[Interpreter] Make ignition compiler eagerly.

test/cctest/interpreter/interpreter-tester.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 "test/cctest/interpreter/interpreter-tester.h"
 
 namespace v8 {
 namespace internal {
 namespace interpreter {
 
 MaybeHandle<Object> CallInterpreter(Isolate* isolate,
                                     Handle<JSFunction> function) {
   return Execution::Call(isolate, function,
                          isolate->factory()->undefined_value(), 0, nullptr);
 }
 
 InterpreterTester::InterpreterTester(
     Isolate* isolate, const char* source, MaybeHandle<BytecodeArray> bytecode,
     MaybeHandle<TypeFeedbackVector> feedback_vector, const char* filter)
     : isolate_(isolate),
       source_(source),
       bytecode_(bytecode),
       feedback_vector_(feedback_vector) {
   i::FLAG_ignition = true;
   i::FLAG_always_opt = false;
-  // Set ignition filter flag via SetFlagsFromString to avoid double-free
-  // (or potential leak with StrDup() based on ownership confusion).
-  ScopedVector<char> ignition_filter(64);
-  SNPrintF(ignition_filter, "--ignition-filter=%s", filter);
-  FlagList::SetFlagsFromString(ignition_filter.start(),
-                               ignition_filter.length());
   // Ensure handler table is generated.
   isolate->interpreter()->Initialize();
 }
 
 InterpreterTester::InterpreterTester(
     Isolate* isolate, Handle<BytecodeArray> bytecode,
     MaybeHandle<TypeFeedbackVector> feedback_vector, const char* filter)
     : InterpreterTester(isolate, nullptr, bytecode, feedback_vector, filter) {}
 
 InterpreterTester::InterpreterTester(Isolate* isolate, const char* source,
@@ skipping 28 matching lines @@
   return "function " + function_name() + "() {\n" + std::string(body) + "\n}";
 }
 
 std::string InterpreterTester::function_name() {
   return std::string(kFunctionName);
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8