src/share/vm/c1/c1_IR.cpp
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src/share/vm/c1/c1_IR.cpp

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 191   // Figure out whether we have to preserve expression stack elements
 192   // for parent scopes, and if so, how many
 193   IRScope* cur_scope = this;
 194   while (cur_scope != NULL && !cur_scope->xhandlers()->has_handlers()) {
 195     cur_scope = cur_scope->caller();
 196   }
 197   _lock_stack_size = (cur_scope == NULL ? 0 :
 198                       (cur_scope->caller_state() == NULL ? 0 :
 199                        cur_scope->caller_state()->stack_size()));
 200 }
 201 
 202 int IRScope::top_scope_bci() const {
 203   assert(!is_top_scope(), "no correct answer for top scope possible");
 204   const IRScope* scope = this;
 205   while (!scope->caller()->is_top_scope()) {
 206     scope = scope->caller();
 207   }
 208   return scope->caller_bci();
 209 }
 210 









 211 
 212 
 213 // Implementation of CodeEmitInfo
 214 
 215 // Stack must be NON-null
 216 CodeEmitInfo::CodeEmitInfo(int bci, ValueStack* stack, XHandlers* exception_handlers)
 217   : _scope(stack->scope())
 218   , _bci(bci)
 219   , _scope_debug_info(NULL)
 220   , _oop_map(NULL)
 221   , _stack(stack)
 222   , _exception_handlers(exception_handlers)
 223   , _next(NULL)
 224   , _id(-1) {
 225   assert(_stack != NULL, "must be non null");
 226   assert(_bci == SynchronizationEntryBCI || Bytecodes::is_defined(scope()->method()->java_code_at_bci(_bci)), "make sure bci points at a real bytecode");
 227 }
 228 
 229 
 230 CodeEmitInfo::CodeEmitInfo(CodeEmitInfo* info, bool lock_stack_only)


 236   if (lock_stack_only) {
 237     if (info->_stack != NULL) {
 238       _stack = info->_stack->copy_locks();
 239     } else {
 240       _stack = NULL;
 241     }
 242   } else {
 243     _stack = info->_stack;
 244   }
 245 
 246   // deep copy of exception handlers
 247   if (info->_exception_handlers != NULL) {
 248     _exception_handlers = new XHandlers(info->_exception_handlers);
 249   }
 250 }
 251 
 252 
 253 void CodeEmitInfo::record_debug_info(DebugInformationRecorder* recorder, int pc_offset) {
 254   // record the safepoint before recording the debug info for enclosing scopes
 255   recorder->add_safepoint(pc_offset, _oop_map->deep_copy());
 256   _scope_debug_info->record_debug_info(recorder, pc_offset);
 257   recorder->end_safepoint(pc_offset);
 258 }
 259 
 260 
 261 void CodeEmitInfo::add_register_oop(LIR_Opr opr) {
 262   assert(_oop_map != NULL, "oop map must already exist");
 263   assert(opr->is_single_cpu(), "should not call otherwise");
 264 
 265   int frame_size = frame_map()->framesize();
 266   int arg_count = frame_map()->oop_map_arg_count();
 267   VMReg name = frame_map()->regname(opr);
 268   _oop_map->set_oop(name);
 269 }
 270 
 271 
 272 
 273 
 274 // Implementation of IR
 275 
 276 IR::IR(Compilation* compilation, ciMethod* method, int osr_bci) :




 191   // Figure out whether we have to preserve expression stack elements
 192   // for parent scopes, and if so, how many
 193   IRScope* cur_scope = this;
 194   while (cur_scope != NULL && !cur_scope->xhandlers()->has_handlers()) {
 195     cur_scope = cur_scope->caller();
 196   }
 197   _lock_stack_size = (cur_scope == NULL ? 0 :
 198                       (cur_scope->caller_state() == NULL ? 0 :
 199                        cur_scope->caller_state()->stack_size()));
 200 }
 201 
 202 int IRScope::top_scope_bci() const {
 203   assert(!is_top_scope(), "no correct answer for top scope possible");
 204   const IRScope* scope = this;
 205   while (!scope->caller()->is_top_scope()) {
 206     scope = scope->caller();
 207   }
 208   return scope->caller_bci();
 209 }
 210 
 211 bool IRScopeDebugInfo::should_reexecute() {
 212   ciMethod* cur_method = scope()->method();
 213   int       cur_bci    = bci();
 214   if (cur_method != NULL && cur_bci != SynchronizationEntryBCI) {
 215     Bytecodes::Code code = cur_method->java_code_at_bci(cur_bci);
 216     return Interpreter::bytecodes_to_reexecute(code);
 217   } else
 218     return false;
 219 }
 220 
 221 
 222 // Implementation of CodeEmitInfo
 223 
 224 // Stack must be NON-null
 225 CodeEmitInfo::CodeEmitInfo(int bci, ValueStack* stack, XHandlers* exception_handlers)
 226   : _scope(stack->scope())
 227   , _bci(bci)
 228   , _scope_debug_info(NULL)
 229   , _oop_map(NULL)
 230   , _stack(stack)
 231   , _exception_handlers(exception_handlers)
 232   , _next(NULL)
 233   , _id(-1) {
 234   assert(_stack != NULL, "must be non null");
 235   assert(_bci == SynchronizationEntryBCI || Bytecodes::is_defined(scope()->method()->java_code_at_bci(_bci)), "make sure bci points at a real bytecode");
 236 }
 237 
 238 
 239 CodeEmitInfo::CodeEmitInfo(CodeEmitInfo* info, bool lock_stack_only)


 245   if (lock_stack_only) {
 246     if (info->_stack != NULL) {
 247       _stack = info->_stack->copy_locks();
 248     } else {
 249       _stack = NULL;
 250     }
 251   } else {
 252     _stack = info->_stack;
 253   }
 254 
 255   // deep copy of exception handlers
 256   if (info->_exception_handlers != NULL) {
 257     _exception_handlers = new XHandlers(info->_exception_handlers);
 258   }
 259 }
 260 
 261 
 262 void CodeEmitInfo::record_debug_info(DebugInformationRecorder* recorder, int pc_offset) {
 263   // record the safepoint before recording the debug info for enclosing scopes
 264   recorder->add_safepoint(pc_offset, _oop_map->deep_copy());
 265   _scope_debug_info->record_debug_info(recorder, pc_offset, true/*topmost*/);
 266   recorder->end_safepoint(pc_offset);
 267 }
 268 
 269 
 270 void CodeEmitInfo::add_register_oop(LIR_Opr opr) {
 271   assert(_oop_map != NULL, "oop map must already exist");
 272   assert(opr->is_single_cpu(), "should not call otherwise");
 273 
 274   int frame_size = frame_map()->framesize();
 275   int arg_count = frame_map()->oop_map_arg_count();
 276   VMReg name = frame_map()->regname(opr);
 277   _oop_map->set_oop(name);
 278 }
 279 
 280 
 281 
 282 
 283 // Implementation of IR
 284 
 285 IR::IR(Compilation* compilation, ciMethod* method, int osr_bci) :


src/share/vm/c1/c1_IR.cpp
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