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|
dnl X86-64 mpn_redc_1 optimised for Intel Atom.
dnl Contributed to the GNU project by Torbjörn Granlund.
dnl Copyright 2003-2005, 2007, 2008, 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/limb
C AMD K8,K9 ?
C AMD K10 ?
C AMD bull ?
C AMD pile ?
C AMD steam ?
C AMD bobcat 5.0
C AMD jaguar ?
C Intel P4 ?
C Intel core ?
C Intel NHM ?
C Intel SBR ?
C Intel IBR ?
C Intel HWL ?
C Intel BWL ?
C Intel atom ?
C VIA nano ?
C TODO
C * Micro-optimise, none performed thus far.
C * Consider inlining mpn_add_n.
C * Single basecases out before the pushes.
C * Make lead-in code for the inner loops be more similar.
C When playing with pointers, set this to $2 to fall back to conservative
C indexing in wind-down code.
define(`I',`$1')
define(`rp', `%rdi') C rcx
define(`up', `%rsi') C rdx
define(`mp_param', `%rdx') C r8
define(`n', `%rcx') C r9
define(`u0inv', `%r8') C stack
define(`i', `%r14')
define(`j', `%r15')
define(`mp', `%r12')
define(`q0', `%r13')
define(`w0', `%rbp')
define(`w1', `%r9')
define(`w2', `%r10')
define(`w3', `%r11')
C rax rbx rcx rdx rdi rsi rbp r8 r9 r10 r11 r12 r13 r14 r15
ABI_SUPPORT(DOS64)
ABI_SUPPORT(STD64)
define(`ALIGNx', `ALIGN(16)')
ASM_START()
TEXT
ALIGN(32)
PROLOGUE(mpn_redc_1)
FUNC_ENTRY(4)
IFDOS(` mov 56(%rsp), %r8 ')
push %rbx
push %rbp
push %r12
push %r13
push %r14
push %r15
mov (up), q0
mov n, j C outer loop induction var
lea (mp_param,n,8), mp
lea (up,n,8), up
neg n
imul u0inv, q0 C first iteration q0
test $1, R8(n)
jz L(bx0)
L(bx1): test $2, R8(n)
jz L(b3)
L(b1): cmp $-1, R32(n)
jz L(n1)
L(otp1):lea 1(n), i
mov (mp,n,8), %rax
mul q0
mov %rax, %rbp
mov 8(mp,n,8), %rax
mov %rdx, %r9
mul q0
mov %rax, %rbx
mov 16(mp,n,8), %rax
mov %rdx, %r10
mul q0
add (up,n,8), %rbp
mov %rax, %rbp
adc %r9, %rbx
mov 24(mp,n,8), %rax
adc $0, %r10
mov %rdx, %r9
mul q0
add 8(up,n,8), %rbx
mov %rbx, 8(up,n,8)
mov %rax, %r11
adc %r10, %rbp
mov 32(mp,n,8), %rax
adc $0, %r9
imul u0inv, %rbx C next q limb
jmp L(e1)
ALIGNx
L(tp1): mul q0
add %rbp, -24(up,i,8)
mov %rax, %rbp
mov (mp,i,8), %rax
adc %r9, %r11
mov %rdx, %r9
adc $0, %r10
mul q0
add %r11, -16(up,i,8)
mov %rax, %r11
mov 8(mp,i,8), %rax
adc %r10, %rbp
mov %rdx, %r10
adc $0, %r9
mul q0
add %rbp, -8(up,i,8)
mov %rax, %rbp
adc %r9, %r11
mov 16(mp,i,8), %rax
adc $0, %r10
mov %rdx, %r9
mul q0
add %r11, (up,i,8)
mov %rax, %r11
adc %r10, %rbp
mov 24(mp,i,8), %rax
adc $0, %r9
L(e1): add $4, i
mov %rdx, %r10
js L(tp1)
L(ed1): mul q0
add %rbp, I(-24(up),-24(up,i,8))
adc %r9, %r11
adc $0, %r10
add %r11, I(-16(up),-16(up,i,8))
adc %r10, %rax
adc $0, %rdx
add %rax, I(-8(up),-8(up,i,8))
adc $0, %rdx
mov %rdx, (up,n,8) C up[0]
mov %rbx, q0 C previously computed q limb -> q0
lea 8(up), up C up++
dec j
jnz L(otp1)
jmp L(cj)
L(b3): cmp $-3, R32(n)
jz L(n3)
L(otp3):lea 3(n), i
mov (mp,n,8), %rax
mul q0
mov %rax, %rbp
mov 8(mp,n,8), %rax
mov %rdx, %r9
mul q0
mov %rax, %rbx
mov 16(mp,n,8), %rax
