[Bug target/95969] Use of __builtin_aarch64_im_lane_boundsi in AArch64 arm_neon.h interferes with gimple optimisation

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95969

--- Comment #9 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The trunk branch has been updated by Andrew Pinski <pins...@gcc.gnu.org>:

https://gcc.gnu.org/g:03312cbd54f337dfb25be356a1d1abc9925c6c03

commit r12-3493-g03312cbd54f337dfb25be356a1d1abc9925c6c03
Author: Andrew Pinski <apin...@marvell.com>
Date:   Thu Sep 2 07:08:22 2021 +0000

    [aarch64] Fix target/95969: __builtin_aarch64_im_lane_boundsi interferes
with gimple

    This patch adds simple folding of __builtin_aarch64_im_lane_boundsi where
    we are not going to error out. It fixes the problem by the removal
    of the function from the IR.

    OK? Bootstrapped and tested on aarch64-linux-gnu with no regressions.

    gcc/ChangeLog:

            PR target/95969
            * config/aarch64/aarch64-builtins.c
(aarch64_fold_builtin_lane_check):
            New function.
            (aarch64_general_fold_builtin): Handle
AARCH64_SIMD_BUILTIN_LANE_CHECK.
            (aarch64_general_gimple_fold_builtin): Likewise.

    gcc/testsuite/ChangeLog:

            PR target/95969
            * gcc.target/aarch64/lane-bound-1.c: New test.
            * gcc.target/aarch64/lane-bound-2.c: New test.