[Bug target/95254] aarch64: gcc generate inefficient code with fixed sve vector length

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95254

--- Comment #1 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by hongtao Liu <liuhongt@gcc.gnu.org>:

https://gcc.gnu.org/g:43088bb4dadd3d14b6b594c5f9363fe879f3d7f7

commit r11-928-g43088bb4dadd3d14b6b594c5f9363fe879f3d7f7
Author: liuhongt <hongtao.liu@intel.com>
Date:   Fri May 29 13:38:49 2020 +0800

    Fix zero-masking for vcvtps2ph when dest operand is memory.

    When dest is memory, zero-masking is not valid, only merging-masking is
available,

    2020-06-24  Hongtao Liu  <hongtao.liu@inte.com>

    gcc/ChangeLog:
            PR target/95254
            * config/i386/sse.md (*vcvtps2ph_store<merge_mask_name>):
            Refine from *vcvtps2ph_store<mask_name>.
            (vcvtps2ph256<mask_name>): Refine constraint from vm to v.
            (<mask_codefor>avx512f_vcvtps2ph512<mask_name>): Ditto.
            (*vcvtps2ph256<merge_mask_name>): New define_insn.
            (*avx512f_vcvtps2ph512<merge_mask_name>): Ditto.
            * config/i386/subst.md (merge_mask): New define_subst.
            (merge_mask_name): New define_subst_attr.
            (merge_mask_operand3): Ditto.

    gcc/testsuite/ChangeLog:
            * gcc.target/i386/avx512f-vcvtps2ph-pr95254.c: New test.
            * gcc.target/i386/avx512vl-vcvtps2ph-pr95254.c: Ditto.