/* Data and Control Flow Analysis for Trees.
- Copyright (C) 2001, 2003, 2004, 2005, 2006, 2007, 2008
+ Copyright (C) 2001, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
Free Software Foundation, Inc.
Contributed by Diego Novillo <dnovillo@redhat.com>
#define _TREE_FLOW_H 1
#include "bitmap.h"
-#include "hard-reg-set.h"
+#include "sbitmap.h"
#include "basic-block.h"
#include "hashtab.h"
#include "gimple.h"
#include "tree-ssa-operands.h"
#include "cgraph.h"
#include "ipa-reference.h"
-
-/* Forward declare structures for the garbage collector GTY markers. */
-#ifndef GCC_BASIC_BLOCK_H
-struct edge_def;
-typedef struct edge_def *edge;
-struct basic_block_def;
-typedef struct basic_block_def *basic_block;
-#endif
-struct static_var_ann_d;
-
-/* The reasons a variable may escape a function. */
-enum escape_type
-{
- NO_ESCAPE = 0, /* Doesn't escape. */
- ESCAPE_STORED_IN_GLOBAL = 1 << 0,
- ESCAPE_TO_ASM = 1 << 1, /* Passed by address to an assembly
- statement. */
- ESCAPE_TO_CALL = 1 << 2, /* Escapes to a function call. */
- ESCAPE_BAD_CAST = 1 << 3, /* Cast from pointer to integer */
- ESCAPE_TO_RETURN = 1 << 4, /* Returned from function. */
- ESCAPE_TO_PURE_CONST = 1 << 5, /* Escapes to a pure or constant
- function call. */
- ESCAPE_IS_GLOBAL = 1 << 6, /* Is a global variable. */
- ESCAPE_IS_PARM = 1 << 7, /* Is an incoming function argument. */
- ESCAPE_UNKNOWN = 1 << 8 /* We believe it escapes for
- some reason not enumerated
- above. */
-};
-
-/* Memory reference statistics for individual memory symbols,
- collected during alias analysis. */
-struct mem_sym_stats_d GTY(())
-{
- /* Memory symbol. */
- tree var;
-
- /* Nonzero if this entry has been assigned a partition. */
- unsigned int partitioned_p : 1;
-
- /* Nonzero if VAR is a memory partition tag that already contains
- call-clobbered variables in its partition set. */
- unsigned int has_call_clobbered_vars : 1;
-
- /* Number of direct reference sites. A direct reference to VAR is any
- reference of the form 'VAR = ' or ' = VAR'. For GIMPLE reg
- pointers, this is the number of sites where the pointer is
- dereferenced. */
- long num_direct_writes;
- long num_direct_reads;
-
- /* Number of indirect reference sites. An indirect reference to VAR
- is any reference via a pointer that contains VAR in its points-to
- set or, in the case of call-clobbered symbols, a function call. */
- long num_indirect_writes;
- long num_indirect_reads;
-
- /* Execution frequency. This is the sum of the execution
- frequencies of all the statements that reference this object
- weighted by the number of references in each statement. This is
- the main key used to sort the list of symbols to partition.
- Symbols with high execution frequencies are put at the bottom of
- the work list (ie, they are partitioned last).
