gcc/config/mips/loongson.md

   1 ;; Machine description for ST Microelectronics Loongson-2E/2F.
   2 ;; Copyright (C) 2008 Free Software Foundation, Inc.
   3 ;; Contributed by CodeSourcery.
   4 ;;
   5 ;; This file is part of GCC.
   6 ;;
   7 ;; GCC is free software; you can redistribute it and/or modify
   8 ;; it under the terms of the GNU General Public License as published by
   9 ;; the Free Software Foundation; either version 3, or (at your option)
  10 ;; any later version.
  11
  12 ;; GCC is distributed in the hope that it will be useful,
  13 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 ;; GNU General Public License for more details.
  16
  17 ;; You should have received a copy of the GNU General Public License
  18 ;; along with GCC; see the file COPYING3.  If not see
  19 ;; <http://www.gnu.org/licenses/>.
  20
  21 ;; Mode iterators and attributes.
  22
  23 ;; 64-bit vectors of bytes.
  24 (define_mode_iterator VB [V8QI])
  25
  26 ;; 64-bit vectors of halfwords.
  27 (define_mode_iterator VH [V4HI])
  28
  29 ;; 64-bit vectors of words.
  30 (define_mode_iterator VW [V2SI])
  31
  32 ;; 64-bit vectors of halfwords and bytes.
  33 (define_mode_iterator VHB [V4HI V8QI])
  34
  35 ;; 64-bit vectors of words and halfwords.
  36 (define_mode_iterator VWH [V2SI V4HI])
  37
  38 ;; 64-bit vectors of words, halfwords and bytes.
  39 (define_mode_iterator VWHB [V2SI V4HI V8QI])
  40
  41 ;; 64-bit vectors of words, halfwords and bytes; and DImode.
  42 (define_mode_iterator VWHBDI [V2SI V4HI V8QI DI])
  43
  44 ;; The Loongson instruction suffixes corresponding to the modes in the
  45 ;; VWHBDI iterator.
  46 (define_mode_attr V_suffix [(V2SI "w") (V4HI "h") (V8QI "b") (DI "d")])
  47
  48 ;; Given a vector type T, the mode of a vector half the size of T
  49 ;; and with the same number of elements.
  50 (define_mode_attr V_squash [(V2SI "V2HI") (V4HI "V4QI")])
  51
  52 ;; Given a vector type T, the mode of a vector the same size as T
  53 ;; but with half as many elements.
  54 (define_mode_attr V_stretch_half [(V2SI "DI") (V4HI "V2SI") (V8QI "V4HI")])
  55
  56 ;; The Loongson instruction suffixes corresponding to the transformation
  57 ;; expressed by V_stretch_half.
  58 (define_mode_attr V_stretch_half_suffix [(V2SI "wd") (V4HI "hw") (V8QI "bh")])
  59
  60 ;; Given a vector type T, the mode of a vector the same size as T
  61 ;; but with twice as many elements.
  62 (define_mode_attr V_squash_double [(V2SI "V4HI") (V4HI "V8QI")])
  63
  64 ;; The Loongson instruction suffixes corresponding to the conversions
  65 ;; specified by V_half_width.
  66 (define_mode_attr V_squash_double_suffix [(V2SI "wh") (V4HI "hb")])
  67
  68 ;; Move patterns.
  69
  70 ;; Expander to legitimize moves involving values of vector modes.
  71 (define_expand "mov<mode>"
  72   [(set (match_operand:VWHB 0)
  73         (match_operand:VWHB 1))]
  74   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
  75 {
  76   if (mips_legitimize_move (<MODE>mode, operands[0], operands[1]))
  77     DONE;
  78 })
  79
  80 ;; Handle legitimized moves between values of vector modes.
  81 (define_insn "mov<mode>_internal"
  82   [(set (match_operand:VWHB 0 "nonimmediate_operand" "=m,f,d,f,  d,  m,  d")
  83         (match_operand:VWHB 1 "move_operand"          "f,m,f,dYG,dYG,dYG,m"))]
  84   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
  85   { return mips_output_move (operands[0], operands[1]); }
  86   [(set_attr "move_type" "fpstore,fpload,mfc,mtc,move,store,load")
  87    (set_attr "mode" "DI")])
  88
  89 ;; Initialization of a vector.
