1 ;; Predicate definitions for SPARC.
2 ;; Copyright (C) 2005, 2007 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 3, 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 COPYING3. If not see
18 ;; <http://www.gnu.org/licenses/>.
20 ;; Predicates for numerical constants.
22 ;; Return true if OP is the zero constant for MODE.
23 (define_predicate "const_zero_operand"
24 (and (match_code "const_int,const_double,const_vector")
25 (match_test "op == CONST0_RTX (mode)")))
27 ;; Return true if OP is the one constant for MODE.
28 (define_predicate "const_one_operand"
29 (and (match_code "const_int,const_double,const_vector")
30 (match_test "op == CONST1_RTX (mode)")))
32 ;; Return true if OP is the integer constant 4096.
33 (define_predicate "const_4096_operand"
34 (and (match_code "const_int")
35 (match_test "INTVAL (op) == 4096")))
37 ;; Return true if OP is a constant that is representable by a 13-bit
38 ;; signed field. This is an acceptable immediate operand for most
39 ;; 3-address instructions.
40 (define_predicate "small_int_operand"
41 (and (match_code "const_int")
42 (match_test "SPARC_SIMM13_P (INTVAL (op))")))
44 ;; Return true if OP is a constant operand for the umul instruction. That
45 ;; instruction sign-extends immediate values just like all other SPARC
46 ;; instructions, but interprets the extended result as an unsigned number.
47 (define_predicate "uns_small_int_operand"
48 (match_code "const_int,const_double")
50 #if HOST_BITS_PER_WIDE_INT == 32
51 return ((GET_CODE (op) == CONST_INT && (unsigned) INTVAL (op) < 0x1000)
52 || (GET_CODE (op) == CONST_DOUBLE
53 && CONST_DOUBLE_HIGH (op) == 0
54 && (unsigned) CONST_DOUBLE_LOW (op) - 0xFFFFF000 < 0x1000));
56 return (GET_CODE (op) == CONST_INT
57 && ((INTVAL (op) >= 0 && INTVAL (op) < 0x1000)
58 || (INTVAL (op) >= 0xFFFFF000
59 && INTVAL (op) <= 0xFFFFFFFF)));
63 ;; Return true if OP is a constant that can be loaded by the sethi instruction.
64 ;; The first test avoids emitting sethi to load zero for example.
65 (define_predicate "const_high_operand"
66 (and (match_code "const_int")
67 (and (not (match_operand 0 "small_int_operand"))
68 (match_test "SPARC_SETHI_P (INTVAL (op) & GET_MODE_MASK (mode))"))))
70 ;; Return true if OP is a constant whose 1's complement can be loaded by the
72 (define_predicate "const_compl_high_operand"
73 (and (match_code "const_int")
74 (and (not (match_operand 0 "small_int_operand"))
75 (match_test "SPARC_SETHI_P (~INTVAL (op) & GET_MODE_MASK (mode))"))))
77 ;; Return true if OP is a FP constant that needs to be loaded by the sethi/losum
78 ;; pair of instructions.
79 (define_predicate "fp_const_high_losum_operand"
80 (match_operand 0 "const_double_operand")
82 gcc_assert (mode == SFmode);
83 return fp_high_losum_p (op);
87 ;; Predicates for symbolic constants.
89 ;; Return true if OP is either a symbol reference or a sum of a symbol
90 ;; reference and a constant.
91 (define_predicate "symbolic_operand"
92 (match_code "symbol_ref,label_ref,const")
94 enum machine_mode omode = GET_MODE (op);
96 if (omode != mode && omode != VOIDmode && mode != VOIDmode)
99 switch (GET_CODE (op))
102 return !SYMBOL_REF_TLS_MODEL (op);
109 return (((GET_CODE (XEXP (op, 0)) == SYMBOL_REF
110 && !SYMBOL_REF_TLS_MODEL (XEXP (op, 0)))
111 || GET_CODE (XEXP (op, 0)) == LABEL_REF)
112 && GET_CODE (XEXP (op, 1)) == CONST_INT);
119 ;; Return true if OP is a symbolic operand for the TLS Global Dynamic model.
120 (define_predicate "tgd_symbolic_operand"
121 (and (match_code "symbol_ref")
122 (match_test "SYMBOL_REF_TLS_MODEL (op) == TLS_MODEL_GLOBAL_DYNAMIC")))
124 ;; Return true if OP is a symbolic operand for the TLS Local Dynamic model.
