mirror of
https://review.haiku-os.org/buildtools
synced 2025-02-12 08:47:41 +01:00
f133d007f9
Old version was from 2012-05-06, 6.1.2 is from 2016-12-16 A lot of support for newer processors and speedups since then See gmp/NEWS for details
96 lines
2.3 KiB
NASM
96 lines
2.3 KiB
NASM
dnl Alpha mpn_invert_limb -- Invert a normalized limb.
|
|
|
|
dnl Copyright 1996, 2000-2003, 2007, 2011, 2013 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 EV4: ?
|
|
C EV5: 137/140 (with BWX/without BWX)
|
|
C EV6: 71/72 (with BWX/without BWX)
|
|
|
|
C This was compiler generated, with minimal manual edits. Surely several
|
|
C cycles could be cut with some thought.
|
|
|
|
ASM_START()
|
|
PROLOGUE(mpn_invert_limb,gp)
|
|
LEA( r2, approx_tab)
|
|
srl r16, 54, r1
|
|
srl r16, 24, r4
|
|
and r16, 1, r5
|
|
bic r1, 1, r7
|
|
lda r4, 1(r4)
|
|
srl r16, 1, r3
|
|
addq r7, r2, r1
|
|
ifelse(bwx_available_p,1,`
|
|
ldwu r0, -512(r1)
|
|
',`
|
|
ldq_u r0, -512(r1)
|
|
extwl r0, r7, r0
|
|
')
|
|
addq r3, r5, r3
|
|
mull r0, r0, r1
|
|
sll r0, 11, r0
|
|
mulq r1, r4, r1
|
|
srl r1, 40, r1
|
|
subq r0, r1, r0
|
|
lda r0, -1(r0)
|
|
mulq r0, r0, r2
|
|
sll r0, 60, r1
|
|
sll r0, 13, r0
|
|
mulq r2, r4, r2
|
|
subq r1, r2, r1
|
|
srl r1, 47, r1
|
|
addq r0, r1, r0
|
|
mulq r0, r3, r3
|
|
srl r0, 1, r1
|
|
cmoveq r5, 0, r1
|
|
subq r1, r3, r1
|
|
umulh r1, r0, r3
|
|
sll r0, 31, r0
|
|
srl r3, 1, r1
|
|
addq r0, r1, r0
|
|
mulq r0, r16, r2
|
|
umulh r0, r16, r3
|
|
addq r2, r16, r1
|
|
addq r3, r16, r16
|
|
cmpult r1, r2, r1
|
|
addq r16, r1, r3
|
|
subq r0, r3, r0
|
|
ret r31, (r26), 1
|
|
EPILOGUE()
|
|
DATASTART(approx_tab,8)
|
|
forloop(i,256,512-1,dnl
|
|
` .word eval(0x7fd00/i)
|
|
')dnl
|
|
SIZE(approx_tab, 512)
|
|
TYPE(approx_tab, object)
|
|
DATAEND()
|
|
ASM_END()
|