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dnl AMD64 SSE mpn_sec_tabselect.
dnl Contributed to the GNU project by Torbjörn Granlund.
dnl Copyright 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 cycles/limb cycles/limb
C ali,evn n unal,evn n other cases
C AMD K8,K9 1.65 1.65 1.8
C AMD K10 0.78 0.78 0.85
C AMD bd1 0.80 0.91 1.25
C AMD bobcat 2.15 2.15 2.37
C Intel P4 2.5 2.5 2.95
C Intel core2 1.17 1.25 1.25
C Intel NHM 0.87 0.90 0.90
C Intel SBR 0.63 0.79 0.77
C Intel atom 4.3 4.3 4.3 slower than plain code
C VIA nano 1.4 5.1 3.14 too alignment dependent
C NOTES
C * We only honour the least significant 32 bits of the `which' and `nents'
C arguments to allow efficient code using just SSE2. We would need to
C either use the SSE4_1 pcmpeqq, or find some other SSE2 sequence.
C * We use movd for copying between xmm and plain registers, since old gas
C rejects movq. But gas assembles movd as movq when given a 64-bit greg.
define(`rp', `%rdi')
define(`tp', `%rsi')
define(`n', `%rdx')
define(`nents', `%rcx')
define(`which', `%r8')
define(`i', `%r10')
define(`j', `%r9')
C rax rbx rcx rdx rdi rsi rbp r8 r9 r10 r11 r12 r13 r14 r15
C nents n rp tab which j i temp * * * *
ABI_SUPPORT(DOS64)
ABI_SUPPORT(STD64)
ASM_START()
TEXT
ALIGN(16)
PROLOGUE(mpn_sec_tabselect)
FUNC_ENTRY(4)
IFDOS(` mov 56(%rsp), %r8d ')
IFDOS(` add $-88, %rsp ')
IFDOS(` movdqu %xmm6, (%rsp) ')
IFDOS(` movdqu %xmm7, 16(%rsp) ')
IFDOS(` movdqu %xmm8, 32(%rsp) ')
IFDOS(` movdqu %xmm9, 48(%rsp) ')
movd which, %xmm8
pshufd $0, %xmm8, %xmm8 C 4 `which' copies
mov $1, R32(%rax)
movd %rax, %xmm9
pshufd $0, %xmm9, %xmm9 C 4 copies of 1
mov n, j
add $-8, j
js L(outer_end)
L(outer_top):
mov nents, i
mov tp, %r11
pxor %xmm1, %xmm1
pxor %xmm4, %xmm4
pxor %xmm5, %xmm5
pxor %xmm6, %xmm6
pxor %xmm7, %xmm7
ALIGN(16)
L(top): movdqa %xmm8, %xmm0
pcmpeqd %xmm1, %xmm0
paddd %xmm9, %xmm1
movdqu 0(tp), %xmm2
movdqu 16(tp), %xmm3
pand %xmm0, %xmm2
pand %xmm0, %xmm3
por %xmm2, %xmm4
por %xmm3, %xmm5
movdqu 32(tp), %xmm2
movdqu 48(tp), %xmm3
pand %xmm0, %xmm2
pand %xmm0, %xmm3
por %xmm2, %xmm6
por %xmm3, %xmm7
lea (tp,n,8), tp
add $-1, i
jne L(top)
movdqu %xmm4, 0(rp)
movdqu %xmm5, 16(rp)
movdqu %xmm6, 32(rp)
movdqu %xmm7, 48(rp)
lea 64(%r11), tp
lea 64(rp), rp
add $-8, j
jns L(outer_top)
L(outer_end):
test $4, R8(n)
je L(b0xx)
L(b1xx):mov nents, i
mov tp, %r11
pxor %xmm1, %xmm1
pxor %xmm4, %xmm4
pxor %xmm5, %xmm5
ALIGN(16)
L(tp4): movdqa %xmm8, %xmm0
pcmpeqd %xmm1, %xmm0
paddd %xmm9, %xmm1
movdqu 0(tp), %xmm2
movdqu 16(tp), %xmm3
pand %xmm0, %xmm2
pand %xmm0, %xmm3
por %xmm2, %xmm4
por %xmm3, %xmm5
lea (tp,n,8), tp
add $-1, i
jne L(tp4)
movdqu %xmm4, 0(rp)
movdqu %xmm5, 16(rp)
lea 32(%r11), tp
lea 32(rp), rp
L(b0xx):test $2, R8(n)
je L(b00x)
L(b01x):mov nents, i
mov tp, %r11
pxor %xmm1, %xmm1
pxor %xmm4, %xmm4
ALIGN(16)
L(tp2): movdqa %xmm8, %xmm0
pcmpeqd %xmm1, %xmm0
paddd %xmm9, %xmm1
movdqu 0(tp), %xmm2
pand %xmm0, %xmm2
por %xmm2, %xmm4
lea (tp,n,8), tp
add $-1, i
jne L(tp2)
movdqu %xmm4, 0(rp)
lea 16(%r11), tp
lea 16(rp), rp
L(b00x):test $1, R8(n)
je L(b000)
L(b001):mov nents, i
mov tp, %r11
pxor %xmm1, %xmm1
pxor %xmm4, %xmm4
ALIGN(16)
L(tp1): movdqa %xmm8, %xmm0
pcmpeqd %xmm1, %xmm0
paddd %xmm9, %xmm1
movq 0(tp), %xmm2
pand %xmm0, %xmm2
por %xmm2, %xmm4
lea (tp,n,8), tp
add $-1, i
jne L(tp1)
movq %xmm4, 0(rp)
L(b000):
IFDOS(` movdqu (%rsp), %xmm6 ')
IFDOS(` movdqu 16(%rsp), %xmm7 ')
IFDOS(` movdqu 32(%rsp), %xmm8 ')
IFDOS(` movdqu 48(%rsp), %xmm9 ')
IFDOS(` add $88, %rsp ')
FUNC_EXIT()
ret
EPILOGUE()
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