528f9ff6bf
The minimum GNU binutils requirement is 2.25 which supports AVX512DQ. Remove assembler AVX512DQ check.
404 lines
12 KiB
ArmAsm
404 lines
12 KiB
ArmAsm
/* Function logf vectorized with AVX-512. KNL and SKX versions.
|
|
Copyright (C) 2014-2021 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <sysdep.h>
|
|
#include "svml_s_logf_data.h"
|
|
#include "svml_s_wrapper_impl.h"
|
|
|
|
.text
|
|
ENTRY (_ZGVeN16v_logf_knl)
|
|
/*
|
|
ALGORITHM DESCRIPTION:
|
|
|
|
log(x) = exponent_x*log(2) + log(mantissa_x), if mantissa_x<4/3
|
|
log(x) = (exponent_x+1)*log(2) + log(0.5*mantissa_x), if mantissa_x>4/3
|
|
|
|
R = mantissa_x - 1, if mantissa_x<4/3
|
|
R = 0.5*mantissa_x - 1, if mantissa_x>4/3
|
|
|R|< 1/3
|
|
|
|
log(1+R) is approximated as a polynomial: degree 9 for 1-ulp,
|
|
degree 7 for 4-ulp, degree 3 for half-precision. */
|
|
|
|
pushq %rbp
|
|
cfi_adjust_cfa_offset (8)
|
|
cfi_rel_offset (%rbp, 0)
|
|
movq %rsp, %rbp
|
|
cfi_def_cfa_register (%rbp)
|
|
andq $-64, %rsp
|
|
subq $1280, %rsp
|
|
movq __svml_slog_data@GOTPCREL(%rip), %rax
|
|
movl $-1, %ecx
|
|
|
|
/* reduction: compute r,n */
|
|
vpsubd _iBrkValue(%rax), %zmm0, %zmm2
|
|
vmovups _sPoly_7(%rax), %zmm7
|
|
vpandd _iOffExpoMask(%rax), %zmm2, %zmm3
|
|
|
|
/* exponent_x (mantissa_x<4/3) or exponent_x+1 (mantissa_x>4/3) */
|
|
vpsrad $23, %zmm2, %zmm4
|
|
|
|
/* check for working range,
|
|
set special argument mask (denormals/zero/Inf/NaN)
|
|
*/
|
|
vpaddd _iHiDelta(%rax), %zmm0, %zmm1
|
|
|
|
/* mantissa_x (mantissa_x<4/3), or 0.5*mantissa_x (mantissa_x>4/3) */
|
|
vpaddd _iBrkValue(%rax), %zmm3, %zmm6
|
|
vpcmpd $1, _iLoRange(%rax), %zmm1, %k1
|
|
vcvtdq2ps {rn-sae}, %zmm4, %zmm1
|
|
|
|
/* reduced argument R */
|
|
vsubps _sOne(%rax), %zmm6, %zmm8
|
|
vpbroadcastd %ecx, %zmm5{%k1}{z}
|
|
|
|
/* polynomial evaluation starts here */
|
|
vfmadd213ps _sPoly_6(%rax), %zmm8, %zmm7
|
|
vptestmd %zmm5, %zmm5, %k0
|
|
kmovw %k0, %ecx
|
|
vfmadd213ps _sPoly_5(%rax), %zmm8, %zmm7
|
|
vfmadd213ps _sPoly_4(%rax), %zmm8, %zmm7
|
|
vfmadd213ps _sPoly_3(%rax), %zmm8, %zmm7
|
|
vfmadd213ps _sPoly_2(%rax), %zmm8, %zmm7
|
|
vfmadd213ps _sPoly_1(%rax), %zmm8, %zmm7
|
|
vmulps %zmm8, %zmm7, %zmm9
|
|
|
|
/* polynomial evaluation end */
|
|
vfmadd213ps %zmm8, %zmm8, %zmm9
|
|
|
|
/*
|
|
final reconstruction:
|
|
add exponent_value*log2 to polynomial result
|
|
*/
|
|
vfmadd132ps _sLn2(%rax), %zmm9, %zmm1
|
|
testl %ecx, %ecx
|
|
jne .LBL_1_3
|
|
|
|
.LBL_1_2:
|
|
cfi_remember_state
|
|
vmovaps %zmm1, %zmm0
|
|
movq %rbp, %rsp
|
|
cfi_def_cfa_register (%rsp)
