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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/111648] [14 Regression] Wrong code at -O2/3
 on x86_64-linux-gnu since r14-3243-ga7dba4a1c05
Date: Wed, 18 Oct 2023 19:04:02 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D111648

--- Comment #5 from CVS 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:3ec8ecb8e92faec889bc6f7aeac9ff59e82b4f7f

commit r14-4726-g3ec8ecb8e92faec889bc6f7aeac9ff59e82b4f7f
Author: Prathamesh Kulkarni <prathamesh.kulkarni@linaro.org>
Date:   Thu Oct 19 00:29:38 2023 +0530

    PR111648: Fix wrong code-gen due to incorrect VEC_PERM_EXPR folding.

    gcc/ChangeLog:
            PR tree-optimization/111648
            * fold-const.cc (valid_mask_for_fold_vec_perm_cst_p): If a1
            chooses base element from arg, ensure that it's a natural stepp=
ed
            sequence.
            (build_vec_cst_rand): New param natural_stepped and use it to
            construct a naturally stepped sequence.
            (test_nunits_min_2): Add new unit tests Case 6 and Case 7.=