dnl HP-PA mpn_add_n --
Add two limb vectors of the same length > 0
and store
dnl sum in a third limb vector.
dnl Copyright 1992, 1994, 2000-2002 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 INPUT PARAMETERS
C res_ptr gr26
C s1_ptr gr25
C s2_ptr gr24
C size gr23
C One might want to unroll
this as
for other processors, but it turns out that
C the
data cache contention after a store makes such unrolling useless. We
C can
't come under 5 cycles/limb anyway.
ASM_START()
PROLOGUE(mpn_add_n)
ldws,ma 4(0,%r25),%r20
ldws,ma 4(0,%r24),%r19
addib,= -1,%r23,L(
end) C check
for (SIZE == 1)
add %r20,%r19,%r28 C
add first limbs ignoring cy
LDEF(loop)
ldws,ma 4(0,%r25),%r20
ldws,ma 4(0,%r24),%r19
stws,ma %r28,4(0,%r26)
addib,<> -1,%r23,L(loop)
addc %r20,%r19,%r28
LDEF(
end)
stws %r28,0(0,%r26)
bv 0(%r2)
addc %r0,%r0,%r28
EPILOGUE()