125 (define_predicate "tld_symbolic_operand"
126 (and (match_code "symbol_ref")
127 (match_test "SYMBOL_REF_TLS_MODEL (op) == TLS_MODEL_LOCAL_DYNAMIC")))
129 ;; Return true if OP is a symbolic operand for the TLS Initial Exec model.
130 (define_predicate "tie_symbolic_operand"
131 (and (match_code "symbol_ref")
132 (match_test "SYMBOL_REF_TLS_MODEL (op) == TLS_MODEL_INITIAL_EXEC")))
134 ;; Return true if OP is a symbolic operand for the TLS Local Exec model.
135 (define_predicate "tle_symbolic_operand"
136 (and (match_code "symbol_ref")
137 (match_test "SYMBOL_REF_TLS_MODEL (op) == TLS_MODEL_LOCAL_EXEC")))
139 ;; Return true if the operand is an argument used in generating PIC references
140 ;; in either the medium/low or embedded medium/anywhere code models on V9.
141 ;; Check for (const (minus (symbol_ref:GOT)
142 ;; (const (minus (label) (pc)))))
143 (define_predicate "medium_pic_operand"
146 /* Check for (const (minus (symbol_ref:GOT)
147 (const (minus (label) (pc))))). */
149 return GET_CODE (op) == MINUS
150 && GET_CODE (XEXP (op, 0)) == SYMBOL_REF
151 && GET_CODE (XEXP (op, 1)) == CONST
152 && GET_CODE (XEXP (XEXP (op, 1), 0)) == MINUS;
155 ;; Return true if OP is a LABEL_REF of mode MODE.
156 (define_predicate "label_ref_operand"
157 (and (match_code "label_ref")
158 (match_test "GET_MODE (op) == mode")))
160 ;; Return true if OP is a data segment reference. This includes the readonly
161 ;; data segment or, in other words, anything but the text segment.
162 ;; This is needed in the embedded medium/anywhere code model on V9. These
163 ;; values are accessed with EMBMEDANY_BASE_REG. */
164 (define_predicate "data_segment_operand"
165 (match_code "symbol_ref,plus,const")
167 switch (GET_CODE (op))
170 return ! SYMBOL_REF_FUNCTION_P (op);
172 /* Assume canonical format of symbol + constant.
175 return data_segment_operand (XEXP (op, 0), VOIDmode);
181 ;; Return true if OP is a text segment reference.
182 ;; This is needed in the embedded medium/anywhere code model on V9.
183 (define_predicate "text_segment_operand"
184 (match_code "label_ref,symbol_ref,plus,const")
186 switch (GET_CODE (op))
191 return SYMBOL_REF_FUNCTION_P (op);
193 /* Assume canonical format of symbol + constant.
196 return text_segment_operand (XEXP (op, 0), VOIDmode);
203 ;; Predicates for registers.
205 ;; Return true if OP is either the zero constant or a register.
206 (define_predicate "register_or_zero_operand"
207 (ior (match_operand 0 "register_operand")
208 (match_operand 0 "const_zero_operand")))
210 ;; Return true if OP is a register operand in a floating point register.
211 (define_predicate "fp_register_operand"
212 (match_operand 0 "register_operand")
214 if (GET_CODE (op) == SUBREG)
215 op = SUBREG_REG (op); /* Possibly a MEM */
216 return REG_P (op) && SPARC_FP_REG_P (REGNO (op));
219 ;; Return true if OP is an integer register.
220 (define_special_predicate "int_register_operand"
221 (ior (match_test "register_operand (op, SImode)")
222 (match_test "TARGET_ARCH64 && register_operand (op, DImode)")))
224 ;; Return true if OP is a floating point condition code register.
225 (define_predicate "fcc_register_operand"
228 if (mode != VOIDmode && mode != GET_MODE (op))
231 && (GET_MODE (op) != CCFPmode && GET_MODE (op) != CCFPEmode))
234 #if 0 /* ??? 1 when %fcc0-3 are pseudos first. See gen_compare_reg(). */
235 if (reg_renumber == 0)
236 return REGNO (op) >= FIRST_PSEUDO_REGISTER;
237 return REGNO_OK_FOR_CCFP_P (REGNO (op));
239 return ((unsigned) REGNO (op) - SPARC_FIRST_V9_FCC_REG) < 4;
243 ;; Return true if OP is the floating point condition code register fcc0.
