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dnl ARM64 mpn_sqr_diag_addlsh1.
dnl Contributed to the GNU project by Torbjörn Granlund.
dnl Copyright 2016, 2017 Free Software Foundation, Inc.
dnl This file is part of the GNU MP Library.
dnl
dnl The GNU MP Library is free software; you can redistribute it and/or modify
dnl it under the terms of either:
dnl
dnl * the GNU Lesser General Public License as published by the Free
dnl Software Foundation; either version 3 of the License, or (at your
dnl option) any later version.
dnl
dnl or
dnl
dnl * the GNU General Public License as published by the Free Software
dnl Foundation; either version 2 of the License, or (at your option) any
dnl later version.
dnl
dnl or both in parallel, as here.
dnl
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 General Public License
dnl for more details.
dnl
dnl You should have received copies of the GNU General Public License and the
dnl GNU Lesser General Public License along with the GNU MP Library. If not,
dnl see https://www.gnu.org/licenses/.
include(`../config.m4')
C cycles/limb
C Cortex-A53 5.65
C Cortex-A57 3.5
C X-Gene 3.38
changecom(blah)
define(`rp', `x0')
define(`tp', `x1')
define(`up', `x2')
define(`n', `x3')
ASM_START()
PROLOGUE(mpn_sqr_diag_addlsh1)
ldr x15, [up],#8
lsr x14, n, #1
tbz n, #0, L(bx0)
L(bx1): adds x7, xzr, xzr
mul x12, x15, x15
ldr x16, [up],#8
ldp x4, x5, [tp],#16
umulh x11, x15, x15
b L(mid)
L(bx0): adds x5, xzr, xzr
mul x12, x15, x15
ldr x17, [up],#16
ldp x6, x7, [tp],#32
umulh x11, x15, x15
sub x14, x14, #1
cbz x14, L(end)
ALIGN(16)
L(top): extr x9, x6, x5, #63
mul x10, x17, x17
ldr x16, [up,#-8]
adcs x13, x9, x11
ldp x4, x5, [tp,#-16]
umulh x11, x17, x17
extr x8, x7, x6, #63
stp x12, x13, [rp],#16
adcs x12, x8, x10
L(mid): extr x9, x4, x7, #63
mul x10, x16, x16
ldr x17, [up],#16
adcs x13, x9, x11
ldp x6, x7, [tp],#32
umulh x11, x16, x16
extr x8, x5, x4, #63
stp x12, x13, [rp],#16
adcs x12, x8, x10
sub x14, x14, #1
cbnz x14, L(top)
L(end): extr x9, x6, x5, #63
mul x10, x17, x17
adcs x13, x9, x11
umulh x11, x17, x17
extr x8, x7, x6, #63
stp x12, x13, [rp]
adcs x12, x8, x10
extr x9, xzr, x7, #63
adcs x13, x9, x11
stp x12, x13, [rp,#16]
ret
EPILOGUE()
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