[Bug target/110625] [AArch64] Vect: SLP fails to vectorize a loop as the reduction_latency calculated by new costs is too large

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110625

--- Comment #20 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Hao Liu <h...@gcc.gnu.org>:

https://gcc.gnu.org/g:4d8b5563179f3a7ca268b64f71731a4878635497

commit r14-2973-g4d8b5563179f3a7ca268b64f71731a4878635497
Author: Hao Liu <h...@os.amperecomputing.com>
Date:   Fri Aug 4 10:32:52 2023 +0800

    AArch64: Avoid the ICE on empty reduction definition in info_for_reduction
[PR110625]

    Fix the assertion failure on empty reduction define in info_for_reduction.
    Even a stmt is live, it may still have empty reduction define.  Check the
    reduction definition instead of live info before calling
info_for_reduction.

    gcc/ChangeLog:

            PR target/110625
            * config/aarch64/aarch64.cc (aarch64_force_single_cycle): check
            STMT_VINFO_REDUC_DEF to avoid failures in info_for_reduction.

    gcc/testsuite/ChangeLog:

            * gcc.target/aarch64/pr110625_3.c: New testcase.