diff options
Diffstat (limited to 'gmp/mpn/x86_64/atom/rshift.asm')
| -rw-r--r-- | gmp/mpn/x86_64/atom/rshift.asm | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/gmp/mpn/x86_64/atom/rshift.asm b/gmp/mpn/x86_64/atom/rshift.asm deleted file mode 100644 index 29c027de49..0000000000 --- a/gmp/mpn/x86_64/atom/rshift.asm +++ /dev/null @@ -1,121 +0,0 @@ -dnl AMD64 mpn_rshift -- mpn right shift, optimised for Atom. - -dnl Contributed to the GNU project by Torbjorn Granlund. - -dnl Copyright 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 ? -C AMD K10 ? -C Intel P4 ? -C Intel core2 ? -C Intel NHM ? -C Intel SBR ? -C Intel atom 4.5 -C VIA nano ? - -C TODO -C * Consider using 4-way unrolling. We reach 4 c/l, but the code is 2.5 times -C larger. - -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) - shr R32(n) - mov (up), %rax - jnc L(evn) - - mov %rax, %r11 - shr R8(cnt), %r11 - neg R8(cnt) - shl R8(cnt), %rax - test n, n - jnz L(gt1) - mov %r11, (rp) - FUNC_EXIT() - ret - -L(gt1): mov 8(up), %r8 - mov %r8, %r10 - shl R8(cnt), %r8 - jmp L(lo1) - -L(evn): mov %rax, %r10 - neg R8(cnt) - shl R8(cnt), %rax - mov 8(up), %r9 - mov %r9, %r11 - shl R8(cnt), %r9 - neg R8(cnt) - dec n - lea -8(rp), rp - lea 8(up), up - jz L(end) - - ALIGN(8) -L(top): shr R8(cnt), %r10 - or %r10, %r9 - shr R8(cnt), %r11 - neg R8(cnt) - mov 8(up), %r8 - mov %r8, %r10 - mov %r9, 8(rp) - shl R8(cnt), %r8 - lea 16(rp), rp -L(lo1): mov 16(up), %r9 - or %r11, %r8 - mov %r9, %r11 - shl R8(cnt), %r9 - lea 16(up), up - neg R8(cnt) - mov %r8, (rp) - dec n - jg L(top) - -L(end): shr R8(cnt), %r10 - or %r10, %r9 - shr R8(cnt), %r11 - mov %r9, 8(rp) - mov %r11, 16(rp) - FUNC_EXIT() - ret -EPILOGUE() |