| /* Structure for saving state for a nested function. |
| Copyright (C) 1989-2017 Free Software Foundation, Inc. |
| |
| This file is part of GCC. |
| |
| GCC is free software; you can redistribute it and/or modify it under |
| the terms of the GNU General Public License as published by the Free |
| Software Foundation; either version 3, or (at your option) any later |
| version. |
| |
| GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
| WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GCC; see the file COPYING3. If not see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef GCC_FUNCTION_H |
| #define GCC_FUNCTION_H |
| |
| |
| /* Stack of pending (incomplete) sequences saved by `start_sequence'. |
| Each element describes one pending sequence. |
| The main insn-chain is saved in the last element of the chain, |
| unless the chain is empty. */ |
| |
| struct GTY(()) sequence_stack { |
| /* First and last insns in the chain of the saved sequence. */ |
| rtx_insn *first; |
| rtx_insn *last; |
| struct sequence_stack *next; |
| }; |
| |
| struct GTY(()) emit_status { |
| void ensure_regno_capacity (); |
| |
| /* This is reset to LAST_VIRTUAL_REGISTER + 1 at the start of each function. |
| After rtl generation, it is 1 plus the largest register number used. */ |
| int x_reg_rtx_no; |
| |
| /* Lowest label number in current function. */ |
| int x_first_label_num; |
| |
| /* seq.first and seq.last are the ends of the doubly-linked chain of |
| rtl for the current function. Both are reset to null at the |
| start of rtl generation for the function. |
| |
| start_sequence saves both of these on seq.next and then starts |
| a new, nested sequence of insns. |
| |
| seq.next is a stack of pending (incomplete) sequences saved by |
| start_sequence. Each element describes one pending sequence. |
| The main insn-chain is the last element of the chain. */ |
| struct sequence_stack seq; |
| |
| /* INSN_UID for next insn emitted. |
| Reset to 1 for each function compiled. */ |
| int x_cur_insn_uid; |
| |
| /* INSN_UID for next debug insn emitted. Only used if |
| --param min-nondebug-insn-uid=<value> is given with nonzero value. */ |
| int x_cur_debug_insn_uid; |
| |
| /* The length of the regno_pointer_align, regno_decl, and x_regno_reg_rtx |
| vectors. Since these vectors are needed during the expansion phase when |
| the total number of registers in the function is not yet known, the |
| vectors are copied and made bigger when necessary. */ |
| int regno_pointer_align_length; |
| |
| /* Indexed by pseudo register number, if nonzero gives the known alignment |
| for that pseudo (if REG_POINTER is set in x_regno_reg_rtx). |
| Allocated in parallel with x_regno_reg_rtx. */ |
| unsigned char * GTY((skip)) regno_pointer_align; |
| }; |
| |
| |
| /* Indexed by register number, gives an rtx for that register (and only |
| that register). For pseudo registers, it is the unique rtx for |
| that pseudo. For hard registers, it is an rtx of the mode specified |
| by reg_raw_mode. |
| |
| FIXME: We could put it into emit_status struct, but gengtype is not |
| able to deal with length attribute nested in top level structures. */ |
| |
| extern GTY ((length ("crtl->emit.x_reg_rtx_no"))) rtx * regno_reg_rtx; |
| |
| /* For backward compatibility... eventually these should all go away. */ |
| #define reg_rtx_no (crtl->emit.x_reg_rtx_no) |
| |
| #define REGNO_POINTER_ALIGN(REGNO) (crtl->emit.regno_pointer_align[REGNO]) |
| |
| struct GTY(()) expr_status { |
| /* Number of units that we should eventually pop off the stack. |
| These are the arguments to function calls that have already returned. */ |
| int x_pending_stack_adjust; |
| |
| /* Under some ABIs, it is the caller's responsibility to pop arguments |
| pushed for function calls. A naive implementation would simply pop |
| the arguments immediately after each call. However, if several |
| function calls are made in a row, it is typically cheaper to pop |
| all the arguments after all of the calls are complete since a |
