[Bug middle-end/115597] [15 Regression] vectorizer takes 20+ h compiling 510.parest in SPECCPU2017 since g:46bb4ce4d30ab749d40f6f4cef6f1fb7c7813452

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115597

--- 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:2a345214fc332b6f0821edf394ff8802b768db1d

commit r15-1565-g2a345214fc332b6f0821edf394ff8802b768db1d
Author: Richard Biener <rguent...@suse.de>
Date:   Sun Jun 23 11:26:39 2024 +0200

    tree-optimization/115597 - allow CSE of two-operator VEC_PERM nodes

    The following makes sure to always CSE when there's SLP_TREE_SCALAR_STMTS
    as otherwise a chain of two-operator node operations can result in
    exponential behavior of the CSE process as likely seen when building
    510.parest on aarch64.

            PR tree-optimization/115597
            * tree-vect-slp.cc (vect_cse_slp_nodes): Allow to CSE
            VEC_PERM nodes.