Fixes small ARM bugs, and updates status files.

runtime/vm/intrinsifier_arm.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 "vm/globals.h"  // Needed here to get TARGET_ARCH_ARM.
 #if defined(TARGET_ARCH_ARM)
 
 #include "vm/intrinsifier.h"
 
 #include "vm/assembler.h"
@@ skipping 1290 matching lines @@
   __ vmovrrd(R0, R1, D0);  // R1:R0 <- D0, so sign bit is in bit 31 of R1.
   __ mov(R1, ShifterOperand(R1, LSR, 31));
   __ tst(R1, ShifterOperand(1));
   __ b(&is_true, NE);  // Sign bit set.
   __ b(&is_false);
   return true;
 }
 
 
 bool Intrinsifier::Double_toInt(Assembler* assembler) {
+  Label fall_through;
+
   __ ldr(R0, Address(SP, 0 * kWordSize));
   __ LoadDFromOffset(D0, R0, Double::value_offset() - kHeapObjectTag);
+
+  // Explicit NaN check, since ARM gives an FPU exception if you try to
+  // convert NaN to an int.
+  __ vcmpd(D0, D0);
+  __ vmstat();
+  __ b(&fall_through, VS);
+
   __ vcvtid(S0, D0);

[Ivan Posva, 2013/06/06 22:03:55]

Should we update the simulator to throw an exception when converting a NaN to an
int using this instruction?

   __ vmovrs(R0, S0);
   // Overflow is signaled with minint.
-  Label fall_through;
   // Check for overflow and that it fits into Smi.
   __ CompareImmediate(R0, 0xC0000000);
   __ b(&fall_through, MI);
   __ SmiTag(R0);
   __ Ret();
   __ Bind(&fall_through);
   return false;
 }
 
 
@@ skipping 352 matching lines @@
   __ Bind(&ok);
   __ Ret();
 
   __ Bind(&fall_through);
   return false;
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM