Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/opto/memnode.cpp
src/share/vm/opto/memnode.cpp
- changeset 2816
- 286c498ae0d4
- parent 2810
- 66b0e2371912
- parent 2784
- 92add02409c9
- child 3047
- f1c12354c3f7
equal
deleted
inserted
replaced
| 2815:01fd6090fdd8 | 2816:286c498ae0d4 |
|---|---|
| 2153 if (p) return (p == NodeSentinel) ? NULL : p; | 2153 if (p) return (p == NodeSentinel) ? NULL : p; |
| 2154 | 2154 |
| 2155 Node* mem = in(MemNode::Memory); | 2155 Node* mem = in(MemNode::Memory); |
| 2156 Node* address = in(MemNode::Address); | 2156 Node* address = in(MemNode::Address); |
| 2157 | 2157 |
| 2158 // Back-to-back stores to same address? Fold em up. | 2158 // Back-to-back stores to same address? Fold em up. Generally |
| 2159 // Generally unsafe if I have intervening uses... | 2159 // unsafe if I have intervening uses... Also disallowed for StoreCM |
| 2160 if (mem->is_Store() && phase->eqv_uncast(mem->in(MemNode::Address), address)) { | 2160 // since they must follow each StoreP operation. Redundant StoreCMs |
| 2161 // are eliminated just before matching in final_graph_reshape. | |
| 2162 if (mem->is_Store() && phase->eqv_uncast(mem->in(MemNode::Address), address) && | |
| 2163 mem->Opcode() != Op_StoreCM) { | |
| 2161 // Looking at a dead closed cycle of memory? | 2164 // Looking at a dead closed cycle of memory? |
| 2162 assert(mem != mem->in(MemNode::Memory), "dead loop in StoreNode::Ideal"); | 2165 assert(mem != mem->in(MemNode::Memory), "dead loop in StoreNode::Ideal"); |
| 2163 | 2166 |
| 2164 assert(Opcode() == mem->Opcode() || | 2167 assert(Opcode() == mem->Opcode() || |
| 2165 phase->C->get_alias_index(adr_type()) == Compile::AliasIdxRaw, | 2168 phase->C->get_alias_index(adr_type()) == Compile::AliasIdxRaw, |
