compiler_driver.h revision c7399c82c27f85a2df2653e1eb8c0b60f2cfd934 
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 "arch/instruction_set.h"
25#include "base/arena_allocator.h"
26#include "base/mutex.h"
27#include "base/timing_logger.h"
28#include "class_reference.h"
29#include "compiler.h"
30#include "dex_file.h"
31#include "invoke_type.h"
32#include "method_reference.h"
33#include "mirror/class.h"  // For mirror::Class::Status.
34#include "os.h"
35#include "profiler.h"
36#include "runtime.h"
37#include "safe_map.h"
38#include "thread_pool.h"
39#include "utils/array_ref.h"
40#include "utils/dedupe_set.h"
41#include "utils/dex_cache_arrays_layout.h"
42#include "utils/swap_space.h"
43#include "utils.h"
44
45namespace art {
46
47namespace mirror {
48class DexCache;
49}  // namespace mirror
50
51namespace verifier {
52class MethodVerifier;
53}  // namespace verifier
54
55class CompiledClass;
56class CompiledMethod;
57class CompilerOptions;
58class DexCompilationUnit;
59class DexFileToMethodInlinerMap;
60struct InlineIGetIPutData;
61class InstructionSetFeatures;
62class OatWriter;
63class ParallelCompilationManager;
64class ScopedObjectAccess;
65template <class Allocator> class SrcMap;
66class SrcMapElem;
67using SwapSrcMap = SrcMap<SwapAllocator<SrcMapElem>>;
68template<class T> class Handle;
69class TimingLogger;
70class VerificationResults;
71class VerifiedMethod;
72
73enum EntryPointCallingConvention {
74  // ABI of invocations to a method's interpreter entry point.
75  kInterpreterAbi,
76  // ABI of calls to a method's native code, only used for native methods.
77  kJniAbi,
78  // ABI of calls to a method's quick code entry point.
79  kQuickAbi
80};
81
82enum DexToDexCompilationLevel {
83  kDontDexToDexCompile,   // Only meaning wrt image time interpretation.
84  kRequired,              // Dex-to-dex compilation required for correctness.
85  kOptimize               // Perform required transformation and peep-hole optimizations.
86};
87std::ostream& operator<<(std::ostream& os, const DexToDexCompilationLevel& rhs);
88
89static constexpr bool kUseMurmur3Hash = true;
90
91class CompilerDriver {
92 public:
93  // Create a compiler targeting the requested "instruction_set".
94  // "image" should be true if image specific optimizations should be
95  // enabled.  "image_classes" lets the compiler know what classes it
96  // can assume will be in the image, with nullptr implying all available
97  // classes.
98  explicit CompilerDriver(const CompilerOptions* compiler_options,
99                          VerificationResults* verification_results,
100                          DexFileToMethodInlinerMap* method_inliner_map,
101                          Compiler::Kind compiler_kind,
102                          InstructionSet instruction_set,
103                          const InstructionSetFeatures* instruction_set_features,
104                          bool image, std::set<std::string>* image_classes,
105                          std::set<std::string>* compiled_classes,
106                          size_t thread_count, bool dump_stats, bool dump_passes,
107                          const std::string& dump_cfg_file_name,
108                          CumulativeLogger* timer, int swap_fd,
109                          const std::string& profile_file);
110
111  ~CompilerDriver();
112
113  void CompileAll(jobject class_loader, const std::vector<const DexFile*>& dex_files,
114                  TimingLogger* timings)
115      LOCKS_EXCLUDED(Locks::mutator_lock_);
116
117  CompiledMethod* CompileMethod(Thread* self, mirror::ArtMethod*)
118      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) WARN_UNUSED;
119
120  // Compile a single Method.
