/* Tree inlining hooks and declarations.
- Copyright 2001, 2003 Free Software Foundation, Inc.
+ Copyright 2001, 2003, 2004, 2005 Free Software Foundation, Inc.
Contributed by Alexandre Oliva <aoliva@redhat.com>
This file is part of GCC.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA. */
#ifndef GCC_TREE_INLINE_H
#define GCC_TREE_INLINE_H
+#include "varray.h"
+#include "pointer-set.h"
+
+
+/* Data required for function body duplication. */
+
+typedef 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. */
+ struct pointer_map_t *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;
+
+ /* Exception region the inlined call lie in. */
+ int eh_region;
+ /* Take region number in the function being copied, add this value and
+ get eh region number of the duplicate in the function we inline into. */
+ int eh_region_offset;
+
+ /* 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. */
+
+ /* 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
+ } 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 lang_hooks.decls.insert_block should be invoked when
+ duplicating BLOCK nodes. */
+ bool transform_lang_insert_block;
+
+ /* Statements that might be possibly folded. */
+ struct pointer_set_t *statements_to_fold;
+} copy_body_data;
+
+/* Weights of constructions for estimate_num_insns. */
+
+typedef struct eni_weights_d
+{
+ /* Cost per call. */
+ unsigned call_cost;
+
+ /* Cost of "expensive" div and mod operations. */
+ unsigned div_mod_cost;
+
+ /* Cost of switch statement. */
+ unsigned switch_cost;
+
+ /* Cost for omp construct. */
+ unsigned omp_cost;
+} eni_weights;
+
+/* 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 optimize_inline_calls (tree);
+extern tree copy_body_r (tree *, int *, void *);
+extern void insert_decl_map (copy_body_data *, tree, tree);
+
+unsigned int optimize_inline_calls (tree);
bool tree_inlinable_function_p (tree);
-tree walk_tree (tree*, walk_tree_fn, void*, void*);
-tree walk_tree_without_duplicates (tree*, walk_tree_fn, void*);
-tree copy_tree_r (tree*, int*, void*);
-void clone_body (tree, tree, void*);
-tree save_body (tree, tree *);
-void remap_save_expr (tree*, void*, tree, int*);
+tree copy_tree_r (tree *, int *, void *);
+void clone_body (tree, tree, void *);
+void save_body (tree, tree *, tree *);
+int estimate_move_cost (tree type);
+void push_cfun (struct function *new_cfun);
+void pop_cfun (void);
+int estimate_num_insns (tree expr, eni_weights *);
+bool tree_versionable_function_p (tree);
+void tree_function_versioning (tree, tree, varray_type, bool);
+
+extern tree remap_decl (tree decl, copy_body_data *id);
+extern tree remap_type (tree type, copy_body_data *id);
+
+extern HOST_WIDE_INT estimated_stack_frame_size (void);
/* 0 if we should not perform inlining.
1 if we should expand functions calls inline at the tree level.
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