- Execution frequencies are taken directly from each basic block,
- so compiling with PGO enabled will increase the precision of this
- estimate. */
- long frequency_reads;
- long frequency_writes;
-
- /* Set of memory tags that contain VAR in their alias set. */
- bitmap parent_tags;
-};
-
-typedef struct mem_sym_stats_d *mem_sym_stats_t;
-DEF_VEC_P(mem_sym_stats_t);
-DEF_VEC_ALLOC_P(mem_sym_stats_t, heap);
-
-/* Memory reference statistics collected during alias analysis. */
-struct mem_ref_stats_d GTY(())
-{
- /* Number of statements that make memory references. */
- long num_mem_stmts;
-
- /* Number of statements that make function calls. */
- long num_call_sites;
-
- /* Number of statements that make calls to pure/const functions. */
- long num_pure_const_call_sites;
-
- /* Number of ASM statements. */
- long num_asm_sites;
-
- /* Estimated number of virtual operands needed as computed by
- compute_memory_partitions. */
- long num_vuses;
- long num_vdefs;
-
- /* This maps every symbol used to make "memory" references
- (pointers, arrays, structures, etc) to an instance of struct
- mem_sym_stats_d describing reference statistics for the symbol. */
- struct pointer_map_t * GTY((skip)) mem_sym_stats;
-};
+#include "tree-ssa-alias.h"
/* Gimple dataflow datastructure. All publicly available fields shall have
gimple_ accessor defined in tree-flow-inline.h, all publicly modifiable
fields should have gimple_set accessor. */
-struct gimple_df GTY(())
-{
+struct GTY(()) gimple_df {
/* Array of all variables referenced in the function. */
htab_t GTY((param_is (union tree_node))) referenced_vars;
/* Array of all SSA_NAMEs used in the function. */
VEC(tree,gc) *ssa_names;
- /* Artificial variable used to model the effects of function calls. */
- tree global_var;
+ /* Artificial variable used for the virtual operand FUD chain. */
+ tree vop;
- /* Artificial variable used to model the effects of nonlocal
- variables. */
- tree nonlocal_all;
+ /* The PTA solution for the ESCAPED artificial variable. */
+ struct pt_solution escaped;
- /* Call clobbered variables in the function. If bit I is set, then
- REFERENCED_VARS (I) is call-clobbered. */
- bitmap call_clobbered_vars;
-
- /* Call-used variables in the function. If bit I is set, then
- REFERENCED_VARS (I) is call-used at pure function call-sites. */
- bitmap call_used_vars;
-
- /* Addressable variables in the function. If bit I is set, then
- REFERENCED_VARS (I) has had its address taken. Note that
- CALL_CLOBBERED_VARS and ADDRESSABLE_VARS are not related. An
- addressable variable is not necessarily call-clobbered (e.g., a
- local addressable whose address does not escape) and not all
- call-clobbered variables are addressable (e.g., a local static
- variable). */
- bitmap addressable_vars;
+ /* A map of decls to artificial ssa-names that point to the partition
+ of the decl. */
+ struct pointer_map_t * GTY((skip(""))) decls_to_pointers;
/* Free list of SSA_NAMEs. */
tree free_ssanames;
for this variable with an empty defining statement. */
htab_t GTY((param_is (union tree_node))) default_defs;
- /* 'true' after aliases have been computed (see compute_may_aliases). */
- unsigned int aliases_computed_p : 1;
+ /* Symbols whose SSA form needs to be updated or created for the first
+ time. */
+ bitmap syms_to_rename;
/* True if the code is in ssa form. */
unsigned int in_ssa_p : 1;
- struct ssa_operands ssa_operands;
+ /* True if IPA points-to information was computed for this function. */
+ unsigned int ipa_pta : 1;
- /* Memory reference statistics collected during alias analysis.
- This information is used to drive the memory partitioning
- heuristics in compute_memory_partitions. */
- struct mem_ref_stats_d mem_ref_stats;
+ struct ssa_operands ssa_operands;
};
/* Accessors for internal use only. Generic code should use abstraction
#define SSANAMES(fun) (fun)->gimple_df->ssa_names
#define MODIFIED_NORETURN_CALLS(fun) (fun)->gimple_df->modified_noreturn_calls
#define DEFAULT_DEFS(fun) (fun)->gimple_df->default_defs
+#define SYMS_TO_RENAME(fun) (fun)->gimple_df->syms_to_rename
typedef struct
{
/*---------------------------------------------------------------------------
Attributes for SSA_NAMEs.
