compiler_driver.h revision 6f3dbbadf4ce66982eb3d400e0a74cb73eb034f3
1/* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#ifndef ART_COMPILER_DRIVER_COMPILER_DRIVER_H_ 18#define ART_COMPILER_DRIVER_COMPILER_DRIVER_H_ 19 20#include <set> 21#include <string> 22#include <vector> 23 24#include "base/mutex.h" 25#include "base/timing_logger.h" 26#include "class_reference.h" 27#include "compiled_method.h" 28#include "compiler.h" 29#include "dex_file.h" 30#include "driver/compiler_options.h" 31#include "instruction_set.h" 32#include "invoke_type.h" 33#include "method_reference.h" 34#include "mirror/class.h" // For mirror::Class::Status. 35#include "os.h" 36#include "profiler.h" 37#include "runtime.h" 38#include "safe_map.h" 39#include "thread_pool.h" 40#include "utils/arena_allocator.h" 41#include "utils/dedupe_set.h" 42 43namespace art { 44 45namespace verifier { 46class MethodVerifier; 47} // namespace verifier 48 49class CompiledClass; 50class CompilerOptions; 51class DexCompilationUnit; 52class DexFileToMethodInlinerMap; 53struct InlineIGetIPutData; 54class OatWriter; 55class ParallelCompilationManager; 56class ScopedObjectAccess; 57template<class T> class Handle; 58class TimingLogger; 59class VerificationResults; 60class VerifiedMethod; 61 62enum EntryPointCallingConvention { 63 // ABI of invocations to a method's interpreter entry point. 64 kInterpreterAbi, 65 // ABI of calls to a method's native code, only used for native methods. 66 kJniAbi, 67 // ABI of calls to a method's portable code entry point. 68 kPortableAbi, 69 // ABI of calls to a method's quick code entry point. 70 kQuickAbi 71}; 72 73enum DexToDexCompilationLevel { 74 kDontDexToDexCompile, // Only meaning wrt image time interpretation. 75 kRequired, // Dex-to-dex compilation required for correctness. 76 kOptimize // Perform required transformation and peep-hole optimizations. 77}; 78 79class CompilerDriver { 80 public: 81 // Create a compiler targeting the requested "instruction_set". 82 // "image" should be true if image specific optimizations should be 83 // enabled. "image_classes" lets the compiler know what classes it 84 // can assume will be in the image, with nullptr implying all available 85 // classes. 86 explicit CompilerDriver(const CompilerOptions* compiler_options, 87 VerificationResults* verification_results, 88 DexFileToMethodInlinerMap* method_inliner_map, 89 Compiler::Kind compiler_kind, 90 InstructionSet instruction_set, 91 const InstructionSetFeatures* instruction_set_features, 92 bool image, std::set<std::string>* image_classes, 93 size_t thread_count, bool dump_stats, bool dump_passes, 94 CumulativeLogger* timer, std::string profile_file = ""); 95 96 ~CompilerDriver(); 97 98 void CompileAll(jobject class_loader, const std::vector<const DexFile*>& dex_files, 99 TimingLogger* timings) 100 LOCKS_EXCLUDED(Locks::mutator_lock_); 101 102 // Compile a single Method. 103 void CompileOne(mirror::ArtMethod* method, TimingLogger* timings) 104 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 105 106 VerificationResults* GetVerificationResults() const { 107 return verification_results_; 108 } 109 110 DexFileToMethodInlinerMap* GetMethodInlinerMap() const { 111 return method_inliner_map_; 112 } 113 114 InstructionSet GetInstructionSet() const { 115 return instruction_set_; 116 } 117 118 const InstructionSetFeatures* GetInstructionSetFeatures() const { 119 return instruction_set_features_; 120 } 121 122 const CompilerOptions& GetCompilerOptions() const { 123 return *compiler_options_; 124 } 125 126 Compiler* GetCompiler() const { 127 return compiler_.get(); 128 } 129 130 bool ProfilePresent() const { 131 return profile_present_; 132 } 133 134 // Are we compiling and creating an image file? 135 bool IsImage() const { 136 return image_; 137 } 138 139 const std::set<std::string>* GetImageClasses() const { 140 return image_classes_.get(); 141 } 142 143 CompilerTls* GetTls(); 144 145 // Generate the trampolines that are invoked by unresolved direct methods. 