mirror of
https://github.com/gcc-mirror/gcc.git
synced 2026-05-06 14:59:39 +02:00
348c623d7d
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. Signed-off-by: Prachi Godbole <pgodbole@nvidia.com> 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.