-
+
NOTE: These structures are stored in struct tree_ssa_name
but are only used by the tree optimizers, so it makes better sense
to declare them here to avoid recompiling unrelated files when
---------------------------------------------------------------------------*/
/* Aliasing information for SSA_NAMEs representing pointer variables. */
-struct ptr_info_def GTY(())
-{
- /* Mask of reasons this pointer's value escapes the function. */
- ENUM_BITFIELD (escape_type) escape_mask : 9;
-
- /* Nonzero if points-to analysis couldn't determine where this pointer
- is pointing to. */
- unsigned int pt_anything : 1;
-
- /* Nonzero if the value of this pointer escapes the current function. */
- unsigned int value_escapes_p : 1;
-
- /* Nonzero if a memory tag is needed for this pointer. This is
- true if this pointer is eventually dereferenced. */
- unsigned int memory_tag_needed : 1;
- /* Nonzero if this pointer is really dereferenced. */
- unsigned int is_dereferenced : 1;
-
- /* Nonzero if this pointer points to a global variable. */
- unsigned int pt_global_mem : 1;
-
- /* Nonzero if this pointer points to NULL. */
- unsigned int pt_null : 1;
-
- /* Set of variables that this pointer may point to. */
- bitmap pt_vars;
-
- /* If this pointer has been dereferenced, and points-to information is
- more precise than type-based aliasing, indirect references to this
- pointer will be represented by this memory tag, instead of the type
- tag computed by TBAA. */
- tree name_mem_tag;
-};
-
-
-/*---------------------------------------------------------------------------
- Tree annotations stored in tree_base.ann
----------------------------------------------------------------------------*/
-enum tree_ann_type { TREE_ANN_COMMON, VAR_ANN, FUNCTION_ANN };
-
-struct tree_ann_common_d GTY(())
+struct GTY(()) ptr_info_def
{
- /* Annotation type. */
- enum tree_ann_type type;
-
- /* Record EH region number into a statement tree created during RTL
- expansion (see gimple_to_tree). */
- int rn;
-
- /* Auxiliary info specific to a pass. At all times, this
- should either point to valid data or be NULL. */
- PTR GTY ((skip (""))) aux;
-
- /* The value handle for this expression. Used by GVN-PRE. */
- tree GTY((skip)) value_handle;
-
- /* Pointer to original GIMPLE statement. Used during RTL expansion
- (see gimple_to_tree). */
- gimple stmt;
+ /* The points-to solution. */
+ struct pt_solution pt;
};
+
/* It is advantageous to avoid things like life analysis for variables which
do not need PHI nodes. This enum describes whether or not a particular
variable may need a PHI node. */
needs PHI nodes. This is probably an overly conservative assumption. */
NEED_PHI_STATE_UNKNOWN,
- /* This state indicates that we have seen one or more sets of the
+ /* This state indicates that we have seen one or more sets of the
variable in a single basic block and that the sets dominate all
uses seen so far. If after finding all definition and use sites
we are still in this state, then the variable does not need any
};
-struct var_ann_d GTY(())
-{
- struct tree_ann_common_d common;
-
- /* Used by the out of SSA pass to determine whether this variable has
- been seen yet or not. */
- unsigned out_of_ssa_tag : 1;
-
+struct GTY(()) var_ann_d {
/* Used when building base variable structures in a var_map. */
unsigned base_var_processed : 1;
states. */
ENUM_BITFIELD (need_phi_state) need_phi_state : 2;
- /* Used during operand processing to determine if this variable is already
- in the VUSE list. */
- unsigned in_vuse_list : 1;
-
- /* Used during operand processing to determine if this variable is already
- in the VDEF list. */
- unsigned in_vdef_list : 1;
-
/* True for HEAP artificial variables. These variables represent
the memory area allocated by a call to malloc. */
unsigned is_heapvar : 1;
- /* True if the variable is call clobbered. */
- unsigned call_clobbered : 1;
-
/* This field describes several "no alias" attributes that some
symbols are known to have. See the enum's definition for more
information on each attribute. */
ENUM_BITFIELD (noalias_state) noalias_state : 2;
- /* Mask of values saying the reasons why this variable has escaped
- the function. */
- ENUM_BITFIELD (escape_type) escape_mask : 9;
-
- /* Memory partition tag assigned to this symbol. */
- tree mpt;
-
- /* If this variable is a pointer P that has been dereferenced, this
- field is an artificial variable that represents the memory
- location *P. Every other pointer Q that is type-compatible with
- P will also have the same memory tag. If the variable is not a
- pointer or if it is never dereferenced, this must be NULL.
- FIXME, do we really need this here? How much slower would it be
- to convert to hash table? */
- tree symbol_mem_tag;
-
- /* Used when going out of SSA form to indicate which partition this
- variable represents storage for. */
- unsigned partition;
-
/* Used by var_map for the base index of ssa base variables. */
unsigned base_index;
tree current_def;
};
-/* Container for variable annotation used by hashtable for annotations for
- static variables. */
-struct static_var_ann_d GTY(())
-{
- struct var_ann_d ann;
- unsigned int uid;
-};
-
-struct function_ann_d GTY(())
-{
- struct tree_ann_common_d common;
-};
-
/* Immediate use lists are used to directly access all uses for an SSA
- name and get pointers to the statement for each use.
+ name and get pointers to the statement for each use.
The structure ssa_use_operand_d consists of PREV and NEXT pointers
to maintain the list. A USE pointer, which points to address where
iterator manages this by inserting a marker node into the list
immediately before the node currently being examined in the list.
this marker node is uniquely identified by having null stmt *and* a
- null use pointer.
