MIPS: Faster memcpy.

src/mips/assembler-mips.h

Index: src/mips/assembler-mips.h
diff --git a/src/mips/assembler-mips.h b/src/mips/assembler-mips.h
index d9ef46cd01464903fe35b5e72d9c402863555755..70f77eaeda8726fe830a3e6ad7f5443613275304 100644
--- a/src/mips/assembler-mips.h
+++ b/src/mips/assembler-mips.h
@@ -386,7 +386,15 @@ class Operand BASE_EMBEDDED {
 // 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 {
@@ -711,6 +719,11 @@ class Assembler : public AssemblerBase {
   void swr(Register rd, const MemOperand& rs);
 
 
+  //----------------Prefetch--------------------
+
+  void pref(int32_t hint, const MemOperand& rs);
+
+
   //-------------Misc-instructions--------------
 
   // Break / Trap instructions.