  90
  91 (define_expand "vec_init<mode>"
  92   [(set (match_operand:VWHB 0 "register_operand")
  93         (match_operand 1 ""))]
  94   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
  95 {
  96   mips_expand_vector_init (operands[0], operands[1]);
  97   DONE;
  98 })
  99
 100 ;; Instruction patterns for SIMD instructions.
 101
 102 ;; Pack with signed saturation.
 103 (define_insn "vec_pack_ssat_<mode>"
 104   [(set (match_operand:<V_squash_double> 0 "register_operand" "=f")
 105         (vec_concat:<V_squash_double>
 106          (ss_truncate:<V_squash>
 107           (match_operand:VWH 1 "register_operand" "f"))
 108          (ss_truncate:<V_squash>
 109           (match_operand:VWH 2 "register_operand" "f"))))]
 110   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 111   "packss<V_squash_double_suffix>\t%0,%1,%2"
 112   [(set_attr "type" "fmul")])
 113
 114 ;; Pack with unsigned saturation.
 115 (define_insn "vec_pack_usat_<mode>"
 116   [(set (match_operand:<V_squash_double> 0 "register_operand" "=f")
 117         (vec_concat:<V_squash_double>
 118          (us_truncate:<V_squash>
 119           (match_operand:VH 1 "register_operand" "f"))
 120          (us_truncate:<V_squash>
 121           (match_operand:VH 2 "register_operand" "f"))))]
 122   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 123   "packus<V_squash_double_suffix>\t%0,%1,%2"
 124   [(set_attr "type" "fmul")])
 125
 126 ;; Addition, treating overflow by wraparound.
 127 (define_insn "add<mode>3"
 128   [(set (match_operand:VWHB 0 "register_operand" "=f")
 129         (plus:VWHB (match_operand:VWHB 1 "register_operand" "f")
 130                    (match_operand:VWHB 2 "register_operand" "f")))]
 131   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 132   "padd<V_suffix>\t%0,%1,%2"
 133   [(set_attr "type" "fadd")])
 134
 135 ;; Addition of doubleword integers stored in FP registers.
 136 ;; Overflow is treated by wraparound.
 137 ;; We use 'unspec' instead of 'plus' here to avoid clash with
 138 ;; mips.md::add<mode>3.  If 'plus' was used, then such instruction
 139 ;; would be recognized as adddi3 and reload would make it use
 140 ;; GPRs instead of FPRs.
 141 (define_insn "loongson_paddd"
 142   [(set (match_operand:DI 0 "register_operand" "=f")
 143         (unspec:DI [(match_operand:DI 1 "register_operand" "f")
 144                     (match_operand:DI 2 "register_operand" "f")]
 145                    UNSPEC_LOONGSON_PADDD))]
 146   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 147   "paddd\t%0,%1,%2"
 148   [(set_attr "type" "fadd")])
 149
 150 ;; Addition, treating overflow by signed saturation.
 151 (define_insn "ssadd<mode>3"
 152   [(set (match_operand:VHB 0 "register_operand" "=f")
 153         (ss_plus:VHB (match_operand:VHB 1 "register_operand" "f")
 154                      (match_operand:VHB 2 "register_operand" "f")))]
 155   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 156   "padds<V_suffix>\t%0,%1,%2"
 157   [(set_attr "type" "fadd")])
 158
 159 ;; Addition, treating overflow by unsigned saturation.
 160 (define_insn "usadd<mode>3"
 161   [(set (match_operand:VHB 0 "register_operand" "=f")
 162         (us_plus:VHB (match_operand:VHB 1 "register_operand" "f")
 163                      (match_operand:VHB 2 "register_operand" "f")))]
 164   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 165   "paddus<V_suffix>\t%0,%1,%2"
 166   [(set_attr "type" "fadd")])
 167
 168 ;; Logical AND NOT.
