/* Expand builtin functions.
- Copyright (C) 1988-2013 Free Software Foundation, Inc.
+ Copyright (C) 1988-2024 Free Software Foundation, Inc.
This file is part of GCC.
#ifndef GCC_BUILTINS_H
#define GCC_BUILTINS_H
+#include <mpc.h>
+
/* Target-dependent globals. */
struct target_builtins {
/* For each register that may be used for calling a function, this
the register is not used for calling a function. If the machine
has register windows, this gives only the outbound registers.
INCOMING_REGNO gives the corresponding inbound register. */
- enum machine_mode x_apply_args_mode[FIRST_PSEUDO_REGISTER];
+ fixed_size_mode_pod x_apply_args_mode[FIRST_PSEUDO_REGISTER];
/* For each register that may be used for returning values, this gives
a mode used to copy the register's value. VOIDmode indicates the
register is not used for returning values. If the machine has
register windows, this gives only the outbound registers.
INCOMING_REGNO gives the corresponding inbound register. */
- enum machine_mode x_apply_result_mode[FIRST_PSEUDO_REGISTER];
+ fixed_size_mode_pod x_apply_result_mode[FIRST_PSEUDO_REGISTER];
+
+ /* Nonzero iff the arrays above have been initialized. The _plus_one suffix
+ is for zero initialization to make it an unreasonable size, used to signal
+ that the size and the corresponding mode array has not been
+ initialized. */
+ int x_apply_args_size_plus_one;
+ int x_apply_result_size_plus_one;
};
-extern GTY(()) struct target_builtins default_target_builtins;
+extern struct target_builtins default_target_builtins;
#if SWITCHABLE_TARGET
extern struct target_builtins *this_target_builtins;
#else
#define this_target_builtins (&default_target_builtins)
#endif
-#endif
+/* Non-zero if __builtin_constant_p should be folded right away. */
+extern bool force_folding_builtin_constant_p;
+
+extern bool called_as_built_in (tree);
+extern bool get_object_alignment_1 (tree, unsigned int *,
+ unsigned HOST_WIDE_INT *);
+extern bool get_object_alignment_2 (tree, unsigned int *,
+ unsigned HOST_WIDE_INT *, bool);
+extern unsigned int get_object_alignment (tree);
+extern bool get_pointer_alignment_1 (tree, unsigned int *,
+ unsigned HOST_WIDE_INT *);
+extern unsigned int get_pointer_alignment (tree);
+extern unsigned string_length (const void*, unsigned, unsigned);
+
+struct c_strlen_data
+{
+ /* [MINLEN, MAXBOUND, MAXLEN] is a range describing the length of
+ one or more strings of possibly unknown length. For a single
+ string of known length the range is a constant where
+ MINLEN == MAXBOUND == MAXLEN holds.
+ For other strings, MINLEN is the length of the shortest known
+ string. MAXBOUND is the length of a string that could be stored
+ in the largest array referenced by the expression. MAXLEN is
+ the length of the longest sequence of non-zero bytes
+ in an object referenced by the expression. For such strings,
+ MINLEN <= MAXBOUND <= MAXLEN holds. For example, given:
+ struct A { char a[7], b[]; };
+ extern struct A *p;
+ n = strlen (p->a);
+ the computed range will be [0, 6, ALL_ONES].
+ However, for a conditional expression involving a string
+ of known length and an array of unknown bound such as
+ n = strlen (i ? p->b : "123");
+ the range will be [3, 3, ALL_ONES].
+ MINLEN != 0 && MAXLEN == ALL_ONES indicates that MINLEN is
+ the length of the shortest known string and implies that
+ the shortest possible string referenced by the expression may
+ actually be the empty string. This distinction is useful for
+ diagnostics. get_range_strlen() return value distinguishes
+ between these two cases.
+ As the tighter (and more optimistic) bound, MAXBOUND is suitable
+ for diagnostics but not for optimization.
