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src/hotspot/share/ci/ciMethod.hpp

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 29 #include "ci/ciInstanceKlass.hpp"
 30 #include "ci/ciObject.hpp"
 31 #include "ci/ciSignature.hpp"
 32 #include "classfile/vmIntrinsics.hpp"
 33 #include "compiler/methodLiveness.hpp"
 34 #include "compiler/compilerOracle.hpp"
 35 #include "oops/method.hpp"
 36 #include "runtime/handles.hpp"
 37 #include "utilities/bitMap.hpp"
 38 
 39 class ciMethodBlocks;
 40 class MethodLiveness;
 41 class Arena;
 42 class BCEscapeAnalyzer;
 43 class InlineTree;
 44 class xmlStream;
 45 
 46 // Whether profiling found an oop to be always, never or sometimes
 47 // null
 48 enum ProfilePtrKind {

 49   ProfileAlwaysNull,
 50   ProfileNeverNull,
 51   ProfileMaybeNull
 52 };
 53 
 54 // ciMethod
 55 //
 56 // This class represents a Method* in the HotSpot virtual
 57 // machine.
 58 class ciMethod : public ciMetadata {
 59   friend class CompileBroker;
 60   CI_PACKAGE_ACCESS
 61   friend class ciEnv;
 62   friend class ciExceptionHandlerStream;
 63   friend class ciBytecodeStream;
 64   friend class ciMethodHandle;
 65   friend class ciReplay;
 66   friend class InlineTree;
 67 
 68  private:

181 
182   // Method code and related information.
183   address code()                                 { if (_code == nullptr) load_code(); return _code; }
184   int code_size() const                          { check_is_loaded(); return _code_size; }
185   int max_stack() const                          { check_is_loaded(); return _max_stack; }
186   int max_locals() const                         { check_is_loaded(); return _max_locals; }
187   vmIntrinsicID intrinsic_id() const             { check_is_loaded(); return _intrinsic_id; }
188   bool has_exception_handlers() const            { check_is_loaded(); return _handler_count > 0; }
189   int exception_table_length() const             { check_is_loaded(); return _handler_count; }
190   int interpreter_invocation_count() const       { check_is_loaded(); return _interpreter_invocation_count; }
191   int interpreter_throwout_count() const         { check_is_loaded(); return _interpreter_throwout_count; }
192   int size_of_parameters() const                 { check_is_loaded(); return _size_of_parameters; }
193 
194   // Code size for inlining decisions.
195   int code_size_for_inlining();
196 
197   bool caller_sensitive()       const { return get_Method()->caller_sensitive();       }
198   bool force_inline()           const { return get_Method()->force_inline();           }
199   bool dont_inline()            const { return get_Method()->dont_inline();            }
200   bool intrinsic_candidate()    const { return get_Method()->intrinsic_candidate();    }
201   bool is_static_initializer()  const { return get_Method()->is_static_initializer();  }
202   bool changes_current_thread() const { return get_Method()->changes_current_thread(); }
203 
204   bool check_intrinsic_candidate() const {
205     if (intrinsic_id() == vmIntrinsics::_blackhole) {
206       // This is the intrinsic without an associated method, so no intrinsic_candidate
207       // flag is set. The intrinsic is still correct.
208       return true;
209     }
210     return (CheckIntrinsics ? intrinsic_candidate() : true);
211   }
212 
213   int highest_osr_comp_level();
214 
215   Bytecodes::Code java_code_at_bci(int bci) {
216     address bcp = code() + bci;
217     return Bytecodes::java_code_at(nullptr, bcp);
218   }
219   Bytecodes::Code raw_code_at_bci(int bci) {
220     address bcp = code() + bci;
221     return Bytecodes::code_at(nullptr, bcp);

251   // dead when those paths merge. Since the interpreter's viewpoint is
252   // used when gc'ing an interpreter frame we need to use its viewpoint
253   // during OSR when loading the locals.
254 
255   ResourceBitMap live_local_oops_at_bci(int bci);
256 
257   bool needs_clinit_barrier() const;
258 
259 #ifdef COMPILER1
260   const BitMap& bci_block_start();
261 #endif
262 
263   ciTypeFlow*   get_flow_analysis();
264   ciTypeFlow*   get_osr_flow_analysis(int osr_bci);  // alternate entry point
265   ciCallProfile call_profile_at_bci(int bci);
266 
267   // Does type profiling provide any useful information at this point?
268   bool          argument_profiled_type(int bci, int i, ciKlass*& type, ProfilePtrKind& ptr_kind);
269   bool          parameter_profiled_type(int i, ciKlass*& type, ProfilePtrKind& ptr_kind);
270   bool          return_profiled_type(int bci, ciKlass*& type, ProfilePtrKind& ptr_kind);
271 