 169 (define_insn "loongson_pandn_<V_suffix>"
 170   [(set (match_operand:VWHBDI 0 "register_operand" "=f")
 171         (and:VWHBDI
 172          (not:VWHBDI (match_operand:VWHBDI 1 "register_operand" "f"))
 173          (match_operand:VWHBDI 2 "register_operand" "f")))]
 174   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 175   "pandn\t%0,%1,%2"
 176   [(set_attr "type" "fmul")])
 177
 178 ;; Average.
 179 (define_insn "loongson_pavg<V_suffix>"
 180   [(set (match_operand:VHB 0 "register_operand" "=f")
 181         (unspec:VHB [(match_operand:VHB 1 "register_operand" "f")
 182                      (match_operand:VHB 2 "register_operand" "f")]
 183                     UNSPEC_LOONGSON_PAVG))]
 184   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 185   "pavg<V_suffix>\t%0,%1,%2"
 186   [(set_attr "type" "fadd")])
 187
 188 ;; Equality test.
 189 (define_insn "loongson_pcmpeq<V_suffix>"
 190   [(set (match_operand:VWHB 0 "register_operand" "=f")
 191         (unspec:VWHB [(match_operand:VWHB 1 "register_operand" "f")
 192                       (match_operand:VWHB 2 "register_operand" "f")]
 193                      UNSPEC_LOONGSON_PCMPEQ))]
 194   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 195   "pcmpeq<V_suffix>\t%0,%1,%2"
 196   [(set_attr "type" "fadd")])
 197
 198 ;; Greater-than test.
 199 (define_insn "loongson_pcmpgt<V_suffix>"
 200   [(set (match_operand:VWHB 0 "register_operand" "=f")
 201         (unspec:VWHB [(match_operand:VWHB 1 "register_operand" "f")
 202                       (match_operand:VWHB 2 "register_operand" "f")]
 203                      UNSPEC_LOONGSON_PCMPGT))]
 204   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 205   "pcmpgt<V_suffix>\t%0,%1,%2"
 206   [(set_attr "type" "fadd")])
 207
 208 ;; Extract halfword.
 209 (define_insn "loongson_pextr<V_suffix>"
 210   [(set (match_operand:VH 0 "register_operand" "=f")
 211         (unspec:VH [(match_operand:VH 1 "register_operand" "f")
 212                     (match_operand:SI 2 "register_operand" "f")]
 213                    UNSPEC_LOONGSON_PEXTR))]
 214   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 215   "pextr<V_suffix>\t%0,%1,%2"
 216   [(set_attr "type" "fmul")])
 217
 218 ;; Insert halfword.
 219 (define_insn "loongson_pinsr<V_suffix>_0"
 220   [(set (match_operand:VH 0 "register_operand" "=f")
 221         (unspec:VH [(match_operand:VH 1 "register_operand" "f")
 222                     (match_operand:VH 2 "register_operand" "f")]
 223                    UNSPEC_LOONGSON_PINSR_0))]
 224   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 225   "pinsr<V_suffix>_0\t%0,%1,%2"
 226   [(set_attr "type" "fdiv")])
 227
 228 (define_insn "loongson_pinsr<V_suffix>_1"
 229   [(set (match_operand:VH 0 "register_operand" "=f")
 230         (unspec:VH [(match_operand:VH 1 "register_operand" "f")
 231                     (match_operand:VH 2 "register_operand" "f")]
 232                    UNSPEC_LOONGSON_PINSR_1))]
 233   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 234   "pinsr<V_suffix>_1\t%0,%1,%2"
 235   [(set_attr "type" "fdiv")])
 236
 237 (define_insn "loongson_pinsr<V_suffix>_2"
 238   [(set (match_operand:VH 0 "register_operand" "=f")
 239         (unspec:VH [(match_operand:VH 1 "register_operand" "f")
 240                     (match_operand:VH 2 "register_operand" "f")]
 241                    UNSPEC_LOONGSON_PINSR_2))]
 242   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 243   "pinsr<V_suffix>_2\t%0,%1,%2"
 244   [(set_attr "type" "fdiv")])
 245
 246 (define_insn "loongson_pinsr<V_suffix>_3"
 247   [(set (match_operand:VH 0 "register_operand" "=f")
 248         (unspec:VH [(match_operand:VH 1 "register_operand" "f")
 249                     (match_operand:VH 2 "register_operand" "f")]
 250                    UNSPEC_LOONGSON_PINSR_3))]
 251   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 252   "pinsr<V_suffix>_3\t%0,%1,%2"
 253   [(set_attr "type" "fdiv")])
 254
 255 ;; Multiply and add packed integers.
