diff options
Diffstat (limited to 'gcc/flow.c')
| -rw-r--r-- | gcc/flow.c | 160 |
1 files changed, 80 insertions, 80 deletions
@@ -1,5 +1,5 @@ /* Data flow analysis for GNU compiler. - Copyright (C) 1987, 88, 92-98, 1999 Free Software Foundation, Inc. + Copyright (C) 1987, 88, 92-99, 2000 Free Software Foundation, Inc. This file is part of GNU CC. @@ -280,92 +280,92 @@ static rtx label_value_list; static bitmap uid_volatile; /* Forward declarations */ -static int count_basic_blocks PROTO((rtx)); -static rtx find_basic_blocks_1 PROTO((rtx)); -static void create_basic_block PROTO((int, rtx, rtx, rtx)); -static void clear_edges PROTO((void)); -static void make_edges PROTO((rtx)); -static void make_edge PROTO((sbitmap *, basic_block, - basic_block, int)); -static void make_label_edge PROTO((sbitmap *, basic_block, - rtx, int)); -static void make_eh_edge PROTO((sbitmap *, eh_nesting_info *, - basic_block, rtx, int)); -static void mark_critical_edges PROTO((void)); -static void move_stray_eh_region_notes PROTO((void)); -static void record_active_eh_regions PROTO((rtx)); - -static void commit_one_edge_insertion PROTO((edge)); - -static void delete_unreachable_blocks PROTO((void)); -static void delete_eh_regions PROTO((void)); -static int can_delete_note_p PROTO((rtx)); -static int delete_block PROTO((basic_block)); -static void expunge_block PROTO((basic_block)); -static rtx flow_delete_insn PROTO((rtx)); -static int can_delete_label_p PROTO((rtx)); -static int merge_blocks_move_predecessor_nojumps PROTO((basic_block, +static int count_basic_blocks PARAMS ((rtx)); +static rtx find_basic_blocks_1 PARAMS ((rtx)); +static void create_basic_block PARAMS ((int, rtx, rtx, rtx)); +static void clear_edges PARAMS ((void)); +static void make_edges PARAMS ((rtx)); +static void make_edge PARAMS ((sbitmap *, basic_block, + basic_block, int)); +static void make_label_edge PARAMS ((sbitmap *, basic_block, + rtx, int)); +static void make_eh_edge PARAMS ((sbitmap *, eh_nesting_info *, + basic_block, rtx, int)); +static void mark_critical_edges PARAMS ((void)); +static void move_stray_eh_region_notes PARAMS ((void)); +static void record_active_eh_regions PARAMS ((rtx)); + +static void commit_one_edge_insertion PARAMS ((edge)); + +static void delete_unreachable_blocks PARAMS ((void)); +static void delete_eh_regions PARAMS ((void)); +static int can_delete_note_p PARAMS ((rtx)); +static int delete_block PARAMS ((basic_block)); +static void expunge_block PARAMS ((basic_block)); +static rtx flow_delete_insn PARAMS ((rtx)); +static int can_delete_label_p PARAMS ((rtx)); +static int merge_blocks_move_predecessor_nojumps PARAMS ((basic_block, + basic_block)); +static int merge_blocks_move_successor_nojumps PARAMS ((basic_block, basic_block)); -static int merge_blocks_move_successor_nojumps PROTO((basic_block, - basic_block)); -static void merge_blocks_nomove PROTO((basic_block, basic_block)); -static int merge_blocks PROTO((edge,basic_block,basic_block)); -static void try_merge_blocks PROTO((void)); -static void tidy_fallthru_edge PROTO((edge,basic_block,basic_block)); - -static int verify_wide_reg_1 PROTO((rtx *, void *)); -static void verify_wide_reg PROTO((int, rtx, rtx)); -static void verify_local_live_at_start PROTO((regset, basic_block)); -static int set_noop_p PROTO((rtx)); -static int noop_move_p PROTO((rtx)); -static void notice_stack_pointer_modification PROTO ((rtx, rtx, void *)); -static void record_volatile_insns PROTO((rtx)); -static void mark_reg PROTO((regset, rtx)); -static void mark_regs_live_at_end PROTO((regset)); -static void life_analysis_1 PROTO((rtx, int, int)); -static void calculate_global_regs_live PROTO((sbitmap, sbitmap, int)); -static void propagate_block PROTO((regset, rtx, rtx, - regset, int, int)); -static int insn_dead_p PROTO((rtx, regset, int, rtx)); -static int libcall_dead_p PROTO((rtx, regset, rtx, rtx)); -static void mark_set_regs PROTO((regset, regset, rtx, - rtx, regset, int)); -static void mark_set_1 PROTO((regset, regset, rtx, - rtx, regset, int)); +static void merge_blocks_nomove PARAMS ((basic_block, basic_block)); +static int merge_blocks PARAMS ((edge,basic_block,basic_block)); +static void try_merge_blocks PARAMS ((void)); +static void tidy_fallthru_edge PARAMS ((edge,basic_block,basic_block)); + +static int verify_wide_reg_1 PARAMS ((rtx *, void *)); +static void verify_wide_reg PARAMS ((int, rtx, rtx)); +static void