1// Copyright 2014 the V8 project authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "src/v8.h"
6
7#include "test/cctest/cctest.h"
8#include "test/cctest/compiler/function-tester.h"
9
10using namespace v8;
11using namespace v8::internal;
12using namespace v8::internal::compiler;
13
14#if V8_TURBOFAN_TARGET
15
16static void IsOptimized(const FunctionCallbackInfo<v8::Value>& args) {
17  JavaScriptFrameIterator it(CcTest::i_isolate());
18  JavaScriptFrame* frame = it.frame();
19  return args.GetReturnValue().Set(frame->is_optimized());
20}
21
22
23static void InstallIsOptimizedHelper(v8::Isolate* isolate) {
24  Local<v8::Context> context = isolate->GetCurrentContext();
25  Local<v8::FunctionTemplate> t = FunctionTemplate::New(isolate, IsOptimized);
26  context->Global()->Set(v8_str("IsOptimized"), t->GetFunction());
27}
28
29
30TEST(TurboSimpleDeopt) {
31  FLAG_allow_natives_syntax = true;
32  FLAG_turbo_deoptimization = true;
33
34  FunctionTester T(
35      "(function f(a) {"
36      "var b = 1;"
37      "if (!IsOptimized()) return 0;"
38      "%DeoptimizeFunction(f);"
39      "if (IsOptimized()) return 0;"
40      "return a + b; })");
41
42  InstallIsOptimizedHelper(CcTest::isolate());
43  T.CheckCall(T.Val(2), T.Val(1));
44}
45
46
47TEST(TurboSimpleDeoptInExpr) {
48  FLAG_allow_natives_syntax = true;
49  FLAG_turbo_deoptimization = true;
50
51  FunctionTester T(
52      "(function f(a) {"
53      "var b = 1;"
54      "var c = 2;"
55      "if (!IsOptimized()) return 0;"
56      "var d = b + (%DeoptimizeFunction(f), c);"
57      "if (IsOptimized()) return 0;"
58      "return d + a; })");
59
60  InstallIsOptimizedHelper(CcTest::isolate());
61  T.CheckCall(T.Val(6), T.Val(3));
62}
63
64#endif
65
66TEST(TurboTrivialDeopt) {
67  FLAG_allow_natives_syntax = true;
68  FLAG_turbo_deoptimization = true;
69
70  FunctionTester T(
71      "(function foo() {"
72      "%DeoptimizeFunction(foo);"
73      "return 1; })");
74
75  T.CheckCall(T.Val(1));
76}
77