[Interpreter] Support compiling for baseline on return from interpreted function.

test/cctest/test-compiler.cc

Index: test/cctest/test-compiler.cc
diff --git a/test/cctest/test-compiler.cc b/test/cctest/test-compiler.cc
index 18f00097cdedd10fc3835d2f063bb3b4c7114fb3..38c02a0f461c394f7042e0e1b69a0579b98cd43a 100644
--- a/test/cctest/test-compiler.cc
+++ b/test/cctest/test-compiler.cc
@@ -32,6 +32,7 @@
 
 #include "src/compiler.h"
 #include "src/disasm.h"
+#include "src/interpreter/interpreter.h"
 #include "src/parsing/parser.h"
 #include "test/cctest/cctest.h"
 
@@ -757,3 +758,45 @@ TEST(SplitConstantsInFullCompiler) {
   CheckCodeForUnsafeLiteral(GetJSFunction(context->Global(), "f"));
 }
 #endif
+
+static void IsBaselineCompiled(
+    const v8::FunctionCallbackInfo<v8::Value>& args) {
+  Handle<Object> object = v8::Utils::OpenHandle(*args[0]);
+  Handle<JSFunction> function = Handle<JSFunction>::cast(object);
+  bool is_baseline = function->shared()->code()->kind() == Code::FUNCTION;
+  return args.GetReturnValue().Set(is_baseline);
+}
+
+static void InstallIsBaselineCompiledHelper(v8::Isolate* isolate) {
+  v8::Local<v8::Context> context = isolate->GetCurrentContext();
+  v8::Local<v8::FunctionTemplate> t =
+      v8::FunctionTemplate::New(isolate, IsBaselineCompiled);
+  CHECK(context->Global()
+            ->Set(context, v8_str("IsBaselineCompiled"),
+                  t->GetFunction(context).ToLocalChecked())
+            .FromJust());
+}
+
+TEST(IgnitionBaselineOnReturn) {
+  FLAG_allow_natives_syntax = true;
+  FLAG_always_opt = false;
+  CcTest::InitializeVM();
+  FLAG_ignition = true;
+  reinterpret_cast<i::Isolate*>(CcTest::isolate())->interpreter()->Initialize();
+  v8::HandleScope scope(CcTest::isolate());
+  InstallIsBaselineCompiledHelper(CcTest::isolate());
+
+  CompileRun(
+      "var is_baseline_in_function, is_baseline_after_return;\n"
+      "var return_val;\n"
+      "function f() {\n"
+      "  %CompileBaseline(f);\n"
+      "  is_baseline_in_function = IsBaselineCompiled(f);\n"
+      "  return 1234;\n"
+      "};\n"
+      "return_val = f();\n"
+      "is_baseline_after_return = IsBaselineCompiled(f);\n");
+  CHECK_EQ(false, GetGlobalProperty("is_baseline_in_function")->BooleanValue());
+  CHECK_EQ(true, GetGlobalProperty("is_baseline_after_return")->BooleanValue());
+  CHECK_EQ(1234.0, GetGlobalProperty("return_val")->Number());
+}