| single pop instruction can be used. Therefore, GCC attempts to |
| defer popping the arguments until absolutely necessary. (For |
| example, at the end of a conditional, the arguments must be popped, |
| since code outside the conditional won't know whether or not the |
| arguments need to be popped.) |
| |
| When INHIBIT_DEFER_POP is nonzero, however, the compiler does not |
| attempt to defer pops. Instead, the stack is popped immediately |
| after each call. Rather then setting this variable directly, use |
| NO_DEFER_POP and OK_DEFER_POP. */ |
| int x_inhibit_defer_pop; |
| |
| /* If PREFERRED_STACK_BOUNDARY and PUSH_ROUNDING are defined, the stack |
| boundary can be momentarily unaligned while pushing the arguments. |
| Record the delta since last aligned boundary here in order to get |
| stack alignment in the nested function calls working right. */ |
| int x_stack_pointer_delta; |
| |
| /* Nonzero means __builtin_saveregs has already been done in this function. |
| The value is the pseudoreg containing the value __builtin_saveregs |
| returned. */ |
| rtx x_saveregs_value; |
| |
| /* Similarly for __builtin_apply_args. */ |
| rtx x_apply_args_value; |
| |
| /* List of labels that must never be deleted. */ |
| vec<rtx_insn *, va_gc> *x_forced_labels; |
| }; |
| |
| typedef struct call_site_record_d *call_site_record; |
| |
| /* RTL representation of exception handling. */ |
| struct GTY(()) rtl_eh { |
| rtx ehr_stackadj; |
| rtx ehr_handler; |
| rtx_code_label *ehr_label; |
| |
| rtx sjlj_fc; |
| rtx_insn *sjlj_exit_after; |
| |
| vec<uchar, va_gc> *action_record_data; |
| |
| vec<call_site_record, va_gc> *call_site_record_v[2]; |
| }; |
| |
| #define pending_stack_adjust (crtl->expr.x_pending_stack_adjust) |
| #define inhibit_defer_pop (crtl->expr.x_inhibit_defer_pop) |
| #define saveregs_value (crtl->expr.x_saveregs_value) |
| #define apply_args_value (crtl->expr.x_apply_args_value) |
| #define forced_labels (crtl->expr.x_forced_labels) |
| #define stack_pointer_delta (crtl->expr.x_stack_pointer_delta) |
| |
| struct gimple_df; |
| struct call_site_record_d; |
| struct dw_fde_node; |
| |
| struct GTY(()) varasm_status { |
| /* If we're using a per-function constant pool, this is it. */ |
| struct rtx_constant_pool *pool; |
| |
| /* Number of tree-constants deferred during the expansion of this |
| function. */ |
| unsigned int deferred_constants; |
| }; |
| |
| |
| /* Data for function partitioning. */ |
| struct GTY(()) function_subsections { |
| /* Assembly labels for the hot and cold text sections, to |
| be used by debugger functions for determining the size of text |
| sections. */ |
| |
| const char *hot_section_label; |
| const char *cold_section_label; |
| const char *hot_section_end_label; |
| const char *cold_section_end_label; |
| }; |
| |
| /* Describe an empty area of space in the stack frame. These can be chained |
| into a list; this is used to keep track of space wasted for alignment |
| reasons. */ |
| struct GTY(()) frame_space |
| { |
| struct frame_space *next; |
| |
| HOST_WIDE_INT start; |
| HOST_WIDE_INT length; |
| }; |
| |
| struct GTY(()) stack_usage |
| { |
| /* # of bytes of static stack space allocated by the function. */ |
| HOST_WIDE_INT static_stack_size; |
| |
| /* # of bytes of dynamic stack space allocated by the function. This is |
| meaningful only if has_unbounded_dynamic_stack_size is zero. */ |
| HOST_WIDE_INT dynamic_stack_size; |
| |
| /* # of bytes of space pushed onto the stack after the prologue. If |
| !ACCUMULATE_OUTGOING_ARGS, it contains the outgoing arguments. */ |
| int pushed_stack_size; |
| |
| /* Nonzero if the amount of stack space allocated dynamically cannot |
| be bounded at compile-time. */ |
| unsigned int has_unbounded_dynamic_stack_size : 1; |
| }; |
| |
| #define current_function_static_stack_size (cfun->su->static_stack_size) |
| #define current_function_dynamic_stack_size (cfun->su->dynamic_stack_size) |
| #define current_function_pushed_stack_size (cfun->su->pushed_stack_size) |
