| /* Inlining decision heuristics. |
| Copyright (C) 2003-2022 Free Software Foundation, Inc. |
| Contributed by Jan Hubicka |
| |
| 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_IPA_INLINE_H |
| #define GCC_IPA_INLINE_H |
| |
| /* Data we cache about callgraph edges during inlining to avoid expensive |
| re-computations during the greedy algorithm. */ |
| class edge_growth_cache_entry |
| { |
| public: |
| sreal time, nonspec_time; |
| int size; |
| ipa_hints hints; |
| |
| edge_growth_cache_entry() |
| : size (0), hints (0) {} |
| |
| edge_growth_cache_entry(int64_t time, int64_t nonspec_time, |
| int size, ipa_hints hints) |
| : time (time), nonspec_time (nonspec_time), size (size), |
| hints (hints) {} |
| }; |
| |
| extern fast_call_summary<edge_growth_cache_entry *, va_heap> *edge_growth_cache; |
| |
| /* In ipa-inline-analysis.cc */ |
| int estimate_size_after_inlining (struct cgraph_node *, struct cgraph_edge *); |
| int estimate_growth (struct cgraph_node *); |
| bool growth_positive_p (struct cgraph_node *, struct cgraph_edge *, int); |
| int do_estimate_edge_size (struct cgraph_edge *edge); |
| sreal do_estimate_edge_time (struct cgraph_edge *edge, sreal *nonspec_time = NULL); |
| ipa_hints do_estimate_edge_hints (struct cgraph_edge *edge); |
| void reset_node_cache (struct cgraph_node *node); |
| void initialize_growth_caches (); |
| void free_growth_caches (void); |
| |
| /* In ipa-inline.cc */ |
| unsigned int early_inliner (function *fun); |
| bool inline_account_function_p (struct cgraph_node *node); |
| |
| |
| /* In ipa-inline-transform.cc */ |
| bool inline_call (struct cgraph_edge *, bool, vec<cgraph_edge *> *, int *, bool, |
| bool *callee_removed = NULL); |
| unsigned int inline_transform (struct cgraph_node *); |
| void clone_inlined_nodes (struct cgraph_edge *e, bool, bool, int *); |
| |
| extern int ncalls_inlined; |
| extern int nfunctions_inlined; |
| extern function_summary <tree *> *ipa_saved_clone_sources; |
| |
| /* Return estimated size of the inline sequence of EDGE. */ |
| |
| static inline int |
| estimate_edge_size (struct cgraph_edge *edge) |
| { |
| edge_growth_cache_entry *entry; |
| if (edge_growth_cache == NULL |
| || (entry = edge_growth_cache->get (edge)) == NULL |
| || entry->size == 0) |
| return do_estimate_edge_size (edge); |
| return entry->size - (entry->size > 0); |
| } |
| |
| /* Return lower bound on estimated callee growth after inlining EDGE. */ |
| |
| static inline int |
| estimate_min_edge_growth (struct cgraph_edge *edge) |
| { |
| ipa_call_summary *s = ipa_call_summaries->get (edge); |
| struct cgraph_node *callee = edge->callee->ultimate_alias_target (); |
| return (ipa_fn_summaries->get (callee)->min_size - s->call_stmt_size); |
| } |
| |
| /* Return estimated callee growth after inlining EDGE. */ |
| |
| static inline int |
| estimate_edge_growth (struct cgraph_edge *edge) |
| { |
| ipa_call_summary *s = ipa_call_summaries->get (edge); |
| gcc_checking_assert (s->call_stmt_size || !edge->callee->analyzed); |
| return (estimate_edge_size (edge) - s->call_stmt_size); |
| } |
| |
| /* Return estimated callee runtime increase after inlining |
| EDGE. */ |
| |
| static inline sreal |
| estimate_edge_time (struct cgraph_edge *edge, sreal *nonspec_time = NULL) |
| { |
| edge_growth_cache_entry *entry; |
| if (edge_growth_cache == NULL |
| || (entry = edge_growth_cache->get (edge)) == NULL |
| || entry->time == 0) |
| return do_estimate_edge_time (edge, nonspec_time); |
| if (nonspec_time) |
| *nonspec_time = edge_growth_cache->get (edge)->nonspec_time; |
| return entry->time; |
| } |
| |
| |
| /* Return estimated callee runtime increase after inlining |
| EDGE. */ |
| |
| static inline ipa_hints |
| estimate_edge_hints (struct cgraph_edge *edge) |
| { |
| edge_growth_cache_entry *entry; |
| if (edge_growth_cache == NULL |
| || (entry = edge_growth_cache->get (edge)) == NULL |
| || entry->hints == 0) |
| return do_estimate_edge_hints (edge); |
| return entry->hints - 1; |
| } |
| |
| #endif /* GCC_IPA_INLINE_H */ |