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[/] [openrisc/] [trunk/] [gnu-stable/] [gcc-4.5.1/] [gcc/] [tree-inline.h] - Blame information for rev 859

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1 280 jeremybenn
/* Tree inlining hooks and declarations.
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   Copyright 2001, 2003, 2004, 2005, 2007, 2008, 2009
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   Free Software Foundation, Inc.
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   Contributed by Alexandre Oliva  <aoliva@redhat.com>
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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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#ifndef GCC_TREE_INLINE_H
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#define GCC_TREE_INLINE_H
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#include "gimple.h"
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struct cgraph_edge;
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/* Indicate the desired behavior wrt call graph edges.  We can either
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   duplicate the edge (inlining, cloning), move the edge (versioning,
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   parallelization), or move the edges of the clones (saving).  */
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enum copy_body_cge_which
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{
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  CB_CGE_DUPLICATE,
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  CB_CGE_MOVE,
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  CB_CGE_MOVE_CLONES
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};
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/* Data required for function body duplication.  */
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typedef struct copy_body_data
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{
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  /* FUNCTION_DECL for function being inlined, or in general the
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     source function providing the original trees.  */
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  tree src_fn;
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  /* FUNCTION_DECL for function being inlined into, or in general
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     the destination function receiving the new trees.  */
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  tree dst_fn;
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  /* Callgraph node of the source function.  */
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  struct cgraph_node *src_node;
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  /* Callgraph node of the destination function.  */
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  struct cgraph_node *dst_node;
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  /* struct function for function being inlined.  Usually this is the same
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     as DECL_STRUCT_FUNCTION (src_fn), but can be different if saved_cfg
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     and saved_eh are in use.  */
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  struct function *src_cfun;
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  /* The VAR_DECL for the return value.  */
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  tree retvar;
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  /* The map from local declarations in the inlined function to
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     equivalents in the function into which it is being inlined.  */
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  struct pointer_map_t *decl_map;
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  /* Create a new decl to replace DECL in the destination function.  */
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  tree (*copy_decl) (tree, struct copy_body_data *);
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  /* Current BLOCK.  */
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  tree block;
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  /* GIMPLE_CALL if va arg parameter packs should be expanded or NULL
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     is not.  */
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  gimple gimple_call;
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  /* Exception landing pad the inlined call lies in.  */
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  int eh_lp_nr;
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  /* Maps region and landing pad structures from the function being copied
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     to duplicates created within the function we inline into.  */
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  struct pointer_map_t *eh_map;
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  /* We use the same mechanism do all sorts of different things.  Rather
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     than enumerating the different cases, we categorize the behavior
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     in the various situations.  */
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  /* What to do with call graph edges.  */
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  enum copy_body_cge_which transform_call_graph_edges;
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  /* True if a new CFG should be created.  False for inlining, true for
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     everything else.  */
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  bool transform_new_cfg;
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  /* True if RETURN_EXPRs should be transformed to just the contained
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     MODIFY_EXPR.  The branch semantics of the return will be handled
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     by manipulating the CFG rather than a statement.  */
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  bool transform_return_to_modify;
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  /* True if this statement will need to be regimplified.  */
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  bool regimplify;
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  /* True if trees should not be unshared.  */
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  bool do_not_unshare;
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  /* > 0 if we are remapping a type currently.  */
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  int remapping_type_depth;
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  /* A function to be called when duplicating BLOCK nodes.  */
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  void (*transform_lang_insert_block) (tree);
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  /* Statements that might be possibly folded.  */
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  struct pointer_set_t *statements_to_fold;
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  /* Entry basic block to currently copied body.  */
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  struct basic_block_def *entry_bb;
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  /* Debug statements that need processing.  */
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  VEC(gimple,heap) *debug_stmts;
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  /* A map from local declarations in the inlined function to
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     equivalents in the function into which it is being inlined, where
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     the originals have been mapped to a value rather than to a
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     variable.  */
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  struct pointer_map_t *debug_map;
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} copy_body_data;
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/* Weights of constructions for estimate_num_insns.  */
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typedef struct eni_weights_d
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{
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  /* Cost per call.  */
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  unsigned call_cost;
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  /* Cost per call to a target specific builtin */
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  unsigned target_builtin_call_cost;
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  /* Cost of "expensive" div and mod operations.  */
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  unsigned div_mod_cost;
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  /* Cost for omp construct.  */
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  unsigned omp_cost;
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  /* True when time of statemnt should be estimated.  Thus i.e
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     cost of switch statement is logarithmic rather than linear in number
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     of cases.  */
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  bool time_based;
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} eni_weights;
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/* Weights that estimate_num_insns uses for heuristics in inlining.  */
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extern eni_weights eni_inlining_weights;
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/* Weights that estimate_num_insns uses to estimate the size of the
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   produced code.  */
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extern eni_weights eni_size_weights;
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/* Weights that estimate_num_insns uses to estimate the time necessary
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   to execute the produced code.  */
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extern eni_weights eni_time_weights;
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/* Function prototypes.  */
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extern tree copy_tree_body_r (tree *, int *, void *);
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extern void insert_decl_map (copy_body_data *, tree, tree);
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unsigned int optimize_inline_calls (tree);
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tree maybe_inline_call_in_expr (tree);
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bool tree_inlinable_function_p (tree);
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tree copy_tree_r (tree *, int *, void *);
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tree copy_decl_no_change (tree decl, copy_body_data *id);
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void save_body (tree, tree *, tree *);
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int estimate_move_cost (tree type);
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int estimate_num_insns (gimple, eni_weights *);
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int estimate_num_insns_fn (tree, eni_weights *);
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int count_insns_seq (gimple_seq, eni_weights *);
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bool tree_versionable_function_p (tree);
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bool tree_can_inline_p (struct cgraph_edge *e);
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extern gimple_seq remap_gimple_seq (gimple_seq, copy_body_data *);
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extern tree remap_decl (tree decl, copy_body_data *id);
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extern tree remap_type (tree type, copy_body_data *id);
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extern gimple_seq copy_gimple_seq_and_replace_locals (gimple_seq seq);
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extern HOST_WIDE_INT estimated_stack_frame_size (void);
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#endif /* GCC_TREE_INLINE_H */

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