1 ;; Constraint definitions for Renesas / SuperH SH.
2 ;; Copyright (C) 2007-2018 Free Software Foundation, Inc.
4 ;; This file is part of GCC.
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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)
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20 ;; Overview of uppercase letter constraints:
21 ;; Axx: atomic memory operand constraints
22 ;; Ara: Same as Sra but disallows r15
23 ;; Add: Same as Sdd but disallows r15
24 ;; Bxx: miscellaneous constraints
25 ;; Bsc: SCRATCH - for the scratch register in movsi_ie in the
26 ;; fldi0 / fldi0 cases
27 ;; Cxx: Constants other than only CONST_INT
28 ;; Ccl: call site label
29 ;; Csy: label or symbol
30 ;; Cpg: non-explicit constants that can be directly loaded into a general
31 ;; purpose register in PIC code. Like 's' except we don't allow
33 ;; IJKLMNOP: CONT_INT constants
38 ;; Kxx: unsigned xx bit
41 ;; P27: 1 | 2 | 8 | 16
42 ;; Pso: 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128
43 ;; Psz: ~1 | ~2 | ~4 | ~8 | ~16 | ~32 | ~64 | ~128
44 ;; G: Floating point 0
45 ;; H: Floating point 1
46 ;; Q: pc relative load operand
47 ;; Rxx: reserved for exotic register classes.
48 ;; Sxx: extra memory constraints
49 ;; Sua: unaligned memory address
50 ;; Sbv: QImode address without displacement
51 ;; Sbw: QImode address with 12 bit displacement
52 ;; Snd: address without displacement
53 ;; Sdd: address with displacement
54 ;; Sra: simple register address
56 ;; Z: zero in any mode
58 ;; unused CONST_INT constraint letters: LO
59 ;; unused "extra" constraint letters: D T U Y
61 ;; Register constraints
62 (define_register_constraint "a" "ALL_REGS"
65 (define_register_constraint "c" "FPSCR_REGS"
66 "Floating-point status register.")
68 (define_register_constraint "d" "DF_REGS"
69 "Double precision floating-point register.")
71 (define_register_constraint "e" "TARGET_FMOVD ? NO_REGS : FP_REGS"
72 "Floating-point register.")
74 (define_register_constraint "f" "FP_REGS"
75 "Floating-point register.")
77 (define_register_constraint "k" "SIBCALL_REGS"
80 (define_register_constraint "l" "PR_REGS"
83 (define_register_constraint "t" "T_REGS"
86 (define_register_constraint "u" "NON_SP_REGS"
87 "Non-stack-pointer register.")
89 (define_register_constraint "w" "FP0_REGS"
90 "Floating-point register 0.")
92 (define_register_constraint "x" "MAC_REGS"
93 "MACH and MACL registers.")
95 (define_register_constraint "y" "FPUL_REGS"
98 (define_register_constraint "z" "R0_REGS"
101 ;; Integer constraints
102 (define_constraint "I08"
103 "A signed 8-bit constant, as used in add, sub, etc."
104 (and (match_code "const_int")
105 (match_test "ival >= -128 && ival <= 127")))
107 (define_constraint "I16"
108 "A signed 16-bit constant."
109 (and (match_code "const_int")
110 (match_test "ival >= -32768 && ival <= 32767")))
112 (define_constraint "I20"
113 "A signed 20-bit constant, as used in SH2A movi20."
114 (and (match_code "const_int")
115 (match_test "ival >= -524288 && ival <= 524287")
116 (match_test "TARGET_SH2A")))
118 (define_constraint "I28"
119 "A signed 28-bit constant, as used in SH2A movi20s."
120 (and (match_code "const_int")
121 (match_test "ival >= -134217728 && ival <= 134217727")
122 (match_test "(ival & 255) == 0")
123 (match_test "TARGET_SH2A")))
125 (define_constraint "Jmb"
126 "Low byte mask constant 0x000000FF"
127 (and (match_code "const_int")
128 (match_test "ival == 0xFF")))
130 (define_constraint "Jmw"
131 "Low word mask constant 0x0000FFFF"
132 (and (match_code "const_int")
133 (match_test "ival == 0xFFFF")))
135 (define_constraint "Jhb"
136 "Highest bit constant"
137 (and (match_code "const_int")
138 (match_test "(ival & 0xFFFFFFFF) == 0x80000000")))
140 (define_constraint "K03"
141 "An unsigned 3-bit constant, as used in SH2A bclr, bset, etc."
142 (and (match_code "const_int")
143 (match_test "ival >= 0 && ival <= 7")))
145 (define_constraint "K04"
146 "An unsigned 4-bit constant, as used in mov.b displacement addressing."
147 (and (match_code "const_int")
148 (match_test "ival >= 0 && ival <= 15")))
150 (define_constraint "K05"
151 "An unsigned 5-bit constant, as used in mov.w displacement addressing."
152 (and (match_code "const_int")
153 (match_test "ival >= 0 && ival <= 31")))
155 (define_constraint "K08"
156 "An unsigned 8-bit constant, as used in and, or, etc."
157 (and (match_code "const_int")
158 (match_test "ival >= 0 && ival <= 255")))
160 (define_constraint "K12"
161 "An unsigned 12-bit constant, as used in SH2A 12-bit mov.b displacement
163 (and (match_code "const_int")
164 (match_test "ival >= 0 && ival <= 4095")))
166 (define_constraint "K13"
167 "An unsigned 13-bit constant, as used in SH2A 12-bit mov.w displacement
169 (and (match_code "const_int")
170 (match_test "ival >= 0 && ival <= 8191")))
172 (define_constraint "P27"
173 "A constant for shift operand 1,2,8 or 16."
