Line data Source code
1 : // Copyright 2012 the V8 project authors. All rights reserved.
2 : // Redistribution and use in source and binary forms, with or without
3 : // modification, are permitted provided that the following conditions are
4 : // met:
5 : //
6 : // * Redistributions of source code must retain the above copyright
7 : // notice, this list of conditions and the following disclaimer.
8 : // * Redistributions in binary form must reproduce the above
9 : // copyright notice, this list of conditions and the following
10 : // disclaimer in the documentation and/or other materials provided
11 : // with the distribution.
12 : // * Neither the name of Google Inc. nor the names of its
13 : // contributors may be used to endorse or promote products derived
14 : // from this software without specific prior written permission.
15 : //
16 : // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 : // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 : // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 : // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 : // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 : // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 : // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 : // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 : // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 : // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 : // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 :
28 : #include <stdlib.h>
29 : #include <wchar.h>
30 :
31 : #include "src/v8.h"
32 :
33 : #include "src/api-inl.h"
34 : #include "src/compilation-cache.h"
35 : #include "src/compiler.h"
36 : #include "src/disasm.h"
37 : #include "src/heap/factory.h"
38 : #include "src/heap/spaces.h"
39 : #include "src/interpreter/interpreter.h"
40 : #include "src/objects-inl.h"
41 : #include "src/objects/allocation-site-inl.h"
42 : #include "test/cctest/cctest.h"
43 :
44 : namespace v8 {
45 : namespace internal {
46 :
47 60 : static Handle<Object> GetGlobalProperty(const char* name) {
48 : Isolate* isolate = CcTest::i_isolate();
49 180 : return JSReceiver::GetProperty(isolate, isolate->global_object(), name)
50 60 : .ToHandleChecked();
51 : }
52 :
53 20 : static void SetGlobalProperty(const char* name, Object value) {
54 : Isolate* isolate = CcTest::i_isolate();
55 : Handle<Object> object(value, isolate);
56 : Handle<String> internalized_name =
57 20 : isolate->factory()->InternalizeUtf8String(name);
58 40 : Handle<JSObject> global(isolate->context()->global_object(), isolate);
59 40 : Runtime::SetObjectProperty(isolate, global, internalized_name, object,
60 20 : StoreOrigin::kMaybeKeyed, Just(kDontThrow))
61 : .Check();
62 20 : }
63 :
64 40 : static Handle<JSFunction> Compile(const char* source) {
65 : Isolate* isolate = CcTest::i_isolate();
66 80 : Handle<String> source_code = isolate->factory()->NewStringFromUtf8(
67 40 : CStrVector(source)).ToHandleChecked();
68 : Handle<SharedFunctionInfo> shared =
69 80 : Compiler::GetSharedFunctionInfoForScript(
70 : isolate, source_code, Compiler::ScriptDetails(),
71 : v8::ScriptOriginOptions(), nullptr, nullptr,
72 : v8::ScriptCompiler::kNoCompileOptions,
73 40 : ScriptCompiler::kNoCacheNoReason, NOT_NATIVES_CODE)
74 40 : .ToHandleChecked();
75 : return isolate->factory()->NewFunctionFromSharedFunctionInfo(
76 80 : shared, isolate->native_context());
77 : }
78 :
79 :
80 5 : static double Inc(Isolate* isolate, int x) {
81 : const char* source = "result = %d + 1;";
82 : EmbeddedVector<char, 512> buffer;
83 5 : SNPrintF(buffer, source, x);
84 :
85 5 : Handle<JSFunction> fun = Compile(buffer.start());
86 5 : if (fun.is_null()) return -1;
87 :
88 10 : Handle<JSObject> global(isolate->context()->global_object(), isolate);
89 10 : Execution::Call(isolate, fun, global, 0, nullptr).Check();
90 10 : return GetGlobalProperty("result")->Number();
91 : }
92 :
93 :
94 26644 : TEST(Inc) {
95 5 : CcTest::InitializeVM();
96 10 : v8::HandleScope scope(CcTest::isolate());
97 5 : CHECK_EQ(4.0, Inc(CcTest::i_isolate(), 3));
98 5 : }
99 :
100 :
101 5 : static double Add(Isolate* isolate, int x, int y) {
102 5 : Handle<JSFunction> fun = Compile("result = x + y;");
103 5 : if (fun.is_null()) return -1;
104 :
105 5 : SetGlobalProperty("x", Smi::FromInt(x));
106 5 : SetGlobalProperty("y", Smi::FromInt(y));
107 10 : Handle<JSObject> global(isolate->context()->global_object(), isolate);
108 10 : Execution::Call(isolate, fun, global, 0, nullptr).Check();
109 10 : return GetGlobalProperty("result")->Number();
110 : }
111 :
112 :
113 26644 : TEST(Add) {
114 5 : CcTest::InitializeVM();
115 10 : v8::HandleScope scope(CcTest::isolate());
116 5 : CHECK_EQ(5.0, Add(CcTest::i_isolate(), 2, 3));
117 5 : }
118 :
119 :
120 5 : static double Abs(Isolate* isolate, int x) {
121 5 : Handle<JSFunction> fun = Compile("if (x < 0) result = -x; else result = x;");
122 5 : if (fun.is_null()) return -1;
123 :
124 5 : SetGlobalProperty("x", Smi::FromInt(x));
