1 /* Definitions for code generation pass of GNU compiler.
2 Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GCC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING. If not, write to
18 the Free Software Foundation, 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
24 #include "insn-codes.h"
26 /* Optabs are tables saying how to generate insn bodies
27 for various machine modes and numbers of operands.
28 Each optab applies to one operation.
29 For example, add_optab applies to addition.
31 The insn_code slot is the enum insn_code that says how to
32 generate an insn for this operation on a particular machine mode.
33 It is CODE_FOR_nothing if there is no such insn on the target machine.
35 The `lib_call' slot is the name of the library function that
36 can be used to perform the operation.
38 A few optabs, such as move_optab and cmp_optab, are used
44 struct optab_handlers {
45 enum insn_code insn_code;
47 } handlers [NUM_MACHINE_MODES];
49 typedef struct optab * optab;
51 /* Given an enum insn_code, access the function to construct
52 the body of that kind of insn. */
53 #define GEN_FCN(CODE) (*insn_data[(int) (CODE)].genfun)
55 /* Enumeration of valid indexes into optab_table. */
63 /* Signed and fp multiply */
66 /* Signed multiply, return high word */
69 /* Signed multiply with result one machine mode wider than args */
76 /* Signed divide-and-remainder in one */
80 /* Signed remainder */
83 /* Convert float to integer in float fmt */
93 /* Arithmetic shift left */
95 /* Logical shift right */
97 /* Arithmetic shift right */
103 /* Signed and floating-point minimum value */
105 /* Signed and floating-point maximum value */
107 /* Unsigned minimum value */
109 /* Unsigned maximum value */
113 /* Arc tangent of y/x */
116 /* Move instruction. */
118 /* Move, preserving high part of register. */
121 /* Unary operations */
130 /* Bit scanning and counting */
144 /* Natural Logarithm */
146 /* Rounding functions */
154 /* Inverse tangent */
157 /* Compare insn; two operands. */
159 /* Used only for libcalls for unsigned comparisons. */
161 /* tst insn; compare one operand against 0 */
164 /* Floating point comparison optabs - used primarily for libfuncs */
176 /* Combined compare & jump/store flags/move operations. */
181 /* Push instruction. */
184 /* Conditional add instruction. */
190 extern GTY(()) optab optab_table[OTI_MAX];
192 #define add_optab (optab_table[OTI_add])
193 #define sub_optab (optab_table[OTI_sub])
194 #define smul_optab (optab_table[OTI_smul])
195 #define addv_optab (optab_table[OTI_addv])
196 #define subv_optab (optab_table[OTI_subv])
197 #define smul_highpart_optab (optab_table[OTI_smul_highpart])
198 #define umul_highpart_optab (optab_table[OTI_umul_highpart])
199 #define smul_widen_optab (optab_table[OTI_smul_widen])
200 #define umul_widen_optab (optab_table[OTI_umul_widen])
201 #define sdiv_optab (optab_table[OTI_sdiv])
202 #define smulv_optab (optab_table[OTI_smulv])
203 #define sdivv_optab (optab_table[OTI_sdivv])
204 #define sdivmod_optab (optab_table[OTI_sdivmod])
205 #define udiv_optab (optab_table[OTI_udiv])
206 #define udivmod_optab (optab_table[OTI_udivmod])
207 #define smod_optab (optab_table[OTI_smod])
208 #define umod_optab (optab_table[OTI_umod])
209 #define ftrunc_optab (optab_table[OTI_ftrunc])
210 #define and_optab (optab_table[OTI_and])
211 #define ior_optab (optab_table[OTI_ior])
212 #define xor_optab (optab_table[OTI_xor])
213 #define ashl_optab (optab_table[OTI_ashl])