146 const std::vector<uint8_t>* CreateInterpreterToInterpreterBridge() const 147 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 148 const std::vector<uint8_t>* CreateInterpreterToCompiledCodeBridge() const 149 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 150 const std::vector<uint8_t>* CreateJniDlsymLookup() const 151 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 152 const std::vector<uint8_t>* CreatePortableImtConflictTrampoline() const 153 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 154 const std::vector<uint8_t>* CreatePortableResolutionTrampoline() const 155 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 156 const std::vector<uint8_t>* CreatePortableToInterpreterBridge() const 157 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 158 const std::vector<uint8_t>* CreateQuickGenericJniTrampoline() const 159 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 160 const std::vector<uint8_t>* CreateQuickImtConflictTrampoline() const 161 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 162 const std::vector<uint8_t>* CreateQuickResolutionTrampoline() const 163 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 164 const std::vector<uint8_t>* CreateQuickToInterpreterBridge() const 165 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 166 167 CompiledClass* GetCompiledClass(ClassReference ref) const 168 LOCKS_EXCLUDED(compiled_classes_lock_); 169 170 CompiledMethod* GetCompiledMethod(MethodReference ref) const 171 LOCKS_EXCLUDED(compiled_methods_lock_); 172 size_t GetNonRelativeLinkerPatchCount() const 173 LOCKS_EXCLUDED(compiled_methods_lock_); 174 175 void AddRequiresConstructorBarrier(Thread* self, const DexFile* dex_file, 176 uint16_t class_def_index); 177 bool RequiresConstructorBarrier(Thread* self, const DexFile* dex_file, uint16_t class_def_index); 178 179 // Callbacks from compiler to see what runtime checks must be generated. 180 181 bool CanAssumeTypeIsPresentInDexCache(const DexFile& dex_file, uint32_t type_idx); 182 183 bool CanAssumeStringIsPresentInDexCache(const DexFile& dex_file, uint32_t string_idx) 184 LOCKS_EXCLUDED(Locks::mutator_lock_); 185 186 // Are runtime access checks necessary in the compiled code? 187 bool CanAccessTypeWithoutChecks(uint32_t referrer_idx, const DexFile& dex_file, 188 uint32_t type_idx, bool* type_known_final = nullptr, 189 bool* type_known_abstract = nullptr, 190 bool* equals_referrers_class = nullptr) 191 LOCKS_EXCLUDED(Locks::mutator_lock_); 192 193 // Are runtime access and instantiable checks necessary in the code? 194 bool CanAccessInstantiableTypeWithoutChecks(uint32_t referrer_idx, const DexFile& dex_file, 195 uint32_t type_idx) 196 LOCKS_EXCLUDED(Locks::mutator_lock_); 197 198 bool CanEmbedTypeInCode(const DexFile& dex_file, uint32_t type_idx, 199 bool* is_type_initialized, bool* use_direct_type_ptr, 200 uintptr_t* direct_type_ptr, bool* out_is_finalizable); 201 202 // Query methods for the java.lang.ref.Reference class. 