Add support for near labels....

src/ia32/assembler-ia32.h

Index: src/ia32/assembler-ia32.h
===================================================================
--- src/ia32/assembler-ia32.h	(revision 5449)
+++ src/ia32/assembler-ia32.h	(working copy)
@@ -687,6 +687,7 @@
   // but it may be bound only once.
 
   void bind(Label* L);  // binds an unbound label L to the current code position
+  void bind(NearLabel* L);
 
   // Calls
   void call(Label* L);
@@ -701,11 +702,17 @@
   void jmp(const Operand& adr);
   void jmp(Handle<Code> code, RelocInfo::Mode rmode);
 
+  // Short jump
+  void jmp(NearLabel* L);
+
   // Conditional jumps
   void j(Condition cc, Label* L, Hint hint = no_hint);
   void j(Condition cc, byte* entry, RelocInfo::Mode rmode, Hint hint = no_hint);
   void j(Condition cc, Handle<Code> code, Hint hint = no_hint);
 
+  // Conditional short jump
+  void j(Condition cc, NearLabel* L, Hint hint = no_hint);
+
   // Floating-point operations
   void fld(int i);
   void fstp(int i);
@@ -868,6 +875,7 @@
  private:
   byte* addr_at(int pos)  { return buffer_ + pos; }
   byte byte_at(int pos)  { return buffer_[pos]; }
+  void set_byte_at(int pos, byte value) { buffer_[pos] = value; }
   uint32_t long_at(int pos)  {
     return *reinterpret_cast<uint32_t*>(addr_at(pos));
   }
@@ -902,7 +910,6 @@
   // labels
   void print(Label* L);
   void bind_to(Label* L, int pos);
-  void link_to(Label* L, Label* appendix);
 
   // displacements
   inline Displacement disp_at(Label* L);