|
|
popq %rbp
|
|
cfi_adjust_cfa_offset (-8)
|
|
cfi_restore (%rbp)
|
|
ret
|
|
|
|
.LBL_1_3:
|
|
cfi_restore_state
|
|
vmovups %zmm0, 1152(%rsp)
|
|
vmovups %zmm1, 1216(%rsp)
|
|
je .LBL_1_2
|
|
|
|
xorb %dl, %dl
|
|
kmovw %k4, 1048(%rsp)
|
|
xorl %eax, %eax
|
|
kmovw %k5, 1040(%rsp)
|
|
kmovw %k6, 1032(%rsp)
|
|
kmovw %k7, 1024(%rsp)
|
|
vmovups %zmm16, 960(%rsp)
|
|
vmovups %zmm17, 896(%rsp)
|
|
vmovups %zmm18, 832(%rsp)
|
|
vmovups %zmm19, 768(%rsp)
|
|
vmovups %zmm20, 704(%rsp)
|
|
vmovups %zmm21, 640(%rsp)
|
|
vmovups %zmm22, 576(%rsp)
|
|
vmovups %zmm23, 512(%rsp)
|
|
vmovups %zmm24, 448(%rsp)
|
|
vmovups %zmm25, 384(%rsp)
|
|
vmovups %zmm26, 320(%rsp)
|
|
vmovups %zmm27, 256(%rsp)
|
|
vmovups %zmm28, 192(%rsp)
|
|
vmovups %zmm29, 128(%rsp)
|
|
vmovups %zmm30, 64(%rsp)
|
|
vmovups %zmm31, (%rsp)
|
|
movq %rsi, 1064(%rsp)
|
|
movq %rdi, 1056(%rsp)
|
|
movq %r12, 1096(%rsp)
|
|
cfi_offset_rel_rsp (12, 1096)
|
|
movb %dl, %r12b
|
|
movq %r13, 1088(%rsp)
|
|
cfi_offset_rel_rsp (13, 1088)
|
|
movl %ecx, %r13d
|
|
movq %r14, 1080(%rsp)
|
|
cfi_offset_rel_rsp (14, 1080)
|
|
movl %eax, %r14d
|
|
movq %r15, 1072(%rsp)
|
|
cfi_offset_rel_rsp (15, 1072)
|
|
cfi_remember_state
|
|
|
|
.LBL_1_6:
|
|
btl %r14d, %r13d
|
|
jc .LBL_1_12
|
|
|
|
.LBL_1_7:
|
|
lea 1(%r14), %esi
|
|
btl %esi, %r13d
|
|
jc .LBL_1_10
|
|
|
|
.LBL_1_8:
|
|
addb $1, %r12b
|
|
addl $2, %r14d
|
|
cmpb $16, %r12b
|
|
jb .LBL_1_6
|
|
|
|
kmovw 1048(%rsp), %k4
|
|
movq 1064(%rsp), %rsi
|
|
kmovw 1040(%rsp), %k5
|
|
movq 1056(%rsp), %rdi
|
|
kmovw 1032(%rsp), %k6
|
|
movq 1096(%rsp), %r12
|
|
cfi_restore (%r12)
|
|
movq 1088(%rsp), %r13
|
|
cfi_restore (%r13)
|
|
kmovw 1024(%rsp), %k7
|
|
vmovups 960(%rsp), %zmm16
|
|
vmovups 896(%rsp), %zmm17
|
|
vmovups 832(%rsp), %zmm18
|
|
vmovups 768(%rsp), %zmm19
|
|
vmovups 704(%rsp), %zmm20
|
|
vmovups 640(%rsp), %zmm21
|
|
vmovups 576(%rsp), %zmm22
|
|
vmovups 512(%rsp), %zmm23
|
|
vmovups 448(%rsp), %zmm24
|
|
vmovups 384(%rsp), %zmm25
|
|
vmovups 320(%rsp), %zmm26
|
|
vmovups 256(%rsp), %zmm27
|
|
vmovups 192(%rsp), %zmm28
|
|
vmovups 128(%rsp), %zmm29
|
|
vmovups 64(%rsp), %zmm30
|
|
vmovups (%rsp), %zmm31
|
|
movq 1080(%rsp), %r14
|
|
cfi_restore (%r14)
|
|
movq 1072(%rsp), %r15
|
|
cfi_restore (%r15)
|
|
vmovups 1216(%rsp), %zmm1
|
|
jmp .LBL_1_2
|
|
|
|
.LBL_1_10:
|
|
cfi_restore_state
|
|
movzbl %r12b, %r15d
|
|
vmovss 1156(%rsp,%r15,8), %xmm0
|
|
call JUMPTARGET(logf)
|
|
vmovss %xmm0, 1220(%rsp,%r15,8)
|
|
jmp .LBL_1_8
|
|
|
|
.LBL_1_12:
|
|
movzbl %r12b, %r15d
|
|
vmovss 1152(%rsp,%r15,8), %xmm0