| #define current_function_has_unbounded_dynamic_stack_size \ |
| (cfun->su->has_unbounded_dynamic_stack_size) |
| #define current_function_allocates_dynamic_stack_space \ |
| (current_function_dynamic_stack_size != 0 \ |
| || current_function_has_unbounded_dynamic_stack_size) |
| |
| /* This structure can save all the important global and static variables |
| describing the status of the current function. */ |
| |
| struct GTY(()) function { |
| struct eh_status *eh; |
| |
| /* The control flow graph for this function. */ |
| struct control_flow_graph *cfg; |
| |
| /* GIMPLE body for this function. */ |
| gimple_seq gimple_body; |
| |
| /* SSA and dataflow information. */ |
| struct gimple_df *gimple_df; |
| |
| /* The loops in this function. */ |
| struct loops *x_current_loops; |
| |
| /* Filled by the GIMPLE and RTL FEs, pass to start compilation with. */ |
| char *pass_startwith; |
| |
| /* The stack usage of this function. */ |
| struct stack_usage *su; |
| |
| /* Value histograms attached to particular statements. */ |
| htab_t GTY((skip)) value_histograms; |
| |
| /* For function.c. */ |
| |
| /* Points to the FUNCTION_DECL of this function. */ |
| tree decl; |
| |
| /* A PARM_DECL that should contain the static chain for this function. |
| It will be initialized at the beginning of the function. */ |
| tree static_chain_decl; |
| |
| /* An expression that contains the non-local goto save area. The first |
| word is the saved frame pointer and the second is the saved stack |
| pointer. */ |
| tree nonlocal_goto_save_area; |
| |
| /* Vector of function local variables, functions, types and constants. */ |
| vec<tree, va_gc> *local_decls; |
| |
| /* In a Cilk function, the VAR_DECL for the frame descriptor. */ |
| tree cilk_frame_decl; |
| |
| /* For md files. */ |
| |
| /* tm.h can use this to store whatever it likes. */ |
| struct machine_function * GTY ((maybe_undef)) machine; |
| |
| /* Language-specific code can use this to store whatever it likes. */ |
| struct language_function * language; |
| |
| /* Used types hash table. */ |
| hash_set<tree> *GTY (()) used_types_hash; |
| |
| /* Dwarf2 Frame Description Entry, containing the Call Frame Instructions |
| used for unwinding. Only set when either dwarf2 unwinding or dwarf2 |
| debugging is enabled. */ |
| struct dw_fde_node *fde; |
| |
| /* Last statement uid. */ |
| int last_stmt_uid; |
| |
| /* Function sequence number for profiling, debugging, etc. */ |
| int funcdef_no; |
| |
| /* Line number of the start of the function for debugging purposes. */ |
| location_t function_start_locus; |
| |
| /* Line number of the end of the function. */ |
| location_t function_end_locus; |
| |
| /* Properties used by the pass manager. */ |
| unsigned int curr_properties; |
| unsigned int last_verified; |
| |
| /* Non-null if the function does something that would prevent it from |
| being copied; this applies to both versioning and inlining. Set to |
| a string describing the reason for failure. */ |
| const char * GTY((skip)) cannot_be_copied_reason; |
| |
| /* Last assigned dependence info clique. */ |
| unsigned short last_clique; |
| |
| /* Collected bit flags. */ |
| |
| /* Number of units of general registers that need saving in stdarg |
| function. What unit is depends on the backend, either it is number |
| of bytes, or it can be number of registers. */ |
| unsigned int va_list_gpr_size : 8; |
| |
| /* Number of units of floating point registers that need saving in stdarg |
| function. */ |
| unsigned int va_list_fpr_size : 8; |
| |
| /* Nonzero if function being compiled can call setjmp. */ |
| unsigned int calls_setjmp : 1; |
| |
| /* Nonzero if function being compiled can call alloca, |
| either as a subroutine or builtin. */ |
| unsigned int calls_alloca : 1; |
| |
| /* This will indicate whether a function is a cilk function */ |
| unsigned int is_cilk_function : 1; |
| |
| /* Nonzero if this is a Cilk function that spawns. */ |
| unsigned int calls_cilk_spawn : 1; |
