170 void PhaseLive::stats(uint iters) const {
171 }
172 #endif
173
174 // Get an IndexSet for a block. Return existing one, if any. Make a new
175 // empty one if a prior one does not exist.
176 IndexSet *PhaseLive::getset( Block *p ) {
177 IndexSet *delta = _deltas[p->_pre_order-1];
178 if( !delta ) // Not on worklist?
179 // Get a free set; flag as being on worklist
180 delta = _deltas[p->_pre_order-1] = getfreeset();
181 return delta; // Return set of new live-out items
182 }
183
184 // Pull from free list, or allocate. Internal allocation on the returned set
185 // is always from thread local storage.
186 IndexSet *PhaseLive::getfreeset( ) {
187 IndexSet *f = _free_IndexSet;
188 if( !f ) {
189 f = new IndexSet;
190 // f->set_arena(Thread::current()->resource_area());
191 f->initialize(_maxlrg, Thread::current()->resource_area());
192 } else {
193 // Pull from free list
194 _free_IndexSet = f->next();
195 //f->_cnt = 0; // Reset to empty
196 // f->set_arena(Thread::current()->resource_area());
197 f->initialize(_maxlrg, Thread::current()->resource_area());
198 }
199 return f;
200 }
201
202 // Free an IndexSet from a block.
203 void PhaseLive::freeset( const Block *p ) {
204 IndexSet *f = _deltas[p->_pre_order-1];
205 f->set_next(_free_IndexSet);
206 _free_IndexSet = f; // Drop onto free list
207 _deltas[p->_pre_order-1] = NULL;
208 }
209
210 // Add a live-out value to a given blocks live-out set. If it is new, then
211 // also add it to the delta set and stick the block on the worklist.
212 void PhaseLive::add_liveout( Block *p, uint r, VectorSet &first_pass ) {
213 IndexSet *live = &_live[p->_pre_order-1];
214 if( live->insert(r) ) { // If actually inserted...
215 // We extended the live-out set. See if the value is generated locally.
216 // If it is not, then we must extend the live-in set.
217 if( !_defs[p->_pre_order-1].member( r ) ) {
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170 void PhaseLive::stats(uint iters) const {
171 }
172 #endif
173
174 // Get an IndexSet for a block. Return existing one, if any. Make a new
175 // empty one if a prior one does not exist.
176 IndexSet *PhaseLive::getset( Block *p ) {
177 IndexSet *delta = _deltas[p->_pre_order-1];
178 if( !delta ) // Not on worklist?
179 // Get a free set; flag as being on worklist
180 delta = _deltas[p->_pre_order-1] = getfreeset();
181 return delta; // Return set of new live-out items
182 }
183
184 // Pull from free list, or allocate. Internal allocation on the returned set
185 // is always from thread local storage.
186 IndexSet *PhaseLive::getfreeset( ) {
187 IndexSet *f = _free_IndexSet;
188 if( !f ) {
189 f = new IndexSet;
190 f->initialize_in_resource_arena(_maxlrg);
191 } else {
192 // Pull from free list
193 _free_IndexSet = f->next();
194 f->initialize_in_resource_arena(_maxlrg);
195 }
196 return f;
197 }
198
199 // Free an IndexSet from a block.
200 void PhaseLive::freeset( const Block *p ) {
201 IndexSet *f = _deltas[p->_pre_order-1];
202 f->set_next(_free_IndexSet);
203 _free_IndexSet = f; // Drop onto free list
204 _deltas[p->_pre_order-1] = NULL;
205 }
206
207 // Add a live-out value to a given blocks live-out set. If it is new, then
208 // also add it to the delta set and stick the block on the worklist.
209 void PhaseLive::add_liveout( Block *p, uint r, VectorSet &first_pass ) {
210 IndexSet *live = &_live[p->_pre_order-1];
211 if( live->insert(r) ) { // If actually inserted...
212 // We extended the live-out set. See if the value is generated locally.
213 // If it is not, then we must extend the live-in set.
214 if( !_defs[p->_pre_order-1].member( r ) ) {
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