[Bug target/99037] Invalid representation of vector zero in aarch64-simd.md

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99037

--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-9 branch has been updated by Kyrylo Tkachov
<ktkachov@gcc.gnu.org>:

https://gcc.gnu.org/g:3a9504e1f03bc2980062dc62261212e8635bcf93

commit r9-9519-g3a9504e1f03bc2980062dc62261212e8635bcf93
Author: Kyrylo Tkachov <kyrylo.tkachov@arm.com>
Date:   Fri May 7 11:35:29 2021 +0100

    aarch64: PR target/99037 Fix RTL represntation in move_lo_quad patterns

    This patch fixes the RTL representation of the move_lo_quad patterns to use
aarch64_simd_or_scalar_imm_zero
    for the zero part rather than a vec_duplicate of zero or a const_int 0.
    The expander that generates them is also adjusted so that we use and match
the correct const_vector forms throughout.

    Co-Authored-By: Jakub Jelinek <jakub@redhat.com>
    gcc/ChangeLog:

            PR target/99037
            PR target/100441
            * config/aarch64/aarch64-simd.md (move_lo_quad_internal_<mode>):
Use
            aarch64_simd_or_scalar_imm_zero to match zeroes.  Remove pattern
            matching const_int 0.
            (move_lo_quad_internal_be_<mode>): Likewise.
            (move_lo_quad_<mode>): Update for the above.
            * config/aarch64/iterators.md (VQ_2E): Delete.

    gcc/testsuite/ChangeLog:

            PR target/99808
            * gcc.target/aarch64/pr99808.c: New test.