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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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305 ~CompilationHandleScope() { | 305 ~CompilationHandleScope() { |
306 info_->set_deferred_handles(deferred_.Detach()); | 306 info_->set_deferred_handles(deferred_.Detach()); |
307 } | 307 } |
308 | 308 |
309 private: | 309 private: |
310 DeferredHandleScope deferred_; | 310 DeferredHandleScope deferred_; |
311 CompilationInfo* info_; | 311 CompilationInfo* info_; |
312 }; | 312 }; |
313 | 313 |
314 | 314 |
| 315 class HGraph; |
| 316 class HGraphBuilder; |
| 317 class LChunk; |
| 318 |
| 319 // A helper class that calls the three compilation phases in |
| 320 // Crankshaft and keeps track of its state. The three phases |
| 321 // CreateGraph, OptimizeGraph and GenerateAndInstallCode can either |
| 322 // fail, bail-out to the full code generator or succeed. Apart from |
| 323 // their return value, the status of the phase last run can be checked |
| 324 // using last_status(). |
| 325 class OptimizingCompiler: public ZoneObject { |
| 326 public: |
| 327 explicit OptimizingCompiler(CompilationInfo* info) |
| 328 : info_(info), |
| 329 oracle_(NULL), |
| 330 graph_builder_(NULL), |
| 331 graph_(NULL), |
| 332 chunk_(NULL), |
| 333 time_taken_to_create_graph_(0), |
| 334 time_taken_to_optimize_(0), |
| 335 time_taken_to_codegen_(0), |
| 336 last_status_(FAILED) { } |
| 337 |
| 338 enum Status { |
| 339 FAILED, BAILED_OUT, SUCCEEDED |
| 340 }; |
| 341 |
| 342 MUST_USE_RESULT Status CreateGraph(); |
| 343 MUST_USE_RESULT Status OptimizeGraph(); |
| 344 MUST_USE_RESULT Status GenerateAndInstallCode(); |
| 345 |
| 346 Status last_status() const { return last_status_; } |
| 347 CompilationInfo* info() const { return info_; } |
| 348 |
| 349 private: |
| 350 CompilationInfo* info_; |
| 351 TypeFeedbackOracle* oracle_; |
| 352 HGraphBuilder* graph_builder_; |
| 353 HGraph* graph_; |
| 354 LChunk* chunk_; |
| 355 int64_t time_taken_to_create_graph_; |
| 356 int64_t time_taken_to_optimize_; |
| 357 int64_t time_taken_to_codegen_; |
| 358 Status last_status_; |
| 359 |
| 360 MUST_USE_RESULT Status SetLastStatus(Status status) { |
| 361 last_status_ = status; |
| 362 return last_status_; |
| 363 } |
| 364 void RecordOptimizationStats(); |
| 365 MUST_USE_RESULT Status AbortOptimization() { |
| 366 info_->AbortOptimization(); |
| 367 info_->shared_info()->DisableOptimization(); |
| 368 return SetLastStatus(BAILED_OUT); |
| 369 } |
| 370 |
| 371 struct Timer { |
| 372 Timer(OptimizingCompiler* compiler, int64_t* location) |
| 373 : compiler_(compiler), |
| 374 start_(OS::Ticks()), |
| 375 location_(location) { } |
| 376 |
| 377 ~Timer() { |
| 378 *location_ += (OS::Ticks() - start_); |
| 379 } |
| 380 |
| 381 OptimizingCompiler* compiler_; |
| 382 int64_t start_; |
| 383 int64_t* location_; |
| 384 }; |
| 385 }; |
| 386 |
| 387 |
315 // The V8 compiler | 388 // The V8 compiler |
316 // | 389 // |
317 // General strategy: Source code is translated into an anonymous function w/o | 390 // General strategy: Source code is translated into an anonymous function w/o |
318 // parameters which then can be executed. If the source code contains other | 391 // parameters which then can be executed. If the source code contains other |
319 // functions, they will be compiled and allocated as part of the compilation | 392 // functions, they will be compiled and allocated as part of the compilation |
320 // of the source code. | 393 // of the source code. |
321 | 394 |
322 // Please note this interface returns shared function infos. This means you | 395 // Please note this interface returns shared function infos. This means you |
323 // need to call Factory::NewFunctionFromSharedFunctionInfo before you have a | 396 // need to call Factory::NewFunctionFromSharedFunctionInfo before you have a |
324 // real function with a context. | 397 // real function with a context. |
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376 | 449 |
377 static void RecordFunctionCompilation(Logger::LogEventsAndTags tag, | 450 static void RecordFunctionCompilation(Logger::LogEventsAndTags tag, |
378 CompilationInfo* info, | 451 CompilationInfo* info, |
379 Handle<SharedFunctionInfo> shared); | 452 Handle<SharedFunctionInfo> shared); |
380 }; | 453 }; |
381 | 454 |
382 | 455 |
383 } } // namespace v8::internal | 456 } } // namespace v8::internal |
384 | 457 |
385 #endif // V8_COMPILER_H_ | 458 #endif // V8_COMPILER_H_ |
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