source/libs/gmp/gmp-src/mpn/ia64/copyi.asm

   1 dnl  IA-64 mpn_copyi -- copy limb vector, incrementing.
   2
   3 dnl  Contributed to the GNU project by Torbjorn Granlund.
   4
   5 dnl  Copyright 2001, 2002, 2004 Free Software Foundation, Inc.
   6
   7 dnl  This file is part of the GNU MP Library.
   8 dnl
   9 dnl  The GNU MP Library is free software; you can redistribute it and/or modify
  10 dnl  it under the terms of either:
  11 dnl
  12 dnl    * the GNU Lesser General Public License as published by the Free
  13 dnl      Software Foundation; either version 3 of the License, or (at your
  14 dnl      option) any later version.
  15 dnl
  16 dnl  or
  17 dnl
  18 dnl    * the GNU General Public License as published by the Free Software
  19 dnl      Foundation; either version 2 of the License, or (at your option) any
  20 dnl      later version.
  21 dnl
  22 dnl  or both in parallel, as here.
  23 dnl
  24 dnl  The GNU MP Library is distributed in the hope that it will be useful, but
  25 dnl  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  26 dnl  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  27 dnl  for more details.
  28 dnl
  29 dnl  You should have received copies of the GNU General Public License and the
  30 dnl  GNU Lesser General Public License along with the GNU MP Library.  If not,
  31 dnl  see https://www.gnu.org/licenses/.
  32
  33 include(`../config.m4')
  34
  35 C         cycles/limb
  36 C Itanium:    1
  37 C Itanium 2:  0.5
  38
  39 C INPUT PARAMETERS
  40 C rp = r32
  41 C sp = r33
  42 C n = r34
  43
  44 ASM_START()
  45 PROLOGUE(mpn_copyi)
  46         .prologue
  47         .save ar.lc, r2
  48         .body
  49 ifdef(`HAVE_ABI_32',
  50 `       addp4           r32 = 0, r32
  51         addp4           r33 = 0, r33
  52         sxt4            r34 = r34
  53         ;;
  54 ')
  55 {.mmi
  56         nop             0
  57         nop             0
  58         mov.i           r2 = ar.lc
  59 }
  60 {.mmi
  61         and             r14 = 3, r34
  62         cmp.ge          p14, p15 = 3, r34
  63         add             r34 = -4, r34
  64         ;;
  65 }
  66 {.mmi
  67         cmp.eq          p8, p0 = 1, r14
  68         cmp.eq          p10, p0 = 2, r14
  69         cmp.eq          p12, p0 = 3, r14
  70 }
  71 {.bbb
  72   (p8)  br.dptk         .Lb01
  73   (p10) br.dptk         .Lb10
  74   (p12) br.dptk         .Lb11
  75 }
  76
  77 .Lb00:  C  n = 0, 4, 8, 12, ...
  78   (p14) br.dptk         .Ls00
  79         ;;
  80         add             r21 = 8, r33
  81         ld8             r16 = [r33], 16
  82         shr             r15 = r34, 2
  83         ;;
  84         ld8             r17 = [r21], 16
  85         mov.i           ar.lc = r15
  86         ld8             r18 = [r33], 16
  87         add             r20 = 8, r32
  88         ;;
  89         ld8             r19 = [r21], 16
  90         br.cloop.dptk   .Loop
  91         ;;
  92         br.sptk         .Lend
  93         ;;
  94
  95 .Lb01:  C  n = 1, 5, 9, 13, ...
  96         add             r21 = 0, r33
  97         add             r20 = 0, r32
  98         add             r33 = 8, r33
  99         add             r32 = 8, r32
 100         ;;
 101         ld8             r19 = [r21], 16
 102         shr             r15 = r34, 2
 103   (p14) br.dptk         .Ls01
 104         ;;
 105         ld8             r16 = [r33], 16
 106         mov.i           ar.lc = r15
 107         ;;
 108         ld8             r17 = [r21], 16
 109         ld8             r18 = [r33], 16
 110         br.sptk         .Li01
 111         ;;
 112
 113 .Lb10:  C  n = 2,6, 10, 14, ...
 114         add             r21 = 8, r33
 115         add             r20 = 8, r32
 116         ld8             r18 = [r33], 16
 117         shr             r15 = r34, 2
 118         ;;
 119         ld8             r19 = [r21], 16
 120         mov.i           ar.lc = r15
 121   (p14) br.dptk         .Ls10
 122         ;;
 123         ld8             r16 = [r33], 16
 124         ld8             r17 = [r21], 16
 125         br.sptk         .Li10
 126         ;;
 127
 128 .Lb11:  C  n = 3, 7, 11, 15, ...
 129         add             r21 = 0, r33
 130         add             r20 = 0, r32
 131         add             r33 = 8, r33
 132         add             r32 = 8, r32
 133         ;;
 134         ld8             r17 = [r21], 16
 135         shr             r15 = r34, 2
 136         ;;
 137         ld8             r18 = [r33], 16
 138         mov.i           ar.lc = r15
 139         ld8             r19 = [r21], 16
 140   (p14) br.dptk         .Ls11
 141         ;;
 142         ld8             r16 = [r33], 16
 143         br.sptk         .Li11
 144         ;;
 145
 146         ALIGN(32)
 147 .Loop:
 148 .Li00:
 149 {.mmb
 150         st8             [r32] = r16, 16
 151         ld8             r16 = [r33], 16
 152         nop.b           0
 153 }
 154 .Li11:
 155 {.mmb
 156         st8             [r20] = r17, 16
 157         ld8             r17 = [r21], 16
 158         nop.b           0
 159         ;;
 160 }
 161 .Li10:
 162 {.mmb
 163         st8             [r32] = r18, 16
 164         ld8             r18 = [r33], 16
 165         nop.b           0
 166 }
 167 .Li01:
 168 {.mmb
 169         st8             [r20] = r19, 16
 170         ld8             r19 = [r21], 16
 171         br.cloop.dptk   .Loop
 172         ;;
 173 }
 174 .Lend:  st8             [r32] = r16, 16
 175 .Ls11:  st8             [r20] = r17, 16
 176         ;;
 177 .Ls10:  st8             [r32] = r18, 16
 178 .Ls01:  st8             [r20] = r19, 16
 179 .Ls00:  mov.i           ar.lc = r2
 180         br.ret.sptk.many b0
 181 EPILOGUE()
 182 ASM_END()