1 ;; Predicate definitions for Renesas / SuperH SH.
2 ;; Copyright (C) 2005, 2006 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, 51 Franklin Street, Fifth Floor,
19 ;; Boston, MA 02110-1301, USA.
21 ;; TODO: Add a comment here.
23 (define_predicate "trapping_target_operand"
24 (match_code "if_then_else")
26 rtx cond, mem, res, tar, and;
28 if (GET_MODE (op) != PDImode)
33 if (GET_CODE (mem) != MEM
34 || (GET_CODE (res) != SIGN_EXTEND && GET_CODE (res) != TRUNCATE))
37 if (!rtx_equal_p (XEXP (mem, 0), tar)
38 || GET_MODE (tar) != Pmode)
40 if (GET_CODE (cond) == CONST)
42 cond = XEXP (cond, 0);
43 if (!EXTRA_CONSTRAINT_Csy (tar))
45 if (GET_CODE (tar) == CONST)
48 else if (!arith_reg_operand (tar, VOIDmode)
49 && ! EXTRA_CONSTRAINT_Csy (tar))
51 if (GET_CODE (cond) != EQ)
54 return (GET_CODE (and) == AND
55 && rtx_equal_p (XEXP (and, 0), tar)
56 && GET_CODE (XEXP (and, 1)) == CONST_INT
57 && GET_CODE (XEXP (cond, 1)) == CONST_INT
58 && INTVAL (XEXP (and, 1)) == 3
59 && INTVAL (XEXP (cond, 1)) == 3);
62 ;; TODO: Add a comment here.
64 (define_predicate "and_operand"
65 (match_code "subreg,reg,const_int")
67 if (logical_operand (op, mode))
70 /* Check mshflo.l / mshflhi.l opportunities. */
73 && GET_CODE (op) == CONST_INT
74 && CONST_OK_FOR_J16 (INTVAL (op)))
80 ;; Like arith_reg_dest, but this predicate is defined with
81 ;; define_special_predicate, not define_predicate.
83 (define_special_predicate "any_arith_reg_dest"
84 (match_code "subreg,reg")
86 return arith_reg_dest (op, mode);
89 ;; Like register_operand, but this predicate is defined with
90 ;; define_special_predicate, not define_predicate.
92 (define_special_predicate "any_register_operand"
93 (match_code "subreg,reg")
95 return register_operand (op, mode);
98 ;; Returns 1 if OP is a valid source operand for an arithmetic insn.
100 (define_predicate "arith_operand"
101 (match_code "subreg,reg,const_int,truncate")
103 if (arith_reg_operand (op, mode))
108 /* FIXME: We should be checking whether the CONST_INT fits in a
109 CONST_OK_FOR_I16 here, but this causes reload_cse to crash when
110 attempting to transform a sequence of two 64-bit sets of the
111 same register from literal constants into a set and an add,
112 when the difference is too wide for an add. */
113 if (GET_CODE (op) == CONST_INT
114 || EXTRA_CONSTRAINT_Css (op))
116 else if (GET_CODE (op) == TRUNCATE
117 && ! system_reg_operand (XEXP (op, 0), VOIDmode)
118 && (mode == VOIDmode || mode == GET_MODE (op))
119 && (GET_MODE_SIZE (GET_MODE (op))
120 < GET_MODE_SIZE (GET_MODE (XEXP (op, 0))))
121 && (! FP_REGISTER_P (REGNO (XEXP (op, 0)))
122 || GET_MODE_SIZE (GET_MODE (op)) == 4))
123 return register_operand (XEXP (op, 0), VOIDmode);
127 else if (GET_CODE (op) == CONST_INT && CONST_OK_FOR_I08 (INTVAL (op)))
133 ;; Like above, but for DImode destinations: forbid paradoxical DImode
134 ;; subregs, because this would lead to missing sign extensions when
135 ;; truncating from DImode to SImode.
137 (define_predicate "arith_reg_dest"
138 (match_code "subreg,reg")
140 if (mode == DImode && GET_CODE (op) == SUBREG
141 && GET_MODE_SIZE (GET_MODE (SUBREG_REG (op))) < 8
144 return arith_reg_operand (op, mode);
147 ;; Returns 1 if OP is a normal arithmetic register.
