed);
+  void xchgw(Register reg, const Operand& op, bool is_signed);
 
   void cmpxchgb(const Operand& dst, Register src);
   void cmpxchgw(const Operand& dst, Register src);
 
   // Sign-extends rax into rdx:rax.
   void cqo();
   // Sign-extends eax into edx:eax.
   void cdq();
 
   // Multiply eax by src, put the result in edx:eax.
@@ skipping 1721 matching lines @@
   Assembler* assembler_;
 #ifdef DEBUG
   int space_before_;
 #endif
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_X64_ASSEMBLER_X64_H_