A gentle ping
> On 30 Oct 2025, at 10:45 AM, Prachi Godbole <[email protected]> wrote:
>
> This patch introduces a new heuristics for reordering functions, to be used
> in the absense of profile information. This approach uses C++ template
> instantiation types to group functions together. Entry functions are sorted
> in the beginning, and callees are sorted as part of partition_callchain ().
>
> Bootstrapped and tested on aarch64-none-linux-gnu.
> Ok for mainline?
>
> Thanks,
> Prachi
>
> Signed-off-by: Prachi Godbole <[email protected]>
>
> config/ChangeLog:
>
> * bootstrap-lto-locality-cpp-template.mk: New file.
>
> gcc/ChangeLog:
>
> * flag-types.h (enum lto_locality_heuristics): New enum.
> * ipa-locality-cloning.cc (struct templ_info): New struct.
> (struct locality_info): Add templ_info field.
> (templ_hash_map): New hash_map.
> (callee_templ_cmp): Ditto.
> (static_profile_templ_cmp): Ditto.
> (sort_templ_hashes_cmp): Ditto.
> (order_templ_hashes): Ditto.
> (locality_dc_template_p): Ditto.
> (populate_templ_info): Ditto.
> (create_locality_info): Call populate_templ_info.
> (partition_callchain): Call callee_templ_cmp.
> (locality_determine_static_order): Populate and sort templ_hash_map.
> (locality_partition_and_clone): Handle lto_locality_heuristics.
> (lc_execute): Initialize templ_hash_map.
> * params.opt: New param.
>
> <0003-PATCH-3-3-ipa-reorder-for-locality-Introduce-C-templ.patch>
