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dnl PA64 mpn_addlsh1_n/mpn_sublsh1_n -- rp[] = up[] +- (vp[] << 1).
dnl Copyright 2003 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 8000,8200: 2
C 8500,8600,8700: 1.75
C TODO
C * Write special feed-in code for each (n mod 8). (See the ia64 code.)
C * Try to make this run at closer to 1.5 c/l.
C * Set up register aliases (define(`u0',`%r19')).
C * Explicitly align loop.
dnl INPUT PARAMETERS
define(`rp',`%r26')
define(`up',`%r25')
define(`vp',`%r24')
define(`n',`%r23')
ifdef(`OPERATION_addlsh1_n',`
define(ADCSBC, `add,dc')
define(INITC, `ldi 0,')
define(func, mpn_addlsh1_n)
')
ifdef(`OPERATION_sublsh1_n',`
define(ADCSBC, `sub,db')
define(INITC, `ldi 1,')
define(func, mpn_sublsh1_n)
')
MULFUNC_PROLOGUE(mpn_addlsh1_n mpn_sublsh1_n)
ifdef(`HAVE_ABI_2_0w',`
define(LEVEL, `.level 2.0w')
define(RETREG, `%r28')
define(CLRRET1, `dnl')
')
ifdef(`HAVE_ABI_2_0n',`
define(LEVEL, `.level 2.0')
define(RETREG, `%r29')
define(CLRRET1, `ldi 0, %r28')
')
LEVEL
PROLOGUE(func)
std,ma %r3, 0x100(%r30) C save reg
INITC %r1 C init saved cy
C Primitive code for the first (n mod 8) limbs:
extrd,u n, 63, 3, %r22 C count for loop0
comib,= 0, %r22, L(unrolled) C skip loop0?
copy %r0, %r28
LDEF(loop0)
ldd 0(vp), %r21
ldo 8(vp), vp
ldd 0(up), %r19
ldo 8(up), up
shrpd %r21, %r28, 63, %r31
addi -1, %r1, %r0 C restore cy
ADCSBC %r19, %r31, %r29
std %r29, 0(rp)
add,dc %r0, %r0, %r1 C save cy
copy %r21, %r28
addib,> -1, %r22, L(loop0)
ldo 8(rp), rp
addib,>= -8, n, L(unrolled)
addi -1, %r1, %r0 C restore cy
shrpd %r0, %r28, 63, %r28
ADCSBC %r0, %r28, RETREG
ifdef(`OPERATION_sublsh1_n',
` sub %r0, RETREG, RETREG')
CLRRET1
bve (%r2)
ldd,mb -0x100(%r30), %r3
LDEF(unrolled)
std %r4, -0xf8(%r30) C save reg
ldd 0(vp), %r4
std %r5, -0xf0(%r30) C save reg
ldd 8(vp), %r5
std %r6, -0xe8(%r30) C save reg
ldd 16(vp), %r6
std %r7, -0xe0(%r30) C save reg
ldd 24(vp), %r7
shrpd %r4, %r28, 63, %r31
std %r8, -0xd8(%r30) C save reg
ldd 32(vp), %r8
shrpd %r5, %r4, 63, %r4
std %r9, -0xd0(%r30) C save reg
ldd 40(vp), %r9
shrpd %r6, %r5, 63, %r5
ldd 48(vp), %r3
shrpd %r7, %r6, 63, %r6
ldd 56(vp), %r28
shrpd %r8, %r7, 63, %r7
ldd 0(up), %r19
shrpd %r9, %r8, 63, %r8
ldd 8(up), %r20
shrpd %r3, %r9, 63, %r9
ldd 16(up), %r21
shrpd %r28, %r3, 63, %r3
ldd 24(up), %r22
nop C alignment FIXME
addib,<= -8, n, L(end)
addi -1, %r1, %r0 C restore cy
LDEF(loop)
ADCSBC %r19, %r31, %r29
ldd 32(up), %r19
std %r29, 0(rp)
ADCSBC %r20, %r4, %r29
ldd 40(up), %r20
std %r29, 8(rp)
ADCSBC %r21, %r5, %r29
ldd 48(up), %r21
std %r29, 16(rp)
ADCSBC %r22, %r6, %r29
ldd 56(up), %r22
std %r29, 24(rp)
ADCSBC %r19, %r7, %r29
ldd 64(vp), %r4
std %r29, 32(rp)
ADCSBC %r20, %r8, %r29
ldd 72(vp), %r5
std %r29, 40(rp)
ADCSBC %r21, %r9, %r29
ldd 80(vp), %r6
std %r29, 48(rp)
ADCSBC %r22, %r3, %r29
std %r29, 56(rp)
add,dc %r0, %r0, %r1 C save cy
ldd 88(vp), %r7
shrpd %r4, %r28, 63, %r31
ldd 96(vp), %r8
shrpd %r5, %r4, 63, %r4
ldd 104(vp), %r9
shrpd %r6, %r5, 63, %r5
ldd 112(vp), %r3
shrpd %r7, %r6, 63, %r6
ldd 120(vp), %r28
shrpd %r8, %r7, 63, %r7
ldd 64(up), %r19
shrpd %r9, %r8, 63, %r8
ldd 72(up), %r20
shrpd %r3, %r9, 63, %r9
ldd 80(up), %r21
shrpd %r28, %r3, 63, %r3
ldd 88(up), %r22
ldo 64(vp), vp
ldo 64(rp), rp
ldo 64(up), up
addib,> -8, n, L(loop)
addi -1, %r1, %r0 C restore cy
LDEF(end)
ADCSBC %r19, %r31, %r29
ldd 32(up), %r19
std %r29, 0(rp)
ADCSBC %r20, %r4, %r29
ldd 40(up), %r20
std %r29, 8(rp)
ADCSBC %r21, %r5, %r29
ldd 48(up), %r21
std %r29, 16(rp)
ADCSBC %r22, %r6, %r29
ldd 56(up), %r22
std %r29, 24(rp)
ADCSBC %r19, %r7, %r29
ldd -0xf8(%r30), %r4 C restore reg
std %r29, 32(rp)
ADCSBC %r20, %r8, %r29
ldd -0xf0(%r30), %r5 C restore reg
std %r29, 40(rp)
ADCSBC %r21, %r9, %r29
ldd -0xe8(%r30), %r6 C restore reg
std %r29, 48(rp)
ADCSBC %r22, %r3, %r29
ldd -0xe0(%r30), %r7 C restore reg
std %r29, 56(rp)
shrpd %r0, %r28, 63, %r28
ldd -0xd8(%r30), %r8 C restore reg
ADCSBC %r0, %r28, RETREG
ifdef(`OPERATION_sublsh1_n',
` sub %r0, RETREG, RETREG')
CLRRET1
ldd -0xd0(%r30), %r9 C restore reg
bve (%r2)
ldd,mb -0x100(%r30), %r3 C restore reg
EPILOGUE()
|
