stan/jdk-24
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John R Rose 2009-09-15 22:50:12 -07:00
commit 47c425506d
1 changed files with 5 additions and 2 deletions
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hotspot/src/share/vm/opto/escape.cpp
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@ -524,12 +524,15 @@ bool ConnectionGraph::split_AddP(Node *addp, Node *base, PhaseGVN *igvn) {
// inlining) which was not eliminated during parsing since the exactness
// of the allocation type was not propagated to the subclass type check.
//
// Or the type 't' could be not related to 'base_t' at all.
// It could happened when CHA type is different from MDO type on a dead path
// (for example, from instanceof check) which is not collapsed during parsing.
//
// Do nothing for such AddP node and don't process its users since
// this code branch will go away.
//
if (!t->is_known_instance() &&
!t->klass()->equals(base_t->klass()) &&
t->klass()->is_subtype_of(base_t->klass())) {
!base_t->klass()->is_subtype_of(t->klass())) {
return false; // bail out
}