mov %rdx, %r10
mul q0
add (up,n,8), %rbp
mov %rax, %rbp
mov 24(mp,n,8), %rax
adc %r9, %rbx
mov %rdx, %r9
adc $0, %r10
mul q0
add 8(up,n,8), %rbx
mov %rbx, 8(up,n,8)
mov %rax, %r11
mov 32(mp,n,8), %rax
adc %r10, %rbp
mov %rdx, %r10
adc $0, %r9
imul u0inv, %rbx C next q limb
jmp L(e3)
ALIGNx
L(tp3): mul q0
add %rbp, -24(up,i,8)
mov %rax, %rbp
mov (mp,i,8), %rax
adc %r9, %r11
mov %rdx, %r9
adc $0, %r10
mul q0
add %r11, -16(up,i,8)
mov %rax, %r11
mov 8(mp,i,8), %rax
adc %r10, %rbp
mov %rdx, %r10
adc $0, %r9
L(e3): mul q0
add %rbp, -8(up,i,8)
mov %rax, %rbp
adc %r9, %r11
mov 16(mp,i,8), %rax
adc $0, %r10
mov %rdx, %r9
mul q0
add %r11, (up,i,8)
mov %rax, %r11
adc %r10, %rbp
mov 24(mp,i,8), %rax
adc $0, %r9
add $4, i
mov %rdx, %r10
js L(tp3)
L(ed3): mul q0
add %rbp, I(-24(up),-24(up,i,8))
adc %r9, %r11
adc $0, %r10
add %r11, I(-16(up),-16(up,i,8))
adc %r10, %rax
adc $0, %rdx
add %rax, I(-8(up),-8(up,i,8))
adc $0, %rdx
mov %rdx, (up,n,8) C up[0]
mov %rbx, q0 C previously computed q limb -> q0
lea 8(up), up C up++
dec j
jnz L(otp3)
C jmp L(cj)
L(cj):
IFSTD(` lea (up,n,8), up C param 2: up
lea (up,n,8), %rdx C param 3: up - n
neg R32(n) ') C param 4: n
IFDOS(` lea (up,n,8), %rdx C param 2: up
lea (%rdx,n,8), %r8 C param 3: up - n
neg R32(n)
mov n, %r9 C param 4: n
mov rp, %rcx ') C param 1: rp
IFSTD(` sub $8, %rsp ')
IFDOS(` sub $40, %rsp ')
ASSERT(nz, `test $15, %rsp')
CALL( mpn_add_n)
IFSTD(` add $8, %rsp ')
IFDOS(` add $40, %rsp ')
L(ret): pop %r15
pop %r14
pop %r13
pop %r12
pop %rbp
pop %rbx
FUNC_EXIT()
ret
L(bx0): test $2, R8(n)
jnz L(b2)
L(b0): cmp $-4, R32(n)
jz L(n4)
L(otp0):lea 4(n), i
mov (mp,n,8), %rax
mul q0
mov %rax, %r11
mov 8(mp,n,8), %rax
mov %rdx, %r10
mul q0
mov %rax, %rbx
mov 16(mp,n,8), %rax
mov %rdx, %r9
mul q0
add (up,n,8), %r11
mov %rax, %r11
adc %r10, %rbx
mov 24(mp,n,8), %rax
adc $0, %r9
mov %rdx, %r10
mul q0
add 8(up,n,8), %rbx
mov %rbx, 8(up,n,8)
mov %rax, %rbp
mov 32(mp,n,8), %rax
adc %r9, %r11
mov %rdx, %r9
adc $0, %r10
imul u0inv, %rbx C next q limb
jmp L(e0)
ALIGNx
L(tp0): mul q0
add %rbp, -24(up,i,8)
mov %rax, %rbp
mov (mp,i,8), %rax
adc %r9, %r11
mov %rdx, %r9
adc $0, %r10
L(e0): mul q0
add %r11, -16(up,i,8)
mov %rax, %r11
mov 8(mp,i,8), %rax
adc %r10, %rbp
mov %rdx, %r10
adc $0, %r9
mul q0
add %rbp, -8(up,i,8)
mov %rax, %rbp
adc %r9, %r11
mov 16(mp,i,8), %rax
adc $0, %r10
mov %rdx, %r9
mul q0
add %r11, (up,i,8)
mov %rax, %r11
adc %r10, %rbp
mov 24(mp,i,8), %rax
adc $0, %r9
add $4, i
mov %rdx, %r10
js L(tp0)
L(ed0): mul q0
add %rbp, I(-24(up),-24(up,i,8))
adc %r9, %r11
adc $0, %r10
add %r11, I(-16(up),-16(up,i,8))
adc %r10, %rax
adc $0, %rdx
add %rax, I(-8(up),-8(up,i,8))
adc $0, %rdx
mov %rdx, (up,n,8) C up[0]
mov %rbx, q0 C previously computed q limb -> q0
lea 8(up), up C up++
dec j
jnz L(otp0)
jmp L(cj)
L(b2): cmp $-2, R32(n)
jz L(n2)
L(otp2):lea 2(n), i
mov (mp,n,8), %rax
mul q0
mov %rax, %r11
mov 8(mp,n,8), %rax
mov %rdx, %r10
mul q0
mov %rax, %rbx
