Add signed/unsigned 8-bit and 16-bit Representations

test/cctest/test-representation.cc

Index: test/cctest/test-representation.cc
diff --git a/test/cctest/test-representation.cc b/test/cctest/test-representation.cc
new file mode 100644
index 0000000000000000000000000000000000000000..15321f3ce794e8534518f5d41ec5a25047506d82
--- /dev/null
+++ b/test/cctest/test-representation.cc
@@ -0,0 +1,124 @@
+// Copyright 2013 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
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "cctest.h"
+#include "types.h"
+#include "property-details.h"
+
+using namespace v8::internal;
+
+
+void TestPairPositive(Representation more_general,
+              Representation less_general) {
+  CHECK(more_general.is_more_general_than(less_general));
+}
+
+
+void TestPairNegative(Representation more_general,
+              Representation less_general) {
+  CHECK(!more_general.is_more_general_than(less_general));
+}
+
+
+TEST(RepresentationMoreGeneralThan) {
+  TestPairNegative(Representation::None(), Representation::None());
+  TestPairPositive(Representation::Integer8(), Representation::None());
+  TestPairPositive(Representation::UInteger8(), Representation::None());
+  TestPairPositive(Representation::Integer16(), Representation::None());
+  TestPairPositive(Representation::UInteger16(), Representation::None());
+  TestPairPositive(Representation::Smi(), Representation::None());
+  TestPairPositive(Representation::Integer32(), Representation::None());
+  TestPairPositive(Representation::HeapObject(), Representation::None());
+  TestPairPositive(Representation::Double(), Representation::None());
+  TestPairPositive(Representation::Tagged(), Representation::None());
+
+  TestPairNegative(Representation::None(), Representation::Integer8());
+  TestPairNegative(Representation::Integer8(), Representation::Integer8());
+  TestPairNegative(Representation::UInteger8(), Representation::Integer8());
+  TestPairPositive(Representation::Integer16(), Representation::Integer8());
+  TestPairPositive(Representation::UInteger16(), Representation::Integer8());
+  TestPairPositive(Representation::Smi(), Representation::Integer8());
+  TestPairPositive(Representation::Integer32(), Representation::Integer8());
+  TestPairNegative(Representation::HeapObject(), Representation::Integer8());
+  TestPairPositive(Representation::Double(), Representation::Integer8());
+  TestPairPositive(Representation::Tagged(), Representation::Integer8());
+
+  TestPairNegative(Representation::None(), Representation::UInteger8());
+  TestPairNegative(Representation::Integer8(), Representation::UInteger8());
+  TestPairNegative(Representation::UInteger8(), Representation::UInteger8());
+  TestPairPositive(Representation::Integer16(), Representation::UInteger8());
+  TestPairPositive(Representation::UInteger16(), Representation::UInteger8());
+  TestPairPositive(Representation::Smi(), Representation::UInteger8());
+  TestPairPositive(Representation::Integer32(), Representation::UInteger8());
+  TestPairNegative(Representation::HeapObject(), Representation::UInteger8());
+  TestPairPositive(Representation::Double(), Representation::UInteger8());
+  TestPairPositive(Representation::Tagged(), Representation::UInteger8());
+
+  TestPairNegative(Representation::None(), Representation::Integer16());
+  TestPairNegative(Representation::Integer8(), Representation::Integer16());
+  TestPairNegative(Representation::UInteger8(), Representation::Integer16());
+  TestPairNegative(Representation::Integer16(), Representation::Integer16());
+  TestPairNegative(Representation::UInteger16(), Representation::Integer16());
+  TestPairPositive(Representation::Smi(), Representation::Integer16());
+  TestPairPositive(Representation::Integer32(), Representation::Integer16());
+  TestPairNegative(Representation::HeapObject(), Representation::Integer16());
+  TestPairPositive(Representation::Double(), Representation::Integer16());
+  TestPairPositive(Representation::Tagged(), Representation::Integer16());
+
+  TestPairNegative(Representation::None(), Representation::UInteger16());
+  TestPairNegative(Representation::Integer8(), Representation::UInteger16());
+  TestPairNegative(Representation::UInteger8(), Representation::UInteger16());
+  TestPairNegative(Representation::Integer16(), Representation::UInteger16());
+  TestPairNegative(Representation::UInteger16(), Representation::UInteger16());
+  TestPairPositive(Representation::Smi(), Representation::UInteger16());
+  TestPairPositive(Representation::Integer32(), Representation::UInteger16());
+  TestPairNegative(Representation::HeapObject(), Representation::UInteger16());
+  TestPairPositive(Representation::Double(), Representation::UInteger16());
+  TestPairPositive(Representation::Tagged(), Representation::UInteger16());
+
+  TestPairNegative(Representation::None(), Representation::Smi());
+  TestPairNegative(Representation::Integer8(), Representation::Smi());
+  TestPairNegative(Representation::UInteger8(), Representation::Smi());
+  TestPairNegative(Representation::Integer16(), Representation::Smi());
+  TestPairNegative(Representation::UInteger16(), Representation::Smi());
+  TestPairNegative(Representation::Smi(), Representation::Smi());
+  TestPairPositive(Representation::Integer32(), Representation::Smi());
+  TestPairNegative(Representation::HeapObject(), Representation::Smi());
+  TestPairPositive(Representation::Double(), Representation::Smi());
+  TestPairPositive(Representation::Tagged(), Representation::Smi());
+
+  TestPairNegative(Representation::None(), Representation::Integer32());
+  TestPairNegative(Representation::Integer8(), Representation::Integer32());
+  TestPairNegative(Representation::UInteger8(), Representation::Integer32());
+  TestPairNegative(Representation::Integer16(), Representation::Integer32());
+  TestPairNegative(Representation::UInteger16(), Representation::Integer32());
+  TestPairNegative(Representation::Smi(), Representation::Integer32());
+  TestPairNegative(Representation::Integer32(), Representation::Integer32());
+  TestPairNegative(Representation::HeapObject(), Representation::Integer32());
+  TestPairPositive(Representation::Double(), Representation::Integer32());
+  TestPairPositive(Representation::Tagged(), Representation::Integer32());
+}