Fixes bugs in arm and mips intrinsifier.

runtime/vm/simulator_mips.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include <math.h>  // for isnan.
 #include <setjmp.h>
 #include <stdlib.h>
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_MIPS)
@@ skipping 1632 matching lines @@
             UnimplementedInstruction(instr);
             break;
           }
         }
         break;
       }
       case COP1_CVT_W: {
         switch (instr->FormatField()) {
           case FMT_D: {
             double fs_dbl = get_fregister_double(instr->FsField());
-            int32_t fs_int = static_cast<int32_t>(fs_dbl);
+            int32_t fs_int;
+            if (isnan(fs_dbl) || isinf(fs_dbl) || (fs_dbl > INT_MAX) ||
+                (fs_dbl < INT_MIN)) {
+              fs_int = INT_MIN;
+            } else {
+              fs_int = static_cast<int32_t>(fs_dbl);
+            }
             set_fregister(instr->FdField(), fs_int);
             break;
           }
           default: {
             OS::PrintErr("DecodeCop1: 0x%x\n", instr->InstructionBits());
             UnimplementedInstruction(instr);
             break;
           }
         }
         break;
@@ skipping 558 matching lines @@
   set_register(kExceptionObjectReg, bit_cast<int32_t>(raw_exception));
   set_register(kStackTraceObjectReg, bit_cast<int32_t>(raw_stacktrace));
   buf->Longjmp();
 }
 
 }  // namespace dart
 
 #endif  // !defined(HOST_ARCH_MIPS)
 
 #endif  // defined TARGET_ARCH_MIPS