head	1.1;
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access;
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	netbsd-11-0-RC3:1.1.1.2
	netbsd-11-0-RC2:1.1.1.2
	netbsd-11-0-RC1:1.1.1.2
	perseant-exfatfs-base-20250801:1.1.1.2
	netbsd-11:1.1.1.2.0.6
	netbsd-11-base:1.1.1.2
	netbsd-10-1-RELEASE:1.1.1.2
	perseant-exfatfs-base-20240630:1.1.1.2
	perseant-exfatfs:1.1.1.2.0.4
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	netbsd-10-0-RELEASE:1.1.1.2
	netbsd-10-0-RC6:1.1.1.2
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	netbsd-10-0-RC4:1.1.1.2
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	netbsd-10-0-RC2:1.1.1.2
	netbsd-10-0-RC1:1.1.1.2
	netbsd-10:1.1.1.2.0.2
	netbsd-10-base:1.1.1.2
	gmp-6-2-1:1.1.1.2
	cjep_sun2x-base1:1.1.1.1
	cjep_sun2x:1.1.1.1.0.4
	cjep_sun2x-base:1.1.1.1
	cjep_staticlib_x-base1:1.1.1.1
	cjep_staticlib_x:1.1.1.1.0.2
	cjep_staticlib_x-base:1.1.1.1
	gmp-6-2-0:1.1.1.1
	gmp:1.1.1;
locks; strict;
comment	@;; @;


1.1
date	2020.09.27.00.27.05;	author mrg;	state Exp;
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	1.1.1.1;
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1.1.1.1
date	2020.09.27.00.27.05;	author mrg;	state Exp;
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next	1.1.1.2;
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1.1.1.2
date	2021.07.11.21.14.45;	author mrg;	state Exp;
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commitid	saHZLNSlLcjF8C0D;


desc
@@


1.1
log
@Initial revision
@
text
@dnl  ARM64 mpn_lshiftc.

dnl  Copyright 2013, 2014, 2017 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   assumed optimal c/l
C Cortex-A53	3.5-4.0		 3.25
C Cortex-A57	 2.0		 2.0
C X-Gene	 2.67		 2.5

C TODO
C  * The feed-in code used 1 ldr for odd sized and 2 ldr for even sizes.  These
C    numbers should be 1 and 0, respectively.  The str in wind-down should also
C    go.
C  * Using extr and with 63 separate loops we might reach 1.5 c/l on A57.
C  * A53's speed depends on alignment, tune/speed -w1 gives 3.5, -w0 gives 4.0.

changecom(blah)

define(`rp_arg', `x0')
define(`up',     `x1')
define(`n',      `x2')
define(`cnt',    `x3')

define(`rp',     `x16')

define(`tnc',`x8')

define(`PSHIFT', lsl)
define(`NSHIFT', lsr)

ASM_START()
PROLOGUE(mpn_lshiftc)
	add	rp, rp_arg, n, lsl #3
	add	up, up, n, lsl #3
	sub	tnc, xzr, cnt
	lsr	x18, n, #2
	tbz	n, #0, L(bx0)

L(bx1):	ldr	x4, [up,#-8]
	tbnz	n, #1, L(b11)

L(b01):	NSHIFT	x0, x4, tnc
	PSHIFT	x2, x4, cnt
	cbnz	x18, L(gt1)
	mvn	x2, x2
	str	x2, [rp,#-8]
	ret
L(gt1):	ldp	x4, x5, [up,#-24]
	sub	up, up, #8
	add	rp, rp, #16
	b	L(lo2)

L(b11):	NSHIFT	x0, x4, tnc
	PSHIFT	x2, x4, cnt
	ldp	x6, x7, [up,#-24]!
	b	L(lo3)

L(bx0):	ldp	x4, x5, [up,#-16]
	tbz	n, #1, L(b00)

L(b10):	NSHIFT	x0, x5, tnc
	PSHIFT	x13, x5, cnt
	NSHIFT	x10, x4, tnc
	PSHIFT	x2, x4, cnt
	cbnz	x18, L(gt2)
	eon	x10, x10, x13
	mvn	x2, x2
	stp	x2, x10, [rp,#-16]
	ret
L(gt2):	ldp	x4, x5, [up,#-32]
	eon	x10, x10, x13
	str	x10, [rp,#-8]
	sub	up, up, #16
	add	rp, rp, #8
	b	L(lo2)

L(b00):	NSHIFT	x0, x5, tnc
	PSHIFT	x13, x5, cnt
	NSHIFT	x10, x4, tnc
	PSHIFT	x2, x4, cnt
	ldp	x6, x7, [up,#-32]!
	eon	x10, x10, x13
	str	x10, [rp,#-8]!
	b	L(lo0)

	ALIGN(16)
L(top):	ldp	x4, x5, [up,#-16]
	eon	x10, x10, x13
	eon	x11, x12, x2
	stp	x10, x11, [rp,#-16]
	PSHIFT	x2, x6, cnt
L(lo2):	NSHIFT	x10, x4, tnc
	PSHIFT	x13, x5, cnt
	NSHIFT	x12, x5, tnc
	ldp	x6, x7, [up,#-32]!
	eon	x10, x10, x13
	eon	x11, x12, x2
	stp	x10, x11, [rp,#-32]!
	PSHIFT	x2, x4, cnt
L(lo0):	sub	x18, x18, #1
L(lo3):	NSHIFT	x10, x6, tnc
	PSHIFT	x13, x7, cnt
	NSHIFT	x12, x7, tnc
	cbnz	x18, L(top)

L(end):	eon	x10, x10, x13
	eon	x11, x12, x2
	PSHIFT	x2, x6, cnt
	stp	x10, x11, [rp,#-16]
	mvn	x2, x2
	str	x2, [rp,#-24]
	ret
EPILOGUE()
@


1.1.1.1
log
@initial import of GMP 6.2.0.  changes include:

- Bug fixes to gmp_snprintf, conversion to double, mpz_powm,
  and mpf_set_str.
- New functions for factorial, primorial, fibonacci, mpz_2fac_ui,
  and mpz_mfac_uiui.
- MIPS r6 cores are now supported.
- Various speeds ups.
@
text
@@


1.1.1.2
log
@initial import of GMP 6.2.1.  from their NEWS:

Changes between GMP version 6.2.0 and 6.2.1

  BUGS FIXED
  * A possible overflow of type int is avoided for mpz_cmp on huge operands.
  * Overflows are more carefully detected and reported for mpz_pow_ui.
  * A bug in longlong.h for aarch64 sub_ddmmss, not affecting GMP, was healed.

  FEATURES
  * C90 compliance.
  * Initial support for Darwin on arm64, and improved portability.
  * Support for more processors.
@
text
@d6 1
a6 1
dnl
d8 4
a11 14
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
d14 5
a18 6
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/.
@