Mercurial > hg > graal-jvmci-8
diff src/share/vm/opto/loopUnswitch.cpp @ 6144:5e990493719e
7173340: C2: code cleanup: use PhaseIterGVN::replace_edge(Node*, int, Node*) where applicable
Summary: replace frequent C2 optimizer code patterns with new methods calls
Reviewed-by: kvn, twisti
Contributed-by: vladimir.x.ivanov@oracle.com
author | kvn |
---|---|
date | Tue, 12 Jun 2012 16:23:31 -0700 |
parents | c96c3eb1efae |
children | e626685e9f6c |
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--- a/src/share/vm/opto/loopUnswitch.cpp Tue Jun 12 14:31:44 2012 -0700 +++ b/src/share/vm/opto/loopUnswitch.cpp Tue Jun 12 16:23:31 2012 -0700 @@ -174,27 +174,21 @@ Node* use = worklist.pop(); Node* nuse = use->clone(); nuse->set_req(0, invar_proj); - _igvn.hash_delete(use); - use->set_req(1, nuse); - _igvn._worklist.push(use); + _igvn.replace_input_of(use, 1, nuse); register_new_node(nuse, invar_proj); // Same for the clone Node* use_clone = old_new[use->_idx]; - _igvn.hash_delete(use_clone); - use_clone->set_req(1, nuse); - _igvn._worklist.push(use_clone); + _igvn.replace_input_of(use_clone, 1, nuse); } } // Hardwire the control paths in the loops into if(true) and if(false) - _igvn.hash_delete(unswitch_iff); + _igvn.rehash_node_delayed(unswitch_iff); short_circuit_if(unswitch_iff, proj_true); - _igvn._worklist.push(unswitch_iff); IfNode* unswitch_iff_clone = old_new[unswitch_iff->_idx]->as_If(); - _igvn.hash_delete(unswitch_iff_clone); + _igvn.rehash_node_delayed(unswitch_iff_clone); short_circuit_if(unswitch_iff_clone, proj_false); - _igvn._worklist.push(unswitch_iff_clone); // Reoptimize loops loop->record_for_igvn(); @@ -224,8 +218,7 @@ LoopNode* head = loop->_head->as_Loop(); bool counted_loop = head->is_CountedLoop(); Node* entry = head->in(LoopNode::EntryControl); - _igvn.hash_delete(entry); - _igvn._worklist.push(entry); + _igvn.rehash_node_delayed(entry); IdealLoopTree* outer_loop = loop->_parent; Node *cont = _igvn.intcon(1); @@ -249,18 +242,14 @@ // Fast (true) control Node* iffast_pred = clone_loop_predicates(entry, iffast, !counted_loop); - _igvn.hash_delete(head); - head->set_req(LoopNode::EntryControl, iffast_pred); + _igvn.replace_input_of(head, LoopNode::EntryControl, iffast_pred); set_idom(head, iffast_pred, dom_depth(head)); - _igvn._worklist.push(head); // Slow (false) control Node* ifslow_pred = clone_loop_predicates(entry, ifslow, !counted_loop); LoopNode* slow_head = old_new[head->_idx]->as_Loop(); - _igvn.hash_delete(slow_head); - slow_head->set_req(LoopNode::EntryControl, ifslow_pred); + _igvn.replace_input_of(slow_head, LoopNode::EntryControl, ifslow_pred); set_idom(slow_head, ifslow_pred, dom_depth(slow_head)); - _igvn._worklist.push(slow_head); recompute_dom_depth();