125 10 : Handle<JSObject> global(isolate->context()->global_object(), isolate);
126 10 : Execution::Call(isolate, fun, global, 0, nullptr).Check();
127 10 : return GetGlobalProperty("result")->Number();
128 : }
129 :
130 :
131 26644 : TEST(Abs) {
132 5 : CcTest::InitializeVM();
133 10 : v8::HandleScope scope(CcTest::isolate());
134 5 : CHECK_EQ(3.0, Abs(CcTest::i_isolate(), -3));
135 5 : }
136 :
137 :
138 5 : static double Sum(Isolate* isolate, int n) {
139 : Handle<JSFunction> fun =
140 5 : Compile("s = 0; while (n > 0) { s += n; n -= 1; }; result = s;");
141 5 : if (fun.is_null()) return -1;
142 :
143 5 : SetGlobalProperty("n", Smi::FromInt(n));
144 10 : Handle<JSObject> global(isolate->context()->global_object(), isolate);
145 10 : Execution::Call(isolate, fun, global, 0, nullptr).Check();
146 10 : return GetGlobalProperty("result")->Number();
147 : }
148 :
149 :
150 26644 : TEST(Sum) {
151 5 : CcTest::InitializeVM();
152 10 : v8::HandleScope scope(CcTest::isolate());
153 5 : CHECK_EQ(5050.0, Sum(CcTest::i_isolate(), 100));
154 5 : }
155 :
156 :
157 26644 : TEST(Print) {
158 10 : v8::HandleScope scope(CcTest::isolate());
159 10 : v8::Local<v8::Context> context = CcTest::NewContext({PRINT_EXTENSION_ID});
160 : v8::Context::Scope context_scope(context);
161 : const char* source = "for (n = 0; n < 100; ++n) print(n, 1, 2);";
162 5 : Handle<JSFunction> fun = Compile(source);
163 5 : if (fun.is_null()) return;
164 10 : Handle<JSObject> global(CcTest::i_isolate()->context()->global_object(),
165 : fun->GetIsolate());
166 10 : Execution::Call(CcTest::i_isolate(), fun, global, 0, nullptr).Check();
167 : }
168 :
169 :
170 : // The following test method stems from my coding efforts today. It
171 : // tests all the functionality I have added to the compiler today
172 26644 : TEST(Stuff) {
173 5 : CcTest::InitializeVM();
174 10 : v8::HandleScope scope(CcTest::isolate());
175 : const char* source =
176 : "r = 0;\n"
177 : "a = new Object;\n"
178 : "if (a == a) r+=1;\n" // 1
179 : "if (a != new Object()) r+=2;\n" // 2
180 : "a.x = 42;\n"
181 : "if (a.x == 42) r+=4;\n" // 4
182 : "function foo() { var x = 87; return x; }\n"
183 : "if (foo() == 87) r+=8;\n" // 8
184 : "function bar() { var x; x = 99; return x; }\n"
185 : "if (bar() == 99) r+=16;\n" // 16
186 : "function baz() { var x = 1, y, z = 2; y = 3; return x + y + z; }\n"
187 : "if (baz() == 6) r+=32;\n" // 32
188 : "function Cons0() { this.x = 42; this.y = 87; }\n"
189 : "if (new Cons0().x == 42) r+=64;\n" // 64
190 : "if (new Cons0().y == 87) r+=128;\n" // 128
191 : "function Cons2(x, y) { this.sum = x + y; }\n"
192 : "if (new Cons2(3,4).sum == 7) r+=256;"; // 256
193 :
194 5 : Handle<JSFunction> fun = Compile(source);
195 5 : CHECK(!fun.is_null());
196 10 : Handle<JSObject> global(CcTest::i_isolate()->context()->global_object(),
197 : fun->GetIsolate());
198 10 : Execution::Call(CcTest::i_isolate(), fun, global, 0, nullptr).Check();
199 10 : CHECK_EQ(511.0, GetGlobalProperty("r")->Number());
200 5 : }
201 :
202 :
203 26644 : TEST(UncaughtThrow) {
204 5 : CcTest::InitializeVM();
205 10 : v8::HandleScope scope(CcTest::isolate());
206 :
207 : const char* source = "throw 42;";
208 5 : Handle<JSFunction> fun = Compile(source);
209 5 : CHECK(!fun.is_null());
210 : Isolate* isolate = fun->GetIsolate();
211 10 : Handle<JSObject> global(isolate->context()->global_object(), isolate);
212 10 : CHECK(Execution::Call(isolate, fun, global, 0, nullptr).is_null());
213 5 : CHECK_EQ(42.0, isolate->pending_exception()->Number());
214 5 : }
215 :
216 :
217 : // Tests calling a builtin function from C/C++ code, and the builtin function
218 : // performs GC. It creates a stack frame looks like following:
219 : // | C (PerformGC) |
220 : // | JS-to-C |
221 : // | JS |
222 : // | C-to-JS |
223 26644 : TEST(C2JSFrames) {
224 5 : FLAG_expose_gc = true;
225 10 : v8::HandleScope scope(CcTest::isolate());
226 : v8::Local<v8::Context> context =
227 10 : CcTest::NewContext({PRINT_EXTENSION_ID, GC_EXTENSION_ID});
228 : v8::Context::Scope context_scope(context);
229 :
230 : const char* source = "function foo(a) { gc(), print(a); }";
231 :
232 5 : Handle<JSFunction> fun0 = Compile(source);
233 5 : CHECK(!fun0.is_null());
234 : Isolate* isolate = fun0->GetIsolate();
235 :
236 : // Run the generated code to populate the global object with 'foo'.
237 10 : Handle<JSObject> global(isolate->context()->global_object(), isolate);
238 10 : Execution::Call(isolate, fun0, global, 0, nullptr).Check();
239 :
240 : Handle<Object> fun1 =
241 15 : JSReceiver::GetProperty(isolate, isolate->global_object(), "foo")
242 : .ToHandleChecked();
243 5 : CHECK(fun1->IsJSFunction());
244 :
245 : Handle<Object> argv[] = {
246 5 : isolate->factory()->InternalizeOneByteString(StaticCharVector("hello"))};
247 10 : Execution::Call(isolate,
248 : Handle<JSFunction>::cast(fun1),
249 : global,
250 : arraysize(argv),
251 5 : argv).Check();
252 5 : }
253 :
254 :
255 : // Regression 236. Calling InitLineEnds on a Script with undefined
256 : // source resulted in crash.
