Hi, when adding support for static chain and return slot flags I forgot to update early exit condition in modref_merge_call_site_flags. This yields to wrong code as demonstrated by the Fortran testcase attached to PR (which I hope someone will help me to turn into testuite one).
Bootstrapped/regtested x86_64-linux, comitted. gcc/ChangeLog: 2021-12-19 Jan Hubicka <hubi...@ucw.cz> PR ipa/103766 * ipa-modref.c (modref_merge_call_site_flags): Fix early exit condition diff --git a/gcc/ipa-modref.c b/gcc/ipa-modref.c index d3590f0b62b..9c411a6297a 100644 --- a/gcc/ipa-modref.c +++ b/gcc/ipa-modref.c @@ -5019,9 +5019,15 @@ modref_merge_call_site_flags (escape_summary *sum, bool changed = false; bool ignore_stores = ignore_stores_p (caller, callee_ecf_flags); - /* If we have no useful info to propagate. */ - if ((!cur_summary || !cur_summary->arg_flags.length ()) - && (!cur_summary_lto || !cur_summary_lto->arg_flags.length ())) + /* Return early if we have no useful info to propagate. */ + if ((!cur_summary + || (!cur_summary->arg_flags.length () + && !cur_summary->static_chain_flags + && !cur_summary->retslot_flags)) + && (!cur_summary_lto + || (!cur_summary_lto->arg_flags.length () + && !cur_summary_lto->static_chain_flags + && !cur_summary_lto->retslot_flags))) return false; FOR_EACH_VEC_ELT (sum->esc, i, ee)