716 lines
25 KiB
C++
716 lines
25 KiB
C++
/* Structure for saving state for a nested function.
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Copyright (C) 1989-2021 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#ifndef GCC_FUNCTION_H
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#define GCC_FUNCTION_H
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/* Stack of pending (incomplete) sequences saved by `start_sequence'.
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Each element describes one pending sequence.
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The main insn-chain is saved in the last element of the chain,
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unless the chain is empty. */
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struct GTY(()) sequence_stack {
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/* First and last insns in the chain of the saved sequence. */
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rtx_insn *first;
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rtx_insn *last;
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struct sequence_stack *next;
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};
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struct GTY(()) emit_status {
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void ensure_regno_capacity ();
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/* This is reset to LAST_VIRTUAL_REGISTER + 1 at the start of each function.
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After rtl generation, it is 1 plus the largest register number used. */
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int x_reg_rtx_no;
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/* Lowest label number in current function. */
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int x_first_label_num;
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/* seq.first and seq.last are the ends of the doubly-linked chain of
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rtl for the current function. Both are reset to null at the
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start of rtl generation for the function.
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start_sequence saves both of these on seq.next and then starts
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a new, nested sequence of insns.
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seq.next is a stack of pending (incomplete) sequences saved by
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start_sequence. Each element describes one pending sequence.
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The main insn-chain is the last element of the chain. */
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struct sequence_stack seq;
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/* INSN_UID for next insn emitted.
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Reset to 1 for each function compiled. */
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int x_cur_insn_uid;
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/* INSN_UID for next debug insn emitted. Only used if
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--param min-nondebug-insn-uid=<value> is given with nonzero value. */
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int x_cur_debug_insn_uid;
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/* The length of the regno_pointer_align, regno_decl, and x_regno_reg_rtx
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vectors. Since these vectors are needed during the expansion phase when
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the total number of registers in the function is not yet known, the
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vectors are copied and made bigger when necessary. */
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int regno_pointer_align_length;
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/* Indexed by pseudo register number, if nonzero gives the known alignment
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for that pseudo (if REG_POINTER is set in x_regno_reg_rtx).
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Allocated in parallel with x_regno_reg_rtx. */
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unsigned char * GTY((skip)) regno_pointer_align;
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};
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/* Indexed by register number, gives an rtx for that register (and only
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that register). For pseudo registers, it is the unique rtx for
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that pseudo. For hard registers, it is an rtx of the mode specified
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by reg_raw_mode.
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FIXME: We could put it into emit_status struct, but gengtype is not
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able to deal with length attribute nested in top level structures. */
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extern GTY ((length ("crtl->emit.x_reg_rtx_no"))) rtx * regno_reg_rtx;
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/* For backward compatibility... eventually these should all go away. */
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#define reg_rtx_no (crtl->emit.x_reg_rtx_no)
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#define REGNO_POINTER_ALIGN(REGNO) (crtl->emit.regno_pointer_align[REGNO])
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struct GTY(()) expr_status {
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/* Number of units that we should eventually pop off the stack.
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These are the arguments to function calls that have already returned. */
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poly_int64_pod x_pending_stack_adjust;
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/* Under some ABIs, it is the caller's responsibility to pop arguments
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pushed for function calls. A naive implementation would simply pop
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the arguments immediately after each call. However, if several
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function calls are made in a row, it is typically cheaper to pop
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all the arguments after all of the calls are complete since a
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single pop instruction can be used. Therefore, GCC attempts to
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defer popping the arguments until absolutely necessary. (For
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example, at the end of a conditional, the arguments must be popped,
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since code outside the conditional won't know whether or not the
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arguments need to be popped.)
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When INHIBIT_DEFER_POP is nonzero, however, the compiler does not
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attempt to defer pops. Instead, the stack is popped immediately
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after each call. Rather then setting this variable directly, use
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NO_DEFER_POP and OK_DEFER_POP. */
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int x_inhibit_defer_pop;
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/* If PREFERRED_STACK_BOUNDARY and PUSH_ROUNDING are defined, the stack
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boundary can be momentarily unaligned while pushing the arguments.
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Record the delta since last aligned boundary here in order to get
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stack alignment in the nested function calls working right. */
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poly_int64_pod x_stack_pointer_delta;
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/* Nonzero means __builtin_saveregs has already been done in this function.
