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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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289 | 289 |
290 | 290 |
291 Failure* IC::ReferenceError(const char* type, Handle<String> name) { | 291 Failure* IC::ReferenceError(const char* type, Handle<String> name) { |
292 HandleScope scope(isolate()); | 292 HandleScope scope(isolate()); |
293 Handle<Object> error = isolate()->factory()->NewReferenceError( | 293 Handle<Object> error = isolate()->factory()->NewReferenceError( |
294 type, HandleVector(&name, 1)); | 294 type, HandleVector(&name, 1)); |
295 return isolate()->Throw(*error); | 295 return isolate()->Throw(*error); |
296 } | 296 } |
297 | 297 |
298 | 298 |
299 void IC::PostPatching() { | 299 void IC::PostPatching(Address address, Code* target, Code* old_target) { |
| 300 if (FLAG_type_info_threshold > 0) { |
| 301 if (old_target->is_inline_cache_stub() && |
| 302 target->is_inline_cache_stub()) { |
| 303 State old_state = old_target->ic_state(); |
| 304 State new_state = target->ic_state(); |
| 305 bool was_uninitialized = |
| 306 old_state == UNINITIALIZED || old_state == PREMONOMORPHIC; |
| 307 bool is_uninitialized = |
| 308 new_state == UNINITIALIZED || new_state == PREMONOMORPHIC; |
| 309 int delta = 0; |
| 310 if (was_uninitialized && !is_uninitialized) { |
| 311 delta = 1; |
| 312 } else if (!was_uninitialized && is_uninitialized) { |
| 313 delta = -1; |
| 314 } |
| 315 if (delta != 0) { |
| 316 Code* host = target->GetHeap()->isolate()-> |
| 317 inner_pointer_to_code_cache()->GetCacheEntry(address)->code; |
| 318 TypeFeedbackInfo* info = |
| 319 TypeFeedbackInfo::cast(host->type_feedback_info()); |
| 320 info->set_ic_with_typeinfo_count( |
| 321 info->ic_with_typeinfo_count() + delta); |
| 322 } |
| 323 } |
| 324 } |
300 if (FLAG_watch_ic_patching) { | 325 if (FLAG_watch_ic_patching) { |
301 Isolate::Current()->runtime_profiler()->NotifyICChanged(); | 326 Isolate::Current()->runtime_profiler()->NotifyICChanged(); |
302 // We do not want to optimize until the ICs have settled down, | 327 // We do not want to optimize until the ICs have settled down, |
303 // so when they are patched, we postpone optimization for the | 328 // so when they are patched, we postpone optimization for the |
304 // current function and the functions above it on the stack that | 329 // current function and the functions above it on the stack that |
305 // might want to inline this one. | 330 // might want to inline this one. |
306 StackFrameIterator it; | 331 StackFrameIterator it; |
307 if (it.done()) return; | 332 if (it.done()) return; |
308 it.Advance(); | 333 it.Advance(); |
309 static const int kStackFramesToMark = Compiler::kMaxInliningLevels - 1; | 334 static const int kStackFramesToMark = Compiler::kMaxInliningLevels - 1; |
310 for (int i = 0; i < kStackFramesToMark; ++i) { | 335 for (int i = 0; i < kStackFramesToMark; ++i) { |
311 if (it.done()) return; | 336 if (it.done()) return; |
312 StackFrame* raw_frame = it.frame(); | 337 StackFrame* raw_frame = it.frame(); |
313 if (raw_frame->is_java_script()) { | 338 if (raw_frame->is_java_script()) { |
314 JSFunction* function = | 339 JSFunction* function = |
315 JSFunction::cast(JavaScriptFrame::cast(raw_frame)->function()); | 340 JSFunction::cast(JavaScriptFrame::cast(raw_frame)->function()); |
316 function->shared()->set_profiler_ticks(0); | 341 if (function->IsOptimized()) continue; |
| 342 SharedFunctionInfo* shared = function->shared(); |
| 343 shared->set_profiler_ticks(0); |
317 } | 344 } |
318 it.Advance(); | 345 it.Advance(); |
319 } | 346 } |
320 } | 347 } |
321 } | 348 } |
322 | 349 |
323 | 350 |
324 void IC::Clear(Address address) { | 351 void IC::Clear(Address address) { |
325 Code* target = GetTargetAtAddress(address); | 352 Code* target = GetTargetAtAddress(address); |
326 | 353 |
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2526 #undef ADDR | 2553 #undef ADDR |
2527 }; | 2554 }; |
2528 | 2555 |
2529 | 2556 |
2530 Address IC::AddressFromUtilityId(IC::UtilityId id) { | 2557 Address IC::AddressFromUtilityId(IC::UtilityId id) { |
2531 return IC_utilities[id]; | 2558 return IC_utilities[id]; |
2532 } | 2559 } |
2533 | 2560 |
2534 | 2561 |
2535 } } // namespace v8::internal | 2562 } } // namespace v8::internal |
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