[Bug tree-optimization/110248] ivopts could under-cost for some addressing modes on len_{load,store}

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110248

--- Comment #10 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Kewen Lin <li...@gcc.gnu.org>:

https://gcc.gnu.org/g:0412f0e374de1f66e20c407e0b519324af3fd5b6

commit r14-3094-g0412f0e374de1f66e20c407e0b519324af3fd5b6
Author: Kewen Lin <li...@linux.ibm.com>
Date:   Wed Aug 9 01:15:46 2023 -0500

    rs6000: Teach legitimate_address_p about LEN_{LOAD,STORE} [PR110248]

    This patch is to teach rs6000_legitimate_address_p to
    handle the queried rtx constructed for LEN_{LOAD,STORE},
    since lxvl and stxvl doesn't support x-form or ds-form,
    so consider it as not legitimate when outer code is PLUS.

            PR tree-optimization/110248

    gcc/ChangeLog:

            * config/rs6000/rs6000.cc (rs6000_legitimate_address_p): Check if
            the given code is for ifn LEN_{LOAD,STORE}, if yes then make it not
            legitimate when outer code is PLUS.