diff options
Diffstat (limited to 'Build/source/libs/gmp/gmp-6.0.0/mpn/x86_64/core2/rshift.asm')
-rw-r--r-- | Build/source/libs/gmp/gmp-6.0.0/mpn/x86_64/core2/rshift.asm | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/Build/source/libs/gmp/gmp-6.0.0/mpn/x86_64/core2/rshift.asm b/Build/source/libs/gmp/gmp-6.0.0/mpn/x86_64/core2/rshift.asm new file mode 100644 index 00000000000..ab32ec85dff --- /dev/null +++ b/Build/source/libs/gmp/gmp-6.0.0/mpn/x86_64/core2/rshift.asm @@ -0,0 +1,147 @@ +dnl x86-64 mpn_rshift optimized for "Core 2". + +dnl Copyright 2007, 2009, 2011, 2012 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 4.25 +C AMD K10 4.25 +C Intel P4 14.7 +C Intel core2 1.27 +C Intel NHM 1.375 (up to about n = 260, then 1.5) +C Intel SBR 1.77 +C Intel atom ? +C VIA nano ? + + +C INPUT PARAMETERS +define(`rp', `%rdi') +define(`up', `%rsi') +define(`n', `%rdx') +define(`cnt', `%rcx') + +ABI_SUPPORT(DOS64) +ABI_SUPPORT(STD64) + +ASM_START() + TEXT + ALIGN(16) +PROLOGUE(mpn_rshift) + FUNC_ENTRY(4) + mov R32(%rdx), R32(%rax) + and $3, R32(%rax) + jne L(nb00) +L(b00): C n = 4, 8, 12, ... + mov (up), %r10 + mov 8(up), %r11 + xor R32(%rax), R32(%rax) + shrd R8(cnt), %r10, %rax + mov 16(up), %r8 + lea 8(up), up + lea -24(rp), rp + sub $4, n + jmp L(00) + +L(nb00):C n = 1, 5, 9, ... + cmp $2, R32(%rax) + jae L(nb01) +L(b01): mov (up), %r9 + xor R32(%rax), R32(%rax) + shrd R8(cnt), %r9, %rax + sub $2, n + jb L(le1) + mov 8(up), %r10 + mov 16(up), %r11 + lea 16(up), up + lea -16(rp), rp + jmp L(01) +L(le1): shr R8(cnt), %r9 + mov %r9, (rp) + FUNC_EXIT() + ret + +L(nb01):C n = 2, 6, 10, ... + jne L(b11) +L(b10): mov (up), %r8 + mov 8(up), %r9 + xor R32(%rax), R32(%rax) + shrd R8(cnt), %r8, %rax + sub $3, n + jb L(le2) + mov 16(up), %r10 + lea 24(up), up + lea -8(rp), rp + jmp L(10) +L(le2): shrd R8(cnt), %r9, %r8 + mov %r8, (rp) + shr R8(cnt), %r9 + mov %r9, 8(rp) + FUNC_EXIT() + ret + + ALIGN(16) +L(b11): C n = 3, 7, 11, ... + mov (up), %r11 + mov 8(up), %r8 + xor R32(%rax), R32(%rax) + shrd R8(cnt), %r11, %rax + mov 16(up), %r9 + lea 32(up), up + sub $4, n + jb L(end) + + ALIGN(16) +L(top): shrd R8(cnt), %r8, %r11 + mov -8(up), %r10 + mov %r11, (rp) +L(10): shrd R8(cnt), %r9, %r8 + mov (up), %r11 + mov %r8, 8(rp) +L(01): shrd R8(cnt), %r10, %r9 + mov 8(up), %r8 + mov %r9, 16(rp) +L(00): shrd R8(cnt), %r11, %r10 + mov 16(up), %r9 + mov %r10, 24(rp) + add $32, up + lea 32(rp), rp + sub $4, n + jnc L(top) + +L(end): shrd R8(cnt), %r8, %r11 + mov %r11, (rp) + shrd R8(cnt), %r9, %r8 + mov %r8, 8(rp) + shr R8(cnt), %r9 + mov %r9, 16(rp) + FUNC_EXIT() + ret +EPILOGUE() |