149 (define_predicate "arith_reg_operand"
150 (match_code "subreg,reg,sign_extend")
152 if (register_operand (op, mode))
156 if (GET_CODE (op) == REG)
158 else if (GET_CODE (op) == SUBREG && GET_CODE (SUBREG_REG (op)) == REG)
159 regno = REGNO (SUBREG_REG (op));
163 return (regno != T_REG && regno != PR_REG
164 && ! TARGET_REGISTER_P (regno)
165 && (regno != FPUL_REG || TARGET_SH4)
166 && regno != MACH_REG && regno != MACL_REG);
168 /* Allow a no-op sign extension - compare LOAD_EXTEND_OP.
169 We allow SImode here, as not using an FP register is just a matter of
170 proper register allocation. */
172 && GET_MODE (op) == DImode && GET_CODE (op) == SIGN_EXTEND
173 && GET_MODE (XEXP (op, 0)) == SImode
174 && GET_CODE (XEXP (op, 0)) != SUBREG)
175 return register_operand (XEXP (op, 0), VOIDmode);
176 #if 0 /* Can't do this because of PROMOTE_MODE for unsigned vars. */
177 if (GET_MODE (op) == SImode && GET_CODE (op) == SIGN_EXTEND
178 && GET_MODE (XEXP (op, 0)) == HImode
179 && GET_CODE (XEXP (op, 0)) == REG
180 && REGNO (XEXP (op, 0)) <= LAST_GENERAL_REG)
181 return register_operand (XEXP (op, 0), VOIDmode);
183 if (GET_MODE_CLASS (GET_MODE (op)) == MODE_VECTOR_INT
184 && GET_CODE (op) == SUBREG
185 && GET_MODE (SUBREG_REG (op)) == DImode
186 && GET_CODE (SUBREG_REG (op)) == SIGN_EXTEND
187 && GET_MODE (XEXP (SUBREG_REG (op), 0)) == SImode
188 && GET_CODE (XEXP (SUBREG_REG (op), 0)) != SUBREG)
189 return register_operand (XEXP (SUBREG_REG (op), 0), VOIDmode);
193 ;; Returns 1 if OP is a valid source operand for a compare insn.
195 (define_predicate "arith_reg_or_0_operand"
196 (match_code "subreg,reg,const_int,const_vector")
198 if (arith_reg_operand (op, mode))
201 if (EXTRA_CONSTRAINT_Z (op))
207 ;; TODO: Add a comment here.
209 (define_predicate "binary_float_operator"
210 (and (match_code "plus,minus,mult,div")
211 (match_test "GET_MODE (op) == mode")))
213 ;; TODO: Add a comment here.
215 (define_predicate "binary_logical_operator"
216 (and (match_code "and,ior,xor")
217 (match_test "GET_MODE (op) == mode")))
219 ;; TODO: Add a comment here.
221 (define_predicate "cache_address_operand"
222 (match_code "plus,reg")
224 if (GET_CODE (op) == PLUS)
226 if (GET_CODE (XEXP (op, 0)) != REG)
228 if (GET_CODE (XEXP (op, 1)) != CONST_INT
229 || (INTVAL (XEXP (op, 1)) & 31))
232 else if (GET_CODE (op) != REG)
234 return address_operand (op, mode);
237 ;; Return 1 if OP is a valid source operand for shmedia cmpgt / cmpgtu.
239 (define_predicate "cmp_operand"
240 (match_code "subreg,reg,const_int")
242 if (GET_CODE (op) == CONST_INT && CONST_OK_FOR_N (INTVAL (op)))
245 && mode != DImode && GET_CODE (op) == SUBREG
246 && GET_MODE_SIZE (GET_MODE (SUBREG_REG (op))) > 4)
248 return arith_reg_operand (op, mode);
251 ;; TODO: Add a comment here.
253 (define_predicate "cmpsi_operand"
254 (match_code "subreg,reg,const_int")
256 if (GET_CODE (op) == REG && REGNO (op) == T_REG
257 && GET_MODE (op) == SImode
260 return arith_operand (op, mode);
263 ;; TODO: Add a comment here.
