MIPS64: Add/fix bit insertion/extraction instrs.

src/mips64/macro-assembler-mips64.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_MIPS_MACRO_ASSEMBLER_MIPS_H_
 #define V8_MIPS_MACRO_ASSEMBLER_MIPS_H_
 
 #include "src/assembler.h"
 #include "src/globals.h"
 #include "src/mips64/assembler-mips64.h"
@@ skipping 845 matching lines @@
   void PushSafepointRegisters();
   void PopSafepointRegisters();
   // Store value in register src in the safepoint stack slot for
   // register dst.
   void StoreToSafepointRegisterSlot(Register src, Register dst);
   // Load the value of the src register from its safepoint stack slot
   // into register dst.
   void LoadFromSafepointRegisterSlot(Register dst, Register src);
 
   // MIPS64 R2 instruction macro.
+  void Ext(Register rt, Register rs, uint16_t pos, uint16_t size);
+  void Dext(Register rt, Register rs, uint16_t pos, uint16_t size);
   void Ins(Register rt, Register rs, uint16_t pos, uint16_t size);
   void Dins(Register rt, Register rs, uint16_t pos, uint16_t size);
-  void Ext(Register rt, Register rs, uint16_t pos, uint16_t size);
-
-  void ExtractBits(Register rt, Register rs, uint16_t pos, uint16_t size);
-
-  void Dext(Register rt, Register rs, uint16_t pos, uint16_t size);
-  void Dextm(Register rt, Register rs, uint16_t pos, uint16_t size);
-  void Dextu(Register rt, Register rs, uint16_t pos, uint16_t size);
   void Neg_s(FPURegister fd, FPURegister fs);
   void Neg_d(FPURegister fd, FPURegister fs);
 
   // MIPS64 R6 instruction macros.
   void Bovc(Register rt, Register rs, Label* L);
   void Bnvc(Register rt, Register rs, Label* L);
 
   // ---------------------------------------------------------------------------
   // FPU macros. These do not handle special cases like NaN or +- inf.
 
@@ skipping 1084 matching lines @@
     dd(GetLabelFunction(index));
   }
 }
 
 #define ACCESS_MASM(masm) masm->
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_MIPS_MACRO_ASSEMBLER_MIPS_H_