[GCC 10] aarch64: Set AARCH64_EXTRA_TUNE_PREFER_ADVSIMD_AUTOVEC for Neoverse N2

[Kyrylo Tkachov via Gcc-patches]

Hi all,

This patch tweaks the Neoverse N2 tuning on the GCC 10 branch to have it in 
line with GCC 8 and 9 to prefer AdvancedSIMD over SVE for auto-vectorisation.

Bootstrapped and tested on aarch64-none-linux-gnu.
Pushing to the branch.

Thanks,
Kyrill

gcc/ChangeLog:

        * config/aarch64/aarch64.c (neoversen2_tunings): Set
        AARCH64_EXTRA_TUNE_PREFER_ADVSIMD_AUTOVEC tune_flags.

asimd-vec-n2-10.patch
Description: asimd-vec-n2-10.patch