203 bool CanEmbedReferenceTypeInCode(ClassReference* ref, 204 bool* use_direct_type_ptr, uintptr_t* direct_type_ptr); 205 uint32_t GetReferenceSlowFlagOffset() const; 206 uint32_t GetReferenceDisableFlagOffset() const; 207 208 // Get the DexCache for the 209 mirror::DexCache* GetDexCache(const DexCompilationUnit* mUnit) 210 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 211 212 mirror::ClassLoader* GetClassLoader(ScopedObjectAccess& soa, const DexCompilationUnit* mUnit) 213 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 214 215 // Resolve compiling method's class. Returns nullptr on failure. 216 mirror::Class* ResolveCompilingMethodsClass( 217 const ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache, 218 Handle<mirror::ClassLoader> class_loader, const DexCompilationUnit* mUnit) 219 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 220 221 // Resolve a field. Returns nullptr on failure, including incompatible class change. 222 // NOTE: Unlike ClassLinker's ResolveField(), this method enforces is_static. 223 mirror::ArtField* ResolveField( 224 const ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache, 225 Handle<mirror::ClassLoader> class_loader, const DexCompilationUnit* mUnit, 226 uint32_t field_idx, bool is_static) 227 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 228 229 // Get declaration location of a resolved field. 230 void GetResolvedFieldDexFileLocation( 231 mirror::ArtField* resolved_field, const DexFile** declaring_dex_file, 232 uint16_t* declaring_class_idx, uint16_t* declaring_field_idx) 233 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 234 235 bool IsFieldVolatile(mirror::ArtField* field) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 236 237 // Can we fast-path an IGET/IPUT access to an instance field? If yes, compute the field offset. 238 std::pair<bool, bool> IsFastInstanceField( 239 mirror::DexCache* dex_cache, mirror::Class* referrer_class, 240 mirror::ArtField* resolved_field, uint16_t field_idx) 241 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 242 243 // Can we fast-path an SGET/SPUT access to a static field? If yes, compute the field offset, 244 // the type index of the declaring class in the referrer's dex file and whether the declaring 245 // class is the referrer's class or at least can be assumed to be initialized. 246 std::pair<bool, bool> IsFastStaticField( 247 mirror::DexCache* dex_cache, mirror::Class* referrer_class, 248 mirror::ArtField* resolved_field, uint16_t field_idx, MemberOffset* field_offset, 249 uint32_t* storage_index, bool* is_referrers_class, bool* is_initialized) 250 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 251 252 // Resolve a method. Returns nullptr on failure, including incompatible class change. 253 mirror::ArtMethod* ResolveMethod( 254 ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache, 255 Handle<mirror::ClassLoader> class_loader, const DexCompilationUnit* mUnit, 256 uint32_t method_idx, InvokeType invoke_type) 257 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 258 259 // Get declaration location of a resolved field. 260 void GetResolvedMethodDexFileLocation( 261 mirror::ArtMethod* resolved_method, const DexFile** declaring_dex_file, 262 uint16_t* declaring_class_idx, uint16_t* declaring_method_idx) 263 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 264 265 // Get the index in the vtable of the method. 