1/* Definitions of target machine for GNU compiler for IA-64.
2   Copyright (C) 1999, 2000, 2002, 2003, 2004, 2005
3   Free Software Foundation, Inc.
4
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify
8it under the terms of the GNU General Public License as published by
9the Free Software Foundation; either version 2, or (at your option)
10any later version.
11
12GCC is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15GNU General Public License for more details.
16
17You should have received a copy of the GNU General Public License
18along with GCC; see the file COPYING.  If not, write to
19the Free Software Foundation, 51 Franklin Street, Fifth Floor,
20Boston, MA 02110-1301, USA.  */
21
22/* Variables defined in ia64.c.  */
23
24#ifdef RTX_CODE
25extern GTY(()) rtx ia64_compare_op0;
26extern GTY(()) rtx ia64_compare_op1;
27#endif
28
29/* Functions defined in ia64.c */
30
31extern int bundling_p;
32#ifdef RTX_CODE
33extern int ia64_st_address_bypass_p (rtx, rtx);
34extern int ia64_ld_address_bypass_p (rtx, rtx);
35extern int ia64_produce_address_p (rtx);
36
37extern bool ia64_const_ok_for_letter_p (HOST_WIDE_INT, char);
38extern bool ia64_const_double_ok_for_letter_p (rtx, char);
39extern bool ia64_extra_constraint (rtx, char);
40extern bool ia64_legitimate_constant_p (rtx);
41
42extern rtx ia64_expand_move (rtx, rtx);
43extern int ia64_move_ok (rtx, rtx);
44extern int ia64_load_pair_ok (rtx, rtx);
45extern int addp4_optimize_ok (rtx, rtx);
46extern void ia64_emit_cond_move (rtx, rtx, rtx);
47extern int ia64_depz_field_mask (rtx, rtx);
48extern void ia64_split_tmode_move (rtx[]);
49extern bool ia64_expand_movxf_movrf (enum machine_mode, rtx[]);
50extern rtx ia64_expand_compare (enum rtx_code, enum machine_mode);
51extern void ia64_expand_vecint_cmov (rtx[]);
52extern bool ia64_expand_vecint_minmax (enum rtx_code, enum machine_mode, rtx[]);
53extern void ia64_expand_widen_sum (rtx[], bool);
54extern void ia64_expand_dot_prod_v8qi (rtx[], bool);
55extern void ia64_expand_call (rtx, rtx, rtx, int);
56extern void ia64_split_call (rtx, rtx, rtx, rtx, rtx, int, int);
57extern void ia64_reload_gp (void);
58extern void ia64_expand_atomic_op (enum rtx_code, rtx, rtx, rtx, rtx);
59
60extern HOST_WIDE_INT ia64_initial_elimination_offset (int, int);
61extern void ia64_expand_prologue (void);
62extern void ia64_expand_epilogue (int);
63
64extern int ia64_direct_return (void);
65extern bool ia64_expand_load_address (rtx, rtx);
66extern int ia64_hard_regno_rename_ok (int, int);
67
68extern void ia64_initialize_trampoline (rtx, rtx, rtx);
69extern void ia64_print_operand_address (FILE *, rtx);
70extern void ia64_print_operand (FILE *, rtx, int);
71extern enum reg_class ia64_preferred_reload_class (rtx, enum reg_class);
72extern enum reg_class ia64_secondary_reload_class (enum reg_class,
73						   enum machine_mode, rtx);
74extern void process_for_unwind_directive (FILE *, rtx);
75extern const char *get_bundle_name (int);
76#endif /* RTX_CODE */
77
78#ifdef TREE_CODE
79#ifdef RTX_CODE
80extern rtx ia64_function_arg (CUMULATIVE_ARGS *, enum machine_mode,
81			      tree, int, int);
82extern rtx ia64_expand_builtin (tree, rtx, rtx, enum machine_mode, int);
83extern rtx ia64_va_arg (tree, tree);
84extern rtx ia64_function_value (tree, tree);
85#endif /* RTX_CODE */
86
87extern void ia64_function_arg_advance (CUMULATIVE_ARGS *, enum machine_mode,
88				       tree, int);
89extern int ia64_function_arg_boundary (enum machine_mode, tree);
90extern void ia64_asm_output_external (FILE *, tree, const char *);
91#endif /* TREE_CODE */
92
93extern int ia64_register_move_cost (enum machine_mode, enum reg_class,
94				    enum reg_class);
95extern int ia64_epilogue_uses (int);
96extern int ia64_eh_uses (int);
97extern void emit_safe_across_calls (void);
98extern void ia64_init_builtins (void);
99extern void ia64_override_options (void);
100extern int ia64_dbx_register_number (int);
101
102extern rtx ia64_return_addr_rtx (HOST_WIDE_INT, rtx);
103extern void ia64_split_return_addr_rtx (rtx);
104
105#ifdef ARGS_SIZE_RTX
106/* expr.h defines ARGS_SIZE_RTX and `enum direction'.  */
107extern enum direction ia64_hpux_function_arg_padding (enum machine_mode, tree);
108#endif /* ARGS_SIZE_RTX */
109
110extern void ia64_hpux_handle_builtin_pragma (struct cpp_reader *);
111extern void ia64_output_function_profiler (FILE *, int);
112extern void ia64_profile_hook (int);
113
114extern void ia64_optimization_options (int, int);
115