272   ciField*      get_field_at_bci( int bci, bool &will_link);
273   ciMethod*     get_method_at_bci(int bci, bool &will_link, ciSignature* *declared_signature);
274   ciMethod*     get_method_at_bci(int bci) {
275     bool ignored_will_link;
276     ciSignature* ignored_declared_signature;
277     return get_method_at_bci(bci, ignored_will_link, &ignored_declared_signature);
278   }
279 
280   ciKlass*      get_declared_method_holder_at_bci(int bci);
281 
282   ciSignature*  get_declared_signature_at_bci(int bci) {
283     bool ignored_will_link;
284     ciSignature* declared_signature;
285     get_method_at_bci(bci, ignored_will_link, &declared_signature);
286     assert(declared_signature != nullptr, "cannot be null");
287     return declared_signature;
288   }
289 
290   // Given a certain calling environment, find the monomorphic target
291   // for the call.  Return null if the call is not monomorphic in

323   bool is_ignored_by_security_stack_walk() const;
324 
325   // JSR 292 support
326   bool is_method_handle_intrinsic()  const;
327   bool is_compiled_lambda_form() const;
328   bool has_member_arg() const;
329 
330   // What kind of ciObject is this?
331   bool is_method() const                         { return true; }
332 
333   // Java access flags
334   bool is_public      () const                   { return flags().is_public(); }
335   bool is_private     () const                   { return flags().is_private(); }
336   bool is_protected   () const                   { return flags().is_protected(); }
337   bool is_static      () const                   { return flags().is_static(); }
338   bool is_final       () const                   { return flags().is_final(); }
339   bool is_synchronized() const                   { return flags().is_synchronized(); }
340   bool is_native      () const                   { return flags().is_native(); }
341   bool is_interface   () const                   { return flags().is_interface(); }
342   bool is_abstract    () const                   { return flags().is_abstract(); }

343 
344   // Other flags
345   bool is_final_method() const                   { return is_final() || holder()->is_final(); }
346   bool is_default_method() const                 { return !is_abstract() && !is_private() &&
347                                                           holder()->is_interface(); }
348   bool is_overpass    () const                   { check_is_loaded(); return _is_overpass; }
349   bool has_loops      () const;
350   bool has_jsrs       () const;
351   bool is_getter      () const;
352   bool is_setter      () const;
353   bool is_accessor    () const;
354   bool is_initializer () const;
355   bool is_empty       () const;
356   bool can_be_statically_bound() const           { return _can_be_statically_bound; }
357   bool has_reserved_stack_access() const         { return _has_reserved_stack_access; }
358   bool is_boxing_method() const;
359   bool is_unboxing_method() const;



360   bool is_vector_method() const;
361   bool is_object_initializer() const;
362 
363   bool can_be_statically_bound(ciInstanceKlass* context) const;
364 
365   bool can_omit_stack_trace() const;
366 
367   // Replay data methods
368   static void dump_name_as_ascii(outputStream* st, Method* method);
369   void dump_name_as_ascii(outputStream* st);
370   void dump_replay_data(outputStream* st);
371 
372   // Print the bytecodes of this method.
373   void print_codes_on(outputStream* st);
374   void print_codes() {
375     print_codes_on(tty);
376   }
377   void print_codes_on(int from, int to, outputStream* st);
378 
379   // Print the name of this method in various incarnations.
380   void print_name(outputStream* st = tty);
381   void print_short_name(outputStream* st = tty);
382 
383   static bool is_consistent_info(ciMethod* declared_method, ciMethod* resolved_method);





