[wasm] Implement wasm x64 I16x8 Ops

src/x64/assembler-x64.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 1287 matching lines @@
   void rsqrtps(XMMRegister dst, XMMRegister src);
   void rsqrtps(XMMRegister dst, const Operand& src);
   void sqrtps(XMMRegister dst, XMMRegister src);
   void sqrtps(XMMRegister dst, const Operand& src);
   void movups(XMMRegister dst, XMMRegister src);
   void movups(XMMRegister dst, const Operand& src);
   void movups(const Operand& dst, XMMRegister src);
   void psrldq(XMMRegister dst, uint8_t shift);
   void pshufd(XMMRegister dst, XMMRegister src, uint8_t shuffle);
   void pshufd(XMMRegister dst, const Operand& src, uint8_t shuffle);
+  void pshufhw(XMMRegister dst, XMMRegister src, uint8_t shuffle);
+  void pshuflw(XMMRegister dst, XMMRegister src, uint8_t shuffle);
   void cvtdq2ps(XMMRegister dst, XMMRegister src);
   void cvtdq2ps(XMMRegister dst, const Operand& src);
 
   // AVX instruction
   void vfmadd132sd(XMMRegister dst, XMMRegister src1, XMMRegister src2) {
     vfmasd(0x99, dst, src1, src2);
   }
   void vfmadd213sd(XMMRegister dst, XMMRegister src1, XMMRegister src2) {
     vfmasd(0xa9, dst, src1, src2);
   }
@@ skipping 1204 matching lines @@
   Assembler* assembler_;
 #ifdef DEBUG
   int space_before_;
 #endif
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_X64_ASSEMBLER_X64_H_