257 26644 : TEST(Regression236) {
258 5 : CcTest::InitializeVM();
259 : Isolate* isolate = CcTest::i_isolate();
260 : Factory* factory = isolate->factory();
261 10 : v8::HandleScope scope(CcTest::isolate());
262 :
263 5 : Handle<Script> script = factory->NewScript(factory->empty_string());
264 15 : script->set_source(ReadOnlyRoots(CcTest::heap()).undefined_value());
265 5 : CHECK_EQ(-1, Script::GetLineNumber(script, 0));
266 5 : CHECK_EQ(-1, Script::GetLineNumber(script, 100));
267 5 : CHECK_EQ(-1, Script::GetLineNumber(script, -1));
268 5 : }
269 :
270 :
271 26644 : TEST(GetScriptLineNumber) {
272 5 : LocalContext context;
273 10 : v8::HandleScope scope(CcTest::isolate());
274 5 : v8::ScriptOrigin origin = v8::ScriptOrigin(v8_str("test"));
275 5 : const char function_f[] = "function f() {}";
276 : const int max_rows = 1000;
277 : const int buffer_size = max_rows + sizeof(function_f);
278 : ScopedVector<char> buffer(buffer_size);
279 : memset(buffer.start(), '\n', buffer_size - 1);
280 5 : buffer[buffer_size - 1] = '\0';
281 :
282 10005 : for (int i = 0; i < max_rows; ++i) {
283 5000 : if (i > 0)
284 9990 : buffer[i - 1] = '\n';
285 5000 : MemCopy(&buffer[i], function_f, sizeof(function_f) - 1);
286 5000 : v8::Local<v8::String> script_body = v8_str(buffer.start());
287 5000 : v8::Script::Compile(context.local(), script_body, &origin)
288 : .ToLocalChecked()
289 5000 : ->Run(context.local())
290 : .ToLocalChecked();
291 : v8::Local<v8::Function> f = v8::Local<v8::Function>::Cast(
292 20000 : context->Global()->Get(context.local(), v8_str("f")).ToLocalChecked());
293 5000 : CHECK_EQ(i, f->GetScriptLineNumber());
294 : }
295 5 : }
296 :
297 :
298 26644 : TEST(FeedbackVectorPreservedAcrossRecompiles) {
299 7 : if (i::FLAG_always_opt || !i::FLAG_opt) return;
300 3 : i::FLAG_allow_natives_syntax = true;
301 3 : CcTest::InitializeVM();
302 3 : if (!CcTest::i_isolate()->use_optimizer()) return;
303 6 : v8::HandleScope scope(CcTest::isolate());
304 3 : v8::Local<v8::Context> context = CcTest::isolate()->GetCurrentContext();
305 :
306 : // Make sure function f has a call that uses a type feedback slot.
307 : CompileRun("function fun() {};"
308 : "fun1 = fun;"
309 : "function f(a) { a(); } f(fun1);");
310 :
311 : Handle<JSFunction> f = Handle<JSFunction>::cast(
312 : v8::Utils::OpenHandle(*v8::Local<v8::Function>::Cast(
313 12 : CcTest::global()->Get(context, v8_str("f")).ToLocalChecked())));
314 :
315 : // Verify that we gathered feedback.
316 : Handle<FeedbackVector> feedback_vector(f->feedback_vector(), f->GetIsolate());
317 3 : CHECK(!feedback_vector->is_empty());
318 : FeedbackSlot slot_for_a(0);
319 : MaybeObject object = feedback_vector->Get(slot_for_a);
320 : {
321 : HeapObject heap_object;
322 3 : CHECK(object->GetHeapObjectIfWeak(&heap_object));
323 3 : CHECK(heap_object->IsJSFunction());
324 : }
325 :
326 : CompileRun("%OptimizeFunctionOnNextCall(f); f(fun1);");
327 :
328 : // Verify that the feedback is still "gathered" despite a recompilation
329 : // of the full code.
330 3 : CHECK(f->IsOptimized());
331 : object = f->feedback_vector()->Get(slot_for_a);
332 : {
333 : HeapObject heap_object;
334 3 : CHECK(object->GetHeapObjectIfWeak(&heap_object));
335 3 : CHECK(heap_object->IsJSFunction());
336 : }
337 : }
338 :
339 :
340 26644 : TEST(FeedbackVectorUnaffectedByScopeChanges) {
341 5 : if (i::FLAG_always_opt || !i::FLAG_lazy || i::FLAG_lite_mode) {
342 1 : return;
343 : }
344 4 : CcTest::InitializeVM();
345 8 : v8::HandleScope scope(CcTest::isolate());
346 4 : v8::Local<v8::Context> context = CcTest::isolate()->GetCurrentContext();
347 :
348 : CompileRun("function builder() {"
349 : " call_target = function() { return 3; };"
350 : " return (function() {"
351 : " eval('');"
352 : " return function() {"
353 : " 'use strict';"
354 : " call_target();"
355 : " }"
356 : " })();"
357 : "}"
358 : "morphing_call = builder();");
359 :
360 : Handle<JSFunction> f = Handle<JSFunction>::cast(v8::Utils::OpenHandle(
361 8 : *v8::Local<v8::Function>::Cast(CcTest::global()
362 12 : ->Get(context, v8_str("morphing_call"))
363 : .ToLocalChecked())));
364 :
365 : // If we are compiling lazily then it should not be compiled, and so no
366 : // feedback vector allocated yet.
367 4 : CHECK(!f->shared()->is_compiled());
368 :
369 : CompileRun("morphing_call();");
370 :
371 : // Now a feedback vector is allocated.
372 4 : CHECK(f->shared()->is_compiled());
373 4 : CHECK(!f->feedback_vector()->is_empty());
374 : }
375 :
376 : // Test that optimized code for different closures is actually shared.
377 26644 : TEST(OptimizedCodeSharing1) {
378 5 : FLAG_stress_compaction = false;
379 5 : FLAG_allow_natives_syntax = true;
380 5 : CcTest::InitializeVM();
381 10 : v8::HandleScope scope(CcTest::isolate());
382 35 : for (int i = 0; i < 3; i++) {
383 15 : LocalContext env;
384 30 : env->Global()
385 75 : ->Set(env.local(), v8_str("x"), v8::Integer::New(CcTest::isolate(), i))
386 : .FromJust();
387 : CompileRun(
388 : "function MakeClosure() {"
389 : " return function() { return x; };"
390 : "}"
391 : "var closure0 = MakeClosure();"
392 : "var closure1 = MakeClosure();" // We only share optimized code
393 : // if there are at least two closures.