121  void CompileOne(Thread* self, mirror::ArtMethod* method, TimingLogger* timings)
122      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
123
124  VerificationResults* GetVerificationResults() const {
125    return verification_results_;
126  }
127
128  DexFileToMethodInlinerMap* GetMethodInlinerMap() const {
129    return method_inliner_map_;
130  }
131
132  InstructionSet GetInstructionSet() const {
133    return instruction_set_;
134  }
135
136  const InstructionSetFeatures* GetInstructionSetFeatures() const {
137    return instruction_set_features_;
138  }
139
140  const CompilerOptions& GetCompilerOptions() const {
141    return *compiler_options_;
142  }
143
144  Compiler* GetCompiler() const {
145    return compiler_.get();
146  }
147
148  bool ProfilePresent() const {
149    return profile_present_;
150  }
151
152  // Are we compiling and creating an image file?
153  bool IsImage() const {
154    return image_;
155  }
156
157  const std::set<std::string>* GetImageClasses() const {
158    return image_classes_.get();
159  }
160
161  // Generate the trampolines that are invoked by unresolved direct methods.
162  const std::vector<uint8_t>* CreateInterpreterToInterpreterBridge() const
163      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
164  const std::vector<uint8_t>* CreateInterpreterToCompiledCodeBridge() const
165      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
166  const std::vector<uint8_t>* CreateJniDlsymLookup() const
167      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
168  const std::vector<uint8_t>* CreateQuickGenericJniTrampoline() const
169      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
170  const std::vector<uint8_t>* CreateQuickImtConflictTrampoline() const
171      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
172  const std::vector<uint8_t>* CreateQuickResolutionTrampoline() const
173      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
174  const std::vector<uint8_t>* CreateQuickToInterpreterBridge() const
175      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
176
177  CompiledClass* GetCompiledClass(ClassReference ref) const
178      LOCKS_EXCLUDED(compiled_classes_lock_);
179
180  CompiledMethod* GetCompiledMethod(MethodReference ref) const
181      LOCKS_EXCLUDED(compiled_methods_lock_);
182  size_t GetNonRelativeLinkerPatchCount() const
183      LOCKS_EXCLUDED(compiled_methods_lock_);
184
185  // Remove and delete a compiled method.
186  void RemoveCompiledMethod(const MethodReference& method_ref);
187
188  void AddRequiresConstructorBarrier(Thread* self, const DexFile* dex_file,
189                                     uint16_t class_def_index);
190  bool RequiresConstructorBarrier(Thread* self, const DexFile* dex_file, uint16_t class_def_index);
191
192  // Callbacks from compiler to see what runtime checks must be generated.
193
194  bool CanAssumeTypeIsPresentInDexCache(const DexFile& dex_file, uint32_t type_idx);
195
196  bool CanAssumeStringIsPresentInDexCache(const DexFile& dex_file, uint32_t string_idx)
197      LOCKS_EXCLUDED(Locks::mutator_lock_);
198
199  // Are runtime access checks necessary in the compiled code?
200  bool CanAccessTypeWithoutChecks(uint32_t referrer_idx, const DexFile& dex_file,
201                                  uint32_t type_idx, bool* type_known_final = nullptr,
202                                  bool* type_known_abstract = nullptr,
203                                  bool* equals_referrers_class = nullptr)
204      LOCKS_EXCLUDED(Locks::mutator_lock_);
205
206  // Are runtime access and instantiable checks necessary in the code?
207  bool CanAccessInstantiableTypeWithoutChecks(uint32_t referrer_idx, const DexFile& dex_file,
208                                              uint32_t type_idx)
209     LOCKS_EXCLUDED(Locks::mutator_lock_);
210
211  bool CanEmbedTypeInCode(const DexFile& dex_file, uint32_t type_idx,
212                          bool* is_type_initialized, bool* use_direct_type_ptr,
213                          uintptr_t* direct_type_ptr, bool* out_is_finalizable);
214
215  // Query methods for the java.lang.ref.Reference class.