| |
| /* Nonzero if function being compiled receives nonlocal gotos |
| from nested functions. */ |
| unsigned int has_nonlocal_label : 1; |
| |
| /* Nonzero if function being compiled has a forced label |
| placed into static storage. */ |
| unsigned int has_forced_label_in_static : 1; |
| |
| /* Nonzero if we've set cannot_be_copied_reason. I.e. if |
| (cannot_be_copied_set && !cannot_be_copied_reason), the function |
| can in fact be copied. */ |
| unsigned int cannot_be_copied_set : 1; |
| |
| /* Nonzero if current function uses stdarg.h or equivalent. */ |
| unsigned int stdarg : 1; |
| |
| unsigned int after_inlining : 1; |
| unsigned int always_inline_functions_inlined : 1; |
| |
| /* Nonzero if function being compiled can throw synchronous non-call |
| exceptions. */ |
| unsigned int can_throw_non_call_exceptions : 1; |
| |
| /* Nonzero if instructions that may throw exceptions but don't otherwise |
| contribute to the execution of the program can be deleted. */ |
| unsigned int can_delete_dead_exceptions : 1; |
| |
| /* Fields below this point are not set for abstract functions; see |
| allocate_struct_function. */ |
| |
| /* Nonzero if function being compiled needs to be given an address |
| where the value should be stored. */ |
| unsigned int returns_struct : 1; |
| |
| /* Nonzero if function being compiled needs to |
| return the address of where it has put a structure value. */ |
| unsigned int returns_pcc_struct : 1; |
| |
| /* Nonzero if this function has local DECL_HARD_REGISTER variables. |
| In this case code motion has to be done more carefully. */ |
| unsigned int has_local_explicit_reg_vars : 1; |
| |
| /* Nonzero if the current function is a thunk, i.e., a lightweight |
| function implemented by the output_mi_thunk hook) that just |
| adjusts one of its arguments and forwards to another |
| function. */ |
| unsigned int is_thunk : 1; |
| |
| /* Nonzero if the current function contains any loops with |
| loop->force_vectorize set. */ |
| unsigned int has_force_vectorize_loops : 1; |
| |
| /* Nonzero if the current function contains any loops with |
| nonzero value in loop->simduid. */ |
| unsigned int has_simduid_loops : 1; |
| |
| /* Nonzero when the tail call has been identified. */ |
| unsigned int tail_call_marked : 1; |
| |
| /* Nonzero if the current function contains a #pragma GCC unroll. */ |
| unsigned int has_unroll : 1; |
| }; |
| |
| /* Add the decl D to the local_decls list of FUN. */ |
| |
| void add_local_decl (struct function *fun, tree d); |
| |
| #define FOR_EACH_LOCAL_DECL(FUN, I, D) \ |
| FOR_EACH_VEC_SAFE_ELT_REVERSE ((FUN)->local_decls, I, D) |
| |
| /* If va_list_[gf]pr_size is set to this, it means we don't know how |
| many units need to be saved. */ |
| #define VA_LIST_MAX_GPR_SIZE 255 |
| #define VA_LIST_MAX_FPR_SIZE 255 |
| |
| /* The function currently being compiled. */ |
| extern GTY(()) struct function *cfun; |
| |
| /* In order to ensure that cfun is not set directly, we redefine it so |
| that it is not an lvalue. Rather than assign to cfun, use |
| push_cfun or set_cfun. */ |
| #define cfun (cfun + 0) |
| |
| /* Nonzero if we've already converted virtual regs to hard regs. */ |
| extern int virtuals_instantiated; |
| |
| /* Nonzero if at least one trampoline has been created. */ |
| extern int trampolines_created; |
| |
| struct GTY((for_user)) types_used_by_vars_entry { |
| tree type; |
| tree var_decl; |
| }; |
| |
| struct used_type_hasher : ggc_ptr_hash<types_used_by_vars_entry> |
| { |
| static hashval_t hash (types_used_by_vars_entry *); |
| static bool equal (types_used_by_vars_entry *, types_used_by_vars_entry *); |
| }; |
| |
| /* Hash table making the relationship between a global variable |
| and the types it references in its initializer. The key of the |
| entry is a referenced type, and the value is the DECL of the global |
| variable. types_use_by_vars_do_hash and types_used_by_vars_eq below are |
| the hash and equality functions to use for this hash table. */ |