394 : "%DebugPrint(closure0());"
395 : "%OptimizeFunctionOnNextCall(closure0);"
396 : "%DebugPrint(closure0());"
397 : "closure1();"
398 : "var closure2 = MakeClosure(); closure2();");
399 : Handle<JSFunction> fun1 = Handle<JSFunction>::cast(
400 : v8::Utils::OpenHandle(*v8::Local<v8::Function>::Cast(
401 30 : env->Global()
402 45 : ->Get(env.local(), v8_str("closure1"))
403 : .ToLocalChecked())));
404 : Handle<JSFunction> fun2 = Handle<JSFunction>::cast(
405 : v8::Utils::OpenHandle(*v8::Local<v8::Function>::Cast(
406 30 : env->Global()
407 45 : ->Get(env.local(), v8_str("closure2"))
408 : .ToLocalChecked())));
409 18 : CHECK(fun1->IsOptimized() || !CcTest::i_isolate()->use_optimizer());
410 18 : CHECK(fun2->IsOptimized() || !CcTest::i_isolate()->use_optimizer());
411 15 : CHECK_EQ(fun1->code(), fun2->code());
412 : }
413 5 : }
414 :
415 26644 : TEST(CompileFunctionInContext) {
416 6 : if (i::FLAG_always_opt) return;
417 4 : CcTest::InitializeVM();
418 8 : v8::HandleScope scope(CcTest::isolate());
419 4 : LocalContext env;
420 : CompileRun("var r = 10;");
421 : v8::Local<v8::Object> math = v8::Local<v8::Object>::Cast(
422 16 : env->Global()->Get(env.local(), v8_str("Math")).ToLocalChecked());
423 : v8::ScriptCompiler::Source script_source(v8_str(
424 : "a = PI * r * r;"
425 : "x = r * cos(PI);"
426 4 : "y = r * sin(PI / 2);"));
427 : v8::Local<v8::Function> fun =
428 4 : v8::ScriptCompiler::CompileFunctionInContext(env.local(), &script_source,
429 : 0, nullptr, 1, &math)
430 : .ToLocalChecked();
431 4 : CHECK(!fun.IsEmpty());
432 :
433 : i::DisallowCompilation no_compile(CcTest::i_isolate());
434 12 : fun->Call(env.local(), env->Global(), 0, nullptr).ToLocalChecked();
435 16 : CHECK(env->Global()->Has(env.local(), v8_str("a")).FromJust());
436 : v8::Local<v8::Value> a =
437 16 : env->Global()->Get(env.local(), v8_str("a")).ToLocalChecked();
438 4 : CHECK(a->IsNumber());
439 16 : CHECK(env->Global()->Has(env.local(), v8_str("x")).FromJust());
440 : v8::Local<v8::Value> x =
441 16 : env->Global()->Get(env.local(), v8_str("x")).ToLocalChecked();
442 4 : CHECK(x->IsNumber());
443 16 : CHECK(env->Global()->Has(env.local(), v8_str("y")).FromJust());
444 : v8::Local<v8::Value> y =
445 16 : env->Global()->Get(env.local(), v8_str("y")).ToLocalChecked();
446 4 : CHECK(y->IsNumber());
447 8 : CHECK_EQ(314.1592653589793, a->NumberValue(env.local()).FromJust());
448 8 : CHECK_EQ(-10.0, x->NumberValue(env.local()).FromJust());
449 8 : CHECK_EQ(10.0, y->NumberValue(env.local()).FromJust());
450 : }
451 :
452 :
453 26644 : TEST(CompileFunctionInContextComplex) {
454 5 : CcTest::InitializeVM();
455 10 : v8::HandleScope scope(CcTest::isolate());
456 5 : LocalContext env;
457 : CompileRun(
458 : "var x = 1;"
459 : "var y = 2;"
460 : "var z = 4;"
461 : "var a = {x: 8, y: 16};"
462 : "var b = {x: 32};");
463 25 : v8::Local<v8::Object> ext[2];
464 : ext[0] = v8::Local<v8::Object>::Cast(
465 20 : env->Global()->Get(env.local(), v8_str("a")).ToLocalChecked());
466 : ext[1] = v8::Local<v8::Object>::Cast(
467 20 : env->Global()->Get(env.local(), v8_str("b")).ToLocalChecked());
468 5 : v8::ScriptCompiler::Source script_source(v8_str("result = x + y + z"));
469 : v8::Local<v8::Function> fun =
470 5 : v8::ScriptCompiler::CompileFunctionInContext(env.local(), &script_source,
471 : 0, nullptr, 2, ext)
472 : .ToLocalChecked();
473 5 : CHECK(!fun.IsEmpty());
474 15 : fun->Call(env.local(), env->Global(), 0, nullptr).ToLocalChecked();
475 20 : CHECK(env->Global()->Has(env.local(), v8_str("result")).FromJust());
476 : v8::Local<v8::Value> result =
477 20 : env->Global()->Get(env.local(), v8_str("result")).ToLocalChecked();
478 5 : CHECK(result->IsNumber());
479 10 : CHECK_EQ(52.0, result->NumberValue(env.local()).FromJust());
480 5 : }
481 :
482 :
483 26644 : TEST(CompileFunctionInContextArgs) {
484 5 : CcTest::InitializeVM();
485 10 : v8::HandleScope scope(CcTest::isolate());
486 5 : LocalContext env;
487 : CompileRun("var a = {x: 23};");
488 15 : v8::Local<v8::Object> ext[1];
489 : ext[0] = v8::Local<v8::Object>::Cast(
490 20 : env->Global()->Get(env.local(), v8_str("a")).ToLocalChecked());
491 5 : v8::ScriptCompiler::Source script_source(v8_str("result = x + abc"));
492 5 : v8::Local<v8::String> arg = v8_str("abc");
493 : v8::Local<v8::Function> fun =
494 5 : v8::ScriptCompiler::CompileFunctionInContext(env.local(), &script_source,
495 : 1, &arg, 1, ext)
496 : .ToLocalChecked();
497 20 : CHECK_EQ(1, fun->Get(env.local(), v8_str("length"))
498 : .ToLocalChecked()
499 : ->ToInt32(env.local())
500 : .ToLocalChecked()
501 : ->Value());
502 5 : v8::Local<v8::Value> arg_value = v8::Number::New(CcTest::isolate(), 42.0);
503 15 : fun->Call(env.local(), env->Global(), 1, &arg_value).ToLocalChecked();
504 20 : CHECK(env->Global()->Has(env.local(), v8_str("result")).FromJust());
505 : v8::Local<v8::Value> result =
506 20 : env->Global()->Get(env.local(), v8_str("result")).ToLocalChecked();
507 5 : CHECK(result->IsNumber());
508 10 : CHECK_EQ(65.0, result->NumberValue(env.local()).FromJust());
509 5 : }
510 :
511 :
512 26644 : TEST(CompileFunctionInContextComments) {
513 5 : CcTest::InitializeVM();
514 10 : v8::HandleScope scope(CcTest::isolate());
515 5 : LocalContext env;
516 : CompileRun("var a = {x: 23, y: 1, z: 2};");
517 15 : v8::Local<v8::Object> ext[1];
518 : ext[0] = v8::Local<v8::Object>::Cast(
