Add support for deoptimization on x64. ...

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 572 matching lines @@
   // of m. m must be a power of 2.
   void Align(int m);
   // Aligns code to something that's optimal for a jump target for the platform.
   void CodeTargetAlign();
 
   // Stack
   void pushfq();
   void popfq();
 
   void push(Immediate value);
+  void push_imm32(int32_t imm32);

[Lasse Reichstein, 2011/01/24 13:24:21]

Add a comment stating why it's necessary to have this function, and not just use
push(Immediate(imm32)).
(It's for "fixed code size guarantee" I assume).

[Rico, 2011/01/24 13:40:14]

Done.

   void push(Register src);
   void push(const Operand& src);
 
   void pop(Register dst);
   void pop(const Operand& dst);
 
   void enter(Immediate size);
   void leave();
 
   // Moves
@@ skipping 512 matching lines @@
   void jmp(Register adr);
 
   // Jump near absolute indirect (m64)
   void jmp(const Operand& src);
 
   // Short jump
   void jmp(NearLabel* L);
 
   // Conditional jumps
   void j(Condition cc, Label* L);
+  void j(Condition cc, byte* entry, RelocInfo::Mode rmode, Hint hint= no_hint);

[Lasse Reichstein, 2011/01/24 13:24:21]

We don't use hints in the X64 assembler.

[Rico, 2011/01/24 13:40:14]

Done.

   void j(Condition cc, Handle<Code> target, RelocInfo::Mode rmode);
 
   // Conditional short jump
   void j(Condition cc, NearLabel* L, Hint hint = no_hint);
 
   // Floating-point operations
   void fld(int i);
 
   void fld1();
   void fldz();
@@ skipping 387 matching lines @@
  private:
   Assembler* assembler_;
 #ifdef DEBUG
   int space_before_;
 #endif
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_X64_ASSEMBLER_X64_H_