Add generated code for ascii string comparison...

src/ia32/assembler-ia32.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 522 matching lines @@
 
   void movzx_b(Register dst, const Operand& src);
 
   void movzx_w(Register dst, const Operand& src);
 
   // Conditional moves
   void cmov(Condition cc, Register dst, int32_t imm32);
   void cmov(Condition cc, Register dst, Handle<Object> handle);
   void cmov(Condition cc, Register dst, const Operand& src);
 
-  // Repetitive moves.
+  // Repetitive string instructions.
   void rep_movs();
 
   // Exchange two registers
   void xchg(Register dst, Register src);
 
   // Arithmetics
   void adc(Register dst, int32_t imm32);
   void adc(Register dst, const Operand& src);
 
   void add(Register dst, const Operand& src);
@@ skipping 56 matching lines @@
 
   void shl(Register dst, uint8_t imm8);
   void shl_cl(Register dst);
 
   void shrd(Register dst, const Operand& src);
 
   void shr(Register dst, uint8_t imm8);
   void shr_cl(Register dst);
 
   void subb(const Operand& dst, int8_t imm8);
+  void subb(Register dst, const Operand& src);
   void sub(const Operand& dst, const Immediate& x);
   void sub(Register dst, const Operand& src);
   void sub(const Operand& dst, Register src);
 
   void test(Register reg, const Immediate& imm);
   void test(Register reg, const Operand& op);
   void test(const Operand& op, const Immediate& imm);
 
   void xor_(Register dst, int32_t imm32);
   void xor_(Register dst, const Operand& src);
@@ skipping 38 matching lines @@
   void jmp(Label* L);  // unconditional jump to L
   void jmp(byte* entry, RelocInfo::Mode rmode);
   void jmp(const Operand& adr);
   void jmp(Handle<Code> code, RelocInfo::Mode rmode);
 
   // 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);
 
+  // Loop instruction using ecx as counter.
+  void loope(Label* L);
+
   // Floating-point operations
   void fld(int i);
 
   void fld1();
   void fldz();
 
   void fld_s(const Operand& adr);
   void fld_d(const Operand& adr);
 
   void fstp_s(const Operand& adr);
@@ skipping 216 matching lines @@
  private:
   Assembler* assembler_;
 #ifdef DEBUG
   int space_before_;
 #endif
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_IA32_ASSEMBLER_IA32_H_