+ null use pointer.
When iterating to the next use, the iteration routines check to see
if the node after the marker has changed. if it has, then the node
/* Use this iterator when simply looking at stmts. Adding, deleting or
modifying stmts will cause this iterator to malfunction. */
-#define FOR_EACH_IMM_USE_FAST(DEST, ITER, SSAVAR) \
+#define FOR_EACH_IMM_USE_FAST(DEST, ITER, SSAVAR) \
for ((DEST) = first_readonly_imm_use (&(ITER), (SSAVAR)); \
!end_readonly_imm_use_p (&(ITER)); \
- (DEST) = next_readonly_imm_use (&(ITER)))
-
+ (void) ((DEST) = next_readonly_imm_use (&(ITER))))
+
/* Use this iterator to visit each stmt which has a use of SSAVAR. */
#define FOR_EACH_IMM_USE_STMT(STMT, ITER, SSAVAR) \
for ((STMT) = first_imm_use_stmt (&(ITER), (SSAVAR)); \
!end_imm_use_stmt_p (&(ITER)); \
- (STMT) = next_imm_use_stmt (&(ITER)))
+ (void) ((STMT) = next_imm_use_stmt (&(ITER))))
-/* Use this to terminate the FOR_EACH_IMM_USE_STMT loop early. Failure to
+/* Use this to terminate the FOR_EACH_IMM_USE_STMT loop early. Failure to
do so will result in leaving a iterator marker node in the immediate
use list, and nothing good will come from that. */
#define BREAK_FROM_IMM_USE_STMT(ITER) \
}
-/* Use this iterator in combination with FOR_EACH_IMM_USE_STMT to
+/* Use this iterator in combination with FOR_EACH_IMM_USE_STMT to
get access to each occurrence of ssavar on the stmt returned by
that iterator.. for instance:
#define FOR_EACH_IMM_USE_ON_STMT(DEST, ITER) \
for ((DEST) = first_imm_use_on_stmt (&(ITER)); \
!end_imm_use_on_stmt_p (&(ITER)); \
- (DEST) = next_imm_use_on_stmt (&(ITER)))
+ (void) ((DEST) = next_imm_use_on_stmt (&(ITER))))
-union tree_ann_d GTY((desc ("ann_type ((tree_ann_t)&%h)")))
-{
- struct tree_ann_common_d GTY((tag ("TREE_ANN_COMMON"))) common;
- struct var_ann_d GTY((tag ("VAR_ANN"))) vdecl;
- struct function_ann_d GTY((tag ("FUNCTION_ANN"))) fdecl;
-};
-
-typedef union tree_ann_d *tree_ann_t;
typedef struct var_ann_d *var_ann_t;
-typedef struct function_ann_d *function_ann_t;
-typedef struct tree_ann_common_d *tree_ann_common_t;
-static inline tree_ann_common_t tree_common_ann (const_tree);
-static inline tree_ann_common_t get_tree_common_ann (tree);
static inline var_ann_t var_ann (const_tree);
static inline var_ann_t get_var_ann (tree);
-static inline function_ann_t function_ann (const_tree);
-static inline function_ann_t get_function_ann (tree);
-static inline enum tree_ann_type ann_type (tree_ann_t);
static inline void update_stmt (gimple);
-static inline bitmap may_aliases (const_tree);
static inline int get_lineno (const_gimple);
/*---------------------------------------------------------------------------
Structure representing predictions in tree level.