519 20 : env->Global()->Get(env.local(), v8_str("a")).ToLocalChecked());
520 : v8::Local<v8::String> source =
521 : CompileRun("'result = /* y + */ x + a\\u4e00 // + z'").As<v8::String>();
522 : v8::ScriptCompiler::Source script_source(source);
523 5 : v8::Local<v8::String> arg = CompileRun("'a\\u4e00'").As<v8::String>();
524 : v8::Local<v8::Function> fun =
525 5 : v8::ScriptCompiler::CompileFunctionInContext(env.local(), &script_source,
526 : 1, &arg, 1, ext)
527 : .ToLocalChecked();
528 5 : CHECK(!fun.IsEmpty());
529 5 : v8::Local<v8::Value> arg_value = v8::Number::New(CcTest::isolate(), 42.0);
530 15 : fun->Call(env.local(), env->Global(), 1, &arg_value).ToLocalChecked();
531 20 : CHECK(env->Global()->Has(env.local(), v8_str("result")).FromJust());
532 : v8::Local<v8::Value> result =
533 20 : env->Global()->Get(env.local(), v8_str("result")).ToLocalChecked();
534 5 : CHECK(result->IsNumber());
535 10 : CHECK_EQ(65.0, result->NumberValue(env.local()).FromJust());
536 5 : }
537 :
538 :
539 26644 : TEST(CompileFunctionInContextNonIdentifierArgs) {
540 5 : CcTest::InitializeVM();
541 10 : v8::HandleScope scope(CcTest::isolate());
542 5 : LocalContext env;
543 5 : v8::ScriptCompiler::Source script_source(v8_str("result = 1"));
544 5 : v8::Local<v8::String> arg = v8_str("b }");
545 10 : CHECK(v8::ScriptCompiler::CompileFunctionInContext(
546 : env.local(), &script_source, 1, &arg, 0, nullptr)
547 : .IsEmpty());
548 5 : }
549 :
550 26644 : TEST(CompileFunctionInContextRenderCallSite) {
551 5 : CcTest::InitializeVM();
552 10 : v8::HandleScope scope(CcTest::isolate());
553 5 : LocalContext env;
554 : static const char* source1 =
555 : "try {"
556 : " var a = [];"
557 : " a[0]();"
558 : "} catch (e) {"
559 : " return e.toString();"
560 : "}";
561 : static const char* expect1 = "TypeError: a[0] is not a function";
562 : static const char* source2 =
563 : "try {"
564 : " (function() {"
565 : " var a = [];"
566 : " a[0]();"
567 : " })()"
568 : "} catch (e) {"
569 : " return e.toString();"
570 : "}";
571 : static const char* expect2 = "TypeError: a[0] is not a function";
572 : {
573 5 : v8::ScriptCompiler::Source script_source(v8_str(source1));
574 : v8::Local<v8::Function> fun =
575 5 : v8::ScriptCompiler::CompileFunctionInContext(
576 : env.local(), &script_source, 0, nullptr, 0, nullptr)
577 : .ToLocalChecked();
578 5 : CHECK(!fun.IsEmpty());
579 : v8::Local<v8::Value> result =
580 15 : fun->Call(env.local(), env->Global(), 0, nullptr).ToLocalChecked();
581 5 : CHECK(result->IsString());
582 15 : CHECK(v8::Local<v8::String>::Cast(result)
583 : ->Equals(env.local(), v8_str(expect1))
584 : .FromJust());
585 : }
586 : {
587 5 : v8::ScriptCompiler::Source script_source(v8_str(source2));
588 : v8::Local<v8::Function> fun =
589 5 : v8::ScriptCompiler::CompileFunctionInContext(
590 : env.local(), &script_source, 0, nullptr, 0, nullptr)
591 : .ToLocalChecked();
592 : v8::Local<v8::Value> result =
593 15 : fun->Call(env.local(), env->Global(), 0, nullptr).ToLocalChecked();
594 5 : CHECK(result->IsString());
595 15 : CHECK(v8::Local<v8::String>::Cast(result)
596 : ->Equals(env.local(), v8_str(expect2))
597 : .FromJust());
598 : }
599 5 : }
600 :
601 26644 : TEST(CompileFunctionInContextQuirks) {
602 5 : CcTest::InitializeVM();
603 10 : v8::HandleScope scope(CcTest::isolate());
604 5 : LocalContext env;
605 : {
606 : static const char* source =
607 : "[x, y] = ['ab', 'cd'];"
608 : "return x + y";
609 : static const char* expect = "abcd";
610 5 : v8::ScriptCompiler::Source script_source(v8_str(source));
611 : v8::Local<v8::Function> fun =
612 5 : v8::ScriptCompiler::CompileFunctionInContext(
613 : env.local(), &script_source, 0, nullptr, 0, nullptr)
614 : .ToLocalChecked();
615 : v8::Local<v8::Value> result =
616 15 : fun->Call(env.local(), env->Global(), 0, nullptr).ToLocalChecked();
617 5 : CHECK(result->IsString());
618 15 : CHECK(v8::Local<v8::String>::Cast(result)
619 : ->Equals(env.local(), v8_str(expect))
620 : .FromJust());
621 : }
622 : {
623 : static const char* source = "'use strict'; var a = 077";
624 5 : v8::ScriptCompiler::Source script_source(v8_str(source));
625 10 : v8::TryCatch try_catch(CcTest::isolate());
626 10 : CHECK(v8::ScriptCompiler::CompileFunctionInContext(
627 : env.local(), &script_source, 0, nullptr, 0, nullptr)
628 : .IsEmpty());
629 5 : CHECK(try_catch.HasCaught());
630 : }
631 : {
632 : static const char* source = "{ let x; { var x } }";
633 5 : v8::ScriptCompiler::Source script_source(v8_str(source));
634 10 : v8::TryCatch try_catch(CcTest::isolate());
635 10 : CHECK(v8::ScriptCompiler::CompileFunctionInContext(
636 : env.local(), &script_source, 0, nullptr, 0, nullptr)
637 : .IsEmpty());
638 5 : CHECK(try_catch.HasCaught());
639 : }
640 5 : }
641 :
642 26644 : TEST(CompileFunctionInContextScriptOrigin) {
643 5 : CcTest::InitializeVM();
644 10 : v8::HandleScope scope(CcTest::isolate());
645 5 : LocalContext env;
646 : v8::ScriptOrigin origin(v8_str("test"),
647 : v8::Integer::New(CcTest::isolate(), 22),
648 5 : v8::Integer::New(CcTest::isolate(), 41));
649 5 : v8::ScriptCompiler::Source script_source(v8_str("throw new Error()"), origin);
650 : v8::Local<v8::Function> fun =
651 5 : v8::ScriptCompiler::CompileFunctionInContext(env.local(), &script_source,
652 : 0, nullptr, 0, nullptr)
653 : .ToLocalChecked();
654 5 : CHECK(!fun.IsEmpty());
655 10 : v8::TryCatch try_catch(CcTest::isolate());
