171420fdc9
The following patch removes ipa_bits struct pointer/vector from ipa jump functions and ipa cp transformations. The reason is because the struct uses widest_int to represent mask/value pair, which in the RFC patches to allow larger precisions for wide_int/widest_int is GC unfriendly because those types become non-trivially default constructible/copyable/destructible. One option would be to use trailing_wide_int for that instead, but as pointed out by Aldy, irange_storage which we already use under the hood for ipa_vr when type of parameter is integral or pointer already stores the mask/value pair because VRP now does the bit cp as well. So, this patch just uses m_vr to store both the value range and the bitmask. There is still separate propagation of the ipcp_bits_lattice from propagation of the ipcp_vr_lattice, but when storing we merge the two into the same container. 2023-10-06 Jakub Jelinek <jakub@redhat.com> * ipa-prop.h (ipa_bits): Remove. (struct ipa_jump_func): Remove bits member. (struct ipcp_transformation): Remove bits member, adjust ctor and dtor. (ipa_get_ipa_bits_for_value): Remove. * ipa-prop.cc (struct ipa_bit_ggc_hash_traits): Remove. (ipa_bits_hash_table): Remove. (ipa_print_node_jump_functions_for_edge): Don't print bits. (ipa_get_ipa_bits_for_value): Remove. (ipa_set_jfunc_bits): Remove. (ipa_compute_jump_functions_for_edge): For pointers query pointer alignment before ipa_set_jfunc_vr and update_bitmask in there. For integral types, just rely on bitmask already being handled in value ranges. (ipa_check_create_edge_args): Don't create ipa_bits_hash_table. (ipcp_transformation_initialize): Neither here. (ipcp_transformation_t::duplicate): Don't copy bits vector. (ipa_write_jump_function): Don't stream bits here. (ipa_read_jump_function): Neither here. (useful_ipcp_transformation_info_p): Don't test bits vec. (write_ipcp_transformation_info): Don't stream bits here. (read_ipcp_transformation_info): Neither here. (ipcp_get_parm_bits): Get mask and value from m_vr rather than bits. (ipcp_update_bits): Remove. (ipcp_update_vr): For pointers, set_ptr_info_alignment from bitmask stored in value range. (ipcp_transform_function): Don't test bits vector, don't call ipcp_update_bits. * ipa-cp.cc (propagate_bits_across_jump_function): Don't use jfunc->bits, instead get mask and value from jfunc->m_vr. (ipcp_store_bits_results): Remove. (ipcp_store_vr_results): Incorporate parts of ipcp_store_bits_results here, merge the bitmasks with value range if both are supplied. (ipcp_driver): Don't call ipcp_store_bits_results. * ipa-sra.cc (zap_useless_ipcp_results): Remove *ts->bits clearing. |
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