---------------------------------------------------------------------------*/
-struct edge_prediction GTY((chain_next ("%h.ep_next")))
-{
+struct GTY((chain_next ("%h.ep_next"))) edge_prediction {
struct edge_prediction *ep_next;
edge ep_edge;
enum br_predictor ep_predictor;
/*---------------------------------------------------------------------------
Global declarations
---------------------------------------------------------------------------*/
-struct int_tree_map GTY(())
-{
-
+struct GTY(()) int_tree_map {
+
unsigned int uid;
tree to;
};
extern unsigned int uid_decl_map_hash (const void *);
extern int uid_decl_map_eq (const void *, const void *);
-typedef struct
+typedef struct
{
htab_iterator hti;
} referenced_var_iterator;
-
/* This macro loops over all the referenced vars, one at a time, putting the
current var in VAR. Note: You are not allowed to add referenced variables
to the hashtable while using this macro. Doing so may cause it to behave
#define FOR_EACH_REFERENCED_VAR(VAR, ITER) \
for ((VAR) = first_referenced_var (&(ITER)); \
!end_referenced_vars_p (&(ITER)); \
- (VAR) = next_referenced_var (&(ITER)))
-
-
-typedef struct
-{
- int i;
-} safe_referenced_var_iterator;
-
-/* This macro loops over all the referenced vars, one at a time, putting the
- current var in VAR. You are allowed to add referenced variables during the
- execution of this macro, however, the macro will not iterate over them. It
- requires a temporary vector of trees, VEC, whose lifetime is controlled by
- the caller. The purpose of the vector is to temporarily store the
- referenced_variables hashtable so that adding referenced variables does not
- affect the hashtable. */
-
-#define FOR_EACH_REFERENCED_VAR_SAFE(VAR, VEC, ITER) \
- for ((ITER).i = 0, fill_referenced_var_vec (&(VEC)); \
- VEC_iterate (tree, (VEC), (ITER).i, (VAR)); \
- (ITER).i++)
+ (VAR) = next_referenced_var (&(ITER)))
extern tree referenced_var_lookup (unsigned int);
extern bool referenced_var_check_and_insert (tree);
basic_block, tree);
void remove_edge_and_dominated_blocks (edge);
void mark_virtual_ops_in_bb (basic_block);
+bool tree_node_can_be_shared (tree);
/* In tree-cfgcleanup.c */
extern bitmap cfgcleanup_altered_bbs;
/* In tree-pretty-print.c. */
extern void dump_generic_bb (FILE *, basic_block, int, int);
+extern int op_code_prio (enum tree_code);
+extern int op_prio (const_tree);
extern const char *op_symbol_code (enum tree_code);
/* In tree-dfa.c */
extern var_ann_t create_var_ann (tree);
-extern function_ann_t create_function_ann (tree);
extern void renumber_gimple_stmt_uids (void);
-extern tree_ann_common_t create_tree_common_ann (tree);
+extern void renumber_gimple_stmt_uids_in_blocks (basic_block *, int);
extern void dump_dfa_stats (FILE *);
extern void debug_dfa_stats (void);
extern void debug_referenced_vars (void);
extern void dump_variable (FILE *, tree);
extern void debug_variable (tree);
extern tree get_virtual_var (tree);
-extern void add_referenced_var (tree);
+extern bool add_referenced_var (tree);
extern void remove_referenced_var (tree);
extern void mark_symbols_for_renaming (gimple);
extern void find_new_referenced_vars (gimple);
extern void set_default_def (tree, tree);
extern tree gimple_default_def (struct function *, tree);
extern bool stmt_references_abnormal_ssa_name (gimple);
-extern bool refs_may_alias_p (tree, tree);
-extern gimple get_single_def_stmt (gimple);
-extern gimple get_single_def_stmt_from_phi (tree, gimple);
-extern gimple get_single_def_stmt_with_phi (tree, gimple);
+extern tree get_ref_base_and_extent (tree, HOST_WIDE_INT *,
+ HOST_WIDE_INT *, HOST_WIDE_INT *);
+extern void find_referenced_vars_in (gimple);
/* In tree-phinodes.c */
extern void reserve_phi_args_for_new_edge (basic_block);
extern void add_phi_node_to_bb (gimple phi, basic_block bb);
extern gimple make_phi_node (tree var, int len);
extern gimple create_phi_node (tree, basic_block);
-extern void add_phi_arg (gimple, tree, edge);
+extern void add_phi_arg (gimple, tree, edge, source_location);
