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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()

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Use shorter instruction sequences for atomic add and atomic exchange when possible.

Reviewed-by: kvn, jrose
This commit is contained in:
Roland Westrelin 2012-09-20 16:49:17 +02:00
parent 25f18c20d9
commit 302540691b
38 changed files with 880 additions and 124 deletions
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5
hotspot/src/share/vm/adlc/formssel.cpp
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@ -751,6 +751,7 @@ bool InstructForm::captures_bottom_type(FormDict &globals) const {
!strcmp(_matrule->_rChild->_opType,"DecodeN") ||
!strcmp(_matrule->_rChild->_opType,"EncodeP") ||
!strcmp(_matrule->_rChild->_opType,"LoadN") ||
!strcmp(_matrule->_rChild->_opType,"GetAndSetN") ||
!strcmp(_matrule->_rChild->_opType,"LoadNKlass") ||
!strcmp(_matrule->_rChild->_opType,"CreateEx") || // type of exception
!strcmp(_matrule->_rChild->_opType,"CheckCastPP")) ) return true;
@ -3399,7 +3400,9 @@ int MatchNode::needs_ideal_memory_edge(FormDict &globals) const {
"StorePConditional", "StoreIConditional", "StoreLConditional",
"CompareAndSwapI", "CompareAndSwapL", "CompareAndSwapP", "CompareAndSwapN",
"StoreCM",
"ClearArray"
"ClearArray",
"GetAndAddI", "GetAndSetI", "GetAndSetP",
"GetAndAddL", "GetAndSetL", "GetAndSetN",
};
int cnt = sizeof(needs_ideal_memory_list)/sizeof(char*);
if( strcmp(_opType,"PrefetchRead")==0 ||