266 uint16_t GetResolvedMethodVTableIndex( 267 mirror::ArtMethod* resolved_method, InvokeType type) 268 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 269 270 // Can we fast-path an INVOKE? If no, returns 0. If yes, returns a non-zero opaque flags value 271 // for ProcessedInvoke() and computes the necessary lowering info. 272 int IsFastInvoke( 273 ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache, 274 Handle<mirror::ClassLoader> class_loader, const DexCompilationUnit* mUnit, 275 mirror::Class* referrer_class, mirror::ArtMethod* resolved_method, InvokeType* invoke_type, 276 MethodReference* target_method, const MethodReference* devirt_target, 277 uintptr_t* direct_code, uintptr_t* direct_method) 278 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 279 280 // Does invokation of the resolved method need class initialization? 281 bool NeedsClassInitialization(mirror::Class* referrer_class, mirror::ArtMethod* resolved_method) 282 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 283 284 void ProcessedInstanceField(bool resolved); 285 void ProcessedStaticField(bool resolved, bool local); 286 void ProcessedInvoke(InvokeType invoke_type, int flags); 287 288 // Can we fast path instance field access? Computes field's offset and volatility. 289 bool ComputeInstanceFieldInfo(uint32_t field_idx, const DexCompilationUnit* mUnit, bool is_put, 290 MemberOffset* field_offset, bool* is_volatile) 291 LOCKS_EXCLUDED(Locks::mutator_lock_); 292 293 mirror::ArtField* ComputeInstanceFieldInfo(uint32_t field_idx, 294 const DexCompilationUnit* mUnit, 295 bool is_put, 296 const ScopedObjectAccess& soa) 297 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 298 299 300 // Can we fastpath static field access? Computes field's offset, volatility and whether the 301 // field is within the referrer (which can avoid checking class initialization). 302 bool ComputeStaticFieldInfo(uint32_t field_idx, const DexCompilationUnit* mUnit, bool is_put, 303 MemberOffset* field_offset, uint32_t* storage_index, 304 bool* is_referrers_class, bool* is_volatile, bool* is_initialized) 305 LOCKS_EXCLUDED(Locks::mutator_lock_); 306 307 // Can we fastpath a interface, super class or virtual method call? Computes method's vtable 308 // index. 309 bool ComputeInvokeInfo(const DexCompilationUnit* mUnit, const uint32_t dex_pc, 310 bool update_stats, bool enable_devirtualization, 311 InvokeType* type, MethodReference* target_method, int* vtable_idx, 312 uintptr_t* direct_code, uintptr_t* direct_method) 313 LOCKS_EXCLUDED(Locks::mutator_lock_); 314 315 const VerifiedMethod* GetVerifiedMethod(const DexFile* dex_file, uint32_t method_idx) const; 316 bool IsSafeCast(const DexCompilationUnit* mUnit, uint32_t dex_pc); 317 318 bool GetSupportBootImageFixup() const { 319 return support_boot_image_fixup_; 320 } 321 322 void SetSupportBootImageFixup(bool support_boot_image_fixup) { 323 support_boot_image_fixup_ = support_boot_image_fixup; 324 } 325 326 ArenaPool* GetArenaPool() { 327 return &arena_pool_; 328 } 329 330 bool WriteElf(const std::string& android_root, 331 bool is_host, 332 const std::vector<const DexFile*>& dex_files, 333 OatWriter* oat_writer, 334 File* file); 335 336 // TODO: move to a common home for llvm helpers once quick/portable are merged. 