extern void remove_phi_args (edge);
extern void remove_phi_node (gimple_stmt_iterator *, bool);
extern void remove_phi_nodes (basic_block);
extern bool block_may_fallthru (const_tree);
extern bool gimple_seq_may_fallthru (gimple_seq);
extern bool gimple_stmt_may_fallthru (gimple);
-
-/* In tree-ssa-alias.c */
-extern unsigned int compute_may_aliases (void);
-extern void dump_may_aliases_for (FILE *, tree);
-extern void debug_may_aliases_for (tree);
-extern void dump_alias_info (FILE *);
-extern void debug_alias_info (void);
-extern void dump_points_to_info (FILE *);
-extern void debug_points_to_info (void);
-extern void dump_points_to_info_for (FILE *, tree);
-extern void debug_points_to_info_for (tree);
-extern bool may_be_aliased (tree);
-extern bool may_alias_p (tree, alias_set_type, tree, alias_set_type, bool);
-extern struct ptr_info_def *get_ptr_info (tree);
-extern bool may_point_to_global_var (tree);
-extern void new_type_alias (tree, tree, tree);
-extern void count_uses_and_derefs (tree, gimple, unsigned *, unsigned *,
- unsigned *);
-static inline bool ref_contains_array_ref (const_tree);
-static inline bool array_ref_contains_indirect_ref (const_tree);
-extern tree get_ref_base_and_extent (tree, HOST_WIDE_INT *,
- HOST_WIDE_INT *, HOST_WIDE_INT *);
-extern tree create_tag_raw (enum tree_code, tree, const char *);
-extern void delete_mem_ref_stats (struct function *);
-extern void dump_mem_ref_stats (FILE *);
-extern void debug_mem_ref_stats (void);
-extern void debug_memory_partitions (void);
-extern void debug_mem_sym_stats (tree var);
-extern void dump_mem_sym_stats_for_var (FILE *, tree);
-extern void debug_all_mem_sym_stats (void);
-
-/* Call-back function for walk_use_def_chains(). At each reaching
- definition, a function with this prototype is called. */
-typedef bool (*walk_use_def_chains_fn) (tree, gimple, void *);
-
-/* In tree-ssa-alias-warnings.c */
-extern void strict_aliasing_warning_backend (void);
+extern bool gimple_check_call_args (gimple);
/* In tree-ssa.c */
/* Mapping for redirected edges. */
-struct _edge_var_map GTY(())
-{
+struct GTY(()) _edge_var_map {
tree result; /* PHI result. */
tree def; /* PHI arg definition. */
+ source_location locus; /* PHI arg location. */
};
typedef struct _edge_var_map edge_var_map;
typedef VEC(edge_var_map, heap) *edge_var_map_vector;
extern void init_tree_ssa (struct function *);
-extern void redirect_edge_var_map_add (edge, tree, tree);
+extern void redirect_edge_var_map_add (edge, tree, tree, source_location);
extern void redirect_edge_var_map_clear (edge);
extern void redirect_edge_var_map_dup (edge, edge);
extern edge_var_map_vector redirect_edge_var_map_vector (edge);
extern void flush_pending_stmts (edge);
extern void verify_ssa (bool);
extern void delete_tree_ssa (void);
-extern void walk_use_def_chains (tree, walk_use_def_chains_fn, void *, bool);
extern bool ssa_undefined_value_p (tree);
+extern void warn_uninit (tree, const char *, void *);
+extern unsigned int warn_uninitialized_vars (bool);
+extern void execute_update_addresses_taken (bool);
+
+/* Call-back function for walk_use_def_chains(). At each reaching
+ definition, a function with this prototype is called. */
+typedef bool (*walk_use_def_chains_fn) (tree, gimple, void *);
+extern void walk_use_def_chains (tree, walk_use_def_chains_fn, void *, bool);
+
+void insert_debug_temps_for_defs (gimple_stmt_iterator *);
+void insert_debug_temp_for_var_def (gimple_stmt_iterator *, tree);
+void release_defs_bitset (bitmap toremove);
/* In tree-into-ssa.c */
void update_ssa (unsigned);
void delete_update_ssa (void);
void register_new_name_mapping (tree, tree);
tree create_new_def_for (tree, gimple, def_operand_p);
-bool need_ssa_update_p (void);
+bool need_ssa_update_p (struct function *);
bool name_mappings_registered_p (void);
bool name_registered_for_update_p (tree);
bitmap ssa_names_to_replace (void);
#endif
/* In tree-ssa-ccp.c */
-bool fold_stmt (gimple_stmt_iterator *);