265 (define_predicate "commutative_float_operator"
266 (and (match_code "plus,mult")
267 (match_test "GET_MODE (op) == mode")))
269 ;; TODO: Add a comment here.
271 (define_predicate "equality_comparison_operator"
272 (match_code "eq,ne"))
274 ;; TODO: Add a comment here.
276 (define_predicate "extend_reg_operand"
277 (match_code "subreg,reg,truncate")
279 return (GET_CODE (op) == TRUNCATE
281 : arith_reg_operand) (op, mode);
284 ;; TODO: Add a comment here.
286 (define_predicate "extend_reg_or_0_operand"
287 (match_code "subreg,reg,truncate,const_int")
289 return (GET_CODE (op) == TRUNCATE
291 : arith_reg_or_0_operand) (op, mode);
294 ;; Like arith_reg_operand, but this predicate does not accept SIGN_EXTEND.
296 (define_predicate "ext_dest_operand"
297 (match_code "subreg,reg")
299 return arith_reg_operand (op, mode);
302 ;; TODO: Add a comment here.
304 (define_predicate "fp_arith_reg_dest"
305 (match_code "subreg,reg")
307 if (mode == DImode && GET_CODE (op) == SUBREG
308 && GET_MODE_SIZE (GET_MODE (SUBREG_REG (op))) < 8)
310 return fp_arith_reg_operand (op, mode);
313 ;; TODO: Add a comment here.
315 (define_predicate "fp_arith_reg_operand"
316 (match_code "subreg,reg")
318 if (register_operand (op, mode))
322 if (GET_CODE (op) == REG)
324 else if (GET_CODE (op) == SUBREG && GET_CODE (SUBREG_REG (op)) == REG)
325 regno = REGNO (SUBREG_REG (op));
329 return (regno >= FIRST_PSEUDO_REGISTER
330 || FP_REGISTER_P (regno));
335 ;; TODO: Add a comment here.
337 (define_predicate "fpscr_operand"
340 return (GET_CODE (op) == REG
341 && (REGNO (op) == FPSCR_REG
342 || (REGNO (op) >= FIRST_PSEUDO_REGISTER
343 && !(reload_in_progress || reload_completed)))
344 && GET_MODE (op) == PSImode);
347 ;; TODO: Add a comment here.
349 (define_predicate "fpul_operand"
353 return fp_arith_reg_operand (op, mode);
355 return (GET_CODE (op) == REG
356 && (REGNO (op) == FPUL_REG || REGNO (op) >= FIRST_PSEUDO_REGISTER)
357 && GET_MODE (op) == mode);
360 ;; TODO: Add a comment here.
362 (define_predicate "general_extend_operand"
363 (match_code "subreg,reg,mem,truncate")
365 return (GET_CODE (op) == TRUNCATE
367 : nonimmediate_operand) (op, mode);
370 ;; Returns 1 if OP can be source of a simple move operation. Same as
371 ;; general_operand, but a LABEL_REF is valid, PRE_DEC is invalid as
372 ;; are subregs of system registers.
374 (define_predicate "general_movsrc_operand"
375 (match_code "subreg,reg,const_int,const_double,mem,symbol_ref,label_ref,const,const_vector")
377 if (GET_CODE (op) == MEM)
379 rtx inside = XEXP (op, 0);
380 if (GET_CODE (inside) == CONST)
381 inside = XEXP (inside, 0);
383 if (GET_CODE (inside) == LABEL_REF)
386 if (GET_CODE (inside) == PLUS
387 && GET_CODE (XEXP (inside, 0)) == LABEL_REF
388 && GET_CODE (XEXP (inside, 1)) == CONST_INT)
391 /* Only post inc allowed. */
392 if (GET_CODE (inside) == PRE_DEC)
396 if ((mode == QImode || mode == HImode)
397 && (GET_CODE (op) == SUBREG
398 && GET_CODE (XEXP (op, 0)) == REG
399 && system_reg_operand (XEXP (op, 0), mode)))
403 && (GET_CODE (op) == PARALLEL || GET_CODE (op) == CONST_VECTOR)
404 && sh_rep_vec (op, mode))
406 if (TARGET_SHMEDIA && 1
407 && GET_CODE (op) == SUBREG && GET_MODE (op) == mode
408 && SUBREG_REG (op) == const0_rtx && subreg_lowpart_p (op))
409 /* FIXME */ abort (); /* return 1; */
410 return general_operand (op, mode);
413 ;; Returns 1 if OP can be a destination of a move. Same as
414 ;; general_operand, but no preinc allowed.
