Inline of Float64x2 operations round 1

runtime/vm/disassembler_x64.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/disassembler.h"
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_IA32.
 #if defined(TARGET_ARCH_X64)
 #include "platform/utils.h"
 #include "vm/allocation.h"
@@ skipping 1181 matching lines @@
 // These instructions may be affected by an 0x66, 0xF2, or 0xF3 prefix.
 // We do not use any three-byte opcodes, which start with 0x0F38 or 0x0F3A.
 int DisassemblerX64::TwoByteOpcodeInstruction(uint8_t* data) {
   uint8_t opcode = *(data + 1);
   uint8_t* current = data + 2;
   // At return, "current" points to the start of the next instruction.
   const char* mnemonic = TwoByteMnemonic(opcode);
   if (operand_size_ == 0x66) {
     // 0x66 0x0F prefix.
     int mod, regop, rm;
-    if (opcode == 0x3A) {
+    if (opcode == 0xC6) {
+      int mod, regop, rm;
+      get_modrm(*current, &mod, &regop, &rm);
+      AppendToBuffer("shufpd %s, ", NameOfXMMRegister(regop));
+      current += PrintRightXMMOperand(current);
+      AppendToBuffer(" [%x]", *current);
+      current++;
+    } else if (opcode == 0x3A) {
       uint8_t third_byte = *current;
       current = data + 3;
       if (third_byte == 0x17) {
         get_modrm(*current, &mod, &regop, &rm);
         AppendToBuffer("extractps ");  // reg/m32, xmm, imm8
         current += PrintRightOperand(current);
         AppendToBuffer(", %s, %d", NameOfCPURegister(regop), (*current) & 3);
         current += 1;
       } else if (third_byte == 0x0b) {
         get_modrm(*current, &mod, &regop, &rm);
@@ skipping 747 matching lines @@
                                   pc);
     pc += instruction_length;
   }
 
   return;
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64