-Inlined double variant of compare iff one of the sides is a constant smi and...

src/ia32/disasm-ia32.cc

 // Copyright 2007-2008 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 1031 matching lines @@
         } else if (*data == 0x0F) {
           data++;
           if (*data == 0x2F) {
             data++;
             int mod, regop, rm;
             get_modrm(*data, &mod, &regop, &rm);
             AppendToBuffer("comisd %s,%s",
                            NameOfXMMRegister(regop),
                            NameOfXMMRegister(rm));
             data++;
-          } else {
-            UnimplementedInstruction();
+          } if(*data == 0x57) {

[iposva, 2009/12/17 21:03:50]

missing else?

[bakster, 2009/12/18 06:38:47]

Done.

+            data++;
+            int mod, regop, rm;
+            get_modrm(*data, &mod, &regop, &rm);
+            AppendToBuffer("xorpd %s,%s",
+                           NameOfXMMRegister(regop),
+                           NameOfXMMRegister(rm));
+            data++;
           }
         } else {
           UnimplementedInstruction();
         }
         break;
 
       case 0xFE:
         { data++;
           int mod, regop, rm;
           get_modrm(*data, &mod, &regop, &rm);
@@ skipping 225 matching lines @@
     }
     for (int i = 6 - (pc - prev_pc); i >= 0; i--) {
       fprintf(f, "  ");
     }
     fprintf(f, "  %s\n", buffer.start());
   }
 }
 
 
 }  // namespace disasm