416 (define_predicate "general_movdst_operand"
417 (match_code "subreg,reg,mem")
419 /* Only pre dec allowed. */
420 if (GET_CODE (op) == MEM && GET_CODE (XEXP (op, 0)) == POST_INC)
422 if (mode == DImode && TARGET_SHMEDIA && GET_CODE (op) == SUBREG
423 && GET_MODE_SIZE (GET_MODE (SUBREG_REG (op))) < 8
424 && ! (high_life_started || reload_completed))
427 return general_operand (op, mode);
430 ;; Returns 1 if OP is a MEM that can be source of a simple move operation.
432 (define_predicate "unaligned_load_operand"
437 if (GET_CODE (op) != MEM || GET_MODE (op) != mode)
440 inside = XEXP (op, 0);
442 if (GET_CODE (inside) == POST_INC)
443 inside = XEXP (inside, 0);
445 if (GET_CODE (inside) == REG)
451 ;; TODO: Add a comment here.
453 (define_predicate "greater_comparison_operator"
454 (match_code "gt,ge,gtu,geu"))
456 ;; TODO: Add a comment here.
458 (define_predicate "inqhi_operand"
459 (match_code "truncate")
461 if (GET_CODE (op) != TRUNCATE || mode != GET_MODE (op))
464 /* Can't use true_regnum here because copy_cost wants to know about
465 SECONDARY_INPUT_RELOAD_CLASS. */
466 return GET_CODE (op) == REG && FP_REGISTER_P (REGNO (op));
469 ;; TODO: Add a comment here.
471 (define_special_predicate "int_gpr_dest"
472 (match_code "subreg,reg")
474 enum machine_mode op_mode = GET_MODE (op);
476 if (GET_MODE_CLASS (op_mode) != MODE_INT
477 || GET_MODE_SIZE (op_mode) >= UNITS_PER_WORD)
479 if (! reload_completed)
481 return true_regnum (op) <= LAST_GENERAL_REG;
484 ;; TODO: Add a comment here.
486 (define_predicate "less_comparison_operator"
487 (match_code "lt,le,ltu,leu"))
489 ;; Returns 1 if OP is a valid source operand for a logical operation.
491 (define_predicate "logical_operand"
492 (match_code "subreg,reg,const_int")
495 && mode != DImode && GET_CODE (op) == SUBREG
496 && GET_MODE_SIZE (GET_MODE (SUBREG_REG (op))) > 4)
499 if (arith_reg_operand (op, mode))
504 if (GET_CODE (op) == CONST_INT && CONST_OK_FOR_I10 (INTVAL (op)))
509 else if (GET_CODE (op) == CONST_INT && CONST_OK_FOR_K08 (INTVAL (op)))
515 ;; TODO: Add a comment here.
517 (define_predicate "logical_operator"
518 (match_code "and,ior,xor"))
520 ;; Like arith_reg_operand, but for register source operands of narrow
521 ;; logical SHMEDIA operations: forbid subregs of DImode / TImode regs.
523 (define_predicate "logical_reg_operand"
524 (match_code "subreg,reg")
527 && GET_CODE (op) == SUBREG
528 && GET_MODE_SIZE (GET_MODE (SUBREG_REG (op))) > 4
531 return arith_reg_operand (op, mode);
534 ;; TODO: Add a comment here.
536 (define_predicate "mextr_bit_offset"
537 (match_code "const_int")
541 if (GET_CODE (op) != CONST_INT)
544 return i >= 1 * 8 && i <= 7 * 8 && (i & 7) == 0;
547 ;; TODO: Add a comment here.