216  bool CanEmbedReferenceTypeInCode(ClassReference* ref,
217                                   bool* use_direct_type_ptr, uintptr_t* direct_type_ptr);
218  uint32_t GetReferenceSlowFlagOffset() const;
219  uint32_t GetReferenceDisableFlagOffset() const;
220
221  // Get the DexCache for the
222  mirror::DexCache* GetDexCache(const DexCompilationUnit* mUnit)
223    SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
224
225  mirror::ClassLoader* GetClassLoader(ScopedObjectAccess& soa, const DexCompilationUnit* mUnit)
226    SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
227
228  // Resolve compiling method's class. Returns nullptr on failure.
229  mirror::Class* ResolveCompilingMethodsClass(
230      const ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache,
231      Handle<mirror::ClassLoader> class_loader, const DexCompilationUnit* mUnit)
232    SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
233
234  mirror::Class* ResolveClass(
235      const ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache,
236      Handle<mirror::ClassLoader> class_loader, uint16_t type_index,
237      const DexCompilationUnit* mUnit)
238    SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
239
240  // Resolve a field. Returns nullptr on failure, including incompatible class change.
241  // NOTE: Unlike ClassLinker's ResolveField(), this method enforces is_static.
242  mirror::ArtField* ResolveField(
243      const ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache,
244      Handle<mirror::ClassLoader> class_loader, const DexCompilationUnit* mUnit,
245      uint32_t field_idx, bool is_static)
246    SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
247
248  // Resolve a field with a given dex file.
249  mirror::ArtField* ResolveFieldWithDexFile(
250      const ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache,
251      Handle<mirror::ClassLoader> class_loader, const DexFile* dex_file,
252      uint32_t field_idx, bool is_static)
253    SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
254
255  // Get declaration location of a resolved field.
256  void GetResolvedFieldDexFileLocation(
257      mirror::ArtField* resolved_field, const DexFile** declaring_dex_file,
258      uint16_t* declaring_class_idx, uint16_t* declaring_field_idx)
259    SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
260
261  bool IsFieldVolatile(mirror::ArtField* field) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
262  MemberOffset GetFieldOffset(mirror::ArtField* field) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
263
264  // Find a dex cache for a dex file.
265  inline mirror::DexCache* FindDexCache(const DexFile* dex_file)
266      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
267
268  // Can we fast-path an IGET/IPUT access to an instance field? If yes, compute the field offset.
269  std::pair<bool, bool> IsFastInstanceField(
270      mirror::DexCache* dex_cache, mirror::Class* referrer_class,
271      mirror::ArtField* resolved_field, uint16_t field_idx)
272    SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
273
274  // Can we fast-path an SGET/SPUT access to a static field? If yes, compute the type index
275  // of the declaring class in the referrer's dex file.
276  std::pair<bool, bool> IsFastStaticField(
277      mirror::DexCache* dex_cache, mirror::Class* referrer_class,
278      mirror::ArtField* resolved_field, uint16_t field_idx, uint32_t* storage_index)
279    SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
280
281  // Is static field's in referrer's class?
282  bool IsStaticFieldInReferrerClass(mirror::Class* referrer_class, mirror::ArtField* resolved_field)
283    SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
284
285  // Is static field's class initialized?
286  bool IsStaticFieldsClassInitialized(mirror::Class* referrer_class,
287                                      mirror::ArtField* resolved_field)
288    SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
289
290  // Resolve a method. Returns nullptr on failure, including incompatible class change.
291  mirror::ArtMethod* ResolveMethod(
292      ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache,
293      Handle<mirror::ClassLoader> class_loader, const DexCompilationUnit* mUnit,
294      uint32_t method_idx, InvokeType invoke_type, bool check_incompatible_class_change = true)
295    SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
296
297  // Get declaration location of a resolved field.
298  void GetResolvedMethodDexFileLocation(
299      mirror::ArtMethod* resolved_method, const DexFile** declaring_dex_file,
300      uint16_t* declaring_class_idx, uint16_t* declaring_method_idx)
301    SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
302
303  // Get the index in the vtable of the method.
