| /* Tree inlining hooks and declarations. |
| Copyright (C) 2001-2021 Free Software Foundation, Inc. |
| Contributed by Alexandre Oliva <aoliva@redhat.com> |
| |
| This file is part of GCC. |
| |
| GCC is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3, or (at your option) |
| any later version. |
| |
| GCC is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GCC; see the file COPYING3. If not see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef GCC_TREE_INLINE_H |
| #define GCC_TREE_INLINE_H |
| |
| |
| struct cgraph_edge; |
| |
| /* Indicate the desired behavior wrt call graph edges. We can either |
| duplicate the edge (inlining, cloning), move the edge (versioning, |
| parallelization), or move the edges of the clones (saving). */ |
| |
| enum copy_body_cge_which |
| { |
| CB_CGE_DUPLICATE, |
| CB_CGE_MOVE, |
| CB_CGE_MOVE_CLONES |
| }; |
| |
| typedef int_hash <unsigned short, 0> dependence_hash; |
| |
| /* Data required for function body duplication. */ |
| |
| struct copy_body_data |
| { |
| /* FUNCTION_DECL for function being inlined, or in general the |
| source function providing the original trees. */ |
| tree src_fn; |
| |
| /* FUNCTION_DECL for function being inlined into, or in general |
| the destination function receiving the new trees. */ |
| tree dst_fn; |
| |
| /* Callgraph node of the source function. */ |
| struct cgraph_node *src_node; |
| |
| /* Callgraph node of the destination function. */ |
| struct cgraph_node *dst_node; |
| |
| /* struct function for function being inlined. Usually this is the same |
| as DECL_STRUCT_FUNCTION (src_fn), but can be different if saved_cfg |
| and saved_eh are in use. */ |
| struct function *src_cfun; |
| |
| /* The VAR_DECL for the return value. */ |
| tree retvar; |
| |
| /* The map from local declarations in the inlined function to |
| equivalents in the function into which it is being inlined. */ |
| hash_map<tree, tree> *decl_map; |
| |
| /* Create a new decl to replace DECL in the destination function. */ |
| tree (*copy_decl) (tree, struct copy_body_data *); |
| |
| /* Current BLOCK. */ |
| tree block; |
| |
| /* GIMPLE_CALL if va arg parameter packs should be expanded or NULL |
| is not. */ |
| gcall *call_stmt; |
| |
| /* > 0 if we are remapping a type currently. */ |
| int remapping_type_depth; |
| |
| /* Exception landing pad the inlined call lies in. */ |
| int eh_lp_nr; |
| |
| /* Maps region and landing pad structures from the function being copied |
| to duplicates created within the function we inline into. */ |
| hash_map<void *, void *> *eh_map; |
| |
| /* We use the same mechanism do all sorts of different things. Rather |
| than enumerating the different cases, we categorize the behavior |
| in the various situations. */ |
| |
| /* What to do with call graph edges. */ |
| enum copy_body_cge_which transform_call_graph_edges; |
| |
| /* True if a new CFG should be created. False for inlining, true for |
| everything else. */ |
| bool transform_new_cfg; |
| |
| /* True if RETURN_EXPRs should be transformed to just the contained |
| MODIFY_EXPR. The branch semantics of the return will be handled |
| by manipulating the CFG rather than a statement. */ |
| bool transform_return_to_modify; |
| |
| /* True if the parameters of the source function are transformed. |
| Only true for inlining. */ |
| bool transform_parameter; |
| |
| /* True if this statement will need to be regimplified. */ |
| bool regimplify; |
| |
| /* True if trees may not be unshared. */ |
| bool do_not_unshare; |
| |
| /* True if trees should not be folded during the copying. */ |
| bool do_not_fold; |
| |
| /* True if new declarations may not be created during type remapping. */ |
| bool prevent_decl_creation_for_types; |
| |
| /* True if the location information will need to be reset. */ |
| bool reset_location; |
| |
| /* Replace error_mark_node as upper bound of array types with |
| an uninitialized VAR_DECL temporary. */ |
| bool adjust_array_error_bounds; |
| |
| /* Usually copy_decl callback always creates new decls, in that case |
| we want to remap all variably_modified_type_p types. If this flag |
| is set, remap_type will do further checks to see if remap_decl |
| of any decls mentioned in the type will remap to anything but itself |
| and only in that case will actually remap the type. */ |
| bool dont_remap_vla_if_no_change; |
| |
| /* A function to be called when duplicating BLOCK nodes. */ |
| void (*transform_lang_insert_block) (tree); |
| |
