1 ;; Predicate definitions for SPARC.
2 ;; Copyright (C) 2005 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 ;; Predicates for numerical constants.
23 ;; Return true if OP is the zero constant for MODE.
24 (define_predicate "const_zero_operand"
25 (and (match_code "const_int,const_double,const_vector")
26 (match_test "op == CONST0_RTX (mode)")))
28 ;; Return true if OP is the one constant for MODE.
29 (define_predicate "const_one_operand"
30 (and (match_code "const_int,const_double,const_vector")
31 (match_test "op == CONST1_RTX (mode)")))
33 ;; Return true if OP is the integer constant 4096.
34 (define_predicate "const_4096_operand"
35 (and (match_code "const_int")
36 (match_test "INTVAL (op) == 4096")))
38 ;; Return true if OP is a constant that is representable by a 13-bit
39 ;; signed field. This is an acceptable immediate operand for most
40 ;; 3-address instructions.
41 (define_predicate "small_int_operand"
42 (and (match_code "const_int")
43 (match_test "SPARC_SIMM13_P (INTVAL (op))")))
45 ;; Return true if OP is a constant operand for the umul instruction. That
46 ;; instruction sign-extends immediate values just like all other SPARC
47 ;; instructions, but interprets the extended result as an unsigned number.
48 (define_predicate "uns_small_int_operand"
49 (match_code "const_int,const_double")
51 #if HOST_BITS_PER_WIDE_INT == 32
52 return ((GET_CODE (op) == CONST_INT && (unsigned) INTVAL (op) < 0x1000)
53 || (GET_CODE (op) == CONST_DOUBLE
54 && CONST_DOUBLE_HIGH (op) == 0
55 && (unsigned) CONST_DOUBLE_LOW (op) - 0xFFFFF000 < 0x1000));
57 return (GET_CODE (op) == CONST_INT
58 && ((INTVAL (op) >= 0 && INTVAL (op) < 0x1000)
59 || (INTVAL (op) >= 0xFFFFF000
60 && INTVAL (op) <= 0xFFFFFFFF)));
64 ;; Return true if OP is a constant that can be loaded by the sethi instruction.
65 ;; The first test avoids emitting sethi to load zero for example.
66 (define_predicate "const_high_operand"
67 (and (match_code "const_int")
68 (and (not (match_operand 0 "small_int_operand"))
69 (match_test "SPARC_SETHI_P (INTVAL (op) & GET_MODE_MASK (mode))"))))
71 ;; Return true if OP is a constant whose 1's complement can be loaded by the
73 (define_predicate "const_compl_high_operand"
74 (and (match_code "const_int")
75 (and (not (match_operand 0 "small_int_operand"))
76 (match_test "SPARC_SETHI_P (~INTVAL (op) & GET_MODE_MASK (mode))"))))
78 ;; Return true if OP is a FP constant that needs to be loaded by the sethi/losum
79 ;; pair of instructions.
80 (define_predicate "fp_const_high_losum_operand"
81 (match_operand 0 "const_double_operand")
83 gcc_assert (mode == SFmode);
84 return fp_high_losum_p (op);
88 ;; Predicates for symbolic constants.
90 ;; Return true if OP is either a symbol reference or a sum of a symbol
91 ;; reference and a constant.
92 (define_predicate "symbolic_operand"
93 (match_code "symbol_ref,label_ref,const")
95 enum machine_mode omode = GET_MODE (op);
97 if (omode != mode && omode != VOIDmode && mode != VOIDmode)
100 switch (GET_CODE (op))
103 return !SYMBOL_REF_TLS_MODEL (op);
110 return (((GET_CODE (XEXP (op, 0)) == SYMBOL_REF
111 && !SYMBOL_REF_TLS_MODEL (XEXP (op, 0)))
112 || GET_CODE (XEXP (op, 0)) == LABEL_REF)
113 && GET_CODE (XEXP (op, 1)) == CONST_INT);
120 ;; Return true if OP is a symbolic operand for the TLS Global Dynamic model.
121 (define_predicate "tgd_symbolic_operand"
122 (and (match_code "symbol_ref")
123 (match_test "SYMBOL_REF_TLS_MODEL (op) == TLS_MODEL_GLOBAL_DYNAMIC")))
125 ;; Return true if OP is a symbolic operand for the TLS Local Dynamic model.