304  uint16_t GetResolvedMethodVTableIndex(
305      mirror::ArtMethod* resolved_method, InvokeType type)
306    SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
307
308  // Can we fast-path an INVOKE? If no, returns 0. If yes, returns a non-zero opaque flags value
309  // for ProcessedInvoke() and computes the necessary lowering info.
310  int IsFastInvoke(
311      ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache,
312      Handle<mirror::ClassLoader> class_loader, const DexCompilationUnit* mUnit,
313      mirror::Class* referrer_class, mirror::ArtMethod* resolved_method, InvokeType* invoke_type,
314      MethodReference* target_method, const MethodReference* devirt_target,
315      uintptr_t* direct_code, uintptr_t* direct_method)
316    SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
317
318  // Is method's class initialized for an invoke?
319  // For static invokes to determine whether we need to consider potential call to <clinit>().
320  // For non-static invokes, assuming a non-null reference, the class is always initialized.
321  bool IsMethodsClassInitialized(mirror::Class* referrer_class, mirror::ArtMethod* resolved_method)
322    SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
323
324  // Get the layout of dex cache arrays for a dex file. Returns invalid layout if the
325  // dex cache arrays don't have a fixed layout.
326  DexCacheArraysLayout GetDexCacheArraysLayout(const DexFile* dex_file);
327
328  void ProcessedInstanceField(bool resolved);
329  void ProcessedStaticField(bool resolved, bool local);
330  void ProcessedInvoke(InvokeType invoke_type, int flags);
331
332  void ComputeFieldInfo(uint32_t field_idx, const DexCompilationUnit* mUnit,
333                        const ScopedObjectAccess& soa, bool is_static,
334                        mirror::ArtField** resolved_field,
335                        mirror::Class** referrer_class,
336                        mirror::DexCache** dex_cache)
337      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
338
339  // Can we fast path instance field access? Computes field's offset and volatility.
340  bool ComputeInstanceFieldInfo(uint32_t field_idx, const DexCompilationUnit* mUnit, bool is_put,
341                                MemberOffset* field_offset, bool* is_volatile)
342      LOCKS_EXCLUDED(Locks::mutator_lock_);
343
344  mirror::ArtField* ComputeInstanceFieldInfo(uint32_t field_idx,
345                                             const DexCompilationUnit* mUnit,
346                                             bool is_put,
347                                             const ScopedObjectAccess& soa)
348      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
349
350
351  // Can we fastpath static field access? Computes field's offset, volatility and whether the
352  // field is within the referrer (which can avoid checking class initialization).
353  bool ComputeStaticFieldInfo(uint32_t field_idx, const DexCompilationUnit* mUnit, bool is_put,
354                              MemberOffset* field_offset, uint32_t* storage_index,
355                              bool* is_referrers_class, bool* is_volatile, bool* is_initialized,
356                              Primitive::Type* type)
357      LOCKS_EXCLUDED(Locks::mutator_lock_);
358
359  // Can we fastpath a interface, super class or virtual method call? Computes method's vtable
360  // index.