214 #define lshr_optab (optab_table[OTI_lshr])
215 #define ashr_optab (optab_table[OTI_ashr])
216 #define rotl_optab (optab_table[OTI_rotl])
217 #define rotr_optab (optab_table[OTI_rotr])
218 #define smin_optab (optab_table[OTI_smin])
219 #define smax_optab (optab_table[OTI_smax])
220 #define umin_optab (optab_table[OTI_umin])
221 #define umax_optab (optab_table[OTI_umax])
222 #define pow_optab (optab_table[OTI_pow])
223 #define atan2_optab (optab_table[OTI_atan2])
225 #define mov_optab (optab_table[OTI_mov])
226 #define movstrict_optab (optab_table[OTI_movstrict])
228 #define neg_optab (optab_table[OTI_neg])
229 #define negv_optab (optab_table[OTI_negv])
230 #define abs_optab (optab_table[OTI_abs])
231 #define absv_optab (optab_table[OTI_absv])
232 #define one_cmpl_optab (optab_table[OTI_one_cmpl])
233 #define ffs_optab (optab_table[OTI_ffs])
234 #define clz_optab (optab_table[OTI_clz])
235 #define ctz_optab (optab_table[OTI_ctz])
236 #define popcount_optab (optab_table[OTI_popcount])
237 #define parity_optab (optab_table[OTI_parity])
238 #define sqrt_optab (optab_table[OTI_sqrt])
239 #define sin_optab (optab_table[OTI_sin])
240 #define cos_optab (optab_table[OTI_cos])
241 #define exp_optab (optab_table[OTI_exp])
242 #define log_optab (optab_table[OTI_log])
243 #define floor_optab (optab_table[OTI_floor])
244 #define ceil_optab (optab_table[OTI_ceil])
245 #define trunc_optab (optab_table[OTI_trunc])
246 #define round_optab (optab_table[OTI_round])
247 #define nearbyint_optab (optab_table[OTI_nearbyint])
248 #define tan_optab (optab_table[OTI_tan])
249 #define atan_optab (optab_table[OTI_atan])
251 #define cmp_optab (optab_table[OTI_cmp])
252 #define ucmp_optab (optab_table[OTI_ucmp])
253 #define tst_optab (optab_table[OTI_tst])
255 #define eq_optab (optab_table[OTI_eq])
256 #define ne_optab (optab_table[OTI_ne])
257 #define gt_optab (optab_table[OTI_gt])
258 #define ge_optab (optab_table[OTI_ge])
259 #define lt_optab (optab_table[OTI_lt])
260 #define le_optab (optab_table[OTI_le])
261 #define unord_optab (optab_table[OTI_unord])
263 #define strlen_optab (optab_table[OTI_strlen])
265 #define cbranch_optab (optab_table[OTI_cbranch])
266 #define cmov_optab (optab_table[OTI_cmov])
267 #define cstore_optab (optab_table[OTI_cstore])
268 #define push_optab (optab_table[OTI_push])
269 #define addcc_optab (optab_table[OTI_addcc])
271 /* Tables of patterns for extending one integer mode to another. */
272 extern enum insn_code extendtab[MAX_MACHINE_MODE][MAX_MACHINE_MODE][2];
274 /* Tables of patterns for converting between fixed and floating point. */
275 extern enum insn_code fixtab[NUM_MACHINE_MODES][NUM_MACHINE_MODES][2];
276 extern enum insn_code fixtrunctab[NUM_MACHINE_MODES][NUM_MACHINE_MODES][2];
277 extern enum insn_code floattab[NUM_MACHINE_MODES][NUM_MACHINE_MODES][2];
279 /* These arrays record the insn_code of insns that may be needed to
280 perform input and output reloads of special objects. They provide a
281 place to pass a scratch register. */
282 extern enum insn_code reload_in_optab[NUM_MACHINE_MODES];
283 extern enum insn_code reload_out_optab[NUM_MACHINE_MODES];
285 /* Contains the optab used for each rtx code. */
286 extern GTY(()) optab code_to_optab[NUM_RTX_CODE + 1];
289 typedef rtx (*rtxfun) (rtx);
291 /* Indexed by the rtx-code for a conditional (eg. EQ, LT,...)
292 gives the gen_function to make a branch to test that condition. */
294 extern rtxfun bcc_gen_fctn[NUM_RTX_CODE];
296 /* Indexed by the rtx-code for a conditional (eg. EQ, LT,...)
