130 class IRScope: public CompilationResourceObj { |
130 class IRScope: public CompilationResourceObj { |
131 private: |
131 private: |
132 // hierarchy |
132 // hierarchy |
133 Compilation* _compilation; // the current compilation |
133 Compilation* _compilation; // the current compilation |
134 IRScope* _caller; // the caller scope, or NULL |
134 IRScope* _caller; // the caller scope, or NULL |
135 int _caller_bci; // the caller bci of the corresponding (inlined) invoke, or < 0 |
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136 ValueStack* _caller_state; // the caller state, or NULL |
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137 int _level; // the inlining level |
135 int _level; // the inlining level |
138 ciMethod* _method; // the corresponding method |
136 ciMethod* _method; // the corresponding method |
139 IRScopeList _callees; // the inlined method scopes |
137 IRScopeList _callees; // the inlined method scopes |
140 |
138 |
141 // graph |
139 // graph |
142 XHandlers* _xhandlers; // the exception handlers |
140 XHandlers* _xhandlers; // the exception handlers |
143 int _number_of_locks; // the number of monitor lock slots needed |
141 int _number_of_locks; // the number of monitor lock slots needed |
144 bool _monitor_pairing_ok; // the monitor pairing info |
142 bool _monitor_pairing_ok; // the monitor pairing info |
145 BlockBegin* _start; // the start block, successsors are method entries |
143 BlockBegin* _start; // the start block, successsors are method entries |
146 |
144 |
147 // lock stack management |
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148 int _lock_stack_size; // number of expression stack elements which, if present, |
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149 // must be spilled to the stack because of exception |
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150 // handling inside inlined methods |
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151 |
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152 BitMap _requires_phi_function; // bit is set if phi functions at loop headers are necessary for a local variable |
145 BitMap _requires_phi_function; // bit is set if phi functions at loop headers are necessary for a local variable |
153 |
146 |
154 // helper functions |
147 // helper functions |
155 BlockBegin* header_block(BlockBegin* entry, BlockBegin::Flag f, ValueStack* state); |
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156 BlockBegin* build_graph(Compilation* compilation, int osr_bci); |
148 BlockBegin* build_graph(Compilation* compilation, int osr_bci); |
157 |
149 |
158 public: |
150 public: |
159 // creation |
151 // creation |
160 IRScope(Compilation* compilation, IRScope* caller, int caller_bci, ciMethod* method, int osr_bci, bool create_graph = false); |
152 IRScope(Compilation* compilation, IRScope* caller, int caller_bci, ciMethod* method, int osr_bci, bool create_graph = false); |
161 |
153 |
162 // accessors |
154 // accessors |
163 Compilation* compilation() const { return _compilation; } |
155 Compilation* compilation() const { return _compilation; } |
164 IRScope* caller() const { return _caller; } |
156 IRScope* caller() const { return _caller; } |
165 int caller_bci() const { return _caller_bci; } |
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166 ValueStack* caller_state() const { return _caller_state; } |
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167 int level() const { return _level; } |
157 int level() const { return _level; } |
168 ciMethod* method() const { return _method; } |
158 ciMethod* method() const { return _method; } |
169 int max_stack() const; // NOTE: expensive |
159 int max_stack() const; // NOTE: expensive |
170 int lock_stack_size() const { |
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171 assert(_lock_stack_size != -1, "uninitialized"); |
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172 return _lock_stack_size; |
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173 } |
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174 BitMap& requires_phi_function() { return _requires_phi_function; } |
160 BitMap& requires_phi_function() { return _requires_phi_function; } |
175 |
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176 // mutators |
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177 // Needed because caller state is not ready at time of IRScope construction |
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178 void set_caller_state(ValueStack* state) { _caller_state = state; } |
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179 // Needed because caller state changes after IRScope construction. |
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180 // Computes number of expression stack elements whose state must be |
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181 // preserved in the case of an exception; these may be seen by |
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182 // caller scopes. Zero when inlining of methods containing exception |
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183 // handlers is disabled, otherwise a conservative approximation. |
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184 void compute_lock_stack_size(); |
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185 |
161 |
186 // hierarchy |
162 // hierarchy |
187 bool is_top_scope() const { return _caller == NULL; } |
