155 lines
3.1 KiB
NASM
155 lines
3.1 KiB
NASM
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dnl AMD64 mpn_mul_1 using mulx optimised for Intel Haswell.
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dnl Contributed to the GNU project by Torbjörn Granlund.
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dnl Copyright 2012, 2013 Free Software Foundation, Inc.
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dnl This file is part of the GNU MP Library.
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dnl
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dnl The GNU MP Library is free software; you can redistribute it and/or modify
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dnl it under the terms of either:
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dnl
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dnl * the GNU Lesser General Public License as published by the Free
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dnl Software Foundation; either version 3 of the License, or (at your
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dnl option) any later version.
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dnl
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dnl or
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dnl
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dnl * the GNU General Public License as published by the Free Software
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dnl Foundation; either version 2 of the License, or (at your option) any
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dnl later version.
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dnl
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dnl or both in parallel, as here.
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dnl
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dnl The GNU MP Library is distributed in the hope that it will be useful, but
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dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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dnl for more details.
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dnl
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dnl You should have received copies of the GNU General Public License and the
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dnl GNU Lesser General Public License along with the GNU MP Library. If not,
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dnl see https://www.gnu.org/licenses/.
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include(`../config.m4')
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C cycles/limb best
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C AMD K8,K9 n/a
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C AMD K10 n/a
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C AMD bd1 n/a
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C AMD bd2 ?
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C AMD bobcat n/a
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C AMD jaguar ?
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C Intel P4 n/a
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C Intel PNR n/a
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C Intel NHM n/a
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C Intel SBR n/a
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C Intel IBR n/a
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C Intel HWL 1.57 this
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C Intel BWL ?
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C Intel atom n/a
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C VIA nano n/a
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C The loop of this code is the result of running a code generation and
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C optimisation tool suite written by David Harvey and Torbjorn Granlund.
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define(`rp', `%rdi') C rcx
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define(`up', `%rsi') C rdx
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define(`n_param', `%rdx') C r8
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define(`v0_param',`%rcx') C r9
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define(`n', `%rbp')
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define(`v0', `%rdx')
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ASM_START()
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TEXT
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ALIGN(32)
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PROLOGUE(mpn_mul_1)
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push %rbx
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push %rbp
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push %r12
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mov n_param, n
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shr $2, n
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test $1, R8(n_param)
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jnz L(bx1)
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L(bx0): test $2, R8(n_param)
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mov v0_param, v0
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jnz L(b10)
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L(b00): mulx (up), %r9, %r8
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mulx 8(up), %r11, %r10
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mulx 16(up), %rcx, %r12
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lea -32(rp), rp
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jmp L(lo0)
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L(b10): mulx (up), %rcx, %r12
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mulx 8(up), %rbx, %rax
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lea -16(rp), rp
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test n, n
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jz L(cj2)
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mulx 16(up), %r9, %r8
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lea 16(up), up
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jmp L(lo2)
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L(bx1): test $2, R8(n_param)
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mov v0_param, v0
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jnz L(b11)
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L(b01): mulx (up), %rbx, %rax
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lea -24(rp), rp
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test n, n
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jz L(cj1)
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mulx 8(up), %r9, %r8
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lea 8(up), up
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jmp L(lo1)
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L(b11): mulx (up), %r11, %r10
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mulx 8(up), %rcx, %r12
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mulx 16(up), %rbx, %rax
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lea -8(rp), rp
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test n, n
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jz L(cj3)
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lea 24(up), up
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jmp L(lo3)
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ALIGN(32)
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L(top): lea 32(rp), rp
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mov %r9, (rp)
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adc %r8, %r11
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L(lo3): mulx (up), %r9, %r8
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mov %r11, 8(rp)
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adc %r10, %rcx
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L(lo2): mov %rcx, 16(rp)
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adc %r12, %rbx
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L(lo1): mulx 8(up), %r11, %r10
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adc %rax, %r9
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mulx 16(up), %rcx, %r12
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mov %rbx, 24(rp)
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L(lo0): mulx 24(up), %rbx, %rax
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lea 32(up), up
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dec n
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jnz L(top)
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L(end): lea 32(rp), rp
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mov %r9, (rp)
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adc %r8, %r11
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L(cj3): mov %r11, 8(rp)
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adc %r10, %rcx
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L(cj2): mov %rcx, 16(rp)
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adc %r12, %rbx
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L(cj1): mov %rbx, 24(rp)
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adc $0, %rax
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pop %r12
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pop %rbp
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pop %rbx
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ret
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EPILOGUE()
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