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658 // Machine independent loads must be checked for anti-dependences |
658 // Machine independent loads must be checked for anti-dependences |
659 // Check if instruction has a USE of a memory operand class, or a def. |
659 // Check if instruction has a USE of a memory operand class, or a def. |
660 int USE_of_memory = 0; |
660 int USE_of_memory = 0; |
661 int DEF_of_memory = 0; |
661 int DEF_of_memory = 0; |
662 const char* last_memory_DEF = NULL; // to test DEF/USE pairing in asserts |
662 const char* last_memory_DEF = NULL; // to test DEF/USE pairing in asserts |
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663 const char* last_memory_USE = NULL; |
663 Component *unique = NULL; |
664 Component *unique = NULL; |
664 Component *comp = NULL; |
665 Component *comp = NULL; |
665 ComponentList &components = (ComponentList &)_components; |
666 ComponentList &components = (ComponentList &)_components; |
666 |
667 |
667 components.reset(); |
668 components.reset(); |
679 } else if( comp->isa(Component::USE) ) { |
680 } else if( comp->isa(Component::USE) ) { |
680 if( last_memory_DEF != NULL ) { |
681 if( last_memory_DEF != NULL ) { |
681 assert(0 == strcmp(last_memory_DEF, comp->_name), "every memory DEF is followed by a USE of the same name"); |
682 assert(0 == strcmp(last_memory_DEF, comp->_name), "every memory DEF is followed by a USE of the same name"); |
682 last_memory_DEF = NULL; |
683 last_memory_DEF = NULL; |
683 } |
684 } |
684 USE_of_memory++; |
685 // Handles same memory being used multiple times in the case of BMI1 instructions. |
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686 if (last_memory_USE != NULL) { |
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687 if (strcmp(comp->_name, last_memory_USE) != 0) { |
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688 USE_of_memory++; |
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689 } |
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690 } else { |
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691 USE_of_memory++; |
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692 } |
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693 last_memory_USE = comp->_name; |
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694 |
685 if (DEF_of_memory == 0) // defs take precedence |
695 if (DEF_of_memory == 0) // defs take precedence |
686 unique = comp; |
696 unique = comp; |
687 } else { |
697 } else { |
688 assert(last_memory_DEF == NULL, "unpaired memory DEF"); |
698 assert(last_memory_DEF == NULL, "unpaired memory DEF"); |
689 } |
699 } |