diff options
Diffstat (limited to 'gcc/function.h')
| -rw-r--r-- | gcc/function.h | 223 |
1 files changed, 153 insertions, 70 deletions
diff --git a/gcc/function.h b/gcc/function.h index a8d9f6a5135..66384e5323d 100644 --- a/gcc/function.h +++ b/gcc/function.h @@ -20,13 +20,6 @@ along with GCC; see the file COPYING3. If not see #ifndef GCC_FUNCTION_H #define GCC_FUNCTION_H -#include "hashtab.h" -#include "hash-set.h" -#include "vec.h" -#include "machmode.h" -#include "tm.h" /* For CUMULATIVE_ARGS. */ -#include "hard-reg-set.h" /* For HARD_REG_SET in struct rtl_data. */ -#include "input.h" /* For location_t. */ /* Stack of pending (incomplete) sequences saved by `start_sequence'. Each element describes one pending sequence. @@ -727,11 +720,6 @@ void types_used_by_var_decl_insert (tree type, tree var_decl); referenced by the global variable. */ extern GTY(()) vec<tree, va_gc> *types_used_by_cur_var_decl; -/* cfun shouldn't be set directly; use one of these functions instead. */ -extern void set_cfun (struct function *new_cfun); -extern void push_cfun (struct function *new_cfun); -extern void pop_cfun (void); -extern void instantiate_decl_rtl (rtx x); /* Return the loop tree of FN. */ @@ -758,16 +746,95 @@ set_loops_for_fn (struct function *fn, struct loops *loops) #define n_bbs_in_dom_tree (cfun->cfg->x_n_bbs_in_dom_tree) #define VALUE_HISTOGRAMS(fun) (fun)->value_histograms -/* Identify BLOCKs referenced by more than one NOTE_INSN_BLOCK_{BEG,END}, - and create duplicate blocks. */ -extern void reorder_blocks (void); +/* A pointer to a function to create target specific, per-function + data structures. */ +extern struct machine_function * (*init_machine_status) (void); -/* Set BLOCK_NUMBER for all the blocks in FN. */ -extern void number_blocks (tree); +enum direction {none, upward, downward}; -extern void clear_block_marks (tree); -extern tree blocks_nreverse (tree); -extern tree block_chainon (tree, tree); +/* Structure to record the size of a sequence of arguments + as the sum of a tree-expression and a constant. This structure is + also used to store offsets from the stack, which might be negative, + so the variable part must be ssizetype, not sizetype. */ + +struct args_size +{ + HOST_WIDE_INT constant; + tree var; +}; + +/* Package up various arg related fields of struct args for + locate_and_pad_parm. */ +struct locate_and_pad_arg_data +{ + /* Size of this argument on the stack, rounded up for any padding it + gets. If REG_PARM_STACK_SPACE is defined, then register parms are + counted here, otherwise they aren't. */ + struct args_size size; + /* Offset of this argument from beginning of stack-args. */ + struct args_size offset; + /* Offset to the start of the stack slot. Different from OFFSET + if this arg pads downward. */ + struct args_size slot_offset; + /* The amount that the stack pointer needs to be adjusted to + force alignment for the next argument. */ + struct args_size alignment_pad; + /* Which way we should pad this arg. */ + enum direction where_pad; + /* slot_offset is at least this aligned. */ + unsigned int boundary; +}; + +/* Add the value of the tree INC to the `struct args_size' TO. */ + +#define ADD_PARM_SIZE(TO, INC) \ +do { \ + tree inc = (INC); \ + if (tree_fits_shwi_p (inc)) \ + (TO).constant += tree_to_shwi (inc); \ + else if ((TO).var == 0) \ + (TO).var = fold_convert (ssizetype, inc); \ + else \ + (TO).var = size_binop (PLUS_EXPR, (TO).var, \ + fold_convert (ssizetype, inc)); \ +} while (0) + +#define SUB_PARM_SIZE(TO, DEC) \ +do { \ + tree dec = (DEC); \ + if (tree_fits_shwi_p (dec)) \ + (TO).constant -= tree_to_shwi (dec); \ + else if ((TO).var == 0) \ + (TO).var = size_binop (MINUS_EXPR, ssize_int (0), \ + fold_convert (ssizetype, dec)); \ + else \ + (TO).var = size_binop (MINUS_EXPR, (TO).var, \ + fold_convert (ssizetype, dec)); \ +} while (0) + +/* Convert the implicit sum in a `struct args_size' into a tree + of type ssizetype. */ +#define ARGS_SIZE_TREE(SIZE) \ +((SIZE).var == 0 ? ssize_int ((SIZE).constant) \ + : size_binop (PLUS_EXPR, fold_convert (ssizetype, (SIZE).var), \ + ssize_int ((SIZE).constant))) + +/* Convert the implicit sum in a `struct args_size' into an rtx. */ +#define ARGS_SIZE_RTX(SIZE) \ +((SIZE).var == 0 ? GEN_INT ((SIZE).constant) \ + : expand_normal (ARGS_SIZE_TREE (SIZE))) + +#define ASLK_REDUCE_ALIGN 1 +#define ASLK_RECORD_PAD 2 + + + +extern void push_function_context (void); +extern void pop_function_context (void); + +/* Save and restore status information for a nested function. */ +extern void free_after_parsing (struct function *); +extern void free_after_compilation (struct function *); /* Return size needed for stack frame based on slots so far allocated. This size counts from zero. It is not rounded to STACK_BOUNDARY; @@ -779,71 +846,87 @@ extern HOST_WIDE_INT get_frame_size (void); return FALSE. */ extern bool frame_offset_overflow (HOST_WIDE_INT, tree); -/* A pointer to a function to create target specific, per-function - data structures. */ -extern struct machine_function * (*init_machine_status) (void); +extern rtx assign_stack_local_1 (enum machine_mode, HOST_WIDE_INT, int, int); +extern rtx assign_stack_local (enum machine_mode, HOST_WIDE_INT, int); +extern