Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/opto/memnode.cpp
src/share/vm/opto/memnode.cpp
- changeset 9686
- 025ce746a942
- parent 9654
- 6b67e2bcf2be
- child 9703
- 2fdf635bcf28
- child 9735
- bd6ec847115e
equal
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replaced
| 9685:9f0ea552da23 | 9686:025ce746a942 |
|---|---|
| 3351 // an initialization. Returns zero if a check fails. | 3351 // an initialization. Returns zero if a check fails. |
| 3352 // On success, returns the (constant) offset to which the store applies, | 3352 // On success, returns the (constant) offset to which the store applies, |
| 3353 // within the initialized memory. | 3353 // within the initialized memory. |
| 3354 intptr_t InitializeNode::can_capture_store(StoreNode* st, PhaseTransform* phase, bool can_reshape) { | 3354 intptr_t InitializeNode::can_capture_store(StoreNode* st, PhaseTransform* phase, bool can_reshape) { |
| 3355 const int FAIL = 0; | 3355 const int FAIL = 0; |
| 3356 if (st->is_unaligned_access()) { | |
| 3357 return FAIL; | |
| 3358 } | |
| 3359 if (st->req() != MemNode::ValueIn + 1) | 3356 if (st->req() != MemNode::ValueIn + 1) |
| 3360 return FAIL; // an inscrutable StoreNode (card mark?) | 3357 return FAIL; // an inscrutable StoreNode (card mark?) |
| 3361 Node* ctl = st->in(MemNode::Control); | 3358 Node* ctl = st->in(MemNode::Control); |
| 3362 if (!(ctl != NULL && ctl->is_Proj() && ctl->in(0) == this)) | 3359 if (!(ctl != NULL && ctl->is_Proj() && ctl->in(0) == this)) |
| 3363 return FAIL; // must be unconditional after the initialization | 3360 return FAIL; // must be unconditional after the initialization |
| 3369 AllocateNode* alloc = AllocateNode::Ideal_allocation(adr, phase, offset); | 3366 AllocateNode* alloc = AllocateNode::Ideal_allocation(adr, phase, offset); |
| 3370 if (alloc == NULL) | 3367 if (alloc == NULL) |
| 3371 return FAIL; // inscrutable address | 3368 return FAIL; // inscrutable address |
| 3372 if (alloc != allocation()) | 3369 if (alloc != allocation()) |
| 3373 return FAIL; // wrong allocation! (store needs to float up) | 3370 return FAIL; // wrong allocation! (store needs to float up) |
| 3371 int size_in_bytes = st->memory_size(); | |
| 3372 if ((size_in_bytes != 0) && (offset % size_in_bytes) != 0) { | |
| 3373 return FAIL; // mismatched access | |
| 3374 } | |
| 3374 Node* val = st->in(MemNode::ValueIn); | 3375 Node* val = st->in(MemNode::ValueIn); |
| 3375 int complexity_count = 0; | 3376 int complexity_count = 0; |
| 3376 if (!detect_init_independence(val, complexity_count)) | 3377 if (!detect_init_independence(val, complexity_count)) |
| 3377 return FAIL; // stored value must be 'simple enough' | 3378 return FAIL; // stored value must be 'simple enough' |
| 3378 | 3379 |
