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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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307 // verify that our feedback vector preserves information. | 307 // verify that our feedback vector preserves information. |
308 CHECK(!f->shared()->has_deoptimization_support()); | 308 CHECK(!f->shared()->has_deoptimization_support()); |
309 Handle<TypeFeedbackVector> feedback_vector(f->shared()->feedback_vector()); | 309 Handle<TypeFeedbackVector> feedback_vector(f->shared()->feedback_vector()); |
310 | 310 |
311 // Verify that we gathered feedback. | 311 // Verify that we gathered feedback. |
312 int expected_slots = 0; | 312 int expected_slots = 0; |
313 int expected_ic_slots = 1; | 313 int expected_ic_slots = 1; |
314 CHECK_EQ(expected_slots, feedback_vector->Slots()); | 314 CHECK_EQ(expected_slots, feedback_vector->Slots()); |
315 CHECK_EQ(expected_ic_slots, feedback_vector->ICSlots()); | 315 CHECK_EQ(expected_ic_slots, feedback_vector->ICSlots()); |
316 FeedbackVectorICSlot slot_for_a(0); | 316 FeedbackVectorICSlot slot_for_a(0); |
317 CHECK(feedback_vector->Get(slot_for_a)->IsJSFunction()); | 317 Object* object = feedback_vector->Get(slot_for_a); |
| 318 CHECK(object->IsWeakCell() && |
| 319 WeakCell::cast(object)->value()->IsJSFunction()); |
318 | 320 |
319 CompileRun("%OptimizeFunctionOnNextCall(f); f(fun1);"); | 321 CompileRun("%OptimizeFunctionOnNextCall(f); f(fun1);"); |
320 | 322 |
321 // Verify that the feedback is still "gathered" despite a recompilation | 323 // Verify that the feedback is still "gathered" despite a recompilation |
322 // of the full code. | 324 // of the full code. |
323 CHECK(f->IsOptimized()); | 325 CHECK(f->IsOptimized()); |
324 CHECK(f->shared()->has_deoptimization_support()); | 326 CHECK(f->shared()->has_deoptimization_support()); |
325 CHECK(f->shared()->feedback_vector()->Get(slot_for_a)->IsJSFunction()); | 327 object = f->shared()->feedback_vector()->Get(slot_for_a); |
| 328 CHECK(object->IsWeakCell() && |
| 329 WeakCell::cast(object)->value()->IsJSFunction()); |
326 } | 330 } |
327 | 331 |
328 | 332 |
329 TEST(FeedbackVectorUnaffectedByScopeChanges) { | 333 TEST(FeedbackVectorUnaffectedByScopeChanges) { |
330 if (i::FLAG_always_opt || !i::FLAG_lazy) return; | 334 if (i::FLAG_always_opt || !i::FLAG_lazy) return; |
331 CcTest::InitializeVM(); | 335 CcTest::InitializeVM(); |
332 v8::HandleScope scope(CcTest::isolate()); | 336 v8::HandleScope scope(CcTest::isolate()); |
333 | 337 |
334 CompileRun("function builder() {" | 338 CompileRun("function builder() {" |
335 " call_target = function() { return 3; };" | 339 " call_target = function() { return 3; };" |
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445 CompileRun("function f() { a = 12345678 }; f();"); | 449 CompileRun("function f() { a = 12345678 }; f();"); |
446 CheckCodeForUnsafeLiteral(GetJSFunction(context->Global(), "f")); | 450 CheckCodeForUnsafeLiteral(GetJSFunction(context->Global(), "f")); |
447 CompileRun("function f(x) { a = 12345678 + x}; f(1);"); | 451 CompileRun("function f(x) { a = 12345678 + x}; f(1);"); |
448 CheckCodeForUnsafeLiteral(GetJSFunction(context->Global(), "f")); | 452 CheckCodeForUnsafeLiteral(GetJSFunction(context->Global(), "f")); |
449 CompileRun("function f(x) { var arguments = 1; x += 12345678}; f(1);"); | 453 CompileRun("function f(x) { var arguments = 1; x += 12345678}; f(1);"); |
450 CheckCodeForUnsafeLiteral(GetJSFunction(context->Global(), "f")); | 454 CheckCodeForUnsafeLiteral(GetJSFunction(context->Global(), "f")); |
451 CompileRun("function f(x) { var arguments = 1; x = 12345678}; f(1);"); | 455 CompileRun("function f(x) { var arguments = 1; x = 12345678}; f(1);"); |
452 CheckCodeForUnsafeLiteral(GetJSFunction(context->Global(), "f")); | 456 CheckCodeForUnsafeLiteral(GetJSFunction(context->Global(), "f")); |
453 } | 457 } |
454 #endif | 458 #endif |
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