MIPS: Faster memcpy.

src/mips/assembler-mips.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 368 matching lines @@
 
   friend class Assembler;
   friend class MacroAssembler;
 };
 
 
 // On MIPS we have only one adressing mode with base_reg + offset.
 // Class MemOperand represents a memory operand in load and store instructions.
 class MemOperand : public Operand {
  public:
+  // Immediate value attached to offset.
+  enum OffsetAddend {
+    offset_minus_one = -1,
+    offset_zero = 0
+  };
+
   explicit MemOperand(Register rn, int32_t offset = 0);
+  explicit MemOperand(Register rn, int32_t unit, int32_t multiplier,
+                      OffsetAddend offset_addend = offset_zero);
   int32_t offset() const { return offset_; }
 
   bool OffsetIsInt16Encodable() const {
     return is_int16(offset_);
   }
 
  private:
   int32_t offset_;
 
   friend class Assembler;
@@ skipping 304 matching lines @@
   void lw(Register rd, const MemOperand& rs);
   void lwl(Register rd, const MemOperand& rs);
   void lwr(Register rd, const MemOperand& rs);
   void sb(Register rd, const MemOperand& rs);
   void sh(Register rd, const MemOperand& rs);
   void sw(Register rd, const MemOperand& rs);
   void swl(Register rd, const MemOperand& rs);
   void swr(Register rd, const MemOperand& rs);
 
 
+  //----------------Prefetch--------------------
+
+  void pref(int32_t hint, const MemOperand& rs);
+
+
   //-------------Misc-instructions--------------
 
   // Break / Trap instructions.
   void break_(uint32_t code, bool break_as_stop = false);
   void stop(const char* msg, uint32_t code = kMaxStopCode);
   void tge(Register rs, Register rt, uint16_t code);
   void tgeu(Register rs, Register rt, uint16_t code);
   void tlt(Register rs, Register rt, uint16_t code);
   void tltu(Register rs, Register rt, uint16_t code);
   void teq(Register rs, Register rt, uint16_t code);
@@ skipping 510 matching lines @@
 class EnsureSpace BASE_EMBEDDED {
  public:
   explicit EnsureSpace(Assembler* assembler) {
     assembler->CheckBuffer();
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM_ASSEMBLER_MIPS_H_