361  bool ComputeInvokeInfo(const DexCompilationUnit* mUnit, const uint32_t dex_pc,
362                         bool update_stats, bool enable_devirtualization,
363                         InvokeType* type, MethodReference* target_method, int* vtable_idx,
364                         uintptr_t* direct_code, uintptr_t* direct_method)
365      LOCKS_EXCLUDED(Locks::mutator_lock_);
366
367  const VerifiedMethod* GetVerifiedMethod(const DexFile* dex_file, uint32_t method_idx) const;
368  bool IsSafeCast(const DexCompilationUnit* mUnit, uint32_t dex_pc);
369
370  bool GetSupportBootImageFixup() const {
371    return support_boot_image_fixup_;
372  }
373
374  void SetSupportBootImageFixup(bool support_boot_image_fixup) {
375    support_boot_image_fixup_ = support_boot_image_fixup;
376  }
377
378  SwapAllocator<void>& GetSwapSpaceAllocator() {
379    return *swap_space_allocator_.get();
380  }
381
382  bool WriteElf(const std::string& android_root,
383                bool is_host,
384                const std::vector<const DexFile*>& dex_files,
385                OatWriter* oat_writer,
386                File* file);
387
388  void SetCompilerContext(void* compiler_context) {
389    compiler_context_ = compiler_context;
390  }
391
392  void* GetCompilerContext() const {
393    return compiler_context_;
394  }
395
396  size_t GetThreadCount() const {
397    return thread_count_;
398  }
399
400  bool GetDumpPasses() const {
401    return dump_passes_;
402  }
403
404  const std::string& GetDumpCfgFileName() const {
405    return dump_cfg_file_name_;
406  }
407
408  CumulativeLogger* GetTimingsLogger() const {
409    return timings_logger_;
410  }
411
412  void SetDedupeEnabled(bool dedupe_enabled) {
413    dedupe_enabled_ = dedupe_enabled;
414  }
415  bool DedupeEnabled() const {
416    return dedupe_enabled_;
417  }
418
419  // Checks if class specified by type_idx is one of the image_classes_
420  bool IsImageClass(const char* descriptor) const;
421
422  // Checks if the provided class should be compiled, i.e., is in classes_to_compile_.
423  bool IsClassToCompile(const char* descriptor) const;
424
425  void RecordClassStatus(ClassReference ref, mirror::Class::Status status)
426      LOCKS_EXCLUDED(compiled_classes_lock_);
427
428  SwapVector<uint8_t>* DeduplicateCode(const ArrayRef<const uint8_t>& code);
429  SwapSrcMap* DeduplicateSrcMappingTable(const ArrayRef<SrcMapElem>& src_map);
430  SwapVector<uint8_t>* DeduplicateMappingTable(const ArrayRef<const uint8_t>& code);
431  SwapVector<uint8_t>* DeduplicateVMapTable(const ArrayRef<const uint8_t>& code);
432  SwapVector<uint8_t>* DeduplicateGCMap(const ArrayRef<const uint8_t>& code);
433  SwapVector<uint8_t>* DeduplicateCFIInfo(const ArrayRef<const uint8_t>& cfi_info);
434
435  // Should the compiler run on this method given profile information?
436  bool SkipCompilation(const std::string& method_name);
437
438  // Get memory usage during compilation.
439  std::string GetMemoryUsageString(bool extended) const;
440
441  void SetHadHardVerifierFailure() {
442    had_hard_verifier_failure_ = true;
443  }
444
445 private:
446  // These flags are internal to CompilerDriver for collecting INVOKE resolution statistics.
447  // The only external contract is that unresolved method has flags 0 and resolved non-0.
448  enum {
449    kBitMethodResolved = 0,
450    kBitVirtualMadeDirect,
451    kBitPreciseTypeDevirtualization,
452    kBitDirectCallToBoot,
453    kBitDirectMethodToBoot
454  };
455  static constexpr int kFlagMethodResolved              = 1 << kBitMethodResolved;
456  static constexpr int kFlagVirtualMadeDirect           = 1 << kBitVirtualMadeDirect;
457  static constexpr int kFlagPreciseTypeDevirtualization = 1 << kBitPreciseTypeDevirtualization;
458  static constexpr int kFlagDirectCallToBoot            = 1 << kBitDirectCallToBoot;
459  static constexpr int kFlagDirectMethodToBoot          = 1 << kBitDirectMethodToBoot;
460  static constexpr int kFlagsMethodResolvedVirtualMadeDirect =
461      kFlagMethodResolved | kFlagVirtualMadeDirect;
462  static constexpr int kFlagsMethodResolvedPreciseTypeDevirtualization =
463      kFlagsMethodResolvedVirtualMadeDirect | kFlagPreciseTypeDevirtualization;
464
465 public:  // TODO make private or eliminate.
466  // Compute constant code and method pointers when possible.