 256 (define_insn "loongson_pmadd<V_stretch_half_suffix>"
 257   [(set (match_operand:<V_stretch_half> 0 "register_operand" "=f")
 258         (unspec:<V_stretch_half> [(match_operand:VH 1 "register_operand" "f")
 259                                   (match_operand:VH 2 "register_operand" "f")]
 260                                  UNSPEC_LOONGSON_PMADD))]
 261   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 262   "pmadd<V_stretch_half_suffix>\t%0,%1,%2"
 263   [(set_attr "type" "fmul")])
 264
 265 ;; Maximum of signed halfwords.
 266 (define_insn "smax<mode>3"
 267   [(set (match_operand:VH 0 "register_operand" "=f")
 268         (smax:VH (match_operand:VH 1 "register_operand" "f")
 269                  (match_operand:VH 2 "register_operand" "f")))]
 270   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 271   "pmaxs<V_suffix>\t%0,%1,%2"
 272   [(set_attr "type" "fadd")])
 273
 274 ;; Maximum of unsigned bytes.
 275 (define_insn "umax<mode>3"
 276   [(set (match_operand:VB 0 "register_operand" "=f")
 277         (umax:VB (match_operand:VB 1 "register_operand" "f")
 278                  (match_operand:VB 2 "register_operand" "f")))]
 279   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 280   "pmaxu<V_suffix>\t%0,%1,%2"
 281   [(set_attr "type" "fadd")])
 282
 283 ;; Minimum of signed halfwords.
 284 (define_insn "smin<mode>3"
 285   [(set (match_operand:VH 0 "register_operand" "=f")
 286         (smin:VH (match_operand:VH 1 "register_operand" "f")
 287                  (match_operand:VH 2 "register_operand" "f")))]
 288   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 289   "pmins<V_suffix>\t%0,%1,%2"
 290   [(set_attr "type" "fadd")])
 291
 292 ;; Minimum of unsigned bytes.
 293 (define_insn "umin<mode>3"
 294   [(set (match_operand:VB 0 "register_operand" "=f")
 295         (umin:VB (match_operand:VB 1 "register_operand" "f")
 296                  (match_operand:VB 2 "register_operand" "f")))]
 297   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 298   "pminu<V_suffix>\t%0,%1,%2"
 299   [(set_attr "type" "fadd")])
 300
 301 ;; Move byte mask.
 302 (define_insn "loongson_pmovmsk<V_suffix>"
 303   [(set (match_operand:VB 0 "register_operand" "=f")
 304         (unspec:VB [(match_operand:VB 1 "register_operand" "f")]
 305                    UNSPEC_LOONGSON_PMOVMSK))]
 306   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 307   "pmovmsk<V_suffix>\t%0,%1"
 308   [(set_attr "type" "fabs")])
 309
 310 ;; Multiply unsigned integers and store high result.
 311 (define_insn "umul<mode>3_highpart"
 312   [(set (match_operand:VH 0 "register_operand" "=f")
 313         (unspec:VH [(match_operand:VH 1 "register_operand" "f")
 314                     (match_operand:VH 2 "register_operand" "f")]
 315                    UNSPEC_LOONGSON_PMULHU))]
 316   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 317   "pmulhu<V_suffix>\t%0,%1,%2"
 318   [(set_attr "type" "fmul")])
 319
 320 ;; Multiply signed integers and store high result.
