[Interpreter] Enable runtime profiler support for Ignition.

src/interpreter/interpreter.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/interpreter/interpreter.h"
 
 #include "src/ast/prettyprinter.h"
 #include "src/code-factory.h"
 #include "src/compiler.h"
 #include "src/factory.h"
@@ skipping 31 matching lines @@
   }
   BYTECODE_LIST(GENERATE_CODE)
 #undef GENERATE_CODE
 }
 
 void Interpreter::IterateDispatchTable(ObjectVisitor* v) {
   v->VisitPointers(&dispatch_table_[0],
                    &dispatch_table_[0] + kDispatchTableSize);
 }
 
+// static
+int Interpreter::InterruptBudget() {
+  // TODO(ignition): Tune code size multiplier.
+  const int kCodeSizeMultiplier = 32;
+  return FLAG_interrupt_budget * kCodeSizeMultiplier;
+}
+
 bool Interpreter::MakeBytecode(CompilationInfo* info) {
   if (FLAG_print_bytecode || FLAG_print_source || FLAG_print_ast) {
     OFStream os(stdout);
     base::SmartArrayPointer<char> name = info->GetDebugName();
     os << "[generating bytecode for function: " << info->GetDebugName().get()
        << "]" << std::endl
        << std::flush;
   }
 
 #ifdef DEBUG
@@ skipping 1749 matching lines @@
   Node* index = __ LoadRegister(index_reg);
   Node* context = __ GetContext();
   Node* result = __ CallRuntime(Runtime::kForInStep, context, index);
   __ SetAccumulator(result);
   __ Dispatch();
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8