mov 16(mp,n,8), %rax
mov %rdx, %r9
mul q0
add (up,n,8), %r11
mov %rax, %r11
adc %r10, %rbx
mov 24(mp,n,8), %rax
adc $0, %r9
mov %rdx, %r10
mul q0
add 8(up,n,8), %rbx
mov %rbx, 8(up,n,8)
mov %rax, %rbp
mov 32(mp,n,8), %rax
adc %r9, %r11
mov %rdx, %r9
adc $0, %r10
imul u0inv, %rbx C next q limb
jmp L(e2)
ALIGNx
L(tp2): mul q0
add %rbp, -24(up,i,8)
mov %rax, %rbp
mov (mp,i,8), %rax
adc %r9, %r11
mov %rdx, %r9
adc $0, %r10
mul q0
add %r11, -16(up,i,8)
mov %rax, %r11
mov 8(mp,i,8), %rax
adc %r10, %rbp
mov %rdx, %r10
adc $0, %r9
mul q0
add %rbp, -8(up,i,8)
mov %rax, %rbp
adc %r9, %r11
mov 16(mp,i,8), %rax
adc $0, %r10
mov %rdx, %r9
L(e2): mul q0
add %r11, (up,i,8)
mov %rax, %r11
adc %r10, %rbp
mov 24(mp,i,8), %rax
adc $0, %r9
add $4, i
mov %rdx, %r10
js L(tp2)
L(ed2): mul q0
add %rbp, I(-24(up),-24(up,i,8))
adc %r9, %r11
adc $0, %r10
add %r11, I(-16(up),-16(up,i,8))
adc %r10, %rax
adc $0, %rdx
add %rax, I(-8(up),-8(up,i,8))
adc $0, %rdx
mov %rdx, (up,n,8) C up[0]
mov %rbx, q0 C previously computed q limb -> q0
lea 8(up), up C up++
dec j
jnz L(otp2)
jmp L(cj)
L(n1): mov (mp_param), %rax
mul q0
add -8(up), %rax
adc (up), %rdx
mov %rdx, (rp)
mov $0, R32(%rax)
adc R32(%rax), R32(%rax)
jmp L(ret)
L(n2): mov (mp_param), %rax
mov -16(up), %rbp
mul q0
add %rax, %rbp
mov %rdx, %r9
adc $0, %r9
mov -8(mp), %rax
mov -8(up), %r10
mul q0
add %rax, %r10
mov %rdx, %r11
adc $0, %r11
add %r9, %r10
adc $0, %r11
mov %r10, q0
imul u0inv, q0 C next q0
mov -16(mp), %rax
mul q0
add %rax, %r10
mov %rdx, %r9
adc $0, %r9
mov -8(mp), %rax
mov (up), %r14
mul q0
add %rax, %r14
adc $0, %rdx
add %r9, %r14
adc $0, %rdx
xor R32(%rax), R32(%rax)
add %r11, %r14
adc 8(up), %rdx
mov %r14, (rp)
mov %rdx, 8(rp)
adc R32(%rax), R32(%rax)
jmp L(ret)
ALIGNx
L(n3): mov -24(mp), %rax
mov -24(up), %r10
mul q0
add %rax, %r10
mov -16(mp), %rax
mov %rdx, %r11
adc $0, %r11
mov -16(up), %rbp
mul q0
add %rax, %rbp
mov %rdx, %r9
adc $0, %r9
mov -8(mp), %rax
add %r11, %rbp
mov -8(up), %r10
adc $0, %r9
mul q0
mov %rbp, q0
imul u0inv, q0 C next q0
add %rax, %r10
mov %rdx, %r11
adc $0, %r11
mov %rbp, -16(up)
add %r9, %r10
adc $0, %r11
mov %r10, -8(up)
mov %r11, -24(up) C up[0]
lea 8(up), up C up++
dec j
jnz L(n3)
mov -48(up), %rdx
mov -40(up), %rbx
xor R32(%rax), R32(%rax)
add %rbp, %rdx
adc %r10, %rbx
adc -8(up), %r11
mov %rdx, (rp)
mov %rbx, 8(rp)
mov %r11, 16(rp)
adc R32(%rax), R32(%rax)
jmp L(ret)
L(n4): mov -32(mp), %rax
mul q0
mov %rax, %r11
mov -24(mp), %rax
mov %rdx, %r10
mul q0
mov %rax, %rbx
mov -16(mp), %rax
mov %rdx, %r9
mul q0
add -32(up), %r11
mov %rax, %r11
adc %r10, %rbx
mov -8(mp), %rax
adc $0, %r9
mov %rdx, %r10
mul q0
add -24(up), %rbx
mov %rbx, -24(up)
adc %r9, %r11
adc $0, %r10
imul u0inv, %rbx C next q limb
add %r11, -16(up)
adc %r10, %rax
adc $0, %rdx
add %rax, -8(up)
adc $0, %rdx
mov %rdx, -32(up) C up[0]
mov %rbx, q0 C previously computed q limb -> q0
dec j
lea 8(up), up C up++
jnz L(n4)
jmp L(cj)
EPILOGUE()
ASM_END()
|