244 (define_predicate "fcc0_register_operand"
247 if (mode != VOIDmode && mode != GET_MODE (op))
250 && (GET_MODE (op) != CCFPmode && GET_MODE (op) != CCFPEmode))
253 return REGNO (op) == SPARC_FCC_REG;
256 ;; Return true if OP is an integer or floating point condition code register.
257 (define_predicate "icc_or_fcc_register_operand"
260 if (REGNO (op) == SPARC_ICC_REG)
262 if (mode != VOIDmode && mode != GET_MODE (op))
265 && GET_MODE (op) != CCmode && GET_MODE (op) != CCXmode)
271 return fcc_register_operand (op, mode);
275 ;; Predicates for arithmetic instructions.
277 ;; Return true if OP is a register, or is a constant that is representable
278 ;; by a 13-bit signed field. This is an acceptable operand for most
279 ;; 3-address instructions.
280 (define_predicate "arith_operand"
281 (ior (match_operand 0 "register_operand")
282 (match_operand 0 "small_int_operand")))
284 ;; 64-bit: Same as above.
285 ;; 32-bit: Return true if OP is a register, or is a constant that is
286 ;; representable by a couple of 13-bit signed fields. This is an
287 ;; acceptable operand for most 3-address splitters.
288 (define_predicate "arith_double_operand"
289 (match_code "const_int,const_double,reg,subreg")
291 bool arith_simple_operand = arith_operand (op, mode);
292 HOST_WIDE_INT m1, m2;
294 if (TARGET_ARCH64 || arith_simple_operand)
295 return arith_simple_operand;
297 #if HOST_BITS_PER_WIDE_INT == 32
298 if (GET_CODE (op) != CONST_DOUBLE)
300 m1 = CONST_DOUBLE_LOW (op);
301 m2 = CONST_DOUBLE_HIGH (op);
303 if (GET_CODE (op) != CONST_INT)
305 m1 = trunc_int_for_mode (INTVAL (op), SImode);
306 m2 = trunc_int_for_mode (INTVAL (op) >> 32, SImode);
309 return SPARC_SIMM13_P (m1) && SPARC_SIMM13_P (m2);
312 ;; Return true if OP is suitable as second operand for add/sub.
313 (define_predicate "arith_add_operand"
314 (ior (match_operand 0 "arith_operand")
315 (match_operand 0 "const_4096_operand")))
317 ;; Return true if OP is suitable as second double operand for add/sub.
318 (define_predicate "arith_double_add_operand"
319 (match_code "const_int,const_double,reg,subreg")
321 bool _arith_double_operand = arith_double_operand (op, mode);
323 if (_arith_double_operand)
326 return TARGET_ARCH64 && const_4096_operand (op, mode);
329 ;; Return true if OP is a register, or is a CONST_INT that can fit in a
330 ;; signed 10-bit immediate field. This is an acceptable SImode operand for
331 ;; the movrcc instructions.
332 (define_predicate "arith10_operand"
333 (ior (match_operand 0 "register_operand")
334 (and (match_code "const_int")
335 (match_test "SPARC_SIMM10_P (INTVAL (op))"))))
337 ;; Return true if OP is a register, or is a CONST_INT that can fit in a
338 ;; signed 11-bit immediate field. This is an acceptable SImode operand for
339 ;; the movcc instructions.
340 (define_predicate "arith11_operand"
341 (ior (match_operand 0 "register_operand")
342 (and (match_code "const_int")
343 (match_test "SPARC_SIMM11_P (INTVAL (op))"))))
345 ;; Return true if OP is a register or a constant for the umul instruction.
346 (define_predicate "uns_arith_operand"
347 (ior (match_operand 0 "register_operand")
348 (match_operand 0 "uns_small_int_operand")))
351 ;; Predicates for miscellaneous instructions.
353 ;; Return true if OP is valid for the lhs of a comparison insn.
354 (define_predicate "compare_operand"
355 (match_code "reg,subreg,zero_extract")
357 if (GET_CODE (op) == ZERO_EXTRACT)
358 return (register_operand (XEXP (op, 0), mode)
359 && small_int_operand (XEXP (op, 1), mode)
360 && small_int_operand (XEXP (op, 2), mode)
361 /* This matches cmp_zero_extract. */
363 && INTVAL (XEXP (op, 2)) > 19)
364 /* This matches cmp_zero_extract_sp64. */
367 && INTVAL (XEXP (op, 2)) > 51)));
369 return register_operand (op, mode);
372 ;; Return true if OP is a valid operand for the source of a move insn.