174 (and (match_code "const_int")
175 (match_test "ival == 1 || ival == 2 || ival == 8 || ival == 16")))
177 (define_constraint "M"
178 "Integer constant 1."
179 (and (match_code "const_int")
180 (match_test "ival == 1")))
182 (define_constraint "N"
183 "Integer constant 0."
184 (and (match_code "const_int")
185 (match_test "ival == 0")))
187 ;; Floating-point constraints
188 (define_constraint "G"
190 (and (match_code "const_double")
191 (match_test "fp_zero_operand (op)")))
193 (define_constraint "H"
195 (and (match_code "const_double")
196 (match_test "fp_one_operand (op)")))
199 (define_constraint "Q"
200 "A pc relative load operand."
201 (and (match_code "mem")
202 (match_test "GET_MODE (op) != QImode")
203 (match_test "IS_PC_RELATIVE_LOAD_ADDR_P (XEXP (op, 0))")))
205 (define_constraint "Bsc"
206 "Constraint for selecting FLDI0 or FLDI1 instruction. If the clobber
207 operand is not SCRATCH (i.e. REG) then R0 is probably being used,
208 hence mova is being used, hence do not select this pattern."
209 (match_code "scratch"))
211 (define_constraint "Ccl"
212 "A call site label, for bsrf."
213 (and (match_code "unspec")
214 (match_test "XINT (op, 1) == UNSPEC_CALLER")))
216 (define_constraint "Csy"
217 "A label or a symbol."
218 (ior (match_test "NON_PIC_REFERENCE_P (op)")
219 (match_test "PIC_ADDR_P (op)")))
221 (define_constraint "Z"
222 "A zero in any shape or form."
223 (match_test "op == CONST0_RTX (GET_MODE (op))"))
225 (define_constraint "W"
226 "Any vector constant we can handle."
227 (and (match_code "const_vector")
228 (ior (match_test "sh_rep_vec (op, VOIDmode)")
229 (match_test "HOST_BITS_PER_WIDE_INT >= 64
230 ? sh_const_vec (op, VOIDmode)
231 : sh_1el_vec (op, VOIDmode)"))))
233 (define_constraint "Cpg"
234 "A non-explicit constant that can be loaded directly into a general
235 purpose register. This is like 's' except we don't allow
237 (match_test "IS_NON_EXPLICIT_CONSTANT_P (op)"))
239 (define_constraint "Pso"
240 "Integer constant with a single bit set in its lower 8-bit."
241 (and (match_code "const_int")
242 (ior (match_test "ival == 1")
243 (match_test "ival == 2")
244 (match_test "ival == 4")
245 (match_test "ival == 8")
246 (match_test "ival == 16")
247 (match_test "ival == 32")
248 (match_test "ival == 64")
249 (match_test "ival == 128"))))
251 (define_constraint "Psz"
252 "Integer constant with a single zero bit in the lower 8-bit."
253 (and (match_code "const_int")
254 (ior (match_test "~ival == 1")
255 (match_test "~ival == 2")
256 (match_test "~ival == 4")
257 (match_test "~ival == 8")
258 (match_test "~ival == 16")
259 (match_test "~ival == 32")
260 (match_test "~ival == 64")
261 (match_test "~ival == 128"))))
263 (define_memory_constraint "Sua"
265 (and (match_test "memory_operand (op, GET_MODE (op))")
266 (match_test "GET_CODE (XEXP (op, 0)) != PLUS")))
268 (define_memory_constraint "Sdd"
269 "A memory reference that uses displacement addressing."
270 (and (match_code "mem")
271 (match_code "plus" "0")
272 (match_code "reg" "00")
273 (match_code "const_int" "01")))
275 (define_memory_constraint "Snd"
276 "A memory reference that excludes displacement addressing."
277 (and (match_code "mem")
278 (match_test "! satisfies_constraint_Sdd (op)")))
280 (define_memory_constraint "Sid"
281 "A memory reference that uses index addressing."
282 (and (match_code "mem")
283 (match_code "plus" "0")
284 (match_code "reg" "00")
285 (match_code "reg" "01")))
287 (define_memory_constraint "Ssd"
288 "A memory reference that excludes index and displacement addressing."
289 (and (match_code "mem")
290 (match_test "! satisfies_constraint_Sid (op)")
291 (match_test "! satisfies_constraint_Sdd (op)")))
293 (define_memory_constraint "Sbv"
294 "A memory reference, as used in SH2A bclr.b, bset.b, etc."
295 (and (match_test "MEM_P (op) && GET_MODE (op) == QImode")
296 (match_test "REG_P (XEXP (op, 0))")))
298 (define_memory_constraint "Sbw"
299 "A memory reference, as used in SH2A bclr.b, bset.b, etc."
300 (and (match_test "satisfies_constraint_Sdd (op)")
301 (match_test "GET_MODE (op) == QImode")
302 (match_test "satisfies_constraint_K12 (XEXP (XEXP (op, 0), 1))")))
304 (define_memory_constraint "Sra"
305 "A memory reference that uses simple register addressing."
306 (and (match_code "mem")
307 (match_code "reg" "0")))
309 (define_memory_constraint "Ara"
310 "A memory reference that uses simple register addressing suitable for
311 gusa atomic operations."
312 (and (match_code "mem")
313 (match_code "reg" "0")
314 (match_test "REGNO (XEXP (op, 0)) != SP_REG")))
316 (define_memory_constraint "Add"
317 "A memory reference that uses displacement addressing suitable for
318 gusa atomic operations."
319 (and (match_code "mem")
320 (match_test "GET_MODE (op) == SImode")
321 (match_code "plus" "0")
322 (match_code "reg" "00")
323 (match_code "const_int" "01")
324 (match_test "REGNO (XEXP (XEXP (op, 0), 0)) != SP_REG")))