https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98228
Marius Hillenbrand <mhillen at linux dot ibm.com> changed:
What |Removed |Added
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CC| |mhillen at linux dot ibm.com
--- Comment #6 from Marius Hillenbrand <mhillen at linux dot ibm.com> ---
I reproduced and bisected with the config shared by Matthias. The issue begins
with the introduction of ipa-modref. There is an inbetween range of commits
that fail with a different symptom, yet this commit is the first I found that
exactly fails as initially reported here:
commit d119f34c952f8718fdbabc63e2f369a16e92fa07
Author: Jan Hubicka <j...@suse.cz>
Date: Sun Sep 20 07:25:16 2020 +0200
New modref/ipa_modref optimization passes
2020-09-19 David Cepelik <d...@dcepelik.cz>
Jan Hubicka <hubi...@ucw.cz>
* Makefile.in: Add ipa-modref.c and ipa-modref-tree.c.
* alias.c: (reference_alias_ptr_type_1): Export.
* alias.h (reference_alias_ptr_type_1): Declare.
* common.opt (fipa-modref): New.
* gengtype.c (open_base_files): Add ipa-modref-tree.h and
ipa-modref.h
* ipa-modref-tree.c: New file.
* ipa-modref-tree.h: New file.
* ipa-modref.c: New file.
* ipa-modref.h: New file.
* lto-section-in.c (lto_section_name): Add ipa_modref.
* lto-streamer.h (enum lto_section_type): Add
LTO_section_ipa_modref.
* opts.c (default_options_table): Enable ipa-modref at -O1+.
* params.opt (-param=modref-max-bases, -param=modref-max-refs,
-param=modref-max-tests): New params.
* passes.def: Schedule pass_modref and pass_ipa_modref.
* timevar.def (TV_IPA_MODREF): New timevar.
(TV_TREE_MODREF): New timevar.
* tree-pass.h (make_pass_modref): Declare.
(make_pass_ipa_modref): Declare.
* tree-ssa-alias.c (dump_alias_stats): Include ipa-modref-tree.h
and ipa-modref.h
(alias_stats): Add modref_use_may_alias, modref_use_no_alias,
modref_clobber_may_alias, modref_clobber_no_alias, modref_tests.
(dump_alias_stats): Dump new stats.
(nonoverlapping_array_refs_p): Fix formating.
(modref_may_conflict): New function.
(ref_maybe_used_by_call_p_1): Use it.
(call_may_clobber_ref_p_1): Use it.
(call_may_clobber_ref_p): Update.
(stmt_may_clobber_ref_p_1): Update.
* tree-ssa-alias.h (call_may_clobber_ref_p_1): Update.
