[Interpreter] Add support for cast operators to bytecode graph builder and

test/cctest/compiler/test-run-bytecode-graph-builder.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // TODO(jochen): Remove this after the setting is turned on globally.
 #define V8_IMMINENT_DEPRECATION_WARNINGS
 
 #include <utility>
 
 #include "src/compiler/pipeline.h"
@@ skipping 632 matching lines @@
   size_t num_snippets = sizeof(snippets) / sizeof(snippets[0]);
   for (size_t i = 0; i < num_snippets; i++) {
     BytecodeGraphTester tester(isolate, zone, snippets[i].code_snippet);
     auto callable = tester.GetCallable<>();
     Handle<Object> return_value = callable().ToHandleChecked();
     CHECK(return_value->SameValue(*snippets[i].return_value()));
   }
 }
 
 
+TEST(BytecodeGraphBuilderCast) {
+  // TODO(mythria): tests for ToBoolean, ToObject, ToName, ToNumber.
+  // They need other unimplemented features to test.
+  // ToBoolean -> If
+  // ToObject -> ForIn
+  // ToNumber -> Inc/Dec
+  // ToName -> CreateObjectLiteral
+}
+
+
 TEST(BytecodeGraphBuilderLogicalNot) {
   HandleAndZoneScope scope;
   Isolate* isolate = scope.main_isolate();
   Zone* zone = scope.main_zone();
   Factory* factory = isolate->factory();
 
   ExpectedSnippet<1> snippets[] = {
       {"return !p1;",
        {factory->false_value(),
         BytecodeGraphTester::NewObject("({val : 10})")}},
@@ skipping 95 matching lines @@
     auto callable = tester.GetCallable<Handle<Object>>();
     Handle<Object> return_value =
         callable(snippets[i].parameter(0)).ToHandleChecked();
     CHECK(return_value->SameValue(*snippets[i].return_value()));
   }
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8