[x64] Fix REX prefix in shufps

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 3016 matching lines @@
     emit(0x0F);
     emit(0x28);
     emit_sse_operand(dst, src);
   }
 }
 
 
 void Assembler::shufps(XMMRegister dst, XMMRegister src, byte imm8) {
   DCHECK(is_uint8(imm8));
   EnsureSpace ensure_space(this);
-  emit_optional_rex_32(src, dst);
+  emit_optional_rex_32(dst, src);
   emit(0x0F);
   emit(0xC6);
   emit_sse_operand(dst, src);
   emit(imm8);
 }
 
 
 void Assembler::movapd(XMMRegister dst, XMMRegister src) {
   DCHECK(!IsEnabled(AVX));
   EnsureSpace ensure_space(this);
@@ skipping 1692 matching lines @@
 
 bool RelocInfo::IsInConstantPool() {
   return false;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64