Deopt on overflow in integer mod.

src/hydrogen-instructions.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 1324 matching lines @@
 }
 
 
 Range* HMod::InferRange(Zone* zone) {
   if (representation().IsInteger32()) {
     Range* a = left()->range();
     Range* result = new(zone) Range();
     if (a->CanBeMinusZero() || a->CanBeNegative()) {
       result->set_can_be_minus_zero(true);
     }
+
+    if (right()->range()->Includes(-1) && left()->range()->Includes(kMinInt)) {
+      SetFlag(HValue::kCanOverflow);
+    }
+
     if (!right()->range()->CanBeZero()) {
       ClearFlag(HValue::kCanBeDivByZero);
     }
     return result;
   } else {
     return HValue::InferRange(zone);
   }
 }
 
 
@@ skipping 1426 matching lines @@
 
 
 void HCheckFunction::Verify() {
   HInstruction::Verify();
   ASSERT(HasNoUses());
 }
 
 #endif
 
 } }  // namespace v8::internal