Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/adlc/formssel.cpp
src/share/vm/adlc/formssel.cpp
- changeset 6378
- 8a8ff6b577ed
- parent 6198
- 55fb97c4c58d
- child 6518
- 62c54fcc0a35
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| 6376:cfd4aac53239 | 6378:8a8ff6b577ed |
|---|---|
| 647 // Machine independent loads must be checked for anti-dependences | 647 // Machine independent loads must be checked for anti-dependences |
| 648 // Check if instruction has a USE of a memory operand class, or a def. | 648 // Check if instruction has a USE of a memory operand class, or a def. |
| 649 int USE_of_memory = 0; | 649 int USE_of_memory = 0; |
| 650 int DEF_of_memory = 0; | 650 int DEF_of_memory = 0; |
| 651 const char* last_memory_DEF = NULL; // to test DEF/USE pairing in asserts | 651 const char* last_memory_DEF = NULL; // to test DEF/USE pairing in asserts |
| 652 const char* last_memory_USE = NULL; | |
| 652 Component *unique = NULL; | 653 Component *unique = NULL; |
| 653 Component *comp = NULL; | 654 Component *comp = NULL; |
| 654 ComponentList &components = (ComponentList &)_components; | 655 ComponentList &components = (ComponentList &)_components; |
| 655 | 656 |
| 656 components.reset(); | 657 components.reset(); |
| 668 } else if( comp->isa(Component::USE) ) { | 669 } else if( comp->isa(Component::USE) ) { |
| 669 if( last_memory_DEF != NULL ) { | 670 if( last_memory_DEF != NULL ) { |
| 670 assert(0 == strcmp(last_memory_DEF, comp->_name), "every memory DEF is followed by a USE of the same name"); | 671 assert(0 == strcmp(last_memory_DEF, comp->_name), "every memory DEF is followed by a USE of the same name"); |
| 671 last_memory_DEF = NULL; | 672 last_memory_DEF = NULL; |
| 672 } | 673 } |
| 673 USE_of_memory++; | 674 // Handles same memory being used multiple times in the case of BMI1 instructions. |
| 675 if (last_memory_USE != NULL) { | |
| 676 if (strcmp(comp->_name, last_memory_USE) != 0) { | |
| 677 USE_of_memory++; | |
| 678 } | |
| 679 } else { | |
| 680 USE_of_memory++; | |
| 681 } | |
| 682 last_memory_USE = comp->_name; | |
| 683 | |
| 674 if (DEF_of_memory == 0) // defs take precedence | 684 if (DEF_of_memory == 0) // defs take precedence |
| 675 unique = comp; | 685 unique = comp; |
| 676 } else { | 686 } else { |
| 677 assert(last_memory_DEF == NULL, "unpaired memory DEF"); | 687 assert(last_memory_DEF == NULL, "unpaired memory DEF"); |
| 678 } | 688 } |