337 static void InstructionSetToLLVMTarget(InstructionSet instruction_set, 338 std::string* target_triple, 339 std::string* target_cpu, 340 std::string* target_attr); 341 342 void SetCompilerContext(void* compiler_context) { 343 compiler_context_ = compiler_context; 344 } 345 346 void* GetCompilerContext() const { 347 return compiler_context_; 348 } 349 350 size_t GetThreadCount() const { 351 return thread_count_; 352 } 353 354 bool GetDumpPasses() const { 355 return dump_passes_; 356 } 357 358 CumulativeLogger* GetTimingsLogger() const { 359 return timings_logger_; 360 } 361 362 // Checks if class specified by type_idx is one of the image_classes_ 363 bool IsImageClass(const char* descriptor) const; 364 365 void RecordClassStatus(ClassReference ref, mirror::Class::Status status) 366 LOCKS_EXCLUDED(compiled_classes_lock_); 367 368 std::vector<uint8_t>* DeduplicateCode(const std::vector<uint8_t>& code); 369 SrcMap* DeduplicateSrcMappingTable(const SrcMap& src_map); 370 std::vector<uint8_t>* DeduplicateMappingTable(const std::vector<uint8_t>& code); 371 std::vector<uint8_t>* DeduplicateVMapTable(const std::vector<uint8_t>& code); 372 std::vector<uint8_t>* DeduplicateGCMap(const std::vector<uint8_t>& code); 373 std::vector<uint8_t>* DeduplicateCFIInfo(const std::vector<uint8_t>* cfi_info); 374 375 ProfileFile profile_file_; 376 bool profile_present_; 377 378 // Should the compiler run on this method given profile information? 379 bool SkipCompilation(const std::string& method_name); 380 381 private: 382 // These flags are internal to CompilerDriver for collecting INVOKE resolution statistics. 383 // The only external contract is that unresolved method has flags 0 and resolved non-0. 384 enum { 385 kBitMethodResolved = 0, 386 kBitVirtualMadeDirect, 387 kBitPreciseTypeDevirtualization, 388 kBitDirectCallToBoot, 389 kBitDirectMethodToBoot 390 }; 391 static constexpr int kFlagMethodResolved = 1 << kBitMethodResolved; 392 static constexpr int kFlagVirtualMadeDirect = 1 << kBitVirtualMadeDirect; 393 static constexpr int kFlagPreciseTypeDevirtualization = 1 << kBitPreciseTypeDevirtualization; 394 static constexpr int kFlagDirectCallToBoot = 1 << kBitDirectCallToBoot; 395 static constexpr int kFlagDirectMethodToBoot = 1 << kBitDirectMethodToBoot; 396 static constexpr int kFlagsMethodResolvedVirtualMadeDirect = 397 kFlagMethodResolved | kFlagVirtualMadeDirect; 398 static constexpr int kFlagsMethodResolvedPreciseTypeDevirtualization = 399 kFlagsMethodResolvedVirtualMadeDirect | kFlagPreciseTypeDevirtualization; 400 401 public: // TODO make private or eliminate. 402 // Compute constant code and method pointers when possible. 403 void GetCodeAndMethodForDirectCall(InvokeType* type, InvokeType sharp_type, 404 bool no_guarantee_of_dex_cache_entry, 405 mirror::Class* referrer_class, 406 mirror::ArtMethod* method, 407 int* stats_flags, 408 MethodReference* target_method, 409 uintptr_t* direct_code, uintptr_t* direct_method) 410 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 411 412 private: 413 void PreCompile(jobject class_loader, const std::vector<const DexFile*>& dex_files, 414 ThreadPool* thread_pool, TimingLogger* timings) 415 LOCKS_EXCLUDED(Locks::mutator_lock_); 416 417 void LoadImageClasses(TimingLogger* timings); 418 419 // Attempt to resolve all type, methods, fields, and strings 420 // referenced from code in the dex file following PathClassLoader 421 // ordering semantics. 