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6677629: PhaseIterGVN::subsume_node() should call hash_delete() and add_users_to_worklist()

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Use replace_node() method instead of subsume_node().

Reviewed-by: jrose, never
This commit is contained in:
Vladimir Kozlov 2010-06-28 14:54:39 -07:00
parent 8a416b2365
commit 448b83e288
11 changed files with 40 additions and 71 deletions
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6
hotspot/src/share/vm/opto/loopTransform.cpp
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@ -194,8 +194,7 @@ Node* IdealLoopTree::reassociate_add_sub(Node* n1, PhaseIdealLoop *phase) {
addx = new (phase->C, 3) AddINode(x, inv);
}
phase->register_new_node(addx, phase->get_ctrl(x));
phase->_igvn.hash_delete(n1);
phase->_igvn.subsume_node(n1, addx);
phase->_igvn.replace_node(n1, addx);
return addx;
}
@ -1586,8 +1585,7 @@ bool IdealLoopTree::policy_do_remove_empty_loop( PhaseIdealLoop *phase ) {
Node *phi = cl->phi();
Node *final = new (phase->C, 3) SubINode( cl->limit(), cl->stride() );
phase->register_new_node(final,cl->in(LoopNode::EntryControl));
phase->_igvn.hash_delete(phi);
phase->_igvn.subsume_node(phi,final);
phase->_igvn.replace_node(phi,final);
phase->C->set_major_progress();
return true;
}