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dnl AMD64 mpn_addlsh_n, mpn_rsblsh_n.
dnl Copyright 2017 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 AMD K8,K9 n/a
C AMD K10 n/a
C AMD bd1 n/a
C AMD bd2 n/a
C AMD bd3 n/a
C AMD bd4 2.31
C AMD zn1 1.69
C AMD zn2 1.55
C AMD zn3 1.36
C AMD bt1 n/a
C AMD bt2 n/a
C Intel P4 n/a
C Intel PNR n/a
C Intel NHM n/a
C Intel SBR n/a
C Intel IBR n/a
C Intel HWL 2.08
C Intel BWL 1.78
C Intel SKL 1.78
C Intel atom n/a
C Intel SLM n/a
C VIA nano n/a
C TODO
C * Perhaps avoid using jrcxz by using dec n + jnz.
define(`rp', `%rdi')
define(`up', `%rsi')
define(`vp', `%rdx')
define(`n', `%rcx')
define(`cnt', `%r8')
define(`tnc', `%r9')
ifdef(`OPERATION_addlsh_n',`
define(ADCSBB, `adc')
define(func, mpn_addlsh_n)
')
ifdef(`OPERATION_rsblsh_n',`
define(ADCSBB, `sbb')
define(func, mpn_rsblsh_n)
')
MULFUNC_PROLOGUE(mpn_addlsh_n mpn_rsblsh_n)
ABI_SUPPORT(DOS64)
ABI_SUPPORT(STD64)
ASM_START()
TEXT
ALIGN(32)
PROLOGUE(func)
FUNC_ENTRY(4)
IFDOS(` mov 56(%rsp), %r8d ')
mov (vp), %r10
mov R32(n), R32(%rax)
shr $3, n
xor R32(tnc), R32(tnc)
sub cnt, tnc
and $7, R32(%rax)
lea L(tab)(%rip), %r11
ifdef(`PIC',`
movslq (%r11,%rax,4), %rax
add %r11, %rax
jmp *%rax
',`
jmp *(%r11,%rax,8)
')
L(0): lea 32(up), up
lea 32(vp), vp
lea 32(rp), rp
xor R32(%r11), R32(%r11)
jmp L(e0)
L(7): mov %r10, %r11
lea 24(up), up
lea 24(vp), vp
lea 24(rp), rp
xor R32(%r10), R32(%r10)
jmp L(e7)
L(6): lea 16(up), up
lea 16(vp), vp
lea 16(rp), rp
xor R32(%r11), R32(%r11)
jmp L(e6)
L(5): mov %r10, %r11
lea 8(up), up
lea 8(vp), vp
lea 8(rp), rp
xor R32(%r10), R32(%r10)
jmp L(e5)
L(end): ADCSBB 24(up), %rax
mov %rax, -40(rp)
shrx( tnc, %r11, %rax)
ADCSBB n, %rax
FUNC_EXIT()
ret
ALIGN(32)
L(top): jrcxz L(end)
mov -32(vp), %r10
ADCSBB 24(up), %rax
lea 64(up), up
shrx( tnc, %r11, %r11)
mov %rax, -40(rp)
L(e0): dec n
shlx( cnt, %r10, %rax)
lea (%r11,%rax), %rax
mov -24(vp), %r11
ADCSBB -32(up), %rax
shrx( tnc, %r10, %r10)
mov %rax, -32(rp)
L(e7): shlx( cnt, %r11, %rax)
lea (%r10,%rax), %rax
mov -16(vp), %r10
ADCSBB -24(up), %rax
shrx( tnc, %r11, %r11)
mov %rax, -24(rp)
L(e6): shlx( cnt, %r10, %rax)
lea (%r11,%rax), %rax
mov -8(vp), %r11
ADCSBB -16(up), %rax
shrx( tnc, %r10, %r10)
mov %rax, -16(rp)
L(e5): shlx( cnt, %r11, %rax)
lea (%r10,%rax), %rax
mov (vp), %r10
ADCSBB -8(up), %rax
shrx( tnc, %r11, %r11)
mov %rax, -8(rp)
L(e4): shlx( cnt, %r10, %rax)
lea (%r11,%rax), %rax
mov 8(vp), %r11
ADCSBB (up), %rax
shrx( tnc, %r10, %r10)
mov %rax, (rp)
L(e3): shlx( cnt, %r11, %rax)
lea (%r10,%rax), %rax
mov 16(vp), %r10
ADCSBB 8(up), %rax
shrx( tnc, %r11, %r11)
mov %rax, 8(rp)
L(e2): shlx( cnt, %r10, %rax)
lea (%r11,%rax), %rax
mov 24(vp), %r11
ADCSBB 16(up), %rax
lea 64(vp), vp
shrx( tnc, %r10, %r10)
mov %rax, 16(rp)
lea 64(rp), rp
L(e1): shlx( cnt, %r11, %rax)
lea (%r10,%rax), %rax
jmp L(top)
L(4): xor R32(%r11), R32(%r11)
jmp L(e4)
L(3): mov %r10, %r11
lea -8(up), up
lea -8(vp), vp
lea -8(rp), rp
xor R32(%r10), R32(%r10)
jmp L(e3)
L(2): lea -16(up), up
lea -16(vp), vp
lea -16(rp), rp
xor R32(%r11), R32(%r11)
jmp L(e2)
L(1): mov %r10, %r11
lea -24(up), up
lea 40(vp), vp
lea 40(rp), rp
xor R32(%r10), R32(%r10)
jmp L(e1)
EPILOGUE()
JUMPTABSECT
ALIGN(8)
L(tab): JMPENT( L(0), L(tab))
JMPENT( L(1), L(tab))
JMPENT( L(2), L(tab))
JMPENT( L(3), L(tab))
JMPENT( L(4), L(tab))
JMPENT( L(5), L(tab))
JMPENT( L(6), L(tab))
JMPENT( L(7), L(tab))
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