In preparation of inlining remainder and modulo binary Smi operations:

runtime/lib/integers.dart

 // Copyright (c) 2012, 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.
 
 // TODO(srdjan): fix limitations.
 // - shift amount must be a Smi.
 class _IntegerImplementation {
   factory _IntegerImplementation._uninstantiable() {
     throw new UnsupportedError(
         "_IntegerImplementation can only be allocated by the VM");
@@ skipping 257 matching lines @@
       negative = true;
       // Handle the first digit as negative to avoid negating the minimum
       // smi, for which the negation is not a smi.
       int digit = -(val.remainder(10));
       reversed[index++] = digit + 0x30;
       val = -(val ~/ 10);
     }
 
     while (val > 0) {
       int digit = val % 10;
+      val = val ~/ 10;
       reversed[index++] = (digit + 0x30);
-      val = val ~/ 10;
     }
     if (negative) reversed[index++] = 0x2D;  // '-'.
 
     _OneByteString string = _OneByteString._allocate(index);
     for (int i = 0, j = index; i < index; i++) {
       string._setAt(i, reversed[--j]);
     }
     return string;
   }
 }
@@ skipping 44 matching lines @@
     } else {
       return 0;
     }
   }
   int _shlFromInt(int other) native "Bigint_shlFromInt";
 
   int pow(int exponent) {
     throw "Bigint.pow not implemented";
   }
 }