[wasm] Implement wasm x64 I16x8 Ops

src/x64/assembler-x64.cc

 // 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.
 
 #include "src/x64/assembler-x64.h"
 
 #include <cstring>
 
 #if V8_TARGET_ARCH_X64
 
@@ skipping 917 matching lines @@
   EnsureSpace ensure_space(this);
   emit(0xF8);
 }
 
 
 void Assembler::cld() {
   EnsureSpace ensure_space(this);
   emit(0xFC);
 }
 
-
 void Assembler::cdq() {
   EnsureSpace ensure_space(this);
   emit(0x99);
 }
 
 
 void Assembler::cmovq(Condition cc, Register dst, Register src) {
   if (cc == always) {
     movq(dst, src);
   } else if (cc == never) {
@@ skipping 1936 matching lines @@
   emit(0xC4);
   emit_sse_operand(dst, src);
   emit(imm8);
 }
 
 void Assembler::pextrw(Register dst, XMMRegister src, int8_t imm8) {
   DCHECK(IsEnabled(SSE4_1));
   DCHECK(is_uint8(imm8));
   EnsureSpace ensure_space(this);
   emit(0x66);
-  emit_optional_rex_32(dst, src);
+  emit_optional_rex_32(src, dst);
   emit(0x0F);
   emit(0x3A);
   emit(0x15);
-  emit_sse_operand(dst, src);
+  emit_sse_operand(src, dst);
   emit(imm8);
 }
 
 void Assembler::pextrw(const Operand& dst, XMMRegister src, int8_t imm8) {
   DCHECK(IsEnabled(SSE4_1));
   DCHECK(is_uint8(imm8));
   EnsureSpace ensure_space(this);
   emit(0x66);
   emit_optional_rex_32(src, dst);
   emit(0x0F);
@@ skipping 1719 matching lines @@
 void Assembler::psrldq(XMMRegister dst, uint8_t shift) {
   EnsureSpace ensure_space(this);
   emit(0x66);
   emit_optional_rex_32(dst);
   emit(0x0F);
   emit(0x73);
   emit_sse_operand(dst);
   emit(shift);
 }
 
+void Assembler::pshufhw(XMMRegister dst, XMMRegister src, uint8_t shuffle) {
+  EnsureSpace ensure_space(this);
+  emit(0xF3);
+  emit_optional_rex_32(dst, src);
+  emit(0x0F);
+  emit(0x70);
+  emit_sse_operand(dst, src);
+  emit(shuffle);
+}
+
+void Assembler::pshuflw(XMMRegister dst, XMMRegister src, uint8_t shuffle) {
+  EnsureSpace ensure_space(this);
+  emit(0xF2);
+  emit_optional_rex_32(dst, src);
+  emit(0x0F);
+  emit(0x70);
+  emit_sse_operand(dst, src);
+  emit(shuffle);
+}
+
 void Assembler::pshufd(XMMRegister dst, XMMRegister src, uint8_t shuffle) {
   EnsureSpace ensure_space(this);
   emit(0x66);
   emit_optional_rex_32(dst, src);
   emit(0x0F);
   emit(0x70);
   emit_sse_operand(dst, src);
   emit(shuffle);
 }
 
@@ skipping 117 matching lines @@
 
 bool RelocInfo::IsInConstantPool() {
   return false;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64