Hi all,

This patch adds -mcpu/-mtune support for the Arm Neoverse V2 core.
This updates the internal references to "demeter", but leaves "demeter" as an
accepted value to -mcpu/-mtune as it appears in the released GCC 12 series.

Bootstrapped and tested on aarch64-none-linux-gnu.
Pushing to trunk.
Thanks,
Kyrill

gcc/ChangeLog:

        * config/aarch64/aarch64-cores.def (neoverse-v2): New entry.
        (demeter): Update tunings to neoversev2.
        * config/aarch64/aarch64-tune.md: Regenerate.
        * config/aarch64/aarch64.cc (demeter_addrcost_table): Rename to
        neoversev2_addrcost_table.
        (demeter_regmove_cost): Rename to neoversev2_addrcost_table.
        (demeter_advsimd_vector_cost): Rename to neoversev2_advsimd_vector_cost.
        (demeter_sve_vector_cost): Rename to neoversev2_sve_vector_cost.
        (demeter_scalar_issue_info): Rename to neoversev2_scalar_issue_info.
        (demeter_advsimd_issue_info): Rename to neoversev2_advsimd_issue_info.
        (demeter_sve_issue_info): Rename to neoversev2_sve_issue_info.
        (demeter_vec_issue_info): Rename to neoversev2_vec_issue_info.
        Update references to above.
        (demeter_vector_cost): Rename to neoversev2_vector_cost.
        (demeter_tunings): Rename to neoversev2_tunings.
        (aarch64_vec_op_count::rename_cycles_per_iter): Use
        neoversev2_sve_issue_info instead of demeter_sve_issue_info.
        * doc/invoke.texi (AArch64 Options): Document neoverse-v2.

Attachment: v2.patch
Description: v2.patch

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