+ As the more conservative bound, MAXLEN is intended to be used
+ for optimization. */
+ tree minlen;
+ tree maxlen;
+ tree maxbound;
+ /* When non-null, DECL refers to the declaration known to store
+ an unterminated constant character array, as in:
+ const char s[] = { 'a', 'b', 'c' };
+ It is used to diagnose uses of such arrays in functions such as
+ strlen() that expect a nul-terminated string as an argument. */
+ tree decl;
+ /* Non-constant offset from the beginning of a string not accounted
+ for in the length range. Used to improve diagnostics. */
+ tree off;
+};
+
+extern tree c_strlen (tree, int, c_strlen_data * = NULL, unsigned = 1);
+extern rtx c_readstr (const char *, fixed_size_mode, bool = true);
+extern void expand_builtin_setjmp_setup (rtx, rtx);
+extern void expand_builtin_setjmp_receiver (rtx);
+extern void expand_builtin_update_setjmp_buf (rtx);
+extern tree mathfn_built_in (tree, enum built_in_function fn);
+extern tree mathfn_built_in (tree, combined_fn);
+extern tree mathfn_built_in_type (combined_fn);
+extern rtx builtin_strncpy_read_str (void *, void *, HOST_WIDE_INT,
+ fixed_size_mode);
+extern rtx builtin_memset_read_str (void *, void *, HOST_WIDE_INT,
+ fixed_size_mode);
+extern rtx expand_builtin_memset (tree, rtx, machine_mode);
+extern rtx expand_builtin_saveregs (void);
+extern tree std_build_builtin_va_list (void);
+extern tree std_fn_abi_va_list (tree);
+extern tree std_canonical_va_list_type (tree);
+extern void std_expand_builtin_va_start (tree, rtx);
+extern void expand_builtin_trap (void);
+extern void expand_ifn_atomic_bit_test_and (gcall *);
+extern void expand_ifn_atomic_compare_exchange (gcall *);
+extern void expand_ifn_atomic_op_fetch_cmp_0 (gcall *);
+extern rtx expand_builtin (tree, rtx, rtx, machine_mode, int);
+extern enum built_in_function builtin_mathfn_code (const_tree);
+extern tree fold_builtin_expect (location_t, tree, tree, tree, tree);
+extern bool avoid_folding_inline_builtin (tree);
+extern tree fold_call_expr (location_t, tree, bool);
+extern tree fold_builtin_call_array (location_t, tree, tree, int, tree *);
+extern bool validate_gimple_arglist (const gcall *, ...);
+extern rtx default_expand_builtin (tree, rtx, rtx, machine_mode, int);
+extern void maybe_emit_call_builtin___clear_cache (rtx, rtx);
+extern bool fold_builtin_next_arg (tree, bool);
+extern tree do_mpc_arg2 (tree, tree, tree, int, int (*)(mpc_ptr, mpc_srcptr, mpc_srcptr, mpc_rnd_t));
+extern tree fold_call_stmt (gcall *, bool);
+extern void set_builtin_user_assembler_name (tree decl, const char *asmspec);
+extern bool is_simple_builtin (tree);
+extern bool is_inexpensive_builtin (tree);
+extern bool readonly_data_expr (tree exp);
+extern bool init_target_chars (void);
+extern unsigned HOST_WIDE_INT target_newline;
+extern unsigned HOST_WIDE_INT target_percent;
+extern char target_percent_s[3];
+extern char target_percent_c[3];
+extern char target_percent_s_newline[4];
+extern bool target_char_cst_p (tree t, char *p);
+extern rtx get_memory_rtx (tree exp, tree len);
+
+extern internal_fn associated_internal_fn (combined_fn, tree);
+extern internal_fn associated_internal_fn (tree);
+extern internal_fn replacement_internal_fn (gcall *);
+
+extern bool builtin_with_linkage_p (tree);
+extern int type_to_class (tree);
+
+#endif /* GCC_BUILTINS_H */
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