diff options
Diffstat (limited to 'sysdeps/x86_64/fpu/multiarch/svml_s_logf8_core_avx2.S')
| -rw-r--r-- | sysdeps/x86_64/fpu/multiarch/svml_s_logf8_core_avx2.S | 184 |
1 files changed, 0 insertions, 184 deletions
diff --git a/sysdeps/x86_64/fpu/multiarch/svml_s_logf8_core_avx2.S b/sysdeps/x86_64/fpu/multiarch/svml_s_logf8_core_avx2.S deleted file mode 100644 index 994af91ffe..0000000000 --- a/sysdeps/x86_64/fpu/multiarch/svml_s_logf8_core_avx2.S +++ /dev/null @@ -1,184 +0,0 @@ -/* Function logf vectorized with AVX2. - Copyright (C) 2014-2017 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 - <http://www.gnu.org/licenses/>. */ - -#include <sysdep.h> -#include "svml_s_logf_data.h" - - .text -ENTRY(_ZGVdN8v_logf_avx2) -/* - 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 $448, %rsp - movq __svml_slog_data@GOTPCREL(%rip), %rax - vmovaps %ymm0, %ymm2 - vmovups _iBrkValue(%rax), %ymm6 - vmovups _iLoRange(%rax), %ymm1 -/* check for working range, - set special argument mask (denormals/zero/Inf/NaN) */ - vpaddd _iHiDelta(%rax), %ymm2, %ymm7 - -/* reduction: compute r,n */ - vpsubd %ymm6, %ymm2, %ymm4 - -/* exponent_x (mantissa_x<4/3) or exponent_x+1 (mantissa_x>4/3) */ - vpsrad $23, %ymm4, %ymm3 - vpand _iOffExpoMask(%rax), %ymm4, %ymm5 - vmovups _sPoly_7(%rax), %ymm4 - vcvtdq2ps %ymm3, %ymm0 - -/* mantissa_x (mantissa_x<4/3), or 0.5*mantissa_x (mantissa_x>4/3) */ - vpaddd %ymm6, %ymm5, %ymm3 - -/* reduced argument R */ - vsubps _sOne(%rax), %ymm3, %ymm5 - -/* polynomial evaluation starts here */ - vfmadd213ps _sPoly_6(%rax), %ymm5, %ymm4 - vfmadd213ps _sPoly_5(%rax), %ymm5, %ymm4 - vfmadd213ps _sPoly_4(%rax), %ymm5, %ymm4 - vfmadd213ps _sPoly_3(%rax), %ymm5, %ymm4 - vfmadd213ps _sPoly_2(%rax), %ymm5, %ymm4 - vfmadd213ps _sPoly_1(%rax), %ymm5, %ymm4 - vmulps %ymm5, %ymm4, %ymm6 - -/* polynomial evaluation end */ - vfmadd213ps %ymm5, %ymm5, %ymm6 - vpcmpgtd %ymm7, %ymm1, %ymm1 - vmovmskps %ymm1, %ecx - -/* final reconstruction: - add exponent_value*log2 to polynomial result */ - vfmadd132ps _sLn2(%rax), %ymm6, %ymm0 - testl %ecx, %ecx - jne .LBL_1_3 - -.LBL_1_2: - cfi_remember_state - 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 %ymm2, 320(%rsp) - vmovups %ymm0, 384(%rsp) - je .LBL_1_2 - - xorb %dl, %dl - xorl %eax, %eax - vmovups %ymm8, 224(%rsp) - vmovups %ymm9, 192(%rsp) - vmovups %ymm10, 160(%rsp) - vmovups %ymm11, 128(%rsp) - vmovups %ymm12, 96(%rsp) - vmovups %ymm13, 64(%rsp) - vmovups %ymm14, 32(%rsp) - vmovups %ymm15, (%rsp) - movq %rsi, 264(%rsp) - movq %rdi, 256(%rsp) - movq %r12, 296(%rsp) - cfi_offset_rel_rsp (12, 296) - movb %dl, %r12b - movq %r13, 288(%rsp) - cfi_offset_rel_rsp (13, 288) - movl %ecx, %r13d - movq %r14, 280(%rsp) - cfi_offset_rel_rsp (14, 280) - movl %eax, %r14d - movq %r15, 272(%rsp) - cfi_offset_rel_rsp (15, 272) - 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: - incb %r12b - addl $2, %r14d - cmpb $16, %r12b - jb .LBL_1_6 - - vmovups 224(%rsp), %ymm8 - vmovups 192(%rsp), %ymm9 - vmovups 160(%rsp), %ymm10 - vmovups 128(%rsp), %ymm11 - vmovups 96(%rsp), %ymm12 - vmovups 64(%rsp), %ymm13 - vmovups 32(%rsp), %ymm14 - vmovups (%rsp), %ymm15 - vmovups 384(%rsp), %ymm0 - movq 264(%rsp), %rsi - movq 256(%rsp), %rdi - movq 296(%rsp), %r12 - cfi_restore (%r12) - movq 288(%rsp), %r13 - cfi_restore (%r13) - movq 280(%rsp), %r14 - cfi_restore (%r14) - movq 272(%rsp), %r15 - cfi_restore (%r15) - jmp .LBL_1_2 - -.LBL_1_10: - cfi_restore_state - movzbl %r12b, %r15d - vmovss 324(%rsp,%r15,8), %xmm0 - vzeroupper - - call JUMPTARGET(__logf_finite) - - vmovss %xmm0, 388(%rsp,%r15,8) - jmp .LBL_1_8 - -.LBL_1_12: - movzbl %r12b, %r15d - vmovss 320(%rsp,%r15,8), %xmm0 - vzeroupper - - call JUMPTARGET(__logf_finite) - - vmovss %xmm0, 384(%rsp,%r15,8) - jmp .LBL_1_7 - -END(_ZGVdN8v_logf_avx2) |