[Bug tree-optimization/123820] [16 Regression] ICE during GIMPLE pass: slsr since r16-7003-gc01ad7a27af

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123820

--- Comment #3 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The trunk branch has been updated by Andrew Pinski <pinskia@gcc.gnu.org>:

https://gcc.gnu.org/g:d1b30abe52228923ba389173c02c0186d25be1ab

commit r16-7051-gd1b30abe52228923ba389173c02c0186d25be1ab
Author: Andrew Pinski <andrew.pinski@oss.qualcomm.com>
Date:   Sun Jan 25 22:23:51 2026 -0800

    slsr: Use the correct type to try to convert to for inserting on edge case
[PR123820]

    I had noticed there was code that will convert the stride
    to the correct type
    What I didn't realize was the type which it was trying to
    use was stride_type but for this case it should have been using
    the type of the lhs. This fixes that oversight. Note for pointers
    we still want to use stride_type like what is done right above.

    I don't have a testcase that does not use LTO though. I didn't figure
    out why this testcase needed LTO though.

    Bootstrapped and tested on x86_64-linux-gnu.

            PR tree-optimization/123820

    gcc/ChangeLog:

            * gimple-ssa-strength-reduction.cc (create_add_on_incoming_edge):
Use
            the correct type for the stride (lhs if non-pointer).

    gcc/testsuite/ChangeLog:

            * g++.dg/torture/pr123820-1.C: New test.

    Signed-off-by: Andrew Pinski <andrew.pinski@oss.qualcomm.com>