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comparison src/share/vm/adlc/formssel.cpp @ 681:fbde8ec322d0

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6761600: Use sse 4.2 in intrinsics Summary: Use SSE 4.2 in intrinsics for String.{compareTo/equals/indexOf} and Arrays.equals. Reviewed-by: kvn, never, jrose
author cfang
date Tue, 31 Mar 2009 14:07:08 -0700
parents 7bb995fbd3c0
children f9094a5e1c8a
comparison
equal deleted inserted replaced
676:d3676b4cb78c 681:fbde8ec322d0
572 572
573 // !!!!! !!!!! !!!!! 573 // !!!!! !!!!! !!!!!
574 // TEMPORARY 574 // TEMPORARY
575 // if( is_simple_chain_rule(globals) ) return false; 575 // if( is_simple_chain_rule(globals) ) return false;
576 576
577 // String-compare uses many memorys edges, but writes none 577 // String.(compareTo/equals/indexOf) and Arrays.equals use many memorys edges,
578 // but writes none
578 if( _matrule && _matrule->_rChild && 579 if( _matrule && _matrule->_rChild &&
579 strcmp(_matrule->_rChild->_opType,"StrComp")==0 ) 580 ( strcmp(_matrule->_rChild->_opType,"StrComp" )==0 ||
581 strcmp(_matrule->_rChild->_opType,"StrEquals" )==0 ||
582 strcmp(_matrule->_rChild->_opType,"StrIndexOf" )==0 ||
583 strcmp(_matrule->_rChild->_opType,"AryEq" )==0 ))
580 return true; 584 return true;
581 585
582 // Check if instruction has a USE of a memory operand class, but no defs 586 // Check if instruction has a USE of a memory operand class, but no defs
583 bool USE_of_memory = false; 587 bool USE_of_memory = false;
584 bool DEF_of_memory = false; 588 bool DEF_of_memory = false;
813 strcmp(_matrule->_opType,"SafePoint" )==0 || 817 strcmp(_matrule->_opType,"SafePoint" )==0 ||
814 strcmp(_matrule->_opType,"Halt" )==0 ) 818 strcmp(_matrule->_opType,"Halt" )==0 )
815 return AdlcVMDeps::Parms; // Skip the machine-state edges 819 return AdlcVMDeps::Parms; // Skip the machine-state edges
816 820
817 if( _matrule->_rChild && 821 if( _matrule->_rChild &&
818 strcmp(_matrule->_rChild->_opType,"StrComp")==0 ) { 822 ( strcmp(_matrule->_rChild->_opType,"StrComp" )==0 ||
819 // String compare takes 1 control and 4 memory edges. 823 strcmp(_matrule->_rChild->_opType,"StrEquals" )==0 ||
824 strcmp(_matrule->_rChild->_opType,"StrIndexOf")==0 )) {
825 // String.(compareTo/equals/indexOf) take 1 control and 4 memory edges.
820 return 5; 826 return 5;
821 } 827 }
822 828
823 // Check for handling of 'Memory' input/edge in the ideal world. 829 // Check for handling of 'Memory' input/edge in the ideal world.
824 // The AD file writer is shielded from knowledge of these edges. 830 // The AD file writer is shielded from knowledge of these edges.