126 (define_predicate "tld_symbolic_operand"
127 (and (match_code "symbol_ref")
128 (match_test "SYMBOL_REF_TLS_MODEL (op) == TLS_MODEL_LOCAL_DYNAMIC")))
130 ;; Return true if OP is a symbolic operand for the TLS Initial Exec model.
131 (define_predicate "tie_symbolic_operand"
132 (and (match_code "symbol_ref")
133 (match_test "SYMBOL_REF_TLS_MODEL (op) == TLS_MODEL_INITIAL_EXEC")))
135 ;; Return true if OP is a symbolic operand for the TLS Local Exec model.
136 (define_predicate "tle_symbolic_operand"
137 (and (match_code "symbol_ref")
138 (match_test "SYMBOL_REF_TLS_MODEL (op) == TLS_MODEL_LOCAL_EXEC")))
140 ;; Return true if the operand is an argument used in generating PIC references
141 ;; in either the medium/low or embedded medium/anywhere code models on V9.
142 ;; Check for (const (minus (symbol_ref:GOT)
143 ;; (const (minus (label) (pc)))))
144 (define_predicate "medium_pic_operand"
147 /* Check for (const (minus (symbol_ref:GOT)
148 (const (minus (label) (pc))))). */
150 return GET_CODE (op) == MINUS
151 && GET_CODE (XEXP (op, 0)) == SYMBOL_REF
152 && GET_CODE (XEXP (op, 1)) == CONST
153 && GET_CODE (XEXP (XEXP (op, 1), 0)) == MINUS;
156 ;; Return true if OP is a LABEL_REF of mode MODE.
157 (define_predicate "label_ref_operand"
158 (and (match_code "label_ref")
159 (match_test "GET_MODE (op) == mode")))
161 ;; Return true if OP is a data segment reference. This includes the readonly
162 ;; data segment or, in other words, anything but the text segment.
163 ;; This is needed in the embedded medium/anywhere code model on V9. These
164 ;; values are accessed with EMBMEDANY_BASE_REG. */
165 (define_predicate "data_segment_operand"
166 (match_code "symbol_ref,plus,const")
168 switch (GET_CODE (op))
171 return ! SYMBOL_REF_FUNCTION_P (op);
173 /* Assume canonical format of symbol + constant.
176 return data_segment_operand (XEXP (op, 0), VOIDmode);
182 ;; Return true if OP is a text segment reference.
183 ;; This is needed in the embedded medium/anywhere code model on V9.
184 (define_predicate "text_segment_operand"
185 (match_code "label_ref,symbol_ref,plus,const")
187 switch (GET_CODE (op))
192 return SYMBOL_REF_FUNCTION_P (op);
194 /* Assume canonical format of symbol + constant.
197 return text_segment_operand (XEXP (op, 0), VOIDmode);
204 ;; Predicates for registers.
206 ;; Return true if OP is either the zero constant or a register.
207 (define_predicate "register_or_zero_operand"
208 (ior (match_operand 0 "register_operand")
209 (match_operand 0 "const_zero_operand")))
211 ;; Return true if OP is a register operand in a floating point register.
212 (define_predicate "fp_register_operand"
213 (match_operand 0 "register_operand")
215 if (GET_CODE (op) == SUBREG)
216 op = SUBREG_REG (op); /* Possibly a MEM */
217 return REG_P (op) && SPARC_FP_REG_P (REGNO (op));
220 ;; Return true if OP is an integer register.
221 (define_special_predicate "int_register_operand"
222 (ior (match_test "register_operand (op, SImode)")
223 (match_test "TARGET_ARCH64 && register_operand (op, DImode)")))
225 ;; Return true if OP is a floating point condition code register.
226 (define_predicate "fcc_register_operand"
229 if (mode != VOIDmode && mode != GET_MODE (op))
232 && (GET_MODE (op) != CCFPmode && GET_MODE (op) != CCFPEmode))
235 #if 0 /* ??? 1 when %fcc0-3 are pseudos first. See gen_compare_reg(). */
236 if (reg_renumber == 0)
237 return REGNO (op) >= FIRST_PSEUDO_REGISTER;
238 return REGNO_OK_FOR_CCFP_P (REGNO (op));
240 return ((unsigned) REGNO (op) - SPARC_FIRST_V9_FCC_REG) < 4;
244 ;; Return true if OP is the floating point condition code register fcc0.
