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7092905: C2: Keep track of the number of dead nodes

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Keep an (almost) accurate running count of the reachable (live) flow graph nodes.

Reviewed-by: kvn, twisti, jrose, vlivanov
This commit is contained in:
Bharadwaj Yadavalli 2012-11-27 17:24:15 -08:00
parent 96562be9e5
commit 2d2532e740
28 changed files with 306 additions and 120 deletions
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4
hotspot/src/share/vm/opto/macro.cpp
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@ -2262,7 +2262,7 @@ void PhaseMacroExpand::expand_lock_node(LockNode *lock) {
Node *slow_ctrl = _fallthroughproj->clone();
transform_later(slow_ctrl);
_igvn.hash_delete(_fallthroughproj);
_fallthroughproj->disconnect_inputs(NULL);
_fallthroughproj->disconnect_inputs(NULL, C);
region->init_req(1, slow_ctrl);
// region inputs are now complete
transform_later(region);
@ -2327,7 +2327,7 @@ void PhaseMacroExpand::expand_unlock_node(UnlockNode *unlock) {
Node *slow_ctrl = _fallthroughproj->clone();
transform_later(slow_ctrl);
_igvn.hash_delete(_fallthroughproj);
_fallthroughproj->disconnect_inputs(NULL);
_fallthroughproj->disconnect_inputs(NULL, C);
region->init_req(1, slow_ctrl);
// region inputs are now complete
transform_later(region);