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comparison src/share/vm/opto/memnode.cpp @ 82:de93acbb64fc

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6682236: C2 hits ideal nodes limit during IGVN optimization with EA Summary: missing check in LoadNode::Ideal() causes infinite generation of a value Phi. Reviewed-by: jrose, never
author kvn
date Mon, 31 Mar 2008 18:37:36 -0700
parents 2a9af0b9cb1c
children f3b3fe64f59f ba764ed4b6f2
comparison
equal deleted inserted replaced
81:dee7a3f3dc9d 82:de93acbb64fc
1120 } 1120 }
1121 } 1121 }
1122 } 1122 }
1123 // Split through Phi (see original code in loopopts.cpp). 1123 // Split through Phi (see original code in loopopts.cpp).
1124 assert(phase->C->have_alias_type(addr_t), "instance should have alias type"); 1124 assert(phase->C->have_alias_type(addr_t), "instance should have alias type");
1125
1126 // Do nothing here if Identity will find a value
1127 // (to avoid infinite chain of value phis generation).
1128 if ( !phase->eqv(this, this->Identity(phase)) )
1129 return NULL;
1130
1125 const Type* this_type = this->bottom_type(); 1131 const Type* this_type = this->bottom_type();
1126 int this_index = phase->C->get_alias_index(addr_t); 1132 int this_index = phase->C->get_alias_index(addr_t);
1127 int this_offset = addr_t->offset(); 1133 int this_offset = addr_t->offset();
1128 int this_iid = addr_t->is_oopptr()->instance_id(); 1134 int this_iid = addr_t->is_oopptr()->instance_id();
1129 int wins = 0; 1135 int wins = 0;