549 (define_predicate "minuend_operand"
550 (match_code "subreg,reg,truncate,const_int")
552 return op == constm1_rtx || extend_reg_or_0_operand (op, mode);
555 ;; TODO: Add a comment here.
557 (define_predicate "noncommutative_float_operator"
558 (and (match_code "minus,div")
559 (match_test "GET_MODE (op) == mode")))
561 ;; TODO: Add a comment here.
563 (define_predicate "sh_const_vec"
564 (match_code "const_vector")
568 if (GET_CODE (op) != CONST_VECTOR
569 || (GET_MODE (op) != mode && mode != VOIDmode))
571 i = XVECLEN (op, 0) - 1;
573 if (GET_CODE (XVECEXP (op, 0, i)) != CONST_INT)
578 ;; Determine if OP is a constant vector matching MODE with only one
579 ;; element that is not a sign extension. Two byte-sized elements
582 (define_predicate "sh_1el_vec"
583 (match_code "const_vector")
586 int i, last, least, sign_ix;
589 if (GET_CODE (op) != CONST_VECTOR
590 || (GET_MODE (op) != mode && mode != VOIDmode))
592 /* Determine numbers of last and of least significant elements. */
593 last = XVECLEN (op, 0) - 1;
594 least = TARGET_LITTLE_ENDIAN ? 0 : last;
595 if (GET_CODE (XVECEXP (op, 0, least)) != CONST_INT)
598 if (GET_MODE_UNIT_SIZE (mode) == 1)
599 sign_ix = TARGET_LITTLE_ENDIAN ? 1 : last - 1;
600 if (GET_CODE (XVECEXP (op, 0, sign_ix)) != CONST_INT)
602 unit_size = GET_MODE_UNIT_SIZE (GET_MODE (op));
603 sign = (INTVAL (XVECEXP (op, 0, sign_ix)) >> (unit_size * BITS_PER_UNIT - 1)
604 ? constm1_rtx : const0_rtx);
605 i = XVECLEN (op, 0) - 1;
607 if (i != least && i != sign_ix && XVECEXP (op, 0, i) != sign)
613 ;; Like register_operand, but take into account that SHMEDIA can use
614 ;; the constant zero like a general register.
616 (define_predicate "sh_register_operand"
617 (match_code "reg,subreg,const_int,const_double")
619 if (op == CONST0_RTX (mode) && TARGET_SHMEDIA)
621 return register_operand (op, mode);
624 ;; TODO: Add a comment here.
626 (define_predicate "sh_rep_vec"
627 (match_code "const_vector,parallel")
632 if ((GET_CODE (op) != CONST_VECTOR && GET_CODE (op) != PARALLEL)
633 || (GET_MODE (op) != mode && mode != VOIDmode))
635 i = XVECLEN (op, 0) - 2;
636 x = XVECEXP (op, 0, i + 1);
637 if (GET_MODE_UNIT_SIZE (mode) == 1)
639 y = XVECEXP (op, 0, i);
640 for (i -= 2; i >= 0; i -= 2)
641 if (! rtx_equal_p (XVECEXP (op, 0, i + 1), x)
642 || ! rtx_equal_p (XVECEXP (op, 0, i), y))
647 if (XVECEXP (op, 0, i) != x)
652 ;; TODO: Add a comment here.
654 (define_predicate "shift_count_operand"
655 (match_code "const_int,const_double,const,symbol_ref,label_ref,subreg,reg,zero_extend,sign_extend")
657 return (CONSTANT_P (op)
658 ? (GET_CODE (op) == CONST_INT
659 ? (unsigned) INTVAL (op) < GET_MODE_BITSIZE (mode)
660 : nonmemory_operand (op, mode))
661 : shift_count_reg_operand (op, mode));
664 ;; TODO: Add a comment here.
