Blame sysdeps/alpha/add_n.S

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 # Alpha __mpn_add_n -- Add two limb vectors of the same length > 0 and
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 # store sum in a third limb vector.
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 # Copyright (C) 1995-2018 Free Software Foundation, Inc.
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 # This file is part of the GNU MP Library.
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 # The GNU MP Library is free software; you can redistribute it and/or modify
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 # it under the terms of the GNU Lesser General Public License as published by
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 # the Free Software Foundation; either version 2.1 of the License, or (at your
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 # option) any later version.
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 # The GNU MP Library is distributed in the hope that it will be useful, but
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 # WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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 # or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
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 # License for more details.
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 # You should have received a copy of the GNU Lesser General Public License
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 # along with the GNU MP Library.  If not, see <http://www.gnu.org/licenses/>.
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 # INPUT PARAMETERS
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 # res_ptr	$16
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 # s1_ptr	$17
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 # s2_ptr	$18
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 # size		$19
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	.set	noreorder
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	.set	noat
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.text
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	.align	3
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	.globl	__mpn_add_n
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	.ent	__mpn_add_n
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__mpn_add_n:
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	.frame	$30,0,$26,0
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	ldq	$3,0($17)
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	ldq	$4,0($18)
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	subq	$19,1,$19
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	and	$19,4-1,$2	# number of limbs in first loop
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	bis	$31,$31,$0
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	beq	$2,.L0		# if multiple of 4 limbs, skip first loop
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	subq	$19,$2,$19
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.Loop0:	subq	$2,1,$2
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	ldq	$5,8($17)
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	addq	$4,$0,$4
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	ldq	$6,8($18)
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	cmpult	$4,$0,$1
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	addq	$3,$4,$4
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	cmpult	$4,$3,$0
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	stq	$4,0($16)
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	or	$0,$1,$0
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	addq	$17,8,$17
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	addq	$18,8,$18
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	bis	$5,$5,$3
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	bis	$6,$6,$4
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	addq	$16,8,$16
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	bne	$2,.Loop0
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.L0:	beq	$19,.Lend
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	.align	3
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.Loop:	subq	$19,4,$19
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	ldq	$5,8($17)
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	addq	$4,$0,$4
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	ldq	$6,8($18)
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	cmpult	$4,$0,$1
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	addq	$3,$4,$4
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	cmpult	$4,$3,$0
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	stq	$4,0($16)
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	or	$0,$1,$0
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	ldq	$3,16($17)
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	addq	$6,$0,$6
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	ldq	$4,16($18)
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	cmpult	$6,$0,$1
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	addq	$5,$6,$6
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	cmpult	$6,$5,$0
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	stq	$6,8($16)
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	or	$0,$1,$0
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	ldq	$5,24($17)
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	addq	$4,$0,$4
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	ldq	$6,24($18)
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	cmpult	$4,$0,$1
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	addq	$3,$4,$4
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	cmpult	$4,$3,$0
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	stq	$4,16($16)
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	or	$0,$1,$0
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	ldq	$3,32($17)
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	addq	$6,$0,$6
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	ldq	$4,32($18)
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	cmpult	$6,$0,$1
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	addq	$5,$6,$6
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	cmpult	$6,$5,$0
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	stq	$6,24($16)
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	or	$0,$1,$0
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	addq	$17,32,$17
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	addq	$18,32,$18
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	addq	$16,32,$16
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	bne	$19,.Loop
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.Lend:	addq	$4,$0,$4
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	cmpult	$4,$0,$1
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	addq	$3,$4,$4
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	cmpult	$4,$3,$0
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	stq	$4,0($16)
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	or	$0,$1,$0
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	ret	$31,($26),1
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	.end	__mpn_add_n