verify_local_live_at_start PARAMS ((regset, basic_block)); +static int set_noop_p PARAMS ((rtx)); +static int noop_move_p PARAMS ((rtx)); +static void notice_stack_pointer_modification PARAMS ((rtx, rtx, void *)); +static void record_volatile_insns PARAMS ((rtx)); +static void mark_reg PARAMS ((regset, rtx)); +static void mark_regs_live_at_end PARAMS ((regset)); +static void life_analysis_1 PARAMS ((rtx, int, int)); +static void calculate_global_regs_live PARAMS ((sbitmap, sbitmap, int)); +static void propagate_block PARAMS ((regset, rtx, rtx, + regset, int, int)); +static int insn_dead_p PARAMS ((rtx, regset, int, rtx)); +static int libcall_dead_p PARAMS ((rtx, regset, rtx, rtx)); +static void mark_set_regs PARAMS ((regset, regset, rtx, + rtx, regset, int)); +static void mark_set_1 PARAMS ((regset, regset, rtx, + rtx, regset, int)); #ifdef AUTO_INC_DEC -static void find_auto_inc PROTO((regset, rtx, rtx)); -static int try_pre_increment_1 PROTO((rtx)); -static int try_pre_increment PROTO((rtx, rtx, HOST_WIDE_INT)); +static void find_auto_inc PARAMS ((regset, rtx, rtx)); +static int try_pre_increment_1 PARAMS ((rtx)); +static int try_pre_increment PARAMS ((rtx, rtx, HOST_WIDE_INT)); #endif -static void mark_used_regs PROTO((regset, regset, rtx, int, rtx)); -void dump_flow_info PROTO((FILE *)); -void debug_flow_info PROTO((void)); -static void dump_edge_info PROTO((FILE *, edge, int)); - -static void count_reg_sets_1 PROTO ((rtx)); -static void count_reg_sets PROTO ((rtx)); -static void count_reg_references PROTO ((rtx)); -static void invalidate_mems_from_autoinc PROTO ((rtx)); -static void remove_edge PROTO ((edge)); -static void remove_fake_successors PROTO ((basic_block)); -static void flow_nodes_print PROTO ((const char *, const sbitmap, FILE *)); -static void flow_exits_print PROTO ((const char *, const edge *, int, FILE *)); -static void flow_loops_cfg_dump PROTO ((const struct loops *, FILE *)); -static int flow_loop_nested_p PROTO ((struct loop *, struct loop *)); -static int flow_loop_exits_find PROTO ((const sbitmap, edge **)); -static int flow_loop_nodes_find PROTO ((basic_block, basic_block, sbitmap)); -static int flow_depth_first_order_compute PROTO ((int *)); -static basic_block flow_loop_pre_header_find PROTO ((basic_block, const sbitmap *)); -static void flow_loop_tree_node_add PROTO ((struct loop *, struct loop *)); -static void flow_loops_tree_build PROTO ((struct loops *)); -static int flow_loop_level_compute PROTO ((struct loop *, int)); -static int flow_loops_level_compute PROTO ((struct loops *)); +static void mark_used_regs PARAMS ((regset, regset, rtx, int, rtx)); +void dump_flow_info PARAMS ((FILE *)); +void debug_flow_info PARAMS ((void)); +static void dump_edge_info PARAMS ((FILE *, edge, int)); + +static void count_reg_sets_1 PARAMS ((rtx)); +static void count_reg_sets PARAMS ((rtx)); +static void count_reg_references PARAMS ((rtx)); +static void invalidate_mems_from_autoinc PARAMS ((rtx)); +static void remove_edge PARAMS ((edge)); +static void remove_fake_successors PARAMS ((basic_block)); +static void flow_nodes_print PARAMS ((const char *, const sbitmap, FILE *)); +static void flow_exits_print PARAMS ((const char *, const edge *, int, FILE *)); +static void flow_loops_cfg_dump PARAMS ((const struct loops *, FILE *)); +static int flow_loop_nested_p PARAMS ((struct loop *, struct loop *)); +static int flow_loop_exits_find PARAMS ((const sbitmap, edge **)); +static int flow_loop_nodes_find PARAMS ((basic_block, basic_block, sbitmap)); +static int flow_depth_first_order_compute PARAMS ((int *)); +static basic_block flow_loop_pre_header_find PARAMS ((basic_block, const sbitmap *)); +static void flow_loop_tree_node_add PARAMS ((struct loop *, struct loop *)); +static void flow_loops_tree_build PARAMS ((struct loops *)); +static int flow_loop_level_compute PARAMS ((struct loop *, int)); +static int flow_loops_level_compute PARAMS ((struct loops *)); /* This function is always defined so it can be called from the debugger, and it is declared extern so we don't get warnings about it being unused. */ -void verify_flow_info PROTO ((void)); -int flow_loop_outside_edge_p PROTO ((const struct loop *, edge)); +void verify_flow_info PARAMS ((void)); +int flow_loop_outside_edge_p PARAMS ((const struct loop *, edge)); /* Find basic blocks of the current function. F is the first insn of the function and NREGS the number of register |