vm: Generate 'and' instruction for Smi values.

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.
 
 abstract class _IntegerImplementation {
   // The Dart class _Bigint extending _IntegerImplementation requires a
   // default constructor.
 
   Type get runtimeType => int;
 
@@ skipping 45 matching lines @@
     return other._toBigint()._bitOrFromInteger(this);
   }
   int operator ^(int other) {
     var result = other._bitXorFromInteger(this);
     if (result != null) return result;
     return other._toBigint()._bitXorFromInteger(this);
   }
   num remainder(num other) {
     return other._remainderFromInteger(this);
   }
+  int _bitAndFromSmi(int other) native "Integer_bitAndFromInteger";
   int _bitAndFromInteger(int other) native "Integer_bitAndFromInteger";
   int _bitOrFromInteger(int other) native "Integer_bitOrFromInteger";
   int _bitXorFromInteger(int other) native "Integer_bitXorFromInteger";
   int _addFromInteger(int other) native "Integer_addFromInteger";
   int _subFromInteger(int other) native "Integer_subFromInteger";
   int _mulFromInteger(int other) native "Integer_mulFromInteger";
   int _truncDivFromInteger(int other) native "Integer_truncDivFromInteger";
   int _moduloFromInteger(int other) native "Integer_moduloFromInteger";
   int _remainderFromInteger(int other) {
     return other - (other ~/ this) * this;
@@ skipping 329 matching lines @@
 class _Smi extends _IntegerImplementation implements int {
   factory _Smi._uninstantiable() {
     throw new UnsupportedError(
         "_Smi can only be allocated by the VM");
   }
   int get _identityHashCode => this;
   int get hashCode => this;
   int operator ~() native "Smi_bitNegate";
   int get bitLength native "Smi_bitLength";
 
+  int operator &(int other) => other._bitAndFromSmi(this);
+
+  int _bitAndFromSmi(int other) native "Smi_bitAndFromSmi";
   int _shrFromInt(int other) native "Smi_shrFromInt";
   int _shlFromInt(int other) native "Smi_shlFromInt";
 
   /**
    * The digits of '00', '01', ... '99' as a single array.
    *
    * Get the digits of `n`, with `0 <= n < 100`, as
    * `_digitTable[n * 2]` and `_digitTable[n * 2 + 1]`.
    */
   static const _digitTable = const [
@@ skipping 177 matching lines @@
 class _Mint extends _IntegerImplementation implements int {
   factory _Mint._uninstantiable() {
     throw new UnsupportedError(
         "_Mint can only be allocated by the VM");
   }
   int get _identityHashCode => this;
   int get hashCode => this;
   int operator ~() native "Mint_bitNegate";
   int get bitLength native "Mint_bitLength";
 
+  int _bitAndFromSmi(int other) => _bitAndFromInteger(other);
+
   // Shift by mint exceeds range that can be handled by the VM.
   int _shrFromInt(int other) {
     if (other < 0) {
       return -1;
     } else {
       return 0;
     }
   }
   int _shlFromInt(int other) native "Mint_shlFromInt";
 }