-bool fold_stmt_inplace (gimple);
-tree get_symbol_constant_value (tree);
tree fold_const_aggregate_ref (tree);
-bool may_propagate_address_into_dereference (tree, tree);
-
-
-/* In tree-vrp.c */
-tree vrp_evaluate_conditional (enum tree_code, tree, tree, gimple);
-bool simplify_stmt_using_ranges (gimple_stmt_iterator *);
/* In tree-ssa-dom.c */
extern void dump_dominator_optimization_stats (FILE *);
extern void debug_dominator_optimization_stats (void);
int loop_depth_of_name (tree);
+tree degenerate_phi_result (gimple);
/* In tree-ssa-copy.c */
-extern void merge_alias_info (tree, tree);
extern void propagate_value (use_operand_p, tree);
extern void propagate_tree_value (tree *, tree);
extern void propagate_tree_value_into_stmt (gimple_stmt_iterator *, tree);
enum tree_code cmp;
};
-/* In tree-vectorizer.c */
-unsigned vectorize_loops (void);
-extern bool vect_can_force_dr_alignment_p (const_tree, unsigned int);
-extern tree get_vectype_for_scalar_type (tree);
-
/* In tree-ssa-phiopt.c */
bool empty_block_p (basic_block);
basic_block *blocks_in_phiopt_order (void);
/* In tree-ssa-loop*.c */
-void tree_ssa_lim (void);
+unsigned int tree_ssa_lim (void);
unsigned int tree_ssa_unswitch_loops (void);
unsigned int canonicalize_induction_variables (void);
unsigned int tree_unroll_loops_completely (bool, bool);
unsigned int tree_ssa_prefetch_arrays (void);
-unsigned int remove_empty_loops (void);
void tree_ssa_iv_optimize (void);
unsigned tree_predictive_commoning (void);
-tree canonicalize_loop_ivs (struct loop *, htab_t, tree);
+tree canonicalize_loop_ivs (struct loop *, tree *, bool);
bool parallelize_loops (void);
bool loop_only_exit_p (const struct loop *, const_edge);
tree loop_niter_by_eval (struct loop *, edge);
tree find_loop_niter_by_eval (struct loop *, edge *);
void estimate_numbers_of_iterations (void);
+bool array_at_struct_end_p (tree);
bool scev_probably_wraps_p (tree, tree, gimple, struct loop *, bool);
bool convert_affine_scev (struct loop *, tree, tree *, tree *, gimple, bool);
void free_numbers_of_iterations_estimates (void);
void free_numbers_of_iterations_estimates_loop (struct loop *);
void rewrite_into_loop_closed_ssa (bitmap, unsigned);
-void verify_loop_closed_ssa (void);
+void verify_loop_closed_ssa (bool);
bool for_each_index (tree *, bool (*) (tree, tree *, void *), void *);
void create_iv (tree, tree, tree, struct loop *, gimple_stmt_iterator *, bool,
tree *, tree *);
bool stmt_dominates_stmt_p (gimple, gimple);
void mark_virtual_ops_for_renaming (gimple);
+/* In tree-ssa-dce.c */
+void mark_virtual_phi_result_for_renaming (gimple);
+
/* In tree-ssa-threadedge.c */
+extern void threadedge_initialize_values (void);
+extern void threadedge_finalize_values (void);
+extern VEC(tree,heap) *ssa_name_values;
+#define SSA_NAME_VALUE(x) \
+ (SSA_NAME_VERSION(x) < VEC_length(tree, ssa_name_values) \
+ ? VEC_index(tree, ssa_name_values, SSA_NAME_VERSION(x)) \
+ : NULL_TREE)
+extern void set_ssa_name_value (tree, tree);
extern bool potentially_threadable_block (basic_block);
extern void thread_across_edge (gimple, edge, bool,
VEC(tree, heap) **, tree (*) (gimple, gimple));
char *get_lsm_tmp_name (tree, unsigned);
/* In tree-flow-inline.h */
-static inline bool is_call_clobbered (const_tree);
-static inline void mark_call_clobbered (tree, unsigned int);
static inline void set_is_used (tree);
static inline bool unmodifiable_var_p (const_tree);
+static inline bool ref_contains_array_ref (const_tree);
+static inline bool array_ref_contains_indirect_ref (const_tree);
/* In tree-eh.c */
extern void make_eh_edges (gimple);
+extern bool make_eh_dispatch_edges (gimple);
+extern edge redirect_eh_edge (edge, basic_block);
+extern void redirect_eh_dispatch_edge (gimple, edge, basic_block);
extern bool tree_could_trap_p (tree);
+extern bool operation_could_trap_helper_p (enum tree_code, bool, bool, bool,
+ bool, tree, bool *);
extern bool operation_could_trap_p (enum tree_code, bool, bool, tree);
extern bool stmt_could_throw_p (gimple);