297 gives the insn code to make a store-condition insn
298 to test that condition. */
300 extern enum insn_code setcc_gen_code[NUM_RTX_CODE];
302 #ifdef HAVE_conditional_move
303 /* Indexed by the machine mode, gives the insn code to make a conditional
306 extern enum insn_code movcc_gen_code[NUM_MACHINE_MODES];
309 /* This array records the insn_code of insns to perform block moves. */
310 extern enum insn_code movstr_optab[NUM_MACHINE_MODES];
312 /* This array records the insn_code of insns to perform block clears. */
313 extern enum insn_code clrstr_optab[NUM_MACHINE_MODES];
315 /* Define functions given in optabs.c. */
317 /* Expand a binary operation given optab and rtx operands. */
318 extern rtx expand_binop (enum machine_mode, optab, rtx, rtx, rtx, int,
321 /* Expand a binary operation with both signed and unsigned forms. */
322 extern rtx sign_expand_binop (enum machine_mode, optab, optab, rtx, rtx,
323 rtx, int, enum optab_methods);
325 /* Generate code to perform an operation on two operands with two results. */
326 extern int expand_twoval_binop (optab, rtx, rtx, rtx, rtx, int);
328 /* Expand a unary arithmetic operation given optab rtx operand. */
329 extern rtx expand_unop (enum machine_mode, optab, rtx, rtx, int);
331 /* Expand the absolute value operation. */
332 extern rtx expand_abs_nojump (enum machine_mode, rtx, rtx, int);
333 extern rtx expand_abs (enum machine_mode, rtx, rtx, int, int);
335 /* Expand the complex absolute value operation. */
336 extern rtx expand_complex_abs (enum machine_mode, rtx, rtx, int);
338 /* Generate an instruction with a given INSN_CODE with an output and
340 extern void emit_unop_insn (int, rtx, rtx, enum rtx_code);
342 /* Emit code to perform a series of operations on a multi-word quantity, one
344 extern rtx emit_no_conflict_block (rtx, rtx, rtx, rtx, rtx);
346 /* Emit one rtl instruction to store zero in specified rtx. */
347 extern void emit_clr_insn (rtx);
349 /* Emit one rtl insn to store 1 in specified rtx assuming it contains 0. */
350 extern void emit_0_to_1_insn (rtx);
352 /* Emit one rtl insn to compare two rtx's. */
353 extern void emit_cmp_insn (rtx, rtx, enum rtx_code, rtx, enum machine_mode,
356 /* The various uses that a comparison can have; used by can_compare_p:
357 jumps, conditional moves, store flag operations. */
358 enum can_compare_purpose
365 /* Nonzero if a compare of mode MODE can be done straightforwardly
366 (without splitting it into pieces). */
367 extern int can_compare_p (enum rtx_code, enum machine_mode,
368 enum can_compare_purpose);
370 extern rtx prepare_operand (int, rtx, int, enum machine_mode,
371 enum machine_mode, int);
373 /* Return the INSN_CODE to use for an extend operation. */
374 extern enum insn_code can_extend_p (enum machine_mode, enum machine_mode, int);
376 /* Generate the body of an insn to extend Y (with mode MFROM)
377 into X (with mode MTO). Do zero-extension if UNSIGNEDP is nonzero. */
378 extern rtx gen_extend_insn (rtx, rtx, enum machine_mode,
379 enum machine_mode, int);
381 /* Initialize the tables that control conversion between fixed and
383 extern void init_fixtab (void);
384 extern void init_floattab (void);
386 /* Call this to reset the function entry for one optab. */
387 extern void set_optab_libfunc (optab, enum machine_mode, const char *);
389 /* Generate code for a FLOAT_EXPR. */
390 extern void expand_float (rtx, rtx, int);
392 /* Generate code for a FIX_EXPR. */
393 extern void expand_fix (rtx, rtx, int);
395 #endif /* GCC_OPTABS_H */