125 lines
3.0 KiB
NASM
125 lines
3.0 KiB
NASM
dnl IA-64 mpn_sub_n -- Subtract two limb vectors of the same length > 0 and
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dnl store difference in a third limb vector.
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dnl Copyright 2000, 2001, 2002 Free Software Foundation, Inc.
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dnl This file is part of the GNU MP Library.
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dnl The GNU MP Library is free software; you can redistribute it and/or modify
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dnl it under the terms of the GNU Lesser General Public License as published
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dnl by the Free Software Foundation; either version 2.1 of the License, or (at
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dnl your option) any later version.
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dnl The GNU MP Library is distributed in the hope that it will be useful, but
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dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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dnl License for more details.
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dnl You should have received a copy of the GNU Lesser General Public License
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dnl along with the GNU MP Library; see the file COPYING.LIB. If not, write
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dnl to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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dnl Boston, MA 02110-1301, USA.
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include(`../config.m4')
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C INPUT PARAMETERS
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C rp = r32
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C up = r33
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C vp = r34
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C n = r35
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C cycles/limb
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C Itanium: 6
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C Itanium 2: 3
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ASM_START()
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PROLOGUE(mpn_sub_n)
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.prologue
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ifdef(`HAVE_ABI_32',
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` addp4 r32 = 0, r32
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addp4 r33 = 0, r33
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addp4 r34 = 0, r34
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sxt4 r35 = r35
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;;
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')
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{ .mib; cmp.eq p6, p7 = 1, r35
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add r35 = -2, r35
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nop.b 0
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} { .mib; cmp.ne p8, p9 = r0, r0
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.save ar.lc, r2
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mov r2 = ar.lc
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.body
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nop.b 0 ;;
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} { .mib; ld8 r16 = [r33], 8
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mov ar.lc = r35
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nop.b 0
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} { .mib; ld8 r17 = [r34], 8
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nop.i 0
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(p6) br.dptk .Lend ;;
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}
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.align 32
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.Loop:
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.pred.rel "mutex",p8,p9
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{ .mii; mov r20 = r16
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(p8) sub r19 = r16, r17, 1
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(p9) sub r19 = r16, r17 ;;
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} { .mfi; ld8 r16 = [r33], 8
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nop.f 0
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(p8) cmp.leu p6, p7 = r20, r19
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} { .mfi; ld8 r17 = [r34], 8
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nop.f 0
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(p9) cmp.ltu p6, p7 = r20, r19
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} { .mbb; st8 [r32] = r19, 8
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nop.b 0
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br.cloop.dptk .Loopm ;;
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}
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.pred.rel "mutex",p6,p7
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{ .mfi; (p6) sub r19 = r16, r17, 1
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nop.f 0
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(p7) sub r19 = r16, r17 ;;
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} { .mii; st8 [r32] = r19
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(p6) cmp.leu p8, p9 = r16, r19
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(p7) cmp.ltu p8, p9 = r16, r19 ;;
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}
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.pred.rel "mutex",p8,p9
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{ .mfi; (p8) mov r8 = 1
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nop.f 0
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(p9) mov r8 = 0
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}
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mov ar.lc = r2
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br.ret.sptk.many b0
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.Loopm:
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.pred.rel "mutex",p6,p7
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{ .mii; mov r20 = r16
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(p6) sub r19 = r16, r17, 1
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(p7) sub r19 = r16, r17 ;;
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} { .mfi; ld8 r16 = [r33], 8
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nop.f 0
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(p6) cmp.leu p8, p9 = r20, r19
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} { .mfi; ld8 r17 = [r34], 8
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nop.f 0
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(p7) cmp.ltu p8, p9 = r20, r19
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} { .mbb; st8 [r32] = r19, 8
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nop.b 0
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br.cloop.dptk .Loop ;;
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}
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.Lend:
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.pred.rel "mutex",p8,p9
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{ .mfi; (p8) sub r19 = r16, r17, 1
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nop.f 0
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(p9) sub r19 = r16, r17 ;;
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} { .mii; st8 [r32] = r19
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(p8) cmp.leu p6, p7 = r16, r19
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(p9) cmp.ltu p6, p7 = r16, r19 ;;
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}
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.pred.rel "mutex",p6,p7
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{ .mfi; (p6) mov r8 = 1
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nop.f 0
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(p7) mov r8 = 0
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}
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mov ar.lc = r2
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br.ret.sptk.many b0
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EPILOGUE(mpn_sub_n)
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ASM_END()
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