extern bool tree_could_throw_p (tree);
extern bool stmt_can_throw_internal (gimple);
-extern void add_stmt_to_eh_region (gimple, int);
-extern bool remove_stmt_from_eh_region (gimple);
+extern bool stmt_can_throw_external (gimple);
+extern void add_stmt_to_eh_lp_fn (struct function *, gimple, int);
+extern void add_stmt_to_eh_lp (gimple, int);
+extern bool remove_stmt_from_eh_lp (gimple);
+extern bool remove_stmt_from_eh_lp_fn (struct function *, gimple);
+extern int lookup_stmt_eh_lp_fn (struct function *, gimple);
+extern int lookup_stmt_eh_lp (gimple);
+extern bool maybe_clean_eh_stmt_fn (struct function *, gimple);
+extern bool maybe_clean_eh_stmt (gimple);
extern bool maybe_clean_or_replace_eh_stmt (gimple, gimple);
-extern void add_stmt_to_eh_region_fn (struct function *, gimple, int);
-extern bool remove_stmt_from_eh_region_fn (struct function *, gimple);
-extern int lookup_stmt_eh_region_fn (struct function *, gimple);
-extern int lookup_expr_eh_region (tree);
-extern int lookup_stmt_eh_region (gimple);
+extern bool maybe_duplicate_eh_stmt_fn (struct function *, gimple,
+ struct function *, gimple,
+ struct pointer_map_t *, int);
+extern bool maybe_duplicate_eh_stmt (gimple, gimple);
extern bool verify_eh_edges (gimple);
-
+extern bool verify_eh_dispatch_edge (gimple);
/* In tree-ssa-pre.c */
struct pre_expr_d;
void debug_value_expressions (unsigned int);
void print_value_expressions (FILE *, unsigned int);
-
-/* In tree-vn.c */
-tree make_value_handle (tree);
-void set_value_handle (tree, tree);
-bool expressions_equal_p (tree, tree);
-void sort_vuses (VEC (tree, gc) *);
-void sort_vuses_heap (VEC (tree, heap) *);
-tree vn_lookup_or_add (tree);
-tree vn_lookup_or_add_with_stmt (tree, gimple);
-tree vn_lookup_or_add_with_vuses (tree, VEC (tree, gc) *);
-void vn_add (tree, tree);
-void vn_add_with_vuses (tree, tree, VEC (tree, gc) *);
-tree vn_lookup_with_stmt (tree, gimple);
-tree vn_lookup (tree);
-tree vn_lookup_with_vuses (tree, VEC (tree, gc) *);
-
/* In tree-ssa-sink.c */
bool is_hidden_global_store (gimple);
-/* In tree-sra.c */
-void insert_edge_copies_seq (gimple_seq, basic_block);
-void sra_insert_before (gimple_stmt_iterator *, gimple_seq);
-void sra_insert_after (gimple_stmt_iterator *, gimple_seq);
-void sra_init_cache (void);
-bool sra_type_can_be_decomposed_p (tree);
-
/* In tree-loop-linear.c */
extern void linear_transform_loops (void);
extern unsigned perfect_loop_nest_depth (struct loop *);
/* In tree-ssa-loop-ivopts.c */
bool expr_invariant_in_loop_p (struct loop *, tree);
bool stmt_invariant_in_loop_p (struct loop *, gimple);
-bool multiplier_allowed_in_address_p (HOST_WIDE_INT, enum machine_mode);
+bool multiplier_allowed_in_address_p (HOST_WIDE_INT, enum machine_mode,
+ addr_space_t);
unsigned multiply_by_cost (HOST_WIDE_INT, enum machine_mode, bool);
/* In tree-ssa-threadupdate.c. */
bool, enum gsi_iterator_update);
tree gimple_fold_indirect_ref (tree);
-/* In tree-ssa-structalias.c */
-bool find_what_p_points_to (tree);
-bool clobber_what_escaped (void);
-void compute_call_used_vars (void);
-
/* In tree-ssa-live.c */
extern void remove_unused_locals (void);
+extern void dump_scope_blocks (FILE *, int);
+extern void debug_scope_blocks (int);
+extern void debug_scope_block (tree, int);
/* In tree-ssa-address.c */
};
struct affine_tree_combination;
-tree create_mem_ref (gimple_stmt_iterator *, tree,
- struct affine_tree_combination *, bool);
-rtx addr_for_mem_ref (struct mem_address *, bool);
+tree create_mem_ref (gimple_stmt_iterator *, tree,
+ struct affine_tree_combination *, tree, bool);
+rtx addr_for_mem_ref (struct mem_address *, addr_space_t, bool);
void get_address_description (tree, struct mem_address *);
tree maybe_fold_tmr (tree);
-void init_alias_heapvars (void);
-void delete_alias_heapvars (void);
+unsigned int execute_free_datastructures (void);
unsigned int execute_fixup_cfg (void);
#include "tree-flow-inline.h"
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