86cd0334f3
2017-03-01 Martin Jambor <mjambor@suse.cz> PR lto/78140 * ipa-prop.h (ipa_bits): Removed field known. (ipa_jump_func): Removed field vr_known. Changed fields bits and m_vr to pointers. Adjusted their comments to warn about their sharing. (ipcp_transformation_summary): Change bits to a vector of pointers. (ipa_check_create_edge_args): Moved to ipa-prop.c, declare. (ipa_get_ipa_bits_for_value): Declare. * tree-vrp.h (value_range): Mark as GTY((for_user)). * ipa-prop.c (ipa_bit_ggc_hash_traits): New. (ipa_bits_hash_table): Likewise. (ipa_vr_ggc_hash_traits): Likewise. (ipa_vr_hash_table): Likewise. (ipa_print_node_jump_functions_for_edge): Adjust for bits and m_vr being pointers and vr_known being removed. (ipa_set_jf_unknown): Likewise. (ipa_get_ipa_bits_for_value): New function. (ipa_set_jfunc_bits): Likewise. (ipa_get_value_range): New overloaded functions. (ipa_set_jfunc_vr): Likewise. (ipa_compute_jump_functions_for_edge): Use the above functions to construct bits and vr parts of jump functions. (ipa_check_create_edge_args): Move here from ipa-prop.h, also allocate ipa_bits_hash_table and ipa_vr_hash_table if they do not already exist. (ipcp_grow_transformations_if_necessary): Also allocate ipa_bits_hash_table and ipa_vr_hash_table if they do not already exist. (ipa_node_params_t::duplicate): Do not copy bits, just pointers to them. Fix too long lines. (ipa_write_jump_function): Adjust for bits and m_vr being pointers and vr_known being removed. (ipa_read_jump_function): Use new setter functions to construct bits and vr parts of jump functions or set them to NULL. (write_ipcp_transformation_info): Adjust for bits being pointers. (read_ipcp_transformation_info): Likewise. (ipcp_update_bits): Likewise. Fix excessively long lines a trailing space. Include gt-ipa-prop.h. * ipa-cp.c (propagate_bits_across_jump_function): Adjust for bits being pointers. (ipcp_store_bits_results): Likewise. (propagate_vr_across_jump_function): Adjust for m_vr being a pointer. Do not write to existing jump functions but use a temporary instead. From-SVN: r245805
60 lines
2.0 KiB
C
60 lines
2.0 KiB
C
/* Support routines for Value Range Propagation (VRP).
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Copyright (C) 2016-2017 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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/* Type of value ranges. See value_range_d In tree-vrp.c for a
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description of these types. */
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enum value_range_type { VR_UNDEFINED, VR_RANGE,
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VR_ANTI_RANGE, VR_VARYING, VR_LAST };
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/* Range of values that can be associated with an SSA_NAME after VRP
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has executed. */
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struct GTY((for_user)) value_range
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{
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/* Lattice value represented by this range. */
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enum value_range_type type;
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/* Minimum and maximum values represented by this range. These
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values should be interpreted as follows:
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- If TYPE is VR_UNDEFINED or VR_VARYING then MIN and MAX must
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be NULL.
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- If TYPE == VR_RANGE then MIN holds the minimum value and
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MAX holds the maximum value of the range [MIN, MAX].
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- If TYPE == ANTI_RANGE the variable is known to NOT
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take any values in the range [MIN, MAX]. */
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tree min;
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tree max;
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/* Set of SSA names whose value ranges are equivalent to this one.
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This set is only valid when TYPE is VR_RANGE or VR_ANTI_RANGE. */
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bitmap equiv;
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};
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extern void vrp_intersect_ranges (value_range *vr0, value_range *vr1);
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extern void vrp_meet (value_range *vr0, const value_range *vr1);
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extern void dump_value_range (FILE *, const value_range *);
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extern void extract_range_from_unary_expr (value_range *vr,
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enum tree_code code,
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tree type,
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value_range *vr0_,
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tree op0_type);
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