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6761600: Use sse 4.2 in intrinsics

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Use SSE 4.2 in intrinsics for String.{compareTo/equals/indexOf} and Arrays.equals.

Reviewed-by: kvn, never, jrose
This commit is contained in:
Changpeng Fang 2009-03-31 14:07:08 -07:00
parent aee9449305
commit c0d62ad9e6
18 changed files with 1297 additions and 192 deletions
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14
hotspot/src/share/vm/adlc/formssel.cpp
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@ -574,9 +574,13 @@ bool InstructForm::needs_anti_dependence_check(FormDict &globals) const {
// TEMPORARY
// if( is_simple_chain_rule(globals) ) return false;
// String-compare uses many memorys edges, but writes none
// String.(compareTo/equals/indexOf) and Arrays.equals use many memorys edges,
// but writes none
if( _matrule && _matrule->_rChild &&
strcmp(_matrule->_rChild->_opType,"StrComp")==0 )
( strcmp(_matrule->_rChild->_opType,"StrComp" )==0 ||
strcmp(_matrule->_rChild->_opType,"StrEquals" )==0 ||
strcmp(_matrule->_rChild->_opType,"StrIndexOf" )==0 ||
strcmp(_matrule->_rChild->_opType,"AryEq" )==0 ))
return true;
// Check if instruction has a USE of a memory operand class, but no defs
@ -815,8 +819,10 @@ uint InstructForm::oper_input_base(FormDict &globals) {
return AdlcVMDeps::Parms; // Skip the machine-state edges
if( _matrule->_rChild &&
strcmp(_matrule->_rChild->_opType,"StrComp")==0 ) {
// String compare takes 1 control and 4 memory edges.
( strcmp(_matrule->_rChild->_opType,"StrComp" )==0 ||
strcmp(_matrule->_rChild->_opType,"StrEquals" )==0 ||
strcmp(_matrule->_rChild->_opType,"StrIndexOf")==0 )) {
// String.(compareTo/equals/indexOf) take 1 control and 4 memory edges.
return 5;
}