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Anyway, based on IRC discussion with Richard Sandiford on IRC, we should probably test type uids instead of type pointers because type uids aren't reused, but type pointers in a very bad luck case could be, and having the static var at filescope and GTY((deletable)) is an overkill (and with costs during GC time). 2020-04-23 Jakub Jelinek <jakub@redhat.com> PR target/94707 * config/rs6000/rs6000-call.c (rs6000_discover_homogeneous_aggregate): Use TYPE_UID (TYPE_MAIN_VARIANT (type)) instead of type to check if the same type has been diagnosed most recently already.
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