| /* Statements that might be possibly folded. */ |
| hash_set<gimple *> *statements_to_fold; |
| |
| /* Entry basic block to currently copied body. */ |
| basic_block entry_bb; |
| |
| /* For partial function versioning, bitmap of bbs to be copied, |
| otherwise NULL. */ |
| bitmap blocks_to_copy; |
| |
| /* Debug statements that need processing. */ |
| vec<gdebug *> debug_stmts; |
| |
| /* A map from local declarations in the inlined function to |
| equivalents in the function into which it is being inlined, where |
| the originals have been mapped to a value rather than to a |
| variable. */ |
| hash_map<tree, tree> *debug_map; |
| |
| /* A map from the inlined functions dependence info cliques to |
| equivalents in the function into which it is being inlined. */ |
| hash_map<dependence_hash, unsigned short> *dependence_map; |
| |
| /* A list of addressable local variables remapped into the caller |
| when inlining a call within an OpenMP SIMD-on-SIMT loop. */ |
| vec<tree> *dst_simt_vars; |
| |
| /* Basic block to which clobbers for local variables from the inline |
| function that need to live in memory should be added. */ |
| basic_block eh_landing_pad_dest; |
| |
| /* If clobbers for local variables from the inline function |
| that need to live in memory should be added to EH landing pads |
| outside of the inlined function, this should be the number |
| of basic blocks in the caller before inlining. Zero otherwise. */ |
| int add_clobbers_to_eh_landing_pads; |
| |
| /* Class managing changes to function parameters and return value planned |
| during IPA stage. */ |
| class ipa_param_body_adjustments *param_body_adjs; |
| |
| /* Hash set of SSA names that have been killed during call graph edge |
| redirection and should not be introduced into debug statements or NULL if no |
| SSA_NAME was deleted during redirections happened. */ |
| hash_set <tree> *killed_new_ssa_names; |
| }; |
| |
| /* Weights of constructions for estimate_num_insns. */ |
| |
| struct eni_weights |
| { |
| /* Cost per call. */ |
| unsigned call_cost; |
| |
| /* Cost per indirect call. */ |
| unsigned indirect_call_cost; |
| |
| /* Cost per call to a target specific builtin */ |
| unsigned target_builtin_call_cost; |
| |
| /* Cost of "expensive" div and mod operations. */ |
| unsigned div_mod_cost; |
| |
| /* Cost for omp construct. */ |
| unsigned omp_cost; |
| |
| /* Cost for tm transaction. */ |
| unsigned tm_cost; |
| |
| /* Cost of return. */ |
| unsigned return_cost; |
| |
| /* True when time of statement should be estimated. Thus, the |
| cost of a switch statement is logarithmic rather than linear in number |
| of cases. */ |
| bool time_based; |
| }; |
| |
| /* Weights that estimate_num_insns uses for heuristics in inlining. */ |
| |
| extern eni_weights eni_inlining_weights; |
| |
| /* Weights that estimate_num_insns uses to estimate the size of the |
| produced code. */ |
| |
| extern eni_weights eni_size_weights; |
| |
| /* Weights that estimate_num_insns uses to estimate the time necessary |
| to execute the produced code. */ |
| |
| extern eni_weights eni_time_weights; |
| |
| /* Function prototypes. */ |
| void init_inline_once (void); |
| extern tree copy_tree_body_r (tree *, int *, void *); |
| extern void insert_decl_map (copy_body_data *, tree, tree); |
| unsigned int optimize_inline_calls (tree); |
| tree maybe_inline_call_in_expr (tree); |
| bool tree_inlinable_function_p (tree); |
| tree copy_tree_r (tree *, int *, void *); |
| tree copy_decl_no_change (tree decl, copy_body_data *id); |
| int estimate_move_cost (tree type, bool); |
| int estimate_num_insns (gimple *, eni_weights *); |
| int estimate_num_insns_fn (tree, eni_weights *); |
| int estimate_num_insns_seq (gimple_seq, eni_weights *); |
| bool tree_versionable_function_p (tree); |
| extern tree remap_decl (tree decl, copy_body_data *id); |
| extern tree remap_type (tree type, copy_body_data *id); |
| extern gimple_seq copy_gimple_seq_and_replace_locals (gimple_seq seq); |
| extern bool debug_find_tree (tree, tree); |
| extern tree copy_fn (tree, tree&, tree&); |
| extern const char *copy_forbidden (struct function *fun); |
| extern tree copy_decl_for_dup_finish (copy_body_data *id, tree decl, tree copy); |
| extern tree copy_decl_to_var (tree, copy_body_data *); |
| extern tree force_value_to_type (tree type, tree value); |
| |
| /* This is in tree-inline.c since the routine uses |
| data structures from the inliner. */ |
| extern tree build_duplicate_type (tree); |
| |
| #endif /* GCC_TREE_INLINE_H */ |