Use range information for optimizing integer boxing and fix bug in range analysis.

runtime/vm/object_test.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.
 
 // TODO(zra): Remove when tests are ready to enable.
 #include "platform/globals.h"
 
 #include "vm/assembler.h"
 #include "vm/bigint_operations.h"
 #include "vm/class_finalizer.h"
@@ skipping 267 matching lines @@
   smi_object = Object::null();
   EXPECT(!smi_object.IsSmi());
 
   EXPECT(smi.Equals(Smi::Handle(Smi::New(5))));
   EXPECT(!smi.Equals(Smi::Handle(Smi::New(6))));
   EXPECT(smi.Equals(smi));
   EXPECT(!smi.Equals(Smi::Handle()));
 
   EXPECT(Smi::IsValid(0));
   EXPECT(Smi::IsValid(-15));
+  EXPECT(Smi::IsValid(0xFFu));
   // Upper two bits must be either 00 or 11.
 #if defined(ARCH_IS_64_BIT)
   EXPECT(!Smi::IsValid(kMaxInt64));
   EXPECT(Smi::IsValid(0x3FFFFFFFFFFFFFFF));
-  EXPECT(Smi::IsValid(0xFFFFFFFFFFFFFFFF));
+  EXPECT(Smi::IsValid(-1));
+  EXPECT(!Smi::IsValid(0xFFFFFFFFFFFFFFFFu));
 #else
   EXPECT(!Smi::IsValid(kMaxInt32));
   EXPECT(Smi::IsValid(0x3FFFFFFF));
-  EXPECT(Smi::IsValid(0xFFFFFFFF));
+  EXPECT(Smi::IsValid(-1));
+  EXPECT(!Smi::IsValid(0xFFFFFFFFu));
 #endif
 
   EXPECT_EQ(5, smi.AsInt64Value());
   EXPECT_EQ(5.0, smi.AsDoubleValue());
 
   Smi& a = Smi::Handle(Smi::New(5));
   Smi& b = Smi::Handle(Smi::New(3));
   EXPECT_EQ(1, a.CompareWith(b));
   EXPECT_EQ(-1, b.CompareWith(a));
   EXPECT_EQ(0, a.CompareWith(a));
@@ skipping 3758 matching lines @@
   const Instance& a0 = Instance::Handle(Instance::New(clazz));
   const Instance& a1 = Instance::Handle(Instance::New(clazz));
   EXPECT(a0.raw() != a1.raw());
   EXPECT(a0.OperatorEquals(a0));
   EXPECT(a0.OperatorEquals(a1));
   EXPECT(a0.IsIdenticalTo(a0));
   EXPECT(!a0.IsIdenticalTo(a1));
 }
 
 }  // namespace dart