422 void Resolve(jobject class_loader, const std::vector<const DexFile*>& dex_files, 423 ThreadPool* thread_pool, TimingLogger* timings) 424 LOCKS_EXCLUDED(Locks::mutator_lock_); 425 void ResolveDexFile(jobject class_loader, const DexFile& dex_file, 426 const std::vector<const DexFile*>& dex_files, 427 ThreadPool* thread_pool, TimingLogger* timings) 428 LOCKS_EXCLUDED(Locks::mutator_lock_); 429 430 void Verify(jobject class_loader, const std::vector<const DexFile*>& dex_files, 431 ThreadPool* thread_pool, TimingLogger* timings); 432 void VerifyDexFile(jobject class_loader, const DexFile& dex_file, 433 const std::vector<const DexFile*>& dex_files, 434 ThreadPool* thread_pool, TimingLogger* timings) 435 LOCKS_EXCLUDED(Locks::mutator_lock_); 436 437 void SetVerified(jobject class_loader, const std::vector<const DexFile*>& dex_files, 438 ThreadPool* thread_pool, TimingLogger* timings); 439 void SetVerifiedDexFile(jobject class_loader, const DexFile& dex_file, 440 const std::vector<const DexFile*>& dex_files, 441 ThreadPool* thread_pool, TimingLogger* timings) 442 LOCKS_EXCLUDED(Locks::mutator_lock_); 443 444 void InitializeClasses(jobject class_loader, const std::vector<const DexFile*>& dex_files, 445 ThreadPool* thread_pool, TimingLogger* timings) 446 LOCKS_EXCLUDED(Locks::mutator_lock_); 447 void InitializeClasses(jobject class_loader, const DexFile& dex_file, 448 const std::vector<const DexFile*>& dex_files, 449 ThreadPool* thread_pool, TimingLogger* timings) 450 LOCKS_EXCLUDED(Locks::mutator_lock_, compiled_classes_lock_); 451 452 void UpdateImageClasses(TimingLogger* timings) LOCKS_EXCLUDED(Locks::mutator_lock_); 453 static void FindClinitImageClassesCallback(mirror::Object* object, void* arg) 454 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 455 456 void Compile(jobject class_loader, const std::vector<const DexFile*>& dex_files, 457 ThreadPool* thread_pool, TimingLogger* timings); 458 void CompileDexFile(jobject class_loader, const DexFile& dex_file, 459 const std::vector<const DexFile*>& dex_files, 460 ThreadPool* thread_pool, TimingLogger* timings) 461 LOCKS_EXCLUDED(Locks::mutator_lock_); 462 void CompileMethod(const DexFile::CodeItem* code_item, uint32_t access_flags, 463 InvokeType invoke_type, uint16_t class_def_idx, uint32_t method_idx, 464 jobject class_loader, const DexFile& dex_file, 465 DexToDexCompilationLevel dex_to_dex_compilation_level) 466 LOCKS_EXCLUDED(compiled_methods_lock_); 467 468 static void CompileClass(const ParallelCompilationManager* context, size_t class_def_index) 469 LOCKS_EXCLUDED(Locks::mutator_lock_); 470 471 const CompilerOptions* const compiler_options_; 472 VerificationResults* const verification_results_; 473 DexFileToMethodInlinerMap* const method_inliner_map_; 474 475 std::unique_ptr<Compiler> compiler_; 476 477 const InstructionSet instruction_set_; 478 const InstructionSetFeatures* const instruction_set_features_; 479 480 // All class references that require 481 mutable ReaderWriterMutex freezing_constructor_lock_ DEFAULT_MUTEX_ACQUIRED_AFTER; 482 std::set<ClassReference> freezing_constructor_classes_ GUARDED_BY(freezing_constructor_lock_); 483 484 typedef SafeMap<const ClassReference, CompiledClass*> ClassTable; 485 // All class references that this compiler has compiled. 486 mutable Mutex compiled_classes_lock_ DEFAULT_MUTEX_ACQUIRED_AFTER; 487 ClassTable compiled_classes_ GUARDED_BY(compiled_classes_lock_); 488 489 typedef SafeMap<const MethodReference, CompiledMethod*, MethodReferenceComparator> MethodTable; 490 // All method references that this compiler has compiled. 491 mutable Mutex compiled_methods_lock_ DEFAULT_MUTEX_ACQUIRED_AFTER; 492 MethodTable compiled_methods_ GUARDED_BY(compiled_methods_lock_); 493 // Number of non-relative patches in all compiled methods. These patches need space 494 // in the .oat_patches ELF section if requested in the compiler options. 