163 bool is_top_scope() const { return _caller == NULL; } |
188 void add_callee(IRScope* callee) { _callees.append(callee); } |
164 void add_callee(IRScope* callee) { _callees.append(callee); } |
189 int number_of_callees() const { return _callees.length(); } |
165 int number_of_callees() const { return _callees.length(); } |
190 IRScope* callee_no(int i) const { return _callees.at(i); } |
166 IRScope* callee_no(int i) const { return _callees.at(i); } |
191 int top_scope_bci() const; |
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192 |
167 |
193 // accessors, graph |
168 // accessors, graph |
194 bool is_valid() const { return start() != NULL; } |
169 bool is_valid() const { return start() != NULL; } |
195 XHandlers* xhandlers() const { return _xhandlers; } |
170 XHandlers* xhandlers() const { return _xhandlers; } |
196 int number_of_locks() const { return _number_of_locks; } |
171 int number_of_locks() const { return _number_of_locks; } |
264 IRScopeDebugInfo* _scope_debug_info; |
239 IRScopeDebugInfo* _scope_debug_info; |
265 IRScope* _scope; |
240 IRScope* _scope; |
266 XHandlers* _exception_handlers; |
241 XHandlers* _exception_handlers; |
267 OopMap* _oop_map; |
242 OopMap* _oop_map; |
268 ValueStack* _stack; // used by deoptimization (contains also monitors |
243 ValueStack* _stack; // used by deoptimization (contains also monitors |
269 int _bci; |
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270 CodeEmitInfo* _next; |
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271 int _id; |
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272 bool _is_method_handle_invoke; // true if the associated call site is a MethodHandle call site. |
244 bool _is_method_handle_invoke; // true if the associated call site is a MethodHandle call site. |
273 |
245 |
274 FrameMap* frame_map() const { return scope()->compilation()->frame_map(); } |
246 FrameMap* frame_map() const { return scope()->compilation()->frame_map(); } |
275 Compilation* compilation() const { return scope()->compilation(); } |
247 Compilation* compilation() const { return scope()->compilation(); } |
276 |
248 |
277 public: |
249 public: |
278 |
250 |
279 // use scope from ValueStack |
251 // use scope from ValueStack |
280 CodeEmitInfo(int bci, ValueStack* stack, XHandlers* exception_handlers); |
252 CodeEmitInfo(ValueStack* stack, XHandlers* exception_handlers); |
281 |
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282 // used by natives |
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283 CodeEmitInfo(IRScope* scope, int bci) |
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284 : _scope(scope) |
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285 , _bci(bci) |
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286 , _oop_map(NULL) |
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287 , _scope_debug_info(NULL) |
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288 , _stack(NULL) |
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289 , _exception_handlers(NULL) |
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290 , _next(NULL) |
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291 , _id(-1) |
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292 , _is_method_handle_invoke(false) { |
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293 } |
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294 |
253 |
295 // make a copy |
254 // make a copy |
296 CodeEmitInfo(CodeEmitInfo* info, bool lock_stack_only = false); |
255 CodeEmitInfo(CodeEmitInfo* info, ValueStack* stack = NULL); |
297 |
256 |
298 // accessors |
257 // accessors |
299 OopMap* oop_map() { return _oop_map; } |
258 OopMap* oop_map() { return _oop_map; } |
300 ciMethod* method() const { return _scope->method(); } |
259 ciMethod* method() const { return _scope->method(); } |
301 IRScope* scope() const { return _scope; } |
260 IRScope* scope() const { return _scope; } |
302 XHandlers* exception_handlers() const { return _exception_handlers; } |
261 XHandlers* exception_handlers() const { return _exception_handlers; } |
303 ValueStack* stack() const { return _stack; } |
262 ValueStack* stack() const { return _stack; } |
304 int bci() const { return _bci; } |
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305 |
263 |
306 void add_register_oop(LIR_Opr opr); |
264 void add_register_oop(LIR_Opr opr); |
307 void record_debug_info(DebugInformationRecorder* recorder, int pc_offset); |
265 void record_debug_info(DebugInformationRecorder* recorder, int pc_offset); |
308 |
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309 CodeEmitInfo* next() const { return _next; } |
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310 void set_next(CodeEmitInfo* next) { _next = next; } |
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311 |
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312 int id() const { return _id; } |
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313 void set_id(int id) { _id = id; } |
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314 |
266 |
315 bool is_method_handle_invoke() const { return _is_method_handle_invoke; } |
267 bool is_method_handle_invoke() const { return _is_method_handle_invoke; } |
316 void set_is_method_handle_invoke(bool x) { _is_method_handle_invoke = x; } |
268 void set_is_method_handle_invoke(bool x) { _is_method_handle_invoke = x; } |
317 }; |
269 }; |
318 |
270 |