[Bug middle-end/111754] [14 Regression] ICE: in decompose, at rtl.h:2313 at -O

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111754

--- Comment #12 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Prathamesh Kulkarni
<prathamesh3492@gcc.gnu.org>:

https://gcc.gnu.org/g:2065438db4ac13af7e0de2f934959413647f74a7

commit r14-5890-g2065438db4ac13af7e0de2f934959413647f74a7
Author: Prathamesh Kulkarni <prathamesh.kulkarni@linaro.org>
Date:   Mon Nov 27 22:40:49 2023 +0530

    PR111754: Rework encoding of result for VEC_PERM_EXPR with constant input
vectors.

    gcc/ChangeLog:
            PR middle-end/111754
            * fold-const.cc (fold_vec_perm_cst): Set result's encoding to sel's
            encoding, and set res_nelts_per_pattern to 2 if sel contains
stepped
            sequence but input vectors do not.
            (test_nunits_min_2): New test Case 8.
            (test_nunits_min_4): New tests Case 8 and Case 9.

    gcc/testsuite/ChangeLog:
            PR middle-end/111754
            * gcc.target/aarch64/sve/slp_3.c: Adjust code-gen.
            * gcc.target/aarch64/sve/slp_4.c: Likewise.
            * gcc.dg/vect/pr111754.c: New test.

    Co-authored-by: Richard Sandiford <richard.sandiford@arm.com>