[Bug tree-optimization/121202] [15/16 Regression] ICE on valid code at -O3 with -fno-tree-copy-prop on x86_64-linux-gnu: in vect_schedule_slp_node, at tree-vect-slp.cc:11381

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121202

--- Comment #5 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Richard Biener <rgue...@gcc.gnu.org>:

https://gcc.gnu.org/g:bdfb5cc5aa6959a6959fc0cf98da08db89c81032

commit r16-2422-gbdfb5cc5aa6959a6959fc0cf98da08db89c81032
Author: Richard Biener <rguent...@suse.de>
Date:   Tue Jul 22 13:02:03 2025 +0200

    tree-optimization/121202 - fix vector stmt placement

    When we have a vector shift with a scalar the shift operand can be
    external - in that case we should not use the shift operand def
    as hint where to place the vector shift instruction.  The ICE
    in the PR is because stmt dominance queries only work inside of
    the vector region.  But we should also never place stmts outside
    of it.

            PR tree-optimization/121202
            * tree-vect-slp.cc (vect_schedule_slp_node): Do not take
            an out-of-region stmt as "last".

            * gcc.dg/pr121202.c: New testcase.