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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes

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Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv

Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold
This commit is contained in:
Coleen Phillimore 2008-04-13 17:43:42 -04:00
parent 680ecf1611
commit 4a831d45f0
273 changed files with 6585 additions and 2993 deletions
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15
hotspot/src/share/vm/opto/phaseX.cpp
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@ -744,20 +744,23 @@ void PhaseGVN::dead_loop_check( Node *n ) {
//=============================================================================
//------------------------------PhaseIterGVN-----------------------------------
// Initialize hash table to fresh and clean for +VerifyOpto
PhaseIterGVN::PhaseIterGVN( PhaseIterGVN *igvn, const char *dummy ) : PhaseGVN(igvn,dummy), _worklist( ) {
PhaseIterGVN::PhaseIterGVN( PhaseIterGVN *igvn, const char *dummy ) : PhaseGVN(igvn,dummy), _worklist( ),
_delay_transform(false) {
}
//------------------------------PhaseIterGVN-----------------------------------
// Initialize with previous PhaseIterGVN info; used by PhaseCCP
PhaseIterGVN::PhaseIterGVN( PhaseIterGVN *igvn ) : PhaseGVN(igvn),
_worklist( igvn->_worklist )
_worklist( igvn->_worklist ),
_delay_transform(igvn->_delay_transform)
{
}
//------------------------------PhaseIterGVN-----------------------------------
// Initialize with previous PhaseGVN info from Parser
PhaseIterGVN::PhaseIterGVN( PhaseGVN *gvn ) : PhaseGVN(gvn),
_worklist(*C->for_igvn())
_worklist(*C->for_igvn()),
_delay_transform(false)
{
uint max;
@ -953,6 +956,12 @@ Node* PhaseIterGVN::register_new_node_with_optimizer(Node* n, Node* orig) {
//------------------------------transform--------------------------------------
// Non-recursive: idealize Node 'n' with respect to its inputs and its value
Node *PhaseIterGVN::transform( Node *n ) {
if (_delay_transform) {
// Register the node but don't optimize for now
register_new_node_with_optimizer(n);
return n;
}
// If brand new node, make space in type array, and give it a type.
ensure_type_or_null(n);
if (type_or_null(n) == NULL) {