245 (define_predicate "fcc0_register_operand"
248 if (mode != VOIDmode && mode != GET_MODE (op))
251 && (GET_MODE (op) != CCFPmode && GET_MODE (op) != CCFPEmode))
254 return REGNO (op) == SPARC_FCC_REG;
257 ;; Return true if OP is an integer or floating point condition code register.
258 (define_predicate "icc_or_fcc_register_operand"
261 if (REGNO (op) == SPARC_ICC_REG)
263 if (mode != VOIDmode && mode != GET_MODE (op))
266 && GET_MODE (op) != CCmode && GET_MODE (op) != CCXmode)
272 return fcc_register_operand (op, mode);
276 ;; Predicates for arithmetic instructions.
278 ;; Return true if OP is a register, or is a constant that is representable
279 ;; by a 13-bit signed field. This is an acceptable operand for most
280 ;; 3-address instructions.
281 (define_predicate "arith_operand"
282 (ior (match_operand 0 "register_operand")
283 (match_operand 0 "small_int_operand")))
285 ;; 64-bit: Same as above.
286 ;; 32-bit: Return true if OP is a register, or is a constant that is
287 ;; representable by a couple of 13-bit signed fields. This is an
288 ;; acceptable operand for most 3-address splitters.
289 (define_predicate "arith_double_operand"
290 (match_code "const_int,const_double,reg,subreg")
292 bool arith_simple_operand = arith_operand (op, mode);
293 HOST_WIDE_INT m1, m2;
295 if (TARGET_ARCH64 || arith_simple_operand)
296 return arith_simple_operand;
298 #if HOST_BITS_PER_WIDE_INT == 32
299 if (GET_CODE (op) != CONST_DOUBLE)
301 m1 = CONST_DOUBLE_LOW (op);
302 m2 = CONST_DOUBLE_HIGH (op);
304 if (GET_CODE (op) != CONST_INT)
306 m1 = trunc_int_for_mode (INTVAL (op), SImode);
307 m2 = trunc_int_for_mode (INTVAL (op) >> 32, SImode);
310 return SPARC_SIMM13_P (m1) && SPARC_SIMM13_P (m2);
313 ;; Return true if OP is suitable as second operand for add/sub.
314 (define_predicate "arith_add_operand"
315 (ior (match_operand 0 "arith_operand")
316 (match_operand 0 "const_4096_operand")))
318 ;; Return true if OP is suitable as second double operand for add/sub.
319 (define_predicate "arith_double_add_operand"
320 (match_code "const_int,const_double,reg,subreg")
322 bool _arith_double_operand = arith_double_operand (op, mode);
324 if (_arith_double_operand)
327 return TARGET_ARCH64 && const_4096_operand (op, mode);
330 ;; Return true if OP is a register, or is a CONST_INT that can fit in a
331 ;; signed 10-bit immediate field. This is an acceptable SImode operand for
332 ;; the movrcc instructions.
333 (define_predicate "arith10_operand"
334 (ior (match_operand 0 "register_operand")
335 (and (match_code "const_int")
336 (match_test "SPARC_SIMM10_P (INTVAL (op))"))))
338 ;; Return true if OP is a register, or is a CONST_INT that can fit in a
339 ;; signed 11-bit immediate field. This is an acceptable SImode operand for
340 ;; the movcc instructions.
341 (define_predicate "arith11_operand"
342 (ior (match_operand 0 "register_operand")
343 (and (match_code "const_int")
344 (match_test "SPARC_SIMM11_P (INTVAL (op))"))))
346 ;; Return true if OP is a register or a constant for the umul instruction.
347 (define_predicate "uns_arith_operand"
348 (ior (match_operand 0 "register_operand")
349 (match_operand 0 "uns_small_int_operand")))
352 ;; Predicates for miscellaneous instructions.
354 ;; Return true if OP is valid for the lhs of a comparison insn.
355 (define_predicate "compare_operand"
356 (match_code "reg,subreg,zero_extract")
358 if (GET_CODE (op) == ZERO_EXTRACT)
359 return (register_operand (XEXP (op, 0), mode)
360 && small_int_operand (XEXP (op, 1), mode)
361 && small_int_operand (XEXP (op, 2), mode)
362 /* This matches cmp_zero_extract. */
364 && INTVAL (XEXP (op, 2)) > 19)
365 /* This matches cmp_zero_extract_sp64. */
368 && INTVAL (XEXP (op, 2)) > 51)));
370 return register_operand (op, mode);
373 ;; Return true if OP is a valid operand for the source of a move insn.