384 };
385 
386 #endif // SHARE_CI_CIMETHOD_HPP

 29 #include "ci/ciInstanceKlass.hpp"
 30 #include "ci/ciObject.hpp"
 31 #include "ci/ciSignature.hpp"
 32 #include "classfile/vmIntrinsics.hpp"
 33 #include "compiler/methodLiveness.hpp"
 34 #include "compiler/compilerOracle.hpp"
 35 #include "oops/method.hpp"
 36 #include "runtime/handles.hpp"
 37 #include "utilities/bitMap.hpp"
 38 
 39 class ciMethodBlocks;
 40 class MethodLiveness;
 41 class Arena;
 42 class BCEscapeAnalyzer;
 43 class InlineTree;
 44 class xmlStream;
 45 
 46 // Whether profiling found an oop to be always, never or sometimes
 47 // null
 48 enum ProfilePtrKind {
 49   ProfileUnknownNull,
 50   ProfileAlwaysNull,
 51   ProfileNeverNull,
 52   ProfileMaybeNull
 53 };
 54 
 55 // ciMethod
 56 //
 57 // This class represents a Method* in the HotSpot virtual
 58 // machine.
 59 class ciMethod : public ciMetadata {
 60   friend class CompileBroker;
 61   CI_PACKAGE_ACCESS
 62   friend class ciEnv;
 63   friend class ciExceptionHandlerStream;
 64   friend class ciBytecodeStream;
 65   friend class ciMethodHandle;
 66   friend class ciReplay;
 67   friend class InlineTree;
 68 
 69  private:

182 
183   // Method code and related information.
184   address code()                                 { if (_code == nullptr) load_code(); return _code; }
185   int code_size() const                          { check_is_loaded(); return _code_size; }
186   int max_stack() const                          { check_is_loaded(); return _max_stack; }
187   int max_locals() const                         { check_is_loaded(); return _max_locals; }
188   vmIntrinsicID intrinsic_id() const             { check_is_loaded(); return _intrinsic_id; }
189   bool has_exception_handlers() const            { check_is_loaded(); return _handler_count > 0; }
190   int exception_table_length() const             { check_is_loaded(); return _handler_count; }
191   int interpreter_invocation_count() const       { check_is_loaded(); return _interpreter_invocation_count; }
192   int interpreter_throwout_count() const         { check_is_loaded(); return _interpreter_throwout_count; }
193   int size_of_parameters() const                 { check_is_loaded(); return _size_of_parameters; }
194 
195   // Code size for inlining decisions.
196   int code_size_for_inlining();
197 
198   bool caller_sensitive()       const { return get_Method()->caller_sensitive();       }
199   bool force_inline()           const { return get_Method()->force_inline();           }
200   bool dont_inline()            const { return get_Method()->dont_inline();            }
201   bool intrinsic_candidate()    const { return get_Method()->intrinsic_candidate();    }
202   bool is_class_initializer()   const { return get_Method()->is_class_initializer();   }
203   bool changes_current_thread() const { return get_Method()->changes_current_thread(); }
204 
205   bool check_intrinsic_candidate() const {
206     if (intrinsic_id() == vmIntrinsics::_blackhole) {
207       // This is the intrinsic without an associated method, so no intrinsic_candidate
208       // flag is set. The intrinsic is still correct.
209       return true;
210     }
211     return (CheckIntrinsics ? intrinsic_candidate() : true);
212   }
213 
214   int highest_osr_comp_level();
215 
216   Bytecodes::Code java_code_at_bci(int bci) {
217     address bcp = code() + bci;
218     return Bytecodes::java_code_at(nullptr, bcp);
219   }
220   Bytecodes::Code raw_code_at_bci(int bci) {
221     address bcp = code() + bci;
222     return Bytecodes::code_at(nullptr, bcp);