 321 (define_insn "smul<mode>3_highpart"
 322   [(set (match_operand:VH 0 "register_operand" "=f")
 323         (unspec:VH [(match_operand:VH 1 "register_operand" "f")
 324                     (match_operand:VH 2 "register_operand" "f")]
 325                    UNSPEC_LOONGSON_PMULH))]
 326   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 327   "pmulh<V_suffix>\t%0,%1,%2"
 328   [(set_attr "type" "fmul")])
 329
 330 ;; Multiply signed integers and store low result.
 331 (define_insn "loongson_pmull<V_suffix>"
 332   [(set (match_operand:VH 0 "register_operand" "=f")
 333         (unspec:VH [(match_operand:VH 1 "register_operand" "f")
 334                     (match_operand:VH 2 "register_operand" "f")]
 335                    UNSPEC_LOONGSON_PMULL))]
 336   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 337   "pmull<V_suffix>\t%0,%1,%2"
 338   [(set_attr "type" "fmul")])
 339
 340 ;; Multiply unsigned word integers.
 341 (define_insn "loongson_pmulu<V_suffix>"
 342   [(set (match_operand:DI 0 "register_operand" "=f")
 343         (unspec:DI [(match_operand:VW 1 "register_operand" "f")
 344                     (match_operand:VW 2 "register_operand" "f")]
 345                    UNSPEC_LOONGSON_PMULU))]
 346   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 347   "pmulu<V_suffix>\t%0,%1,%2"
 348   [(set_attr "type" "fmul")])
 349
 350 ;; Absolute difference.
 351 (define_insn "loongson_pasubub"
 352   [(set (match_operand:VB 0 "register_operand" "=f")
 353         (unspec:VB [(match_operand:VB 1 "register_operand" "f")
 354                     (match_operand:VB 2 "register_operand" "f")]
 355                    UNSPEC_LOONGSON_PASUBUB))]
 356   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 357   "pasubub\t%0,%1,%2"
 358   [(set_attr "type" "fadd")])
 359
 360 ;; Sum of unsigned byte integers.
 361 (define_insn "reduc_uplus_<mode>"
 362   [(set (match_operand:<V_stretch_half> 0 "register_operand" "=f")
 363         (unspec:<V_stretch_half> [(match_operand:VB 1 "register_operand" "f")]
 364                                  UNSPEC_LOONGSON_BIADD))]
 365   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 366   "biadd\t%0,%1"
 367   [(set_attr "type" "fabs")])
 368
 369 ;; Sum of absolute differences.
 370 (define_insn "loongson_psadbh"
 371   [(set (match_operand:<V_stretch_half> 0 "register_operand" "=f")
 372         (unspec:<V_stretch_half> [(match_operand:VB 1 "register_operand" "f")
 373                                   (match_operand:VB 2 "register_operand" "f")]
 374                                  UNSPEC_LOONGSON_PSADBH))]
 375   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 376   "pasubub\t%0,%1,%2;biadd\t%0,%0"
 377   [(set_attr "type" "fadd")])
 378
 379 ;; Shuffle halfwords.
 380 (define_insn "loongson_pshufh"
 381   [(set (match_operand:VH 0 "register_operand" "=f")
 382         (unspec:VH [(match_operand:VH 1 "register_operand" "0")
 383                     (match_operand:VH 2 "register_operand" "f")
 384                     (match_operand:SI 3 "register_operand" "f")]
 385                    UNSPEC_LOONGSON_PSHUFH))]
 386   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 387   "pshufh\t%0,%2,%3"
 388   [(set_attr "type" "fmul")])
 389
 390 ;; Shift left logical.
 391 (define_insn "loongson_psll<V_suffix>"
 392   [(set (match_operand:VWH 0 "register_operand" "=f")
 393         (ashift:VWH (match_operand:VWH 1 "register_operand" "f")
 394                     (match_operand:SI 2 "register_operand" "f")))]
 395   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 396   "psll<V_suffix>\t%0,%1,%2"
 397   [(set_attr "type" "fmul")])
 398
 399 ;; Shift right arithmetic.
