diff options
author | Thomas Voss <mail@thomasvoss.com> | 2024-06-21 23:36:36 +0200 |
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committer | Thomas Voss <mail@thomasvoss.com> | 2024-06-21 23:42:26 +0200 |
commit | a89a14ef5da44684a16b204e7a70460cc8c4922a (patch) | |
tree | b23b4c6b155977909ef508fdae2f48d33d802813 /vendor/gmp-6.3.0/mpn/powerpc64/mode64/p7/gcd_11.asm | |
parent | 1db63fcedab0b288820d66e100b1877b1a5a8851 (diff) |
Basic constant folding implementation
Diffstat (limited to 'vendor/gmp-6.3.0/mpn/powerpc64/mode64/p7/gcd_11.asm')
-rw-r--r-- | vendor/gmp-6.3.0/mpn/powerpc64/mode64/p7/gcd_11.asm | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/vendor/gmp-6.3.0/mpn/powerpc64/mode64/p7/gcd_11.asm b/vendor/gmp-6.3.0/mpn/powerpc64/mode64/p7/gcd_11.asm new file mode 100644 index 0000000..f04e896 --- /dev/null +++ b/vendor/gmp-6.3.0/mpn/powerpc64/mode64/p7/gcd_11.asm @@ -0,0 +1,67 @@ +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 - +C POWER5 - +C POWER6 - +C POWER7 7.6 obsolete +C POWER8 ? +C POWER9 ? +C Numbers measured with: speed -CD -s16-64 -t48 mpn_gcd_1 + +C INPUT PARAMETERS +define(`u0', `r3') +define(`v0', `r4') + +define(`cnt', `r9')dnl + +ASM_START() +PROLOGUE(mpn_gcd_11) + li r12, 63 + b L(odd) + + ALIGN(16) +L(top): and r8, r11, r10 C isolate lsb + cntlzd cnt, r8 + isel v0, u0, v0, 29 C v = min(u,v) + isel u0, r10, r11, 29 C u = |u - v| + subf cnt, cnt, r12 C cnt = 63-cnt + srd u0, u0, cnt +L(odd): cmpld cr7, v0, u0 + subf r10, u0, v0 C r10 = v - u + subf r11, v0, u0 C r11 = u - v + bne cr7, L(top) + +L(end): blr +EPILOGUE() |