vm/opto/memnode.cpp

51 static Node *step_through_mergemem(PhaseGVN *phase, MergeMemNode *mmem,  const TypePtr *tp, const TypePtr *adr_check, outputStream *st);
219 static Node *step_through_mergemem(PhaseGVN *phase, MergeMemNode *mmem,  const TypePtr *tp, const TypePtr *adr_check, outputStream *st) {
226     bool consistent =  adr_check == NULL || adr_check->empty() ||
227                        phase->C->must_alias(adr_check, alias_idx );
229     if( !consistent && adr_check != NULL && !adr_check->empty() &&
231         adr_check->isa_aryptr() && adr_check->offset() != Type::OffsetBot &&
232         ( adr_check->offset() == arrayOopDesc::length_offset_in_bytes() ||
233           adr_check->offset() == oopDesc::klass_offset_in_bytes() ||
234           adr_check->offset() == oopDesc::mark_offset_in_bytes() ) ) {
239       st->print("alias_idx==%d, adr_check==", alias_idx);
240       if( adr_check == NULL ) {
243         adr_check->dump();
247       assert(consistent, "adr_check must match alias idx");