495 size_t non_relative_linker_patch_count_ GUARDED_BY(compiled_methods_lock_); 496 497 const bool image_; 498 499 // If image_ is true, specifies the classes that will be included in 500 // the image. Note if image_classes_ is nullptr, all classes are 501 // included in the image. 502 std::unique_ptr<std::set<std::string>> image_classes_; 503 504 size_t thread_count_; 505 uint64_t start_ns_; 506 507 class AOTCompilationStats; 508 std::unique_ptr<AOTCompilationStats> stats_; 509 510 bool dump_stats_; 511 const bool dump_passes_; 512 513 CumulativeLogger* const timings_logger_; 514 515 typedef void (*CompilerCallbackFn)(CompilerDriver& driver); 516 typedef MutexLock* (*CompilerMutexLockFn)(CompilerDriver& driver); 517 518 void* compiler_library_; 519 520 typedef void (*DexToDexCompilerFn)(CompilerDriver& driver, 521 const DexFile::CodeItem* code_item, 522 uint32_t access_flags, InvokeType invoke_type, 523 uint32_t class_dex_idx, uint32_t method_idx, 524 jobject class_loader, const DexFile& dex_file, 525 DexToDexCompilationLevel dex_to_dex_compilation_level); 526 DexToDexCompilerFn dex_to_dex_compiler_; 527 528 void* compiler_context_; 529 530 pthread_key_t tls_key_; 531 532 // Arena pool used by the compiler. 533 ArenaPool arena_pool_; 534 535 typedef void (*CompilerEnableAutoElfLoadingFn)(CompilerDriver& driver); 536 CompilerEnableAutoElfLoadingFn compiler_enable_auto_elf_loading_; 537 538 typedef const void* (*CompilerGetMethodCodeAddrFn) 539 (const CompilerDriver& driver, const CompiledMethod* cm, const mirror::ArtMethod* method); 540 CompilerGetMethodCodeAddrFn compiler_get_method_code_addr_; 541 542 bool support_boot_image_fixup_; 543 544 // DeDuplication data structures, these own the corresponding byte arrays. 545 template <typename ByteArray> 546 class DedupeHashFunc { 547 public: 548 size_t operator()(const ByteArray& array) const { 549 // For small arrays compute a hash using every byte. 550 static const size_t kSmallArrayThreshold = 16; 551 size_t hash = 0x811c9dc5; 552 if (array.size() <= kSmallArrayThreshold) { 553 for (auto b : array) { 554 hash = (hash * 16777619) ^ static_cast<uint8_t>(b); 555 } 556 } else { 557 // For larger arrays use the 2 bytes at 6 bytes (the location of a push registers 558 // instruction field for quick generated code on ARM) and then select a number of other 559 // values at random. 560 static const size_t kRandomHashCount = 16; 561 for (size_t i = 0; i < 2; ++i) { 562 uint8_t b = static_cast<uint8_t>(array[i + 6]); 563 hash = (hash * 16777619) ^ b; 564 } 565 for (size_t i = 2; i < kRandomHashCount; ++i) { 566 size_t r = i * 1103515245 + 12345; 567 uint8_t b = static_cast<uint8_t>(array[r % array.size()]); 568 hash = (hash * 16777619) ^ b; 569 } 570 } 571 hash += hash << 13; 572 hash ^= hash >> 7; 573 hash += hash << 3; 574 hash ^= hash >> 17; 575 hash += hash << 5; 576 return hash; 577 } 578 }; 579 580 DedupeSet<std::vector<uint8_t>, size_t, DedupeHashFunc<std::vector<uint8_t>>, 4> dedupe_code_; 581 DedupeSet<SrcMap, size_t, DedupeHashFunc<SrcMap>, 4> dedupe_src_mapping_table_; 582 DedupeSet<std::vector<uint8_t>, size_t, DedupeHashFunc<std::vector<uint8_t>>, 4> dedupe_mapping_table_; 583 DedupeSet<std::vector<uint8_t>, size_t, DedupeHashFunc<std::vector<uint8_t>>, 4> dedupe_vmap_table_; 584 DedupeSet<std::vector<uint8_t>, size_t, DedupeHashFunc<std::vector<uint8_t>>, 4> dedupe_gc_map_; 585 DedupeSet<std::vector<uint8_t>, size_t, DedupeHashFunc<std::vector<uint8_t>>, 4> dedupe_cfi_info_; 586 587 DISALLOW_COPY_AND_ASSIGN(CompilerDriver); 588}; 589 590} // namespace art 591 592#endif // ART_COMPILER_DRIVER_COMPILER_DRIVER_H_ 593