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The value is the pseudoreg containing the value __builtin_saveregs
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returned. */
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rtx x_saveregs_value;
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/* Similarly for __builtin_apply_args. */
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rtx x_apply_args_value;
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/* List of labels that must never be deleted. */
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vec<rtx_insn *, va_gc> *x_forced_labels;
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};
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typedef struct call_site_record_d *call_site_record;
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/* RTL representation of exception handling. */
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struct GTY(()) rtl_eh {
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rtx ehr_stackadj;
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rtx ehr_handler;
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rtx_code_label *ehr_label;
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rtx sjlj_fc;
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rtx_insn *sjlj_exit_after;
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vec<uchar, va_gc> *action_record_data;
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vec<call_site_record, va_gc> *call_site_record_v[2];
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};
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#define pending_stack_adjust (crtl->expr.x_pending_stack_adjust)
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#define inhibit_defer_pop (crtl->expr.x_inhibit_defer_pop)
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#define saveregs_value (crtl->expr.x_saveregs_value)
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#define apply_args_value (crtl->expr.x_apply_args_value)
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#define forced_labels (crtl->expr.x_forced_labels)
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#define stack_pointer_delta (crtl->expr.x_stack_pointer_delta)
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struct gimple_df;
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struct call_site_record_d;
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struct dw_fde_node;
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struct GTY(()) varasm_status {
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/* If we're using a per-function constant pool, this is it. */
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struct rtx_constant_pool *pool;
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/* Number of tree-constants deferred during the expansion of this
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function. */
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unsigned int deferred_constants;
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};
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/* Data for function partitioning. */
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struct GTY(()) function_subsections {
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/* Assembly labels for the hot and cold text sections, to
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be used by debugger functions for determining the size of text
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sections. */
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const char *hot_section_label;
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const char *cold_section_label;
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const char *hot_section_end_label;
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const char *cold_section_end_label;
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};
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/* Describe an empty area of space in the stack frame. These can be chained
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into a list; this is used to keep track of space wasted for alignment
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reasons. */
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class GTY(()) frame_space
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{
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public:
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class frame_space *next;
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poly_int64 start;
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poly_int64 length;
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};
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/* Describe emitted calls for -fcallgraph-info. */
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struct GTY(()) callinfo_callee
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{
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location_t location;
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tree decl;
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};
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/* Describe dynamic allocation for -fcallgraph-info=da. */
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struct GTY(()) callinfo_dalloc
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{
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location_t location;
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char const *name;
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};
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class GTY(()) stack_usage
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{
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public:
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/* # of bytes of static stack space allocated by the function. */
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HOST_WIDE_INT static_stack_size;
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/* # of bytes of dynamic stack space allocated by the function. This is
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meaningful only if has_unbounded_dynamic_stack_size is zero. */
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HOST_WIDE_INT dynamic_stack_size;
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/* Upper bound on the number of bytes pushed onto the stack after the
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prologue. If !ACCUMULATE_OUTGOING_ARGS, it contains the outgoing
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arguments. */
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poly_int64 pushed_stack_size;
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/* Nonzero if the amount of stack space allocated dynamically cannot
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be bounded at compile-time. */
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unsigned int has_unbounded_dynamic_stack_size : 1;
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/* Functions called within the function, if callgraph is enabled. */
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vec<callinfo_callee, va_gc> *callees;
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/* Dynamic allocations encountered within the function, if callgraph
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da is enabled. */
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vec<callinfo_dalloc, va_gc> *dallocs;
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};
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#define current_function_static_stack_size (cfun->su->static_stack_size)
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#define current_function_dynamic_stack_size (cfun->su->dynamic_stack_size)
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#define current_function_pushed_stack_size (cfun->su->pushed_stack_size)
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#define current_function_has_unbounded_dynamic_stack_size \
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(cfun->su->has_unbounded_dynamic_stack_size)
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#define current_function_allocates_dynamic_stack_space \
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(current_function_dynamic_stack_size != 0 \
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|| current_function_has_unbounded_dynamic_stack_size)
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/* This structure can save all the important global and static variables
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describing the status of the current function. */
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struct GTY(()) function {
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struct eh_status *eh;
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/* The control flow graph for this function. */
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struct control_flow_graph *cfg;
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/* GIMPLE body for this function. */
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gimple_seq gimple_body;
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/* SSA and dataflow information. */
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struct gimple_df *gimple_df;
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/* The loops in this function. */
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struct loops *x_current_loops;
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/* Filled by the GIMPLE and RTL FEs, pass to start compilation with. */
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char *pass_startwith;
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/* The stack usage of this function. */
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class stack_usage *su;
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/* Value histograms attached to particular statements. */
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htab_t GTY((skip)) value_histograms;
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/* Different from normal TODO_flags which are handled right at the
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beginning or the end of one pass execution, the pending_TODOs
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are passed down in the pipeline until one of its consumers can
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perform the requested action. Consumers should then clear the
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flags for the actions that they have taken. */
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unsigned int pending_TODOs;
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/* For function.c. */
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/* Points to the FUNCTION_DECL of this function. */
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tree decl;
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/* A PARM_DECL that should contain the static chain for this function.
