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comparison src/share/vm/adlc/formssel.cpp @ 17810:62c54fcc0a35

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Merge
author kvn
date Tue, 25 Mar 2014 17:07:36 -0700
parents a9becfeecd1b 8a8ff6b577ed
children 78bbf4d43a14
comparison
equal deleted inserted replaced
17809:a433eb716ce1 17810:62c54fcc0a35
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
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.
686 if (last_memory_USE != NULL) {
687 if (strcmp(comp->_name, last_memory_USE) != 0) {
688 USE_of_memory++;
689 }
690 } else {
691 USE_of_memory++;
692 }
693 last_memory_USE = comp->_name;
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 }