 400 (define_insn "loongson_psra<V_suffix>"
 401   [(set (match_operand:VWH 0 "register_operand" "=f")
 402         (ashiftrt:VWH (match_operand:VWH 1 "register_operand" "f")
 403                       (match_operand:SI 2 "register_operand" "f")))]
 404   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 405   "psra<V_suffix>\t%0,%1,%2"
 406   [(set_attr "type" "fdiv")])
 407
 408 ;; Shift right logical.
 409 (define_insn "loongson_psrl<V_suffix>"
 410   [(set (match_operand:VWH 0 "register_operand" "=f")
 411         (lshiftrt:VWH (match_operand:VWH 1 "register_operand" "f")
 412                       (match_operand:SI 2 "register_operand" "f")))]
 413   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 414   "psrl<V_suffix>\t%0,%1,%2"
 415   [(set_attr "type" "fdiv")])
 416
 417 ;; Subtraction, treating overflow by wraparound.
 418 (define_insn "sub<mode>3"
 419   [(set (match_operand:VWHB 0 "register_operand" "=f")
 420         (minus:VWHB (match_operand:VWHB 1 "register_operand" "f")
 421                     (match_operand:VWHB 2 "register_operand" "f")))]
 422   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 423   "psub<V_suffix>\t%0,%1,%2"
 424   [(set_attr "type" "fadd")])
 425
 426 ;; Subtraction of doubleword integers stored in FP registers.
 427 ;; Overflow is treated by wraparound.
 428 ;; See loongson_paddd for the reason we use 'unspec' rather than
 429 ;; 'minus' here.
 430 (define_insn "loongson_psubd"
 431   [(set (match_operand:DI 0 "register_operand" "=f")
 432         (unspec:DI [(match_operand:DI 1 "register_operand" "f")
 433                     (match_operand:DI 2 "register_operand" "f")]
 434                    UNSPEC_LOONGSON_PSUBD))]
 435   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 436   "psubd\t%0,%1,%2"
 437   [(set_attr "type" "fadd")])
 438
 439 ;; Subtraction, treating overflow by signed saturation.
 440 (define_insn "sssub<mode>3"
 441   [(set (match_operand:VHB 0 "register_operand" "=f")
 442         (ss_minus:VHB (match_operand:VHB 1 "register_operand" "f")
 443                       (match_operand:VHB 2 "register_operand" "f")))]
 444   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 445   "psubs<V_suffix>\t%0,%1,%2"
 446   [(set_attr "type" "fadd")])
 447
 448 ;; Subtraction, treating overflow by unsigned saturation.
 449 (define_insn "ussub<mode>3"
 450   [(set (match_operand:VHB 0 "register_operand" "=f")
 451         (us_minus:VHB (match_operand:VHB 1 "register_operand" "f")
 452                       (match_operand:VHB 2 "register_operand" "f")))]
 453   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 454   "psubus<V_suffix>\t%0,%1,%2"
 455   [(set_attr "type" "fadd")])
 456
 457 ;; Unpack high data.
 458 (define_insn "vec_interleave_high<mode>"
 459   [(set (match_operand:VWHB 0 "register_operand" "=f")
 460         (unspec:VWHB [(match_operand:VWHB 1 "register_operand" "f")
 461                       (match_operand:VWHB 2 "register_operand" "f")]
 462                      UNSPEC_LOONGSON_PUNPCKH))]
 463   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 464   "punpckh<V_stretch_half_suffix>\t%0,%1,%2"
 465   [(set_attr "type" "fdiv")])
 466
 467 ;; Unpack low data.
 468 (define_insn "vec_interleave_low<mode>"
 469   [(set (match_operand:VWHB 0 "register_operand" "=f")
 470         (unspec:VWHB [(match_operand:VWHB 1 "register_operand" "f")
 471                       (match_operand:VWHB 2 "register_operand" "f")]
 472                      UNSPEC_LOONGSON_PUNPCKL))]
 473   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 474   "punpckl<V_stretch_half_suffix>\t%0,%1,%2"
 475   [(set_attr "type" "fdiv")])