diff options
Diffstat (limited to 'gmp-6.3.0/mpn/powerpc64/mode64/gcd_11.asm')
| -rw-r--r-- | gmp-6.3.0/mpn/powerpc64/mode64/gcd_11.asm | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/gmp-6.3.0/mpn/powerpc64/mode64/gcd_11.asm b/gmp-6.3.0/mpn/powerpc64/mode64/gcd_11.asm new file mode 100644 index 0000000..f9792e5 --- /dev/null +++ b/gmp-6.3.0/mpn/powerpc64/mode64/gcd_11.asm @@ -0,0 +1,77 @@ +dnl PowerPC-64 mpn_gcd_11. + +dnl Copyright 2000-2002, 2005, 2009, 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/bit (approx) +C POWER3/PPC630 ? +C POWER4/PPC970 8.5 obsolete +C POWER5 ? +C POWER6 ? +C POWER7 9.4 obsolete +C POWER8 ? +C POWER9 ? +C Numbers measured with: speed -CD -s16-64 -t48 mpn_gcd_1 + +define(`u0', `r3') +define(`v0', `r4') + +define(`mask', `r0')dnl +define(`a1', `r4')dnl +define(`a2', `r5')dnl +define(`d1', `r6')dnl +define(`d2', `r7')dnl +define(`cnt', `r9')dnl + +ASM_START() +PROLOGUE(mpn_gcd_11) + li r12, 63 + mr r8, v0 + subf. r10, u0, v0 C r10 = d - a + beq L(end) + + ALIGN(16) +L(top): subfc r11, r8, r3 C r11 = a - d + and d2, r11, r10 + subfe mask, mask, mask + cntlzd cnt, d2 + and a1, r10, mask C d - a + andc a2, r11, mask C a - d + and d1, r3, mask C a + andc d2, r8, mask C d + or r3, a1, a2 C new a + subf cnt, cnt, r12 + or r8, d1, d2 C new d + srd r3, r3, cnt + subf. r10, r3, r8 C r10 = d - a + bne L(top) + +L(end): blr +EPILOGUE() |