373 (define_predicate "input_operand"
374 (match_code "const_int,const_double,const_vector,reg,subreg,mem")
376 enum mode_class mclass;
378 /* If both modes are non-void they must be the same. */
379 if (mode != VOIDmode && GET_MODE (op) != VOIDmode && mode != GET_MODE (op))
382 mclass = GET_MODE_CLASS (mode);
384 /* Allow any 1-instruction integer constant. */
385 if (mclass == MODE_INT
386 && (small_int_operand (op, mode) || const_high_operand (op, mode)))
389 /* If 32-bit mode and this is a DImode constant, allow it
390 so that the splits can be generated. */
393 && (GET_CODE (op) == CONST_DOUBLE || GET_CODE (op) == CONST_INT))
396 if ((mclass == MODE_FLOAT && GET_CODE (op) == CONST_DOUBLE)
397 || (mclass == MODE_VECTOR_INT && GET_CODE (op) == CONST_VECTOR))
400 if (register_operand (op, mode))
403 /* If this is a SUBREG, look inside so that we handle paradoxical ones. */
404 if (GET_CODE (op) == SUBREG)
405 op = SUBREG_REG (op);
407 /* Check for valid MEM forms. */
408 if (GET_CODE (op) == MEM)
409 return memory_address_p (mode, XEXP (op, 0));
414 ;; Return true if OP is an address suitable for a call insn.
415 ;; Call insn on SPARC can take a PC-relative constant address
416 ;; or any regular memory address.
417 (define_predicate "call_address_operand"
418 (ior (match_operand 0 "symbolic_operand")
419 (match_test "memory_address_p (Pmode, op)")))
421 ;; Return true if OP is an operand suitable for a call insn.
422 (define_predicate "call_operand"
423 (and (match_code "mem")
424 (match_test "call_address_operand (XEXP (op, 0), mode)")))
427 ;; Predicates for operators.
429 ;; Return true if OP is a comparison operator. This allows the use of
430 ;; MATCH_OPERATOR to recognize all the branch insns.
431 (define_predicate "noov_compare_operator"
432 (match_code "ne,eq,ge,gt,le,lt,geu,gtu,leu,ltu")
434 enum rtx_code code = GET_CODE (op);
435 if (GET_MODE (XEXP (op, 0)) == CC_NOOVmode
436 || GET_MODE (XEXP (op, 0)) == CCX_NOOVmode)
437 /* These are the only branches which work with CC_NOOVmode. */
438 return (code == EQ || code == NE || code == GE || code == LT);
442 ;; Return true if OP is a 64-bit comparison operator. This allows the use of
443 ;; MATCH_OPERATOR to recognize all the branch insns.
444 (define_predicate "noov_compare64_operator"
445 (and (match_code "ne,eq,ge,gt,le,lt,geu,gtu,leu,ltu")
446 (match_test "TARGET_V9"))
448 enum rtx_code code = GET_CODE (op);
449 if (GET_MODE (XEXP (op, 0)) == CCX_NOOVmode)
450 /* These are the only branches which work with CCX_NOOVmode. */
451 return (code == EQ || code == NE || code == GE || code == LT);
452 return (GET_MODE (XEXP (op, 0)) == CCXmode);
455 ;; Return true if OP is a comparison operator suitable for use in V9
456 ;; conditional move or branch on register contents instructions.
457 (define_predicate "v9_register_compare_operator"
458 (match_code "eq,ne,ge,lt,le,gt"))
460 ;; Return true if OP is an operator which can set the condition codes
461 ;; explicitly. We do not include PLUS and MINUS because these
462 ;; require CC_NOOVmode, which we handle explicitly.
463 (define_predicate "cc_arith_operator"
464 (match_code "and,ior,xor"))
466 ;; Return true if OP is an operator which can bitwise complement its
467 ;; second operand and set the condition codes explicitly.
468 ;; XOR is not here because combine canonicalizes (xor (not ...) ...)
469 ;; and (xor ... (not ...)) to (not (xor ...)). */
470 (define_predicate "cc_arith_not_operator"
471 (match_code "and,ior"))
473 ;; Return true if OP is memory operand with just [%reg] addressing mode.
474 (define_predicate "memory_reg_operand"
475 (and (match_code "mem")
476 (and (match_operand 0 "memory_operand")
477 (match_test "REG_P (XEXP (op, 0))"))))