| extern GTY(()) hash_table<used_type_hasher> *types_used_by_vars_hash; |
| |
| void types_used_by_var_decl_insert (tree type, tree var_decl); |
| |
| /* During parsing of a global variable, this vector contains the types |
| referenced by the global variable. */ |
| extern GTY(()) vec<tree, va_gc> *types_used_by_cur_var_decl; |
| |
| |
| /* Return the loop tree of FN. */ |
| |
| inline struct loops * |
| loops_for_fn (struct function *fn) |
| { |
| return fn->x_current_loops; |
| } |
| |
| /* Set the loop tree of FN to LOOPS. */ |
| |
| inline void |
| set_loops_for_fn (struct function *fn, struct loops *loops) |
| { |
| gcc_checking_assert (fn->x_current_loops == NULL || loops == NULL); |
| fn->x_current_loops = loops; |
| } |
| |
| /* For backward compatibility... eventually these should all go away. */ |
| #define current_function_funcdef_no (cfun->funcdef_no) |
| |
| #define current_loops (cfun->x_current_loops) |
| #define dom_computed (cfun->cfg->x_dom_computed) |
| #define n_bbs_in_dom_tree (cfun->cfg->x_n_bbs_in_dom_tree) |
| #define VALUE_HISTOGRAMS(fun) (fun)->value_histograms |
| |
| /* A pointer to a function to create target specific, per-function |
| data structures. */ |
| extern struct machine_function * (*init_machine_status) (void); |
| |
| /* 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. */ |
| pad_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 |
| |
| /* If pointers to member functions use the least significant bit to |
| indicate whether a function is virtual, ensure a pointer |
| to this function will have that bit clear. */ |
| #define MINIMUM_METHOD_BOUNDARY \ |
| ((TARGET_PTRMEMFUNC_VBIT_LOCATION == ptrmemfunc_vbit_in_pfn) \ |
| ? MAX (FUNCTION_BOUNDARY, 2 * BITS_PER_UNIT) : FUNCTION_BOUNDARY) |
| |
| enum stack_clash_probes { |
| NO_PROBE_NO_FRAME, |
| NO_PROBE_SMALL_FRAME, |
| PROBE_INLINE, |
| PROBE_LOOP |
| }; |
| |
| extern void dump_stack_clash_frame_info (enum stack_clash_probes, bool); |
| |
| |
| 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; |
| the caller may have to do that. */ |
| extern HOST_WIDE_INT get_frame_size (void); |
| |
| /* Issue an error message and return TRUE if frame OFFSET overflows in |
| the signed target pointer arithmetics for function FUNC. Otherwise |
| return FALSE. */ |
| extern bool frame_offset_overflow (HOST_WIDE_INT, tree); |
| |
| extern unsigned int spill_slot_alignment (machine_mode); |
| |
| extern rtx assign_stack_local_1 (machine_mode, HOST_WIDE_INT, int, int); |
| extern rtx assign_stack_local (machine_mode, HOST_WIDE_INT, int); |
| extern rtx assign_stack_temp_for_type (machine_mode, HOST_WIDE_INT, tree); |
| extern rtx assign_stack_temp (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 (machine_mode, unsigned int); |
| extern rtx has_hard_reg_initial_val (machine_mode, unsigned int); |
| |
| /* 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 gimple_seq gimplify_parameters (void); |
| extern void locate_and_pad_parm (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); |
| |
| /* 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, bool force = false); |
| 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 push_dummy_function (bool); |
| extern void pop_dummy_function (void); |
| 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); |
| |
| extern void thread_prologue_and_epilogue_insns (void); |
| extern void diddle_return_value (void (*)(rtx, void*), void*); |
| extern void clobber_return_register (void); |
| 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_contains (const rtx_insn *); |
| extern int epilogue_contains (const rtx_insn *); |
| extern int prologue_epilogue_contains (const rtx_insn *); |
| extern void record_prologue_seq (rtx_insn *); |
| extern void record_epilogue_seq (rtx_insn *); |
| extern void emit_return_into_block (bool simple_p, basic_block bb); |
| extern void set_return_jump_label (rtx_insn *); |
| 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 used_types_insert (tree); |
| |
| #endif /* GCC_FUNCTION_H */ |