rtx assign_stack_temp_for_type (enum machine_mode, HOST_WIDE_INT, tree); +extern rtx assign_stack_temp (enum machine_mode, HOST_WIDE_INT); +extern rtx assign_temp (tree, int, int); +extern void update_temp_slot_address (rtx, rtx); +extern void preserve_temp_slots (rtx); +extern void free_temp_slots (void); +extern void push_temp_slots (void); +extern void pop_temp_slots (void); +extern void init_temp_slots (void); +extern rtx get_hard_reg_initial_reg (rtx); +extern rtx get_hard_reg_initial_val (enum machine_mode, unsigned int); +extern rtx has_hard_reg_initial_val (enum machine_mode, unsigned int); -/* Save and restore status information for a nested function. */ -extern void free_after_parsing (struct function *); -extern void free_after_compilation (struct function *); +/* Called from gimple_expand_cfg. */ +extern unsigned int emit_initial_value_sets (void); + +extern bool initial_value_entry (int i, rtx *, rtx *); +extern void instantiate_decl_rtl (rtx x); +extern int aggregate_value_p (const_tree, const_tree); +extern bool use_register_for_decl (const_tree); +extern bool pass_by_reference (CUMULATIVE_ARGS *, enum machine_mode, + tree, bool); +extern bool reference_callee_copied (CUMULATIVE_ARGS *, enum machine_mode, + tree, bool); +extern gimple_seq gimplify_parameters (void); +extern void locate_and_pad_parm (enum machine_mode, tree, int, int, int, + tree, struct args_size *, + struct locate_and_pad_arg_data *); +extern void generate_setjmp_warnings (void); + +/* Identify BLOCKs referenced by more than one NOTE_INSN_BLOCK_{BEG,END}, + and create duplicate blocks. */ +extern void reorder_blocks (void); +extern void clear_block_marks (tree); +extern tree blocks_nreverse (tree); +extern tree block_chainon (tree, tree); -extern void init_varasm_status (void); +/* Set BLOCK_NUMBER for all the blocks in FN. */ +extern void number_blocks (tree); + +/* cfun shouldn't be set directly; use one of these functions instead. */ +extern void set_cfun (struct function *new_cfun); +extern void push_cfun (struct function *new_cfun); +extern void pop_cfun (void); + +extern int get_next_funcdef_no (void); +extern int get_last_funcdef_no (void); +extern void allocate_struct_function (tree, bool); +extern void push_struct_function (tree fndecl); +extern void init_dummy_function_start (void); +extern void init_function_start (tree); +extern void stack_protect_epilogue (void); +extern void expand_function_start (tree); +extern void expand_dummy_function_end (void); #ifdef RTX_CODE extern void diddle_return_value (void (*)(rtx, void*), void*); extern void clobber_return_register (void); #endif +extern void do_warn_unused_parameter (tree); +extern void expand_function_end (void); extern rtx get_arg_pointer_save_area (void); +extern void maybe_copy_prologue_epilogue_insn (rtx, rtx); +extern int prologue_epilogue_contains (const_rtx); +extern void emit_return_into_block (bool simple_p, basic_block bb); +extern void set_return_jump_label (rtx); +extern bool active_insn_between (rtx_insn *head, rtx_insn *tail); +extern vec<edge> convert_jumps_to_returns (basic_block last_bb, bool simple_p, + vec<edge> unconverted); +extern basic_block emit_return_for_exit (edge exit_fallthru_edge, + bool simple_p); +extern void reposition_prologue_and_epilogue_notes (void); /* Returns the name of the current function. */ extern const char *fndecl_name (tree); extern const char *function_name (struct function *); extern const char *current_function_name (void); -extern void do_warn_unused_parameter (tree); - -extern bool pass_by_reference (CUMULATIVE_ARGS *, enum machine_mode, - tree, bool); -extern bool reference_callee_copied (CUMULATIVE_ARGS *, enum machine_mode, - tree, bool); - extern void used_types_insert (tree); -extern int get_next_funcdef_no (void); -extern int get_last_funcdef_no (void); - -extern rtx get_hard_reg_initial_val (enum machine_mode, unsigned int); -extern rtx has_hard_reg_initial_val (enum machine_mode, unsigned int); -extern rtx get_hard_reg_initial_reg (rtx); -extern bool initial_value_entry (int i, rtx *, rtx *); - -/* Called from gimple_expand_cfg. */ -extern unsigned int emit_initial_value_sets (void); - -/* In predict.c */ -extern bool optimize_function_for_size_p (struct function *); -extern bool optimize_function_for_speed_p (struct function *); - -/* In function.c */ -extern void expand_function_end (void); -extern void expand_function_start (tree); -extern void stack_protect_epilogue (void); -extern void init_dummy_function_start (void); -extern void expand_dummy_function_end (void); -extern void allocate_struct_function (tree, bool); -extern void push_struct_function (tree fndecl); -extern void init_function_start (tree); -extern bool use_register_for_decl (const_tree); -extern void generate_setjmp_warnings (void); -extern void init_temp_slots (void); -extern void free_temp_slots (void); -extern void pop_temp_slots (void); -extern void push_temp_slots (void); -extern void preserve_temp_slots (rtx); -extern int aggregate_value_p (const_tree, const_tree); -extern void push_function_context (void); -extern void pop_function_context (void); -extern gimple_seq gimplify_parameters (void); - #endif /* GCC_FUNCTION_H */ |