copyd.asm
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上传日期:2022-08-06
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文件大小:3k
- dnl IA-64 mpn_copyd -- copy limb vector, decrementing.
- dnl Copyright 2001, 2002, 2004 Free Software Foundation, Inc.
- dnl This file is part of the GNU MP Library.
- dnl The GNU MP Library is free software; you can redistribute it and/or modify
- dnl it under the terms of the GNU Lesser General Public License as published
- dnl by the Free Software Foundation; either version 3 of the License, or (at
- dnl your option) any later version.
- dnl The GNU MP Library is distributed in the hope that it will be useful, but
- dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
- dnl License for more details.
- dnl You should have received a copy of the GNU Lesser General Public License
- dnl along with the GNU MP Library. If not, see http://www.gnu.org/licenses/.
- include(`../config.m4')
- C cycles/limb
- C Itanium: 1
- C Itanium 2: 0.5
- C INPUT PARAMETERS
- C rp = r32
- C sp = r33
- C n = r34
- ASM_START()
- PROLOGUE(mpn_copyd)
- .prologue
- .save ar.lc, r2
- .body
- ifdef(`HAVE_ABI_32',
- ` addp4 r32 = 0, r32
- addp4 r33 = 0, r33
- sxt4 r34 = r34
- ;;
- ')
- {.mmi
- shladd r32 = r34, 3, r32
- shladd r33 = r34, 3, r33
- mov.i r2 = ar.lc
- }
- {.mmi
- and r14 = 3, r34
- cmp.ge p14, p15 = 3, r34
- add r34 = -4, r34
- ;;
- }
- {.mmi
- cmp.eq p8, p0 = 1, r14
- cmp.eq p10, p0 = 2, r14
- cmp.eq p12, p0 = 3, r14
- }
- {.bbb
- (p8) br.dptk .Lb01
- (p10) br.dptk .Lb10
- (p12) br.dptk .Lb11
- }
- .Lb00: C n = 0, 4, 8, 12, ...
- add r32 = -8, r32
- add r33 = -8, r33
- (p14) br.dptk .Ls00
- ;;
- add r21 = -8, r33
- ld8 r16 = [r33], -16
- shr r15 = r34, 2
- ;;
- ld8 r17 = [r21], -16
- mov.i ar.lc = r15
- ld8 r18 = [r33], -16
- add r20 = -8, r32
- ;;
- ld8 r19 = [r21], -16
- br.cloop.dptk .Loop
- ;;
- br.sptk .Lend
- ;;
- .Lb01: C n = 1, 5, 9, 13, ...
- add r21 = -8, r33
- add r20 = -8, r32
- add r33 = -16, r33
- add r32 = -16, r32
- ;;
- ld8 r19 = [r21], -16
- shr r15 = r34, 2
- (p14) br.dptk .Ls01
- ;;
- ld8 r16 = [r33], -16
- mov.i ar.lc = r15
- ;;
- ld8 r17 = [r21], -16
- ld8 r18 = [r33], -16
- br.sptk .Li01
- ;;
- .Lb10: C n = 2,6, 10, 14, ...
- add r21 = -16, r33
- shr r15 = r34, 2
- add r20 = -16, r32
- add r32 = -8, r32
- add r33 = -8, r33
- ;;
- ld8 r18 = [r33], -16
- ld8 r19 = [r21], -16
- mov.i ar.lc = r15
- (p14) br.dptk .Ls10
- ;;
- ld8 r16 = [r33], -16
- ld8 r17 = [r21], -16
- br.sptk .Li10
- ;;
- .Lb11: C n = 3, 7, 11, 15, ...
- add r21 = -8, r33
- add r20 = -8, r32
- add r33 = -16, r33
- add r32 = -16, r32
- ;;
- ld8 r17 = [r21], -16
- shr r15 = r34, 2
- ;;
- ld8 r18 = [r33], -16
- mov.i ar.lc = r15
- ld8 r19 = [r21], -16
- (p14) br.dptk .Ls11
- ;;
- ld8 r16 = [r33], -16
- br.sptk .Li11
- ;;
- ALIGN(32)
- .Loop:
- .Li00:
- {.mmb
- st8 [r32] = r16, -16
- ld8 r16 = [r33], -16
- nop.b 0
- }
- .Li11:
- {.mmb
- st8 [r20] = r17, -16
- ld8 r17 = [r21], -16
- nop.b 0
- ;;
- }
- .Li10:
- {.mmb
- st8 [r32] = r18, -16
- ld8 r18 = [r33], -16
- nop.b 0
- }
- .Li01:
- {.mmb
- st8 [r20] = r19, -16
- ld8 r19 = [r21], -16
- br.cloop.dptk .Loop
- ;;
- }
- .Lend: st8 [r32] = r16, -16
- .Ls11: st8 [r20] = r17, -16
- ;;
- .Ls10: st8 [r32] = r18, -16
- .Ls01: st8 [r20] = r19, -16
- .Ls00: mov.i ar.lc = r2
- br.ret.sptk.many b0
- EPILOGUE()
- ASM_END()