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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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28
hotspot/src/share/vm/opto/memnode.cpp
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@ -2552,14 +2552,38 @@ const Type * SCMemProjNode::Value( PhaseTransform *phase ) const
}
//=============================================================================
LoadStoreNode::LoadStoreNode( Node *c, Node *mem, Node *adr, Node *val, Node *ex ) : Node(5) {
//----------------------------------LoadStoreNode------------------------------
LoadStoreNode::LoadStoreNode( Node *c, Node *mem, Node *adr, Node *val, const TypePtr* at, const Type* rt, uint required )
: Node(required),
_type(rt),
_adr_type(at)
{
init_req(MemNode::Control, c );
init_req(MemNode::Memory , mem);
init_req(MemNode::Address, adr);
init_req(MemNode::ValueIn, val);
init_req( ExpectedIn, ex );
init_class_id(Class_LoadStore);
}
uint LoadStoreNode::ideal_reg() const {
return _type->ideal_reg();
}
bool LoadStoreNode::result_not_used() const {
for( DUIterator_Fast imax, i = fast_outs(imax); i < imax; i++ ) {
Node *x = fast_out(i);
if (x->Opcode() == Op_SCMemProj) continue;
return false;
}
return true;
}
uint LoadStoreNode::size_of() const { return sizeof(*this); }
//=============================================================================
//----------------------------------LoadStoreConditionalNode--------------------
LoadStoreConditionalNode::LoadStoreConditionalNode( Node *c, Node *mem, Node *adr, Node *val, Node *ex ) : LoadStoreNode(c, mem, adr, val, NULL, TypeInt::BOOL, 5) {
init_req(ExpectedIn, ex );
}
//=============================================================================