374 (define_predicate "input_operand"
375 (match_code "const_int,const_double,const_vector,reg,subreg,mem")
377 enum mode_class mclass;
379 /* If both modes are non-void they must be the same. */
380 if (mode != VOIDmode && GET_MODE (op) != VOIDmode && mode != GET_MODE (op))
383 mclass = GET_MODE_CLASS (mode);
385 /* Allow any 1-instruction integer constant. */
386 if (mclass == MODE_INT
387 && (small_int_operand (op, mode) || const_high_operand (op, mode)))
390 /* If 32-bit mode and this is a DImode constant, allow it
391 so that the splits can be generated. */
394 && (GET_CODE (op) == CONST_DOUBLE || GET_CODE (op) == CONST_INT))
397 if ((mclass == MODE_FLOAT && GET_CODE (op) == CONST_DOUBLE)
398 || (mclass == MODE_VECTOR_INT && GET_CODE (op) == CONST_VECTOR))
401 if (register_operand (op, mode))
404 /* If this is a SUBREG, look inside so that we handle paradoxical ones. */
405 if (GET_CODE (op) == SUBREG)
406 op = SUBREG_REG (op);
408 /* Check for valid MEM forms. */
409 if (GET_CODE (op) == MEM)
410 return memory_address_p (mode, XEXP (op, 0));
415 ;; Return true if OP is an address suitable for a call insn.
416 ;; Call insn on SPARC can take a PC-relative constant address
417 ;; or any regular memory address.
418 (define_predicate "call_address_operand"
419 (ior (match_operand 0 "symbolic_operand")
420 (match_test "memory_address_p (Pmode, op)")))
422 ;; Return true if OP is an operand suitable for a call insn.
423 (define_predicate "call_operand"
424 (and (match_code "mem")
425 (match_test "call_address_operand (XEXP (op, 0), mode)")))
428 ;; Predicates for operators.
430 ;; Return true if OP is a comparison operator. This allows the use of
431 ;; MATCH_OPERATOR to recognize all the branch insns.
432 (define_predicate "noov_compare_operator"
433 (match_code "ne,eq,ge,gt,le,lt,geu,gtu,leu,ltu")
435 enum rtx_code code = GET_CODE (op);
436 if (GET_MODE (XEXP (op, 0)) == CC_NOOVmode
437 || GET_MODE (XEXP (op, 0)) == CCX_NOOVmode)
438 /* These are the only branches which work with CC_NOOVmode. */
439 return (code == EQ || code == NE || code == GE || code == LT);
443 ;; Return true if OP is a 64-bit comparison operator. This allows the use of
444 ;; MATCH_OPERATOR to recognize all the branch insns.
445 (define_predicate "noov_compare64_operator"
446 (and (match_code "ne,eq,ge,gt,le,lt,geu,gtu,leu,ltu")
447 (match_test "TARGET_V9"))
449 enum rtx_code code = GET_CODE (op);
450 if (GET_MODE (XEXP (op, 0)) == CCX_NOOVmode)
451 /* These are the only branches which work with CCX_NOOVmode. */
452 return (code == EQ || code == NE || code == GE || code == LT);
453 return (GET_MODE (XEXP (op, 0)) == CCXmode);
456 ;; Return true if OP is a comparison operator suitable for use in V9
457 ;; conditional move or branch on register contents instructions.
458 (define_predicate "v9_register_compare_operator"
459 (match_code "eq,ne,ge,lt,le,gt"))
461 ;; Return true if OP is an operator which can set the condition codes
462 ;; explicitly. We do not include PLUS and MINUS because these
463 ;; require CC_NOOVmode, which we handle explicitly.
464 (define_predicate "cc_arith_operator"
465 (match_code "and,ior,xor"))
467 ;; Return true if OP is an operator which can bitwise complement its
468 ;; second operand and set the condition codes explicitly.
469 ;; XOR is not here because combine canonicalizes (xor (not ...) ...)
470 ;; and (xor ... (not ...)) to (not (xor ...)). */
471 (define_predicate "cc_arith_not_operator"
472 (match_code "and,ior"))