Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/opto/superword.cpp
src/share/vm/opto/superword.cpp
- changeset 9776
- ce42ae95d4d6
- parent 9768
- eaae2ae06faf
- child 9806
- 758c07667682
- child 9977
- e649f2136368
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inserted
replaced
| 9775:9b865b281711 | 9776:ce42ae95d4d6 |
|---|---|
| 2206 pre_opaq->set_req(1, constrained); | 2206 pre_opaq->set_req(1, constrained); |
| 2207 } | 2207 } |
| 2208 | 2208 |
| 2209 //----------------------------get_pre_loop_end--------------------------- | 2209 //----------------------------get_pre_loop_end--------------------------- |
| 2210 // Find pre loop end from main loop. Returns null if none. | 2210 // Find pre loop end from main loop. Returns null if none. |
| 2211 CountedLoopEndNode* SuperWord::get_pre_loop_end(CountedLoopNode *cl) { | 2211 CountedLoopEndNode* SuperWord::get_pre_loop_end(CountedLoopNode* cl) { |
| 2212 Node *ctrl = cl->in(LoopNode::EntryControl); | 2212 Node* ctrl = cl->in(LoopNode::EntryControl); |
| 2213 if (!ctrl->is_IfTrue() && !ctrl->is_IfFalse()) return NULL; | 2213 if (!ctrl->is_IfTrue() && !ctrl->is_IfFalse()) return NULL; |
| 2214 Node *iffm = ctrl->in(0); | 2214 Node* iffm = ctrl->in(0); |
| 2215 if (!iffm->is_If()) return NULL; | 2215 if (!iffm->is_If()) return NULL; |
| 2216 Node *p_f = iffm->in(0); | 2216 Node* bolzm = iffm->in(1); |
| 2217 if (!bolzm->is_Bool()) return NULL; | |
| 2218 Node* cmpzm = bolzm->in(1); | |
| 2219 if (!cmpzm->is_Cmp()) return NULL; | |
| 2220 Node* opqzm = cmpzm->in(2); | |
| 2221 // Can not optimize a loop if zero-trip Opaque1 node is optimized | |
| 2222 // away and then another round of loop opts attempted. | |
| 2223 if (opqzm->Opcode() != Op_Opaque1) { | |
| 2224 return NULL; | |
| 2225 } | |
| 2226 Node* p_f = iffm->in(0); | |
| 2217 if (!p_f->is_IfFalse()) return NULL; | 2227 if (!p_f->is_IfFalse()) return NULL; |
| 2218 if (!p_f->in(0)->is_CountedLoopEnd()) return NULL; | 2228 if (!p_f->in(0)->is_CountedLoopEnd()) return NULL; |
| 2219 CountedLoopEndNode *pre_end = p_f->in(0)->as_CountedLoopEnd(); | 2229 CountedLoopEndNode* pre_end = p_f->in(0)->as_CountedLoopEnd(); |
| 2220 CountedLoopNode* loop_node = pre_end->loopnode(); | 2230 CountedLoopNode* loop_node = pre_end->loopnode(); |
| 2221 if (loop_node == NULL || !loop_node->is_pre_loop()) return NULL; | 2231 if (loop_node == NULL || !loop_node->is_pre_loop()) return NULL; |
| 2222 return pre_end; | 2232 return pre_end; |
| 2223 } | 2233 } |
| 2224 | 2234 |