656 5 : CcTest::isolate()->SetCaptureStackTraceForUncaughtExceptions(true);
657 15 : CHECK(fun->Call(env.local(), env->Global(), 0, nullptr).IsEmpty());
658 5 : CHECK(try_catch.HasCaught());
659 10 : CHECK(!try_catch.Exception().IsEmpty());
660 : v8::Local<v8::StackTrace> stack =
661 5 : v8::Exception::GetStackTrace(try_catch.Exception());
662 5 : CHECK(!stack.IsEmpty());
663 5 : CHECK_GT(stack->GetFrameCount(), 0);
664 5 : v8::Local<v8::StackFrame> frame = stack->GetFrame(CcTest::isolate(), 0);
665 5 : CHECK_EQ(23, frame->GetLineNumber());
666 5 : CHECK_EQ(42 + strlen("throw "), static_cast<unsigned>(frame->GetColumn()));
667 5 : }
668 :
669 5 : void TestCompileFunctionInContextToStringImpl() {
670 : #define CHECK_NOT_CAUGHT(__local_context__, try_catch, __op__) \
671 : do { \
672 : const char* op = (__op__); \
673 : v8::Local<v8::Context> context = (__local_context__); \
674 : if (try_catch.HasCaught()) { \
675 : v8::String::Utf8Value error( \
676 : CcTest::isolate(), \
677 : try_catch.Exception()->ToString(context).ToLocalChecked()); \
678 : V8_Fatal(__FILE__, __LINE__, \
679 : "Unexpected exception thrown during %s:\n\t%s\n", op, *error); \
680 : } \
681 : } while (false)
682 :
683 : { // NOLINT
684 5 : CcTest::InitializeVM();
685 10 : v8::HandleScope scope(CcTest::isolate());
686 5 : LocalContext env;
687 :
688 : // Regression test for v8:6190
689 : {
690 5 : v8::ScriptOrigin origin(v8_str("test"), v8_int(22), v8_int(41));
691 5 : v8::ScriptCompiler::Source script_source(v8_str("return event"), origin);
692 :
693 5 : v8::Local<v8::String> params[] = {v8_str("event")};
694 10 : v8::TryCatch try_catch(CcTest::isolate());
695 : v8::MaybeLocal<v8::Function> maybe_fun =
696 : v8::ScriptCompiler::CompileFunctionInContext(
697 : env.local(), &script_source, arraysize(params), params, 0,
698 5 : nullptr);
699 :
700 5 : CHECK_NOT_CAUGHT(env.local(), try_catch,
701 : "v8::ScriptCompiler::CompileFunctionInContext");
702 :
703 : v8::Local<v8::Function> fun = maybe_fun.ToLocalChecked();
704 5 : CHECK(!fun.IsEmpty());
705 5 : CHECK(!try_catch.HasCaught());
706 : v8::Local<v8::String> result =
707 5 : fun->ToString(env.local()).ToLocalChecked();
708 : v8::Local<v8::String> expected = v8_str(
709 : "function (event) {\n"
710 : "return event\n"
711 5 : "}");
712 10 : CHECK(expected->Equals(env.local(), result).FromJust());
713 : }
714 :
715 : // With no parameters:
716 : {
717 5 : v8::ScriptOrigin origin(v8_str("test"), v8_int(17), v8_int(31));
718 5 : v8::ScriptCompiler::Source script_source(v8_str("return 0"), origin);
719 :
720 10 : v8::TryCatch try_catch(CcTest::isolate());
721 : v8::MaybeLocal<v8::Function> maybe_fun =
722 : v8::ScriptCompiler::CompileFunctionInContext(
723 5 : env.local(), &script_source, 0, nullptr, 0, nullptr);
724 :
725 5 : CHECK_NOT_CAUGHT(env.local(), try_catch,
726 : "v8::ScriptCompiler::CompileFunctionInContext");
727 :
728 : v8::Local<v8::Function> fun = maybe_fun.ToLocalChecked();
729 5 : CHECK(!fun.IsEmpty());
730 5 : CHECK(!try_catch.HasCaught());
731 : v8::Local<v8::String> result =
732 5 : fun->ToString(env.local()).ToLocalChecked();
733 : v8::Local<v8::String> expected = v8_str(
734 : "function () {\n"
735 : "return 0\n"
736 5 : "}");
737 10 : CHECK(expected->Equals(env.local(), result).FromJust());
738 : }
739 :
740 : // With a name:
741 : {
742 5 : v8::ScriptOrigin origin(v8_str("test"), v8_int(17), v8_int(31));
743 5 : v8::ScriptCompiler::Source script_source(v8_str("return 0"), origin);
744 :
745 10 : v8::TryCatch try_catch(CcTest::isolate());
746 : v8::MaybeLocal<v8::Function> maybe_fun =
747 : v8::ScriptCompiler::CompileFunctionInContext(
748 5 : env.local(), &script_source, 0, nullptr, 0, nullptr);
749 :
750 5 : CHECK_NOT_CAUGHT(env.local(), try_catch,
751 : "v8::ScriptCompiler::CompileFunctionInContext");
752 :
753 : v8::Local<v8::Function> fun = maybe_fun.ToLocalChecked();
754 5 : CHECK(!fun.IsEmpty());
755 5 : CHECK(!try_catch.HasCaught());
756 :
757 5 : fun->SetName(v8_str("onclick"));
758 :
759 : v8::Local<v8::String> result =
760 5 : fun->ToString(env.local()).ToLocalChecked();
761 : v8::Local<v8::String> expected = v8_str(
762 : "function onclick() {\n"
763 : "return 0\n"
764 5 : "}");
765 10 : CHECK(expected->Equals(env.local(), result).FromJust());
766 : }
767 : }
768 : #undef CHECK_NOT_CAUGHT
769 5 : }
770 :
771 26644 : TEST(CompileFunctionInContextFunctionToString) {
772 5 : TestCompileFunctionInContextToStringImpl();
773 5 : }
774 :
775 26644 : TEST(InvocationCount) {
776 : if (FLAG_lite_mode) return;
777 5 : FLAG_allow_natives_syntax = true;
778 5 : FLAG_always_opt = false;
779 5 : CcTest::InitializeVM();
780 10 : v8::HandleScope scope(CcTest::isolate());
781 :
782 : CompileRun(
783 : "function bar() {};"
784 : "function foo() { return bar(); };"
785 : "foo();");
786 5 : Handle<JSFunction> foo = Handle<JSFunction>::cast(GetGlobalProperty("foo"));
787 5 : CHECK_EQ(1, foo->feedback_vector()->invocation_count());
788 : CompileRun("foo()");
789 5 : CHECK_EQ(2, foo->feedback_vector()->invocation_count());
790 : CompileRun("bar()");
791 5 : CHECK_EQ(2, foo->feedback_vector()->invocation_count());
792 : CompileRun("foo(); foo()");
793 5 : CHECK_EQ(4, foo->feedback_vector()->invocation_count());
794 : }
795 :
796 26644 : TEST(SafeToSkipArgumentsAdaptor) {
797 5 : CcTest::InitializeVM();
798 10 : v8::HandleScope scope(CcTest::isolate());