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It will be initialized at the beginning of the function. */
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tree static_chain_decl;
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/* An expression that contains the non-local goto save area. The first
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word is the saved frame pointer and the second is the saved stack
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pointer. */
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tree nonlocal_goto_save_area;
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/* Vector of function local variables, functions, types and constants. */
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vec<tree, va_gc> *local_decls;
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/* For md files. */
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/* tm.h can use this to store whatever it likes. */
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struct machine_function * GTY ((maybe_undef)) machine;
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/* Language-specific code can use this to store whatever it likes. */
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struct language_function * language;
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/* Used types hash table. */
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hash_set<tree> *GTY (()) used_types_hash;
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/* Dwarf2 Frame Description Entry, containing the Call Frame Instructions
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used for unwinding. Only set when either dwarf2 unwinding or dwarf2
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debugging is enabled. */
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struct dw_fde_node *fde;
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/* Last statement uid. */
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int last_stmt_uid;
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/* Debug marker counter. Count begin stmt markers. We don't have
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to keep it exact, it's more of a rough estimate to enable us to
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decide whether they are too many to copy during inlining, or when
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expanding to RTL. */
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int debug_marker_count;
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/* Function sequence number for profiling, debugging, etc. */
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int funcdef_no;
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/* Line number of the start of the function for debugging purposes. */
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location_t function_start_locus;
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/* Line number of the end of the function. */
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location_t function_end_locus;
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/* Properties used by the pass manager. */
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unsigned int curr_properties;
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unsigned int last_verified;
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/* Non-null if the function does something that would prevent it from
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being copied; this applies to both versioning and inlining. Set to
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a string describing the reason for failure. */
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const char * GTY((skip)) cannot_be_copied_reason;
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/* Last assigned dependence info clique. */
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unsigned short last_clique;
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/* Collected bit flags. */
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/* Number of units of general registers that need saving in stdarg
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function. What unit is depends on the backend, either it is number
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of bytes, or it can be number of registers. */
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unsigned int va_list_gpr_size : 8;
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/* Number of units of floating point registers that need saving in stdarg
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function. */
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unsigned int va_list_fpr_size : 8;
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/* Nonzero if function being compiled can call setjmp. */
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unsigned int calls_setjmp : 1;
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/* Nonzero if function being compiled can call alloca,
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either as a subroutine or builtin. */
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unsigned int calls_alloca : 1;
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/* Nonzero if function being compiled can call __builtin_eh_return. */
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unsigned int calls_eh_return : 1;
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/* Nonzero if function being compiled receives nonlocal gotos
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from nested functions. */
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unsigned int has_nonlocal_label : 1;
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/* Nonzero if function being compiled has a forced label
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placed into static storage. */
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unsigned int has_forced_label_in_static : 1;
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/* Nonzero if we've set cannot_be_copied_reason. I.e. if
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(cannot_be_copied_set && !cannot_be_copied_reason), the function
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can in fact be copied. */
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unsigned int cannot_be_copied_set : 1;
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/* Nonzero if current function uses stdarg.h or equivalent. */
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unsigned int stdarg : 1;
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unsigned int after_inlining : 1;
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unsigned int always_inline_functions_inlined : 1;
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/* Nonzero if function being compiled can throw synchronous non-call
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exceptions. */
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unsigned int can_throw_non_call_exceptions : 1;
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/* Nonzero if instructions that may throw exceptions but don't otherwise
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contribute to the execution of the program can be deleted. */
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unsigned int can_delete_dead_exceptions : 1;
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/* Fields below this point are not set for abstract functions; see
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allocate_struct_function. */
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/* Nonzero if function being compiled needs to be given an address
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where the value should be stored. */
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unsigned int returns_struct : 1;
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/* Nonzero if function being compiled needs to
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return the address of where it has put a structure value. */
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unsigned int returns_pcc_struct : 1;
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/* Nonzero if this function has local DECL_HARD_REGISTER variables.