666 (define_predicate "shift_count_reg_operand"
667 (match_code "subreg,reg,zero_extend,sign_extend")
669 if ((GET_CODE (op) == ZERO_EXTEND || GET_CODE (op) == SIGN_EXTEND
670 || (GET_CODE (op) == SUBREG && SUBREG_BYTE (op) == 0))
671 && (mode == VOIDmode || mode == GET_MODE (op))
672 && GET_MODE_BITSIZE (GET_MODE (XEXP (op, 0))) >= 6
673 && GET_MODE_CLASS (GET_MODE (XEXP (op, 0))) == MODE_INT)
678 while ((GET_CODE (op) == ZERO_EXTEND || GET_CODE (op) == SIGN_EXTEND
679 || GET_CODE (op) == TRUNCATE)
680 && GET_MODE_BITSIZE (GET_MODE (XEXP (op, 0))) >= 6
681 && GET_MODE_CLASS (GET_MODE (XEXP (op, 0))) == MODE_INT);
684 return arith_reg_operand (op, mode);
687 ;; TODO: Add a comment here.
689 (define_predicate "shift_operator"
690 (match_code "ashift,ashiftrt,lshiftrt"))
692 ;; TODO: Add a comment here.
694 (define_predicate "symbol_ref_operand"
695 (match_code "symbol_ref"))
697 ;; Same as target_reg_operand, except that label_refs and symbol_refs
698 ;; are accepted before reload.
700 (define_special_predicate "target_operand"
701 (match_code "subreg,reg,label_ref,symbol_ref,const,unspec")
703 if (mode != VOIDmode && mode != Pmode)
706 if ((GET_MODE (op) == Pmode || GET_MODE (op) == VOIDmode)
707 && EXTRA_CONSTRAINT_Csy (op))
708 return ! reload_completed;
710 return target_reg_operand (op, mode);
713 ;; Accept pseudos and branch target registers.
715 (define_special_predicate "target_reg_operand"
716 (match_code "subreg,reg")
719 ? GET_MODE (op) != Pmode && GET_MODE (op) != PDImode
720 : mode != GET_MODE (op))
723 if (GET_CODE (op) == SUBREG)
726 if (GET_CODE (op) != REG)
729 /* We must protect ourselves from matching pseudos that are virtual
730 register, because they will eventually be replaced with hardware
731 registers that aren't branch-target registers. */
732 if (REGNO (op) > LAST_VIRTUAL_REGISTER
733 || TARGET_REGISTER_P (REGNO (op)))
739 ;; TODO: Add a comment here.
741 (define_special_predicate "trunc_hi_operand"
742 (match_code "subreg,reg,truncate")
744 enum machine_mode op_mode = GET_MODE (op);
746 if (op_mode != SImode && op_mode != DImode
747 && op_mode != V4HImode && op_mode != V2SImode)
749 return extend_reg_operand (op, mode);
752 ;; TODO: Add a comment here.
754 (define_predicate "ua_address_operand"
755 (match_code "subreg,reg,plus")
757 if (GET_CODE (op) == PLUS
758 && (GET_CODE (XEXP (op, 1)) != CONST_INT
759 || ! CONST_OK_FOR_I06 (INTVAL (XEXP (op, 1)))))
761 return address_operand (op, QImode);
764 ;; TODO: Add a comment here.
766 (define_predicate "ua_offset"
767 (match_code "const_int")
769 return GET_CODE (op) == CONST_INT && CONST_OK_FOR_I06 (INTVAL (op));
772 ;; TODO: Add a comment here.
774 (define_predicate "unary_float_operator"
775 (and (match_code "abs,neg,sqrt")
776 (match_test "GET_MODE (op) == mode")))
778 ;; Return 1 if OP is a valid source operand for xor.
780 (define_predicate "xor_operand"
781 (match_code "subreg,reg,const_int")
783 if (GET_CODE (op) == CONST_INT)
784 return (TARGET_SHMEDIA
785 ? (CONST_OK_FOR_I06 (INTVAL (op))
786 || (no_new_pseudos && INTVAL (op) == 0xff))
787 : CONST_OK_FOR_K08 (INTVAL (op)));
789 && mode != DImode && GET_CODE (op) == SUBREG
790 && GET_MODE_SIZE (GET_MODE (SUBREG_REG (op))) > 4)
792 return arith_reg_operand (op, mode);