799 : CompileRun(
800 : "function a() { \"use strict\"; }; a();"
801 : "function b() { }; b();"
802 : "function c() { \"use strict\"; return arguments; }; c();"
803 : "function d(...args) { return args; }; d();"
804 : "function e() { \"use strict\"; return eval(\"\"); }; e();"
805 : "function f(x, y) { \"use strict\"; return x + y; }; f(1, 2);");
806 5 : Handle<JSFunction> a = Handle<JSFunction>::cast(GetGlobalProperty("a"));
807 5 : CHECK(a->shared()->is_safe_to_skip_arguments_adaptor());
808 5 : Handle<JSFunction> b = Handle<JSFunction>::cast(GetGlobalProperty("b"));
809 5 : CHECK(!b->shared()->is_safe_to_skip_arguments_adaptor());
810 5 : Handle<JSFunction> c = Handle<JSFunction>::cast(GetGlobalProperty("c"));
811 5 : CHECK(!c->shared()->is_safe_to_skip_arguments_adaptor());
812 5 : Handle<JSFunction> d = Handle<JSFunction>::cast(GetGlobalProperty("d"));
813 5 : CHECK(!d->shared()->is_safe_to_skip_arguments_adaptor());
814 5 : Handle<JSFunction> e = Handle<JSFunction>::cast(GetGlobalProperty("e"));
815 5 : CHECK(!e->shared()->is_safe_to_skip_arguments_adaptor());
816 5 : Handle<JSFunction> f = Handle<JSFunction>::cast(GetGlobalProperty("f"));
817 5 : CHECK(f->shared()->is_safe_to_skip_arguments_adaptor());
818 5 : }
819 :
820 26644 : TEST(ShallowEagerCompilation) {
821 5 : i::FLAG_always_opt = false;
822 5 : CcTest::InitializeVM();
823 5 : LocalContext env;
824 : i::Isolate* isolate = CcTest::i_isolate();
825 10 : v8::HandleScope scope(CcTest::isolate());
826 : v8::Local<v8::String> source = v8_str(
827 : "function f(x) {"
828 : " return x + x;"
829 : "}"
830 5 : "f(2)");
831 : v8::ScriptCompiler::Source script_source(source);
832 : v8::Local<v8::Script> script =
833 5 : v8::ScriptCompiler::Compile(env.local(), &script_source,
834 : v8::ScriptCompiler::kEagerCompile)
835 : .ToLocalChecked();
836 : {
837 : v8::internal::DisallowCompilation no_compile_expected(isolate);
838 5 : v8::Local<v8::Value> result = script->Run(env.local()).ToLocalChecked();
839 10 : CHECK_EQ(4, result->Int32Value(env.local()).FromJust());
840 : }
841 5 : }
842 :
843 26644 : TEST(DeepEagerCompilation) {
844 5 : i::FLAG_always_opt = false;
845 5 : CcTest::InitializeVM();
846 5 : LocalContext env;
847 : i::Isolate* isolate = CcTest::i_isolate();
848 10 : v8::HandleScope scope(CcTest::isolate());
849 : v8::Local<v8::String> source = v8_str(
850 : "function f(x) {"
851 : " function g(x) {"
852 : " function h(x) {"
853 : " return x ** x;"
854 : " }"
855 : " return h(x) * h(x);"
856 : " }"
857 : " return g(x) + g(x);"
858 : "}"
859 5 : "f(2)");
860 : v8::ScriptCompiler::Source script_source(source);
861 : v8::Local<v8::Script> script =
862 5 : v8::ScriptCompiler::Compile(env.local(), &script_source,
863 : v8::ScriptCompiler::kEagerCompile)
864 : .ToLocalChecked();
865 : {
866 : v8::internal::DisallowCompilation no_compile_expected(isolate);
867 5 : v8::Local<v8::Value> result = script->Run(env.local()).ToLocalChecked();
868 10 : CHECK_EQ(32, result->Int32Value(env.local()).FromJust());
869 : }
870 5 : }
871 :
872 26644 : TEST(DeepEagerCompilationPeakMemory) {
873 5 : i::FLAG_always_opt = false;
874 5 : CcTest::InitializeVM();
875 5 : LocalContext env;
876 10 : v8::HandleScope scope(CcTest::isolate());
877 : v8::Local<v8::String> source = v8_str(
878 : "function f() {"
879 : " function g1() {"
880 : " function h1() {"
881 : " function i1() {}"
882 : " function i2() {}"
883 : " }"
884 : " function h2() {"
885 : " function i1() {}"
886 : " function i2() {}"
887 : " }"
888 : " }"
889 : " function g2() {"
890 : " function h1() {"
891 : " function i1() {}"
892 : " function i2() {}"
893 : " }"
894 : " function h2() {"
895 : " function i1() {}"
896 : " function i2() {}"
897 : " }"
898 : " }"
899 5 : "}");
900 : v8::ScriptCompiler::Source script_source(source);
901 5 : CcTest::i_isolate()->compilation_cache()->Disable();
902 :
903 5 : v8::HeapStatistics heap_statistics;
904 5 : CcTest::isolate()->GetHeapStatistics(&heap_statistics);
905 : size_t peak_mem_1 = heap_statistics.peak_malloced_memory();
906 : printf("peak memory after init: %8zu\n", peak_mem_1);
907 :
908 5 : v8::ScriptCompiler::Compile(env.local(), &script_source,
909 : v8::ScriptCompiler::kNoCompileOptions)
910 : .ToLocalChecked();
911 :
912 5 : CcTest::isolate()->GetHeapStatistics(&heap_statistics);
913 : size_t peak_mem_2 = heap_statistics.peak_malloced_memory();
914 : printf("peak memory after lazy compile: %8zu\n", peak_mem_2);
915 :
916 5 : v8::ScriptCompiler::Compile(env.local(), &script_source,
917 : v8::ScriptCompiler::kNoCompileOptions)
918 : .ToLocalChecked();
919 :
920 5 : CcTest::isolate()->GetHeapStatistics(&heap_statistics);
921 : size_t peak_mem_3 = heap_statistics.peak_malloced_memory();
922 : printf("peak memory after lazy compile: %8zu\n", peak_mem_3);
923 :
924 5 : v8::ScriptCompiler::Compile(env.local(), &script_source,
925 : v8::ScriptCompiler::kEagerCompile)
926 : .ToLocalChecked();
927 :
928 5 : CcTest::isolate()->GetHeapStatistics(&heap_statistics);
929 : size_t peak_mem_4 = heap_statistics.peak_malloced_memory();
930 : printf("peak memory after eager compile: %8zu\n", peak_mem_4);
931 :
932 5 : CHECK_LE(peak_mem_1, peak_mem_2);
933 5 : CHECK_EQ(peak_mem_2, peak_mem_3);
934 5 : CHECK_LE(peak_mem_3, peak_mem_4);
935 : // Check that eager compilation does not cause significantly higher (+100%)
936 : // peak memory than lazy compilation.
