[Interpreter] Add function literal support.

test/cctest/interpreter/test-bytecode-generator.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.
 
 #include "src/v8.h"
 
 #include "src/compiler.h"
 #include "src/interpreter/bytecode-array-iterator.h"
 #include "src/interpreter/bytecode-generator.h"
 #include "src/interpreter/interpreter.h"
@@ skipping 103 matching lines @@
       CcTest::i_isolate()->factory()->NewStringFromAsciiChecked(expected);
   CHECK(String::cast(actual)->Equals(*expected_string));
 }
 
 
 static void CheckConstant(Handle<Object> expected, Object* actual) {
   CHECK(actual == *expected || expected->StrictEquals(actual));
 }
 
 
+static void CheckConstant(InstanceType expected, Object* actual) {
+  CHECK_EQ(expected, HeapObject::cast(actual)->map()->instance_type());
+}
+
+
 template <typename T>
 static void CheckBytecodeArrayEqual(struct ExpectedSnippet<T> expected,
                                     Handle<BytecodeArray> actual,
                                     bool has_unknown = false) {
   CHECK_EQ(actual->frame_size(), expected.frame_size);
   CHECK_EQ(actual->parameter_count(), expected.parameter_count);
   CHECK_EQ(actual->length(), expected.bytecode_length);
   if (expected.constant_count != -1) {
     if (expected.constant_count == 0) {
       CHECK_EQ(actual->constant_pool(), CcTest::heap()->empty_fixed_array());
@@ skipping 1672 matching lines @@
   };
 
   for (size_t i = 0; i < arraysize(snippets); i++) {
     Handle<BytecodeArray> bytecode_array =
         helper.MakeBytecodeForFunctionBody(snippets[i].code_snippet);
     CheckBytecodeArrayEqual(snippets[i], bytecode_array);
   }
 }
 
 
+TEST(FunctionLiterals) {
+  InitializedHandleScope handle_scope;
+  BytecodeGeneratorHelper helper;
+
+  ExpectedSnippet<InstanceType> snippets[] = {
+      {"return function(){ }",
+       0,
+       1,
+       5,
+       {
+           B(LdaConstant), U8(0),    //
+           B(CreateClosure), U8(0),  //
+           B(Return)                 //
+       },
+       1,
+       {InstanceType::SHARED_FUNCTION_INFO_TYPE}},
+      {"return (function(){ })()",
+       2 * kPointerSize,
+       1,
+       14,
+       {
+           B(LdaUndefined),             //
+           B(Star), R(1),               //
+           B(LdaConstant), U8(0),       //
+           B(CreateClosure), U8(0),     //
+           B(Star), R(0),               //
+           B(Call), R(0), R(1), U8(0),  //
+           B(Return)                    //
+       },
+       1,
+       {InstanceType::SHARED_FUNCTION_INFO_TYPE}},
+      {"return (function(x){ return x; })(1)",
+       3 * kPointerSize,
+       1,
+       18,
+       {
+           B(LdaUndefined),             //
+           B(Star), R(1),               //
+           B(LdaConstant), U8(0),       //
+           B(CreateClosure), U8(0),     //
+           B(Star), R(0),               //
+           B(LdaSmi8), U8(1),           //
+           B(Star), R(2),               //
+           B(Call), R(0), R(1), U8(1),  //
+           B(Return)                    //
+       },
+       1,
+       {InstanceType::SHARED_FUNCTION_INFO_TYPE}},
+  };
+
+  for (size_t i = 0; i < arraysize(snippets); i++) {
+    Handle<BytecodeArray> bytecode_array =
+        helper.MakeBytecodeForFunctionBody(snippets[i].code_snippet);
+    CheckBytecodeArrayEqual(snippets[i], bytecode_array);
+  }
+}
+
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8