MIPS: Fixed some mips32r1-specific test failures.

test/cctest/test-assembler-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 756 matching lines @@
     int32_t long_hi;
     int32_t long_lo;
     int32_t b_long_hi;
     int32_t b_long_lo;
   } T;
   T t;
 
   Assembler assm(Isolate::Current(), NULL, 0);
   Label L, C;
 
-  if (CpuFeatures::IsSupported(FPU)) {
+  if (CpuFeatures::IsSupported(FPU) && mips32r2) {
     CpuFeatures::Scope scope(FPU);
 
     // Load all structure elements to registers.
     __ ldc1(f0, MemOperand(a0, OFFSET_OF(T, a)));
 
     // Save the raw bits of the double.
     __ mfc1(t0, f0);
     __ mfc1(t1, f1);
     __ sw(t0, MemOperand(a0, OFFSET_OF(T, dbl_mant)));
     __ sw(t1, MemOperand(a0, OFFSET_OF(T, dbl_exp)));
@@ skipping 481 matching lines @@
   Label target;
   __ beq(v0, v1, &target);
   __ nop();
   __ bne(v0, v1, &target);
   __ nop();
   __ bind(&target);
   __ nop();
 }
 
 #undef __