937 5 : CHECK_LE(peak_mem_4 - peak_mem_3, peak_mem_3);
938 5 : }
939 :
940 : // TODO(mslekova): Remove the duplication with test-heap.cc
941 2 : static int AllocationSitesCount(Heap* heap) {
942 : int count = 0;
943 4 : for (Object site = heap->allocation_sites_list(); site->IsAllocationSite();) {
944 1 : AllocationSite cur = AllocationSite::cast(site);
945 1 : CHECK(cur->HasWeakNext());
946 : site = cur->weak_next();
947 1 : count++;
948 : }
949 2 : return count;
950 : }
951 :
952 : // This test simulates a specific race-condition if GC is triggered just
953 : // before CompilationDependencies::Commit is finished, and this changes
954 : // the pretenuring decision, thus causing a deoptimization.
955 26643 : TEST(DecideToPretenureDuringCompilation) {
956 : // The test makes use of optimization and relies on deterministic
957 : // compilation.
958 4 : if (!i::FLAG_opt || i::FLAG_always_opt ||
959 1 : i::FLAG_stress_incremental_marking || i::FLAG_optimize_for_size
960 : #ifdef ENABLE_MINOR_MC
961 1 : || i::FLAG_minor_mc
962 : #endif
963 : )
964 3 : return;
965 :
966 1 : FLAG_stress_gc_during_compilation = true;
967 1 : FLAG_allow_natives_syntax = true;
968 1 : FLAG_allocation_site_pretenuring = true;
969 1 : FLAG_flush_bytecode = false;
970 :
971 : // We want to trigger exactly 1 optimization.
972 1 : FLAG_use_osr = false;
973 :
974 : // We'll do manual initialization.
975 : ManualGCScope manual_gc_scope;
976 : v8::Isolate::CreateParams create_params;
977 :
978 : // This setting ensures Heap::MaximumSizeScavenge will return `true`.
979 : // We need to initialize the heap with at least 1 page, while keeping the
980 : // limit low, to ensure the new space fills even on 32-bit architectures.
981 : create_params.constraints.set_max_semi_space_size_in_kb(Page::kPageSize /
982 : 1024);
983 1 : create_params.array_buffer_allocator = CcTest::array_buffer_allocator();
984 1 : v8::Isolate* isolate = v8::Isolate::New(create_params);
985 :
986 1 : isolate->Enter();
987 : {
988 : i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
989 : Heap* heap = i_isolate->heap();
990 : GlobalHandles* global_handles = i_isolate->global_handles();
991 : HandleScope handle_scope(i_isolate);
992 :
993 : // The allocation site at the head of the list is ours.
994 : Handle<AllocationSite> site;
995 : {
996 1 : LocalContext context(isolate);
997 2 : v8::HandleScope scope(context->GetIsolate());
998 :
999 1 : int count = AllocationSitesCount(heap);
1000 : CompileRun(
1001 : "let arr = [];"
1002 : "function foo(shouldKeep) {"
1003 : " let local_array = new Array();"
1004 : " if (shouldKeep) arr.push(local_array);"
1005 : "}"
1006 : "function bar(shouldKeep) {"
1007 : " for (let i = 0; i < 10000; i++) {"
1008 : " foo(shouldKeep);"
1009 : " }"
1010 : "}"
1011 : "bar();");
1012 :
1013 : // This number should be >= kPretenureRatio * 10000,
1014 : // where 10000 is the number of iterations in `bar`,
1015 : // in order to make the ratio in DigestPretenuringFeedback close to 1.
1016 : const int memento_found_bump = 8500;
1017 :
1018 : // One allocation site should have been created.
1019 1 : int new_count = AllocationSitesCount(heap);
1020 1 : CHECK_EQ(new_count, (count + 1));
1021 : site = Handle<AllocationSite>::cast(global_handles->Create(
1022 : AllocationSite::cast(heap->allocation_sites_list())));
1023 : site->set_memento_found_count(memento_found_bump);
1024 :
1025 : CompileRun("%OptimizeFunctionOnNextCall(bar);");
1026 : CompileRun("bar(true);");
1027 :
1028 : // The last call should have caused `foo` to bail out of compilation
1029 : // due to dependency change (the pretenuring decision in this case).
1030 : // This will cause recompilation.
1031 :
1032 : // Check `bar` can get optimized again, meaning the compiler state is
1033 : // recoverable from this point.
1034 : CompileRun("%OptimizeFunctionOnNextCall(bar);");
1035 : CompileRun("bar();");
1036 :
1037 : Handle<Object> foo_obj =
1038 3 : JSReceiver::GetProperty(i_isolate, i_isolate->global_object(), "bar")
1039 : .ToHandleChecked();
1040 : Handle<JSFunction> bar = Handle<JSFunction>::cast(foo_obj);
1041 :
1042 1 : CHECK(bar->IsOptimized());
1043 : }
1044 : }
1045 1 : isolate->Exit();
1046 1 : isolate->Dispose();
1047 : }
1048 :
1049 : } // namespace internal
1050 79917 : } // namespace v8
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