252   // dead when those paths merge. Since the interpreter's viewpoint is
253   // used when gc'ing an interpreter frame we need to use its viewpoint
254   // during OSR when loading the locals.
255 
256   ResourceBitMap live_local_oops_at_bci(int bci);
257 
258   bool needs_clinit_barrier() const;
259 
260 #ifdef COMPILER1
261   const BitMap& bci_block_start();
262 #endif
263 
264   ciTypeFlow*   get_flow_analysis();
265   ciTypeFlow*   get_osr_flow_analysis(int osr_bci);  // alternate entry point
266   ciCallProfile call_profile_at_bci(int bci);
267 
268   // Does type profiling provide any useful information at this point?
269   bool          argument_profiled_type(int bci, int i, ciKlass*& type, ProfilePtrKind& ptr_kind);
270   bool          parameter_profiled_type(int i, ciKlass*& type, ProfilePtrKind& ptr_kind);
271   bool          return_profiled_type(int bci, ciKlass*& type, ProfilePtrKind& ptr_kind);
272   bool          array_access_profiled_type(int bci, ciKlass*& array_type, ciKlass*& element_type, ProfilePtrKind& element_ptr, bool &flat_array, bool &null_free);
273   bool          acmp_profiled_type(int bci, ciKlass*& left_type, ciKlass*& right_type,
274                                    ProfilePtrKind& left_ptr, ProfilePtrKind& right_ptr,
275                                    bool &left_inline_type, bool &right_inline_type);
276   ciField*      get_field_at_bci( int bci, bool &will_link);
277   ciMethod*     get_method_at_bci(int bci, bool &will_link, ciSignature* *declared_signature);
278   ciMethod*     get_method_at_bci(int bci) {
279     bool ignored_will_link;
280     ciSignature* ignored_declared_signature;
281     return get_method_at_bci(bci, ignored_will_link, &ignored_declared_signature);
282   }
283 
284   ciKlass*      get_declared_method_holder_at_bci(int bci);
285 
286   ciSignature*  get_declared_signature_at_bci(int bci) {
287     bool ignored_will_link;
288     ciSignature* declared_signature;
289     get_method_at_bci(bci, ignored_will_link, &declared_signature);
290     assert(declared_signature != nullptr, "cannot be null");
291     return declared_signature;
292   }
293 
294   // Given a certain calling environment, find the monomorphic target
295   // for the call.  Return null if the call is not monomorphic in

327   bool is_ignored_by_security_stack_walk() const;
328 
329   // JSR 292 support
330   bool is_method_handle_intrinsic()  const;
331   bool is_compiled_lambda_form() const;
332   bool has_member_arg() const;
333 
334   // What kind of ciObject is this?
335   bool is_method() const                         { return true; }
336 
337   // Java access flags
338   bool is_public      () const                   { return flags().is_public(); }
339   bool is_private     () const                   { return flags().is_private(); }
340   bool is_protected   () const                   { return flags().is_protected(); }
341   bool is_static      () const                   { return flags().is_static(); }
342   bool is_final       () const                   { return flags().is_final(); }
343   bool is_synchronized() const                   { return flags().is_synchronized(); }
344   bool is_native      () const                   { return flags().is_native(); }
345   bool is_interface   () const                   { return flags().is_interface(); }
346   bool is_abstract    () const                   { return flags().is_abstract(); }
347   bool has_vararg     () const                   { return flags().has_vararg(); }
348 
349   // Other flags
350   bool is_final_method() const                   { return is_final() || holder()->is_final(); }
351   bool is_default_method() const                 { return !is_abstract() && !is_private() &&
352                                                           holder()->is_interface(); }
353   bool is_overpass    () const                   { check_is_loaded(); return _is_overpass; }
354   bool has_loops      () const;
355   bool has_jsrs       () const;
356   bool is_getter      () const;
357   bool is_setter      () const;
358   bool is_accessor    () const;

359   bool is_empty       () const;
360   bool can_be_statically_bound() const           { return _can_be_statically_bound; }
361   bool has_reserved_stack_access() const         { return _has_reserved_stack_access; }
362   bool is_boxing_method() const;
363   bool is_unboxing_method() const;
364   bool is_object_constructor() const;
365   bool is_static_vnew_factory() const;
366   bool is_object_constructor_or_class_initializer() const;
367   bool is_vector_method() const;

368 
369   bool can_be_statically_bound(ciInstanceKlass* context) const;
370 
371   bool can_omit_stack_trace() const;
372 
373   // Replay data methods
374   static void dump_name_as_ascii(outputStream* st, Method* method);
375   void dump_name_as_ascii(outputStream* st);
376   void dump_replay_data(outputStream* st);
377 
378   // Print the bytecodes of this method.
379   void print_codes_on(outputStream* st);
380   void print_codes() {
381     print_codes_on(tty);
382   }
383   void print_codes_on(int from, int to, outputStream* st);
384 
385   // Print the name of this method in various incarnations.
386   void print_name(outputStream* st = tty);
387   void print_short_name(outputStream* st = tty);
388 
389   static bool is_consistent_info(ciMethod* declared_method, ciMethod* resolved_method);
390 
391   // Support for the inline type calling convention
392   bool is_scalarized_arg(int idx) const;
393   bool has_scalarized_args() const;
394   const GrowableArray<SigEntry>* get_sig_cc() const;
395 };
396 
397 #endif // SHARE_CI_CIMETHOD_HPP
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