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6682236: C2 hits ideal nodes limit during IGVN optimization with EA

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Missing check in LoadNode::Ideal() causes infinite generation of a value Phi.

Reviewed-by: jrose, never
This commit is contained in:
Vladimir Kozlov 2008-03-31 18:37:36 -07:00
parent 1a350ad182
commit 833746644c
1 changed files with 6 additions and 0 deletions
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6
hotspot/src/share/vm/opto/memnode.cpp
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@ -1122,6 +1122,12 @@ Node *LoadNode::Ideal(PhaseGVN *phase, bool can_reshape) {
}
// Split through Phi (see original code in loopopts.cpp).
assert(phase->C->have_alias_type(addr_t), "instance should have alias type");
// Do nothing here if Identity will find a value
// (to avoid infinite chain of value phis generation).
if ( !phase->eqv(this, this->Identity(phase)) )
return NULL;
const Type* this_type = this->bottom_type();
int this_index = phase->C->get_alias_index(addr_t);
int this_offset = addr_t->offset();