467  void GetCodeAndMethodForDirectCall(/*out*/InvokeType* type,
468                                     InvokeType sharp_type,
469                                     bool no_guarantee_of_dex_cache_entry,
470                                     const mirror::Class* referrer_class,
471                                     mirror::ArtMethod* method,
472                                     /*out*/int* stats_flags,
473                                     MethodReference* target_method,
474                                     uintptr_t* direct_code, uintptr_t* direct_method)
475      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
476
477 private:
478  DexToDexCompilationLevel GetDexToDexCompilationlevel(
479      Thread* self, Handle<mirror::ClassLoader> class_loader, const DexFile& dex_file,
480      const DexFile::ClassDef& class_def) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
481
482  void PreCompile(jobject class_loader, const std::vector<const DexFile*>& dex_files,
483                  ThreadPool* thread_pool, TimingLogger* timings)
484      LOCKS_EXCLUDED(Locks::mutator_lock_);
485
486  void LoadImageClasses(TimingLogger* timings);
487
488  // Attempt to resolve all type, methods, fields, and strings
489  // referenced from code in the dex file following PathClassLoader
490  // ordering semantics.
491  void Resolve(jobject class_loader, const std::vector<const DexFile*>& dex_files,
492               ThreadPool* thread_pool, TimingLogger* timings)
493      LOCKS_EXCLUDED(Locks::mutator_lock_);
494  void ResolveDexFile(jobject class_loader, const DexFile& dex_file,
495                      const std::vector<const DexFile*>& dex_files,
496                      ThreadPool* thread_pool, TimingLogger* timings)
497      LOCKS_EXCLUDED(Locks::mutator_lock_);
498
499  void Verify(jobject class_loader, const std::vector<const DexFile*>& dex_files,
500              ThreadPool* thread_pool, TimingLogger* timings);
501  void VerifyDexFile(jobject class_loader, const DexFile& dex_file,
502                     const std::vector<const DexFile*>& dex_files,
503                     ThreadPool* thread_pool, TimingLogger* timings)
504      LOCKS_EXCLUDED(Locks::mutator_lock_);
505
506  void SetVerified(jobject class_loader, const std::vector<const DexFile*>& dex_files,
507                   ThreadPool* thread_pool, TimingLogger* timings);
508  void SetVerifiedDexFile(jobject class_loader, const DexFile& dex_file,
509                          const std::vector<const DexFile*>& dex_files,
510                          ThreadPool* thread_pool, TimingLogger* timings)
511      LOCKS_EXCLUDED(Locks::mutator_lock_);
512
513  void InitializeClasses(jobject class_loader, const std::vector<const DexFile*>& dex_files,
514                         ThreadPool* thread_pool, TimingLogger* timings)
515      LOCKS_EXCLUDED(Locks::mutator_lock_);
516  void InitializeClasses(jobject class_loader, const DexFile& dex_file,
517                         const std::vector<const DexFile*>& dex_files,
518                         ThreadPool* thread_pool, TimingLogger* timings)
519      LOCKS_EXCLUDED(Locks::mutator_lock_, compiled_classes_lock_);
520
521  void UpdateImageClasses(TimingLogger* timings) LOCKS_EXCLUDED(Locks::mutator_lock_);
522  static void FindClinitImageClassesCallback(mirror::Object* object, void* arg)
523      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
524
525  void Compile(jobject class_loader, const std::vector<const DexFile*>& dex_files,
526               ThreadPool* thread_pool, TimingLogger* timings);
527  void CompileDexFile(jobject class_loader, const DexFile& dex_file,
528                      const std::vector<const DexFile*>& dex_files,
529                      ThreadPool* thread_pool, TimingLogger* timings)
530      LOCKS_EXCLUDED(Locks::mutator_lock_);
531  void CompileMethod(Thread* self, const DexFile::CodeItem* code_item, uint32_t access_flags,
532                     InvokeType invoke_type, uint16_t class_def_idx, uint32_t method_idx,
533                     jobject class_loader, const DexFile& dex_file,
534                     DexToDexCompilationLevel dex_to_dex_compilation_level,
535                     bool compilation_enabled)
536      LOCKS_EXCLUDED(compiled_methods_lock_);
537
538  static void CompileClass(const ParallelCompilationManager* context, size_t class_def_index)
539      LOCKS_EXCLUDED(Locks::mutator_lock_);
540
541  // Swap pool and allocator used for native allocations. May be file-backed. Needs to be first
542  // as other fields rely on this.
