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From: "dcb314 at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/107435] New: ice in build_vector_from_val, at tree.cc:2125
Date: Thu, 27 Oct 2022 15:00:33 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107435

            Bug ID: 107435
           Summary: ice in build_vector_from_val, at tree.cc:2125
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dcb314 at hotmail dot com
  Target Milestone: ---

Created attachment 53780
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D53780&action=3Dedit
C source code

For the attached code, compiled with=20

-std=3Dgnu89 -O3 -march=3Dznver3 -c bug858.c

recent gcc does this:

during GIMPLE pass: vect
src/io/trove/trove-dbpf/dbpf-open-cache.c: In function
=E2=80=98dbpf_open_cache_initiali
ze=E2=80=99:
src/io/trove/trove-dbpf/dbpf-open-cache.c:100:6: internal compiler error: in
bui
ld_vector_from_val, at tree.cc:2125
0x1072d8e build_vector_from_val(tree_node*, tree_node*)
        ../../trunk.git/gcc/tree.cc:2124
0x100a927 vectorizable_recurr(_loop_vec_info*, _stmt_vec_info*, gimple**,
_slp_t
ree*, vec<stmt_info_for_cost, va_heap, vl_ptr>*)
        ../../trunk.git/gcc/tree-vect-loop.cc:8472

The bug first seems to occur sometime between git hash baeec7cc83b19b46
and 3bd5d9a28e1ce4d1, a day later.

I have a reduction running.=