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7173340: C2: code cleanup: use PhaseIterGVN::replace_edge(Node*, int, Node*) where applicable

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Replace frequent C2 optimizer code patterns with new methods calls

Reviewed-by: kvn, twisti
This commit is contained in:
Vlaidmir Ivanov 2012-06-12 16:23:31 -07:00 • committed by Vladimir Kozlov
parent 529b370174
commit dd85e2f356
11 changed files with 92 additions and 180 deletions
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22
hotspot/src/share/vm/opto/macro.cpp
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@ -1447,9 +1447,8 @@ void PhaseMacroExpand::expand_allocate_common(
if (!always_slow && _memproj_fallthrough != NULL) {
for (DUIterator_Fast imax, i = _memproj_fallthrough->fast_outs(imax); i < imax; i++) {
Node *use = _memproj_fallthrough->fast_out(i);
_igvn.hash_delete(use);
_igvn.rehash_node_delayed(use);
imax -= replace_input(use, _memproj_fallthrough, result_phi_rawmem);
_igvn._worklist.push(use);
// back up iterator
--i;
}
@ -1463,9 +1462,8 @@ void PhaseMacroExpand::expand_allocate_common(
}
for (DUIterator_Fast imax, i = _memproj_catchall->fast_outs(imax); i < imax; i++) {
Node *use = _memproj_catchall->fast_out(i);
_igvn.hash_delete(use);
_igvn.rehash_node_delayed(use);
imax -= replace_input(use, _memproj_catchall, _memproj_fallthrough);
_igvn._worklist.push(use);
// back up iterator
--i;
}
@ -1481,9 +1479,8 @@ void PhaseMacroExpand::expand_allocate_common(
if (_ioproj_fallthrough != NULL) {
for (DUIterator_Fast imax, i = _ioproj_fallthrough->fast_outs(imax); i < imax; i++) {
Node *use = _ioproj_fallthrough->fast_out(i);
_igvn.hash_delete(use);
_igvn.rehash_node_delayed(use);
imax -= replace_input(use, _ioproj_fallthrough, result_phi_i_o);
_igvn._worklist.push(use);
// back up iterator
--i;
}
@ -1497,9 +1494,8 @@ void PhaseMacroExpand::expand_allocate_common(
}
for (DUIterator_Fast imax, i = _ioproj_catchall->fast_outs(imax); i < imax; i++) {
Node *use = _ioproj_catchall->fast_out(i);
_igvn.hash_delete(use);
_igvn.rehash_node_delayed(use);
imax -= replace_input(use, _ioproj_catchall, _ioproj_fallthrough);
_igvn._worklist.push(use);
// back up iterator
--i;
}
@ -1857,18 +1853,16 @@ void PhaseMacroExpand::mark_eliminated_box(Node* oldbox, Node* obj) {
if (alock->box_node() == oldbox && alock->obj_node()->eqv_uncast(obj)) {
// Replace Box and mark eliminated all related locks and unlocks.
alock->set_non_esc_obj();
_igvn.hash_delete(alock);
_igvn.rehash_node_delayed(alock);
alock->set_box_node(newbox);
_igvn._worklist.push(alock);
next_edge = false;
}
}
if (u->is_FastLock() && u->as_FastLock()->obj_node()->eqv_uncast(obj)) {
FastLockNode* flock = u->as_FastLock();
assert(flock->box_node() == oldbox, "sanity");
_igvn.hash_delete(flock);
_igvn.rehash_node_delayed(flock);
flock->set_box_node(newbox);
_igvn._worklist.push(flock);
next_edge = false;
}
@ -1886,9 +1880,7 @@ void PhaseMacroExpand::mark_eliminated_box(Node* oldbox, Node* obj) {
Node* box_node = sfn->monitor_box(jvms, idx);
if (box_node == oldbox && obj_node->eqv_uncast(obj)) {
int j = jvms->monitor_box_offset(idx);
_igvn.hash_delete(u);
u->set_req(j, newbox);
_igvn._worklist.push(u);
_igvn.replace_input_of(u, j, newbox);
next_edge = false;
}
}