543  std::unique_ptr<SwapSpace> swap_space_;
544  std::unique_ptr<SwapAllocator<void> > swap_space_allocator_;
545
546  ProfileFile profile_file_;
547  bool profile_present_;
548
549  const CompilerOptions* const compiler_options_;
550  VerificationResults* const verification_results_;
551  DexFileToMethodInlinerMap* const method_inliner_map_;
552
553  std::unique_ptr<Compiler> compiler_;
554  Compiler::Kind compiler_kind_;
555
556  const InstructionSet instruction_set_;
557  const InstructionSetFeatures* const instruction_set_features_;
558
559  // All class references that require
560  mutable ReaderWriterMutex freezing_constructor_lock_ DEFAULT_MUTEX_ACQUIRED_AFTER;
561  std::set<ClassReference> freezing_constructor_classes_ GUARDED_BY(freezing_constructor_lock_);
562
563  typedef SafeMap<const ClassReference, CompiledClass*> ClassTable;
564  // All class references that this compiler has compiled.
565  mutable Mutex compiled_classes_lock_ DEFAULT_MUTEX_ACQUIRED_AFTER;
566  ClassTable compiled_classes_ GUARDED_BY(compiled_classes_lock_);
567
568  typedef SafeMap<const MethodReference, CompiledMethod*, MethodReferenceComparator> MethodTable;
569  // All method references that this compiler has compiled.
570  mutable Mutex compiled_methods_lock_ DEFAULT_MUTEX_ACQUIRED_AFTER;
571  MethodTable compiled_methods_ GUARDED_BY(compiled_methods_lock_);
572  // Number of non-relative patches in all compiled methods. These patches need space
573  // in the .oat_patches ELF section if requested in the compiler options.
574  size_t non_relative_linker_patch_count_ GUARDED_BY(compiled_methods_lock_);
575
576  const bool image_;
577
578  // If image_ is true, specifies the classes that will be included in
579  // the image. Note if image_classes_ is nullptr, all classes are
580  // included in the image.
581  std::unique_ptr<std::set<std::string>> image_classes_;
582
583  // If image_ is true, specifies the classes that will be compiled in
584  // the image. Note if classes_to_compile_ is nullptr, all classes are
585  // included in the image.
586  std::unique_ptr<std::set<std::string>> classes_to_compile_;
587
588  bool had_hard_verifier_failure_;
589
590  size_t thread_count_;
591
592  class AOTCompilationStats;
593  std::unique_ptr<AOTCompilationStats> stats_;
594
595  bool dedupe_enabled_;
596  bool dump_stats_;
597  const bool dump_passes_;
598  const std::string& dump_cfg_file_name_;
599
600  CumulativeLogger* const timings_logger_;
601
602  typedef void (*CompilerCallbackFn)(CompilerDriver& driver);
603  typedef MutexLock* (*CompilerMutexLockFn)(CompilerDriver& driver);
604
605  typedef void (*DexToDexCompilerFn)(CompilerDriver& driver,
606                                     const DexFile::CodeItem* code_item,
607                                     uint32_t access_flags, InvokeType invoke_type,
608                                     uint32_t class_dex_idx, uint32_t method_idx,
609                                     jobject class_loader, const DexFile& dex_file,
610                                     DexToDexCompilationLevel dex_to_dex_compilation_level);
611  DexToDexCompilerFn dex_to_dex_compiler_;
612
613  void* compiler_context_;
614
615  bool support_boot_image_fixup_;
616
617  // DeDuplication data structures, these own the corresponding byte arrays.
