[Interpreter] Make lazy compilation the default.

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 <fstream>
 
 #include "src/v8.h"
 
 #include "src/compiler.h"
 #include "src/interpreter/bytecode-array-iterator.h"
@@ skipping 2214 matching lines @@
   bool old_flag = FLAG_ignition_generators;
   FLAG_ignition_generators = true;
 
   InitializedIgnitionHandleScope scope;
   BytecodeExpectationsPrinter printer(CcTest::isolate(),
                                       ConstantPoolType::kMixed);
   printer.set_wrap(false);
   printer.set_test_function_name("f");
 
   const char* snippets[] = {
-      "function* f() { }\n",
+      "function* f() { }\n"
+      "f();\n",
 
-      "function* f() { yield 42 }\n",
+      "function* f() { yield 42 }\n"
+      "f();\n",
 
-      "function* f() { for (let x of [42]) yield x }\n",
+      "function* f() { for (let x of [42]) yield x }\n"
+      "f();\n",
   };
 
   CHECK(CompareTexts(BuildActual(printer, snippets),
                      LoadGolden("Generators.golden")));
 
   FLAG_ignition_generators = old_flag;
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8