|
|
call JUMPTARGET(logf)
|
|
vmovss %xmm0, 1216(%rsp,%r15,8)
|
|
jmp .LBL_1_7
|
|
END (_ZGVeN16v_logf_knl)
|
|
|
|
ENTRY (_ZGVeN16v_logf_skx)
|
|
/*
|
|
ALGORITHM DESCRIPTION:
|
|
|
|
log(x) = exponent_x*log(2) + log(mantissa_x), if mantissa_x<4/3
|
|
log(x) = (exponent_x+1)*log(2) + log(0.5*mantissa_x), if mantissa_x>4/3
|
|
|
|
R = mantissa_x - 1, if mantissa_x<4/3
|
|
R = 0.5*mantissa_x - 1, if mantissa_x>4/3
|
|
|R|< 1/3
|
|
|
|
log(1+R) is approximated as a polynomial: degree 9 for 1-ulp,
|
|
degree 7 for 4-ulp, degree 3 for half-precision. */
|
|
|
|
pushq %rbp
|
|
cfi_adjust_cfa_offset (8)
|
|
cfi_rel_offset (%rbp, 0)
|
|
movq %rsp, %rbp
|
|
cfi_def_cfa_register (%rbp)
|
|
andq $-64, %rsp
|
|
subq $1280, %rsp
|
|
movq __svml_slog_data@GOTPCREL(%rip), %rax
|
|
vpternlogd $0xff, %zmm6, %zmm6, %zmm6
|
|
vmovups _iBrkValue(%rax), %zmm4
|
|
vmovups _sPoly_7(%rax), %zmm8
|
|
|
|
/*
|
|
check for working range,
|
|
set special argument mask (denormals/zero/Inf/NaN)
|
|
*/
|
|
vpaddd _iHiDelta(%rax), %zmm0, %zmm1
|
|
|
|
/* reduction: compute r,n */
|
|
vpsubd %zmm4, %zmm0, %zmm2
|
|
vpcmpd $5, _iLoRange(%rax), %zmm1, %k1
|
|
|
|
/* exponent_x (mantissa_x<4/3) or exponent_x+1 (mantissa_x>4/3) */
|
|
vpsrad $23, %zmm2, %zmm5
|
|
vpandd _iOffExpoMask(%rax), %zmm2, %zmm3
|
|
|
|
/* mantissa_x (mantissa_x<4/3), or 0.5*mantissa_x (mantissa_x>4/3) */
|
|
vpaddd %zmm4, %zmm3, %zmm7
|
|
|
|
/* reduced argument R */
|
|
vsubps _sOne(%rax), %zmm7, %zmm9
|
|
|
|
/* polynomial evaluation starts here */
|
|
vfmadd213ps _sPoly_6(%rax), %zmm9, %zmm8
|
|
vfmadd213ps _sPoly_5(%rax), %zmm9, %zmm8
|
|
vfmadd213ps _sPoly_4(%rax), %zmm9, %zmm8
|
|
vfmadd213ps _sPoly_3(%rax), %zmm9, %zmm8
|
|
vfmadd213ps _sPoly_2(%rax), %zmm9, %zmm8
|
|
vfmadd213ps _sPoly_1(%rax), %zmm9, %zmm8
|
|
vmulps %zmm9, %zmm8, %zmm10
|
|
|
|
/* polynomial evaluation end */
|
|
vfmadd213ps %zmm9, %zmm9, %zmm10
|
|
vpandnd %zmm1, %zmm1, %zmm6{%k1}
|
|
vptestmd %zmm6, %zmm6, %k0
|
|
vcvtdq2ps {rn-sae}, %zmm5, %zmm1
|
|
kmovw %k0, %ecx
|
|
|
|
/*
|
|
final reconstruction:
|
|
add exponent_value*log2 to polynomial result
|
|
*/
|
|
vfmadd132ps _sLn2(%rax), %zmm10, %zmm1
|
|
testl %ecx, %ecx
|
|
jne .LBL_2_3
|
|
|
|
.LBL_2_2:
|
|
cfi_remember_state
|
|
vmovaps %zmm1, %zmm0
|
|
movq %rbp, %rsp
|
|
cfi_def_cfa_register (%rsp)
|
|
popq %rbp
|
|
cfi_adjust_cfa_offset (-8)
|
|
cfi_restore (%rbp)
|
|
ret
|
|
|
|
.LBL_2_3:
|
|
cfi_restore_state
|
|
vmovups %zmm0, 1152(%rsp)
|
|
vmovups %zmm1, 1216(%rsp)
|
|
je .LBL_2_2
|
|
|
|
xorb %dl, %dl
|
|
xorl %eax, %eax