618  template <typename ContentType>
619  class DedupeHashFunc {
620   public:
621    size_t operator()(const ArrayRef<ContentType>& array) const {
622      const uint8_t* data = reinterpret_cast<const uint8_t*>(array.data());
623      static_assert(IsPowerOfTwo(sizeof(ContentType)),
624          "ContentType is not power of two, don't know whether array layout is as assumed");
625      uint32_t len = sizeof(ContentType) * array.size();
626      if (kUseMurmur3Hash) {
627        static constexpr uint32_t c1 = 0xcc9e2d51;
628        static constexpr uint32_t c2 = 0x1b873593;
629        static constexpr uint32_t r1 = 15;
630        static constexpr uint32_t r2 = 13;
631        static constexpr uint32_t m = 5;
632        static constexpr uint32_t n = 0xe6546b64;
633
634        uint32_t hash = 0;
635
636        const int nblocks = len / 4;
637        typedef __attribute__((__aligned__(1))) uint32_t unaligned_uint32_t;
638        const unaligned_uint32_t *blocks = reinterpret_cast<const uint32_t*>(data);
639        int i;
640        for (i = 0; i < nblocks; i++) {
641          uint32_t k = blocks[i];
642          k *= c1;
643          k = (k << r1) | (k >> (32 - r1));
644          k *= c2;
645
646          hash ^= k;
647          hash = ((hash << r2) | (hash >> (32 - r2))) * m + n;
648        }
649
650        const uint8_t *tail = reinterpret_cast<const uint8_t*>(data + nblocks * 4);
651        uint32_t k1 = 0;
652
653        switch (len & 3) {
654          case 3:
655            k1 ^= tail[2] << 16;
656            FALLTHROUGH_INTENDED;
657          case 2:
658            k1 ^= tail[1] << 8;
659            FALLTHROUGH_INTENDED;
660          case 1:
661            k1 ^= tail[0];
662
663            k1 *= c1;
664            k1 = (k1 << r1) | (k1 >> (32 - r1));
665            k1 *= c2;
666            hash ^= k1;
667        }
668
669        hash ^= len;
670        hash ^= (hash >> 16);
671        hash *= 0x85ebca6b;
672        hash ^= (hash >> 13);
673        hash *= 0xc2b2ae35;
674        hash ^= (hash >> 16);
675
676        return hash;
677      } else {
678        size_t hash = 0x811c9dc5;
679        for (uint32_t i = 0; i < len; ++i) {
680          hash = (hash * 16777619) ^ data[i];
681        }
682        hash += hash << 13;
683        hash ^= hash >> 7;
684        hash += hash << 3;
685        hash ^= hash >> 17;
686        hash += hash << 5;
687        return hash;
688      }
689    }
690  };
691
692  DedupeSet<ArrayRef<const uint8_t>,
693            SwapVector<uint8_t>, size_t, DedupeHashFunc<const uint8_t>, 4> dedupe_code_;
694  DedupeSet<ArrayRef<SrcMapElem>,
695            SwapSrcMap, size_t, DedupeHashFunc<SrcMapElem>, 4> dedupe_src_mapping_table_;
696  DedupeSet<ArrayRef<const uint8_t>,
697            SwapVector<uint8_t>, size_t, DedupeHashFunc<const uint8_t>, 4> dedupe_mapping_table_;
698  DedupeSet<ArrayRef<const uint8_t>,
699            SwapVector<uint8_t>, size_t, DedupeHashFunc<const uint8_t>, 4> dedupe_vmap_table_;
700  DedupeSet<ArrayRef<const uint8_t>,
701            SwapVector<uint8_t>, size_t, DedupeHashFunc<const uint8_t>, 4> dedupe_gc_map_;
702  DedupeSet<ArrayRef<const uint8_t>,
703            SwapVector<uint8_t>, size_t, DedupeHashFunc<const uint8_t>, 4> dedupe_cfi_info_;
704
705  DISALLOW_COPY_AND_ASSIGN(CompilerDriver);
706};
707
708}  // namespace art
709
710#endif  // ART_COMPILER_DRIVER_COMPILER_DRIVER_H_
711