MIPS: Fix abs_d instruction in the simulator.

src/mips/simulator-mips.cc

 // Copyright 2011 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 2073 matching lines @@
             case SUB_D:
               set_fpu_register_double(fd_reg, fs - ft);
               break;
             case MUL_D:
               set_fpu_register_double(fd_reg, fs * ft);
               break;
             case DIV_D:
               set_fpu_register_double(fd_reg, fs / ft);
               break;
             case ABS_D:
-              set_fpu_register_double(fd_reg, fs < 0 ? -fs : fs);
+              set_fpu_register_double(fd_reg, fabs(fs));
               break;
             case MOV_D:
               set_fpu_register_double(fd_reg, fs);
               break;
             case NEG_D:
               set_fpu_register_double(fd_reg, -fs);
               break;
             case SQRT_D:
               set_fpu_register_double(fd_reg, sqrt(fs));
               break;
@@ skipping 833 matching lines @@
 }
 
 
 #undef UNSUPPORTED
 
 } }  // namespace v8::internal
 
 #endif  // USE_SIMULATOR
 
 #endif  // V8_TARGET_ARCH_MIPS