vm: Generate 'and' instruction for Smi values.

runtime/lib/integers.cc

 // 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.
 
 #include "vm/bootstrap_natives.h"
 
 #include "include/dart_api.h"
 #include "vm/dart_entry.h"
 #include "vm/dart_api_impl.h"
 #include "vm/exceptions.h"
@@ skipping 272 matching lines @@
       // Overflow in shift, use Bigints
       return Integer::null();
     }
   } else {
     ASSERT(value.IsBigint());
   }
   return Integer::null();
 }
 
 
+DEFINE_NATIVE_ENTRY(Smi_bitAndFromSmi, 2) {
+  const Smi& left = Smi::CheckedHandle(arguments->NativeArgAt(0));
+  GET_NON_NULL_NATIVE_ARGUMENT(Smi, right, arguments->NativeArgAt(1));
+  if (FLAG_trace_intrinsified_natives) {
+    OS::Print("Smi_bitAndFromSmi %s & %s\n",
+        left.ToCString(), right.ToCString());

[srdjan, 2016/04/29 17:35:31]

Please use THR_Print instead

+  }
+  const Smi& left_value = Smi::Cast(left);
+  const Smi& right_value = Smi::Cast(right);
+  return Smi::New(left_value.Value() & right_value.Value());
+}
+
+
 DEFINE_NATIVE_ENTRY(Smi_shrFromInt, 2) {
   const Smi& amount = Smi::CheckedHandle(arguments->NativeArgAt(0));
   GET_NON_NULL_NATIVE_ARGUMENT(Integer, value, arguments->NativeArgAt(1));
   ASSERT(CheckInteger(amount));
   ASSERT(CheckInteger(value));
   const Integer& result = Integer::Handle(
       ShiftOperationHelper(Token::kSHR, value, amount));
   // A null result indicates that a bigint operation is required.
   return result.IsNull() ? result.raw() : result.AsValidInteger();
 }
@@ skipping 99 matching lines @@
 DEFINE_NATIVE_ENTRY(Bigint_allocate, 4) {
   // First arg is null type arguments, since class Bigint is not parameterized.
   const Bool& neg = Bool::CheckedHandle(arguments->NativeArgAt(1));
   const Smi& used = Smi::CheckedHandle(arguments->NativeArgAt(2));
   const TypedData& digits = TypedData::CheckedHandle(arguments->NativeArgAt(3));
   ASSERT(!digits.IsNull());
   return Bigint::New(neg.value(), used.Value(), digits);
 }
 
 }  // namespace dart