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In this case code motion has to be done more carefully. */
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unsigned int has_local_explicit_reg_vars : 1;
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/* Nonzero if the current function is a thunk, i.e., a lightweight
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function implemented by the output_mi_thunk hook) that just
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adjusts one of its arguments and forwards to another
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function. */
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unsigned int is_thunk : 1;
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/* Nonzero if the current function contains any loops with
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loop->force_vectorize set. */
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unsigned int has_force_vectorize_loops : 1;
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/* Nonzero if the current function contains any loops with
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nonzero value in loop->simduid. */
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unsigned int has_simduid_loops : 1;
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/* Nonzero when the tail call has been identified. */
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unsigned int tail_call_marked : 1;
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/* Nonzero if the current function contains a #pragma GCC unroll. */
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unsigned int has_unroll : 1;
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/* Set when the function was compiled with generation of debug
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(begin stmt, inline entry, ...) markers enabled. */
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unsigned int debug_nonbind_markers : 1;
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/* Set if this is a coroutine-related function. */
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unsigned int coroutine_component : 1;
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/* Set if there are any OMP_TARGET regions in the function. */
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unsigned int has_omp_target : 1;
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};
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/* Add the decl D to the local_decls list of FUN. */
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void add_local_decl (struct function *fun, tree d);
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#define FOR_EACH_LOCAL_DECL(FUN, I, D) \
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FOR_EACH_VEC_SAFE_ELT_REVERSE ((FUN)->local_decls, I, D)
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/* Record a final call to CALLEE at LOCATION. */
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void record_final_call (tree callee, location_t location);
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/* Record a dynamic allocation made for DECL_OR_EXP. */
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void record_dynamic_alloc (tree decl_or_exp);
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/* If va_list_[gf]pr_size is set to this, it means we don't know how
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many units need to be saved. */
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#define VA_LIST_MAX_GPR_SIZE 255
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#define VA_LIST_MAX_FPR_SIZE 255
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/* The function currently being compiled. */
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extern GTY(()) struct function *cfun;
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/* In order to ensure that cfun is not set directly, we redefine it so
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that it is not an lvalue. Rather than assign to cfun, use
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push_cfun or set_cfun. */
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#define cfun (cfun + 0)
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/* Nonzero if we've already converted virtual regs to hard regs. */
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extern int virtuals_instantiated;
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/* Nonzero if at least one trampoline has been created. */
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extern int trampolines_created;
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struct GTY((for_user)) types_used_by_vars_entry {
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tree type;
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tree var_decl;
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};
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struct used_type_hasher : ggc_ptr_hash<types_used_by_vars_entry>
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{
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static hashval_t hash (types_used_by_vars_entry *);
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static bool equal (types_used_by_vars_entry *, types_used_by_vars_entry *);
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};
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/* Hash table making the relationship between a global variable
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and the types it references in its initializer. The key of the
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entry is a referenced type, and the value is the DECL of the global
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variable. types_use_by_vars_do_hash and types_used_by_vars_eq below are
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the hash and equality functions to use for this hash table. */
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extern GTY(()) hash_table<used_type_hasher> *types_used_by_vars_hash;
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void types_used_by_var_decl_insert (tree type, tree var_decl);
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/* During parsing of a global variable, this vector contains the types
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referenced by the global variable. */
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extern GTY(()) vec<tree, va_gc> *types_used_by_cur_var_decl;
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/* Return the loop tree of FN. */
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inline struct loops *
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loops_for_fn (struct function *fn)
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{
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return fn->x_current_loops;
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}
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/* Set the loop tree of FN to LOOPS. */
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inline void
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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
|
||
{
|
||
poly_int64_pod 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_mode ((SIZE).constant, Pmode) \
|
||
: 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 poly_int64 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 (poly_int64, tree);
|
||
|
||
extern unsigned int spill_slot_alignment (machine_mode);
|
||
|
||
extern rtx assign_stack_local_1 (machine_mode, poly_int64, int, int);
|
||
extern rtx assign_stack_local (machine_mode, poly_int64, int);
|
||
extern rtx assign_stack_temp_for_type (machine_mode, poly_int64, tree);
|
||
extern rtx assign_stack_temp (machine_mode, poly_int64);
|
||
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 (gimple_seq *);
|
||
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 */
|