|
|
kmovw %k4, 1048(%rsp)
|
|
kmovw %k5, 1040(%rsp)
|
|
kmovw %k6, 1032(%rsp)
|
|
kmovw %k7, 1024(%rsp)
|
|
vmovups %zmm16, 960(%rsp)
|
|
vmovups %zmm17, 896(%rsp)
|
|
vmovups %zmm18, 832(%rsp)
|
|
vmovups %zmm19, 768(%rsp)
|
|
vmovups %zmm20, 704(%rsp)
|
|
vmovups %zmm21, 640(%rsp)
|
|
vmovups %zmm22, 576(%rsp)
|
|
vmovups %zmm23, 512(%rsp)
|
|
vmovups %zmm24, 448(%rsp)
|
|
vmovups %zmm25, 384(%rsp)
|
|
vmovups %zmm26, 320(%rsp)
|
|
vmovups %zmm27, 256(%rsp)
|
|
vmovups %zmm28, 192(%rsp)
|
|
vmovups %zmm29, 128(%rsp)
|
|
vmovups %zmm30, 64(%rsp)
|
|
vmovups %zmm31, (%rsp)
|
|
movq %rsi, 1064(%rsp)
|
|
movq %rdi, 1056(%rsp)
|
|
movq %r12, 1096(%rsp)
|
|
cfi_offset_rel_rsp (12, 1096)
|
|
movb %dl, %r12b
|
|
movq %r13, 1088(%rsp)
|
|
cfi_offset_rel_rsp (13, 1088)
|
|
movl %ecx, %r13d
|
|
movq %r14, 1080(%rsp)
|
|
cfi_offset_rel_rsp (14, 1080)
|
|
movl %eax, %r14d
|
|
movq %r15, 1072(%rsp)
|
|
cfi_offset_rel_rsp (15, 1072)
|
|
cfi_remember_state
|
|
|
|
.LBL_2_6:
|
|
btl %r14d, %r13d
|
|
jc .LBL_2_12
|
|
|
|
.LBL_2_7:
|
|
lea 1(%r14), %esi
|
|
btl %esi, %r13d
|
|
jc .LBL_2_10
|
|
|
|
.LBL_2_8:
|
|
incb %r12b
|
|
addl $2, %r14d
|
|
cmpb $16, %r12b
|
|
jb .LBL_2_6
|
|
|
|
kmovw 1048(%rsp), %k4
|
|
kmovw 1040(%rsp), %k5
|
|
kmovw 1032(%rsp), %k6
|
|
kmovw 1024(%rsp), %k7
|
|
vmovups 960(%rsp), %zmm16
|
|
vmovups 896(%rsp), %zmm17
|
|
vmovups 832(%rsp), %zmm18
|
|
vmovups 768(%rsp), %zmm19
|
|
vmovups 704(%rsp), %zmm20
|
|
vmovups 640(%rsp), %zmm21
|
|
vmovups 576(%rsp), %zmm22
|
|
vmovups 512(%rsp), %zmm23
|
|
vmovups 448(%rsp), %zmm24
|
|
vmovups 384(%rsp), %zmm25
|
|
vmovups 320(%rsp), %zmm26
|
|
vmovups 256(%rsp), %zmm27
|
|
vmovups 192(%rsp), %zmm28
|
|
vmovups 128(%rsp), %zmm29
|
|
vmovups 64(%rsp), %zmm30
|
|
vmovups (%rsp), %zmm31
|
|
vmovups 1216(%rsp), %zmm1
|
|
movq 1064(%rsp), %rsi
|
|
movq 1056(%rsp), %rdi
|
|
movq 1096(%rsp), %r12
|
|
cfi_restore (%r12)
|
|
movq 1088(%rsp), %r13
|
|
cfi_restore (%r13)
|
|
movq 1080(%rsp), %r14
|
|
cfi_restore (%r14)
|
|
movq 1072(%rsp), %r15
|
|
cfi_restore (%r15)
|
|
jmp .LBL_2_2
|
|
|
|
.LBL_2_10:
|
|
cfi_restore_state
|
|
movzbl %r12b, %r15d
|
|
vmovss 1156(%rsp,%r15,8), %xmm0
|
|
vzeroupper
|
|
vmovss 1156(%rsp,%r15,8), %xmm0
|
|
|
|
call JUMPTARGET(logf)
|
|
|
|
vmovss %xmm0, 1220(%rsp,%r15,8)
|
|
jmp .LBL_2_8
|
|
|
|
.LBL_2_12:
|
|
movzbl %r12b, %r15d
|
|
vmovss 1152(%rsp,%r15,8), %xmm0
|
|
vzeroupper
|
|
vmovss 1152(%rsp,%r15,8), %xmm0
|
|
|
|
call JUMPTARGET(logf)
|
|
|
|
vmovss %xmm0, 1216(%rsp,%r15,8)
|
|
jmp .LBL_2_7
|
|
|
|
END (_ZGVeN16v_logf_skx)
|