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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()
|
