Port inline version of Math.sqrt and Math.pow from ia32 to x64.

src/x64/disasm-x64.cc

 // Copyright 2009 the V8 project authors. 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.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1017 matching lines @@
       } else {
         AppendToBuffer("%s,", NameOfXMMRegister(regop));
         current += PrintRightOperand(current);
       }
     } else if (opcode == 0x2A) {
       // CVTSI2SD: integer to XMM double conversion.
       int mod, regop, rm;
       get_modrm(*current, &mod, &regop, &rm);
       AppendToBuffer("%s %s,", mnemonic, NameOfXMMRegister(regop));
       current += PrintRightOperand(current);
-    } else if ((opcode & 0xF8) == 0x58) {
+    } else if ((opcode & 0xF8) == 0x58 || opcode == 0x51) {
       // XMM arithmetic. Mnemonic was retrieved at the start of this function.
       int mod, regop, rm;
       get_modrm(*current, &mod, &regop, &rm);
       AppendToBuffer("%s %s,", mnemonic, NameOfXMMRegister(regop));
       current += PrintRightXMMOperand(current);
     } else {
       UnimplementedInstruction();
     }
   } else if (group_1_prefix_ == 0xF3) {
     // Instructions with prefix 0xF3.
@@ skipping 70 matching lines @@
 // The argument is the second byte of the two-byte opcode.
 // Returns NULL if the instruction is not handled here.
 const char* DisassemblerX64::TwoByteMnemonic(byte opcode) {
   switch (opcode) {
     case 0x1F:
       return "nop";
     case 0x2A:  // F2 prefix.
       return "cvtsi2sd";
     case 0x31:
       return "rdtsc";
+    case 0x51:  // F2 prefix.
+      return "sqrtsd";
     case 0x58:  // F2 prefix.
       return "addsd";
     case 0x59:  // F2 prefix.
       return "mulsd";
     case 0x5C:  // F2 prefix.
       return "subsd";
     case 0x5E:  // F2 prefix.
       return "divsd";
     case 0xA2:
       return "cpuid";
@@ skipping 502 matching lines @@
       fprintf(f, "%02x", *bp);
     }
     for (int i = 6 - static_cast<int>(pc - prev_pc); i >= 0; i--) {
       fprintf(f, "  ");
     }
     fprintf(f, "  %s\n", buffer.start());
   }
 }
 
 }  // namespace disasm