From 11da511c784eca003deb90c23570f0873954e0de Mon Sep 17 00:00:00 2001 From: Duncan Wilkie Date: Sat, 18 Nov 2023 06:11:09 -0600 Subject: Initial commit. --- gmp-6.3.0/mpn/x86_64/fastsse/copyd-palignr.asm | 254 +++++++++++++++++++++++++ 1 file changed, 254 insertions(+) create mode 100644 gmp-6.3.0/mpn/x86_64/fastsse/copyd-palignr.asm (limited to 'gmp-6.3.0/mpn/x86_64/fastsse/copyd-palignr.asm') diff --git a/gmp-6.3.0/mpn/x86_64/fastsse/copyd-palignr.asm b/gmp-6.3.0/mpn/x86_64/fastsse/copyd-palignr.asm new file mode 100644 index 0000000..fac6f8a --- /dev/null +++ b/gmp-6.3.0/mpn/x86_64/fastsse/copyd-palignr.asm @@ -0,0 +1,254 @@ +dnl AMD64 mpn_copyd optimised for CPUs with fast SSE copying and SSSE3. + +dnl Copyright 2012, 2015 Free Software Foundation, Inc. + +dnl Contributed to the GNU project by Torbjorn Granlund. + +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 good +C aligned unaligned best seen for cpu? +C AMD K8,K9 2.0 illop 1.0/1.0 N +C AMD K10 0.85 illop Y/N +C AMD bull 0.70 0.70 Y +C AMD pile 0.68 0.68 Y +C AMD steam +C AMD excavator +C AMD bobcat 1.97 8.24 1.5/1.5 N +C AMD jaguar 0.77 0.89 0.65/opt N/Y +C Intel P4 2.26 illop Y/N +C Intel core 0.52 0.80 opt/opt Y +C Intel NHM 0.52 0.64 opt/opt Y +C Intel SBR 0.51 0.51 opt/opt Y +C Intel IBR 0.50 0.50 opt/opt Y +C Intel HWL 0.50 0.51 opt/opt Y +C Intel BWL 0.55 0.55 opt/opt Y +C Intel atom 1.16 1.66 opt/opt Y +C Intel SLM 1.02 1.04 opt/opt Y +C VIA nano 1.08 1.06 opt/opt Y + +C We use only 16-byte operations, except for unaligned top-most and bottom-most +C limbs. We use the SSSE3 palignr instruction when rp - up = 8 (mod 16). +C +C For operands of < COPYD_SSE_THRESHOLD limbs, we use a plain 64-bit loop, +C taken from the x86_64 default code. + +C INPUT PARAMETERS +define(`rp', `%rdi') +define(`up', `%rsi') +define(`n', `%rdx') + +C There are three instructions for loading an aligned 128-bit quantity. We use +C movaps, since it has the shortest coding. +define(`movdqa', ``movaps'') + +ifdef(`COPYD_SSE_THRESHOLD',`',`define(`COPYD_SSE_THRESHOLD', 7)') + +ASM_START() + TEXT + ALIGN(64) +PROLOGUE(mpn_copyd) + FUNC_ENTRY(3) + + lea -8(up,n,8), up + lea -8(rp,n,8), rp + + cmp $COPYD_SSE_THRESHOLD, n + jbe L(bc) + + test $8, R8(rp) C is rp 16-byte aligned? + jnz L(rp_aligned) C jump if rp aligned + + mov (up), %rax C copy one limb + mov %rax, (rp) + lea -8(up), up + lea -8(rp), rp + dec n + +L(rp_aligned): + test $8, R8(up) + jz L(uent) + +ifelse(eval(COPYD_SSE_THRESHOLD >= 8),1, +` sub $8, n', +` jmp L(am)') + + ALIGN(16) +L(atop):movdqa -8(up), %xmm0 + movdqa -24(up), %xmm1 + movdqa -40(up), %xmm2 + movdqa -56(up), %xmm3 + lea -64(up), up + movdqa %xmm0, -8(rp) + movdqa %xmm1, -24(rp) + movdqa %xmm2, -40(rp) + movdqa %xmm3, -56(rp) + lea -64(rp), rp +L(am): sub $8, n + jnc L(atop) + + test $4, R8(n) + jz 1f + movdqa -8(up), %xmm0 + movdqa -24(up), %xmm1 + lea -32(up), up + movdqa %xmm0, -8(rp) + movdqa %xmm1, -24(rp) + lea -32(rp), rp + +1: test $2, R8(n) + jz 1f + movdqa -8(up), %xmm0 + lea -16(up), up + movdqa %xmm0, -8(rp) + lea -16(rp), rp + +1: test $1, R8(n) + jz 1f + mov (up), %r8 + mov %r8, (rp) + +1: FUNC_EXIT() + ret + +L(uent):sub $16, n + movdqa (up), %xmm0 + jc L(uend) + + ALIGN(16) +L(utop):sub $16, n + movdqa -16(up), %xmm1 + palignr($8, %xmm1, %xmm0) + movdqa %xmm0, -8(rp) + movdqa -32(up), %xmm2 + palignr($8, %xmm2, %xmm1) + movdqa %xmm1, -24(rp) + movdqa -48(up), %xmm3 + palignr($8, %xmm3, %xmm2) + movdqa %xmm2, -40(rp) + movdqa -64(up), %xmm0 + palignr($8, %xmm0, %xmm3) + movdqa %xmm3, -56(rp) + movdqa -80(up), %xmm1 + palignr($8, %xmm1, %xmm0) + movdqa %xmm0, -72(rp) + movdqa -96(up), %xmm2 + palignr($8, %xmm2, %xmm1) + movdqa %xmm1, -88(rp) + movdqa -112(up), %xmm3 + palignr($8, %xmm3, %xmm2) + movdqa %xmm2, -104(rp) + movdqa -128(up), %xmm0 + palignr($8, %xmm0, %xmm3) + movdqa %xmm3, -120(rp) + lea -128(up), up + lea -128(rp), rp + jnc L(utop) + +L(uend):test $8, R8(n) + jz 1f + movdqa -16(up), %xmm1 + palignr($8, %xmm1, %xmm0) + movdqa %xmm0, -8(rp) + movdqa -32(up), %xmm0 + palignr($8, %xmm0, %xmm1) + movdqa %xmm1, -24(rp) + movdqa -48(up), %xmm1 + palignr($8, %xmm1, %xmm0) + movdqa %xmm0, -40(rp) + movdqa -64(up), %xmm0 + palignr($8, %xmm0, %xmm1) + movdqa %xmm1, -56(rp) + lea -64(up), up + lea -64(rp), rp + +1: test $4, R8(n) + jz 1f + movdqa -16(up), %xmm1 + palignr($8, %xmm1, %xmm0) + movdqa %xmm0, -8(rp) + movdqa -32(up), %xmm0 + palignr($8, %xmm0, %xmm1) + movdqa %xmm1, -24(rp) + lea -32(up), up + lea -32(rp), rp + +1: test $2, R8(n) + jz 1f + movdqa -16(up), %xmm1 + palignr($8, %xmm1, %xmm0) + movdqa %xmm0, -8(rp) + lea -16(up), up + lea -16(rp), rp + +1: test $1, R8(n) + jz 1f + mov (up), %r8 + mov %r8, (rp) + +1: FUNC_EXIT() + ret + +C Basecase code. Needed for good small operands speed, not for +C correctness as the above code is currently written. + +L(bc): sub $4, R32(n) + jc L(end) + + ALIGN(16) +L(top): mov (up), %r8 + mov -8(up), %r9 + lea -32(rp), rp + mov -16(up), %r10 + mov -24(up), %r11 + lea -32(up), up + mov %r8, 32(rp) + mov %r9, 24(rp) +ifelse(eval(COPYD_SSE_THRESHOLD >= 8),1, +` sub $4, R32(n)') + mov %r10, 16(rp) + mov %r11, 8(rp) +ifelse(eval(COPYD_SSE_THRESHOLD >= 8),1, +` jnc L(top)') + +L(end): test $1, R8(n) + jz 1f + mov (up), %r8 + mov %r8, (rp) + lea -8(rp), rp + lea -8(up), up +1: test $2, R8(n) + jz 1f + mov (up), %r8 + mov -8(up), %r9 + mov %r8, (rp) + mov %r9, -8(rp) +1: FUNC_EXIT() + ret +EPILOGUE() -- cgit v1.2.3