c6b0d21d49
2017-02-17 Martin Liska <mliska@suse.cz> PR tree-optimization/79529 * tree-ssa-loop-unswitch.c (is_maybe_undefined): Use ssa_defined_default_def_p to handle cases which are implicitly defined. * tree-ssa.c (ssa_defined_default_def_p): New function. (ssa_undefined_value_p): Use ssa_defined_default_def_p to handle cases which are implicitly defined. * tree-ssa.h (ssa_defined_default_def_p): Declare. From-SVN: r245530
93 lines
2.9 KiB
C
93 lines
2.9 KiB
C
/* Header file for any pass which requires SSA routines.
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Copyright (C) 2013-2017 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 it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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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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#ifndef GCC_TREE_SSA_H
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#define GCC_TREE_SSA_H
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/* Mapping for redirected edges. */
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struct edge_var_map {
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tree result; /* PHI result. */
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tree def; /* PHI arg definition. */
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source_location locus; /* PHI arg location. */
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};
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/* A vector of var maps. */
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typedef vec<edge_var_map, va_heap, vl_embed> edge_var_map_vector;
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extern void redirect_edge_var_map_add (edge, tree, tree, source_location);
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extern void redirect_edge_var_map_clear (edge);
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extern void redirect_edge_var_map_dup (edge, edge);
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extern vec<edge_var_map> *redirect_edge_var_map_vector (edge);
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extern void redirect_edge_var_map_empty (void);
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extern edge ssa_redirect_edge (edge, basic_block);
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extern void flush_pending_stmts (edge);
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extern void gimple_replace_ssa_lhs (gimple *, tree);
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extern tree target_for_debug_bind (tree);
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extern void insert_debug_temp_for_var_def (gimple_stmt_iterator *, tree);
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extern void insert_debug_temps_for_defs (gimple_stmt_iterator *);
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extern void reset_debug_uses (gimple *);
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extern void release_defs_bitset (bitmap toremove);
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extern void verify_ssa (bool, bool);
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extern void init_tree_ssa (function *);
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extern void delete_tree_ssa (function *);
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extern bool tree_ssa_useless_type_conversion (tree);
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extern tree tree_ssa_strip_useless_type_conversions (tree);
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extern bool ssa_defined_default_def_p (tree t);
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extern bool ssa_undefined_value_p (tree, bool = true);
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extern bool gimple_uses_undefined_value_p (gimple *);
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extern void execute_update_addresses_taken (void);
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/* Given an edge_var_map V, return the PHI arg definition. */
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static inline tree
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redirect_edge_var_map_def (edge_var_map *v)
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{
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return v->def;
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}
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/* Given an edge_var_map V, return the PHI result. */
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static inline tree
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redirect_edge_var_map_result (edge_var_map *v)
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{
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return v->result;
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}
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/* Given an edge_var_map V, return the PHI arg location. */
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static inline source_location
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redirect_edge_var_map_location (edge_var_map *v)
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{
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return v->locus;
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}
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/* Verify SSA invariants, if internal consistency checks are enabled. */
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static inline void
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checking_verify_ssa (bool check_modified_stmt, bool check_ssa_operands)
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{
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if (flag_checking)
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verify_ssa (check_modified_stmt, check_ssa_operands);
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}
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#endif /* GCC_TREE_SSA_H */
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