MIPS64: Improve UInt32 to Double conversion.

test/cctest/test-assembler-mips64.cc

 // Copyright 2012 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 1168 matching lines @@
     uint32_t trunc_big_out;
     uint32_t trunc_small_out;
     uint32_t cvt_big_in;
     uint32_t cvt_small_in;
   } T;
   T t;
 
   MacroAssembler assm(isolate, NULL, 0);
 
   __ sw(a4, MemOperand(a0, offsetof(T, cvt_small_in)));
-  __ Cvt_d_uw(f10, a4, f4);
+  __ Cvt_d_uw(f10, a4);
   __ sdc1(f10, MemOperand(a0, offsetof(T, cvt_small_out)));
 
   __ Trunc_uw_d(f10, f10, f4);
   __ swc1(f10, MemOperand(a0, offsetof(T, trunc_small_out)));
 
   __ sw(a4, MemOperand(a0, offsetof(T, cvt_big_in)));
-  __ Cvt_d_uw(f8, a4, f4);
+  __ Cvt_d_uw(f8, a4);
   __ sdc1(f8, MemOperand(a0, offsetof(T, cvt_big_out)));
 
   __ Trunc_uw_d(f8, f8, f4);
   __ swc1(f8, MemOperand(a0, offsetof(T, trunc_big_out)));
 
   __ jr(ra);
   __ nop();
 
   CodeDesc desc;
   assm.GetCode(&desc);
@@ skipping 4279 matching lines @@
   };
 
   size_t nr_test_cases = sizeof(tc) / sizeof(TestCaseBal);
   for (size_t i = 0; i < nr_test_cases; ++i) {
     CHECK_EQ(tc[i].expected_res, run_bal(tc[i].offset));
   }
 }
 
 
 #undef __