diff options
Diffstat (limited to 'sysdeps/x86_64/fpu/multiarch/svml_s_logf4_core_sse4.S')
| -rw-r--r-- | sysdeps/x86_64/fpu/multiarch/svml_s_logf4_core_sse4.S | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/sysdeps/x86_64/fpu/multiarch/svml_s_logf4_core_sse4.S b/sysdeps/x86_64/fpu/multiarch/svml_s_logf4_core_sse4.S deleted file mode 100644 index 156face181..0000000000 --- a/sysdeps/x86_64/fpu/multiarch/svml_s_logf4_core_sse4.S +++ /dev/null @@ -1,194 +0,0 @@ -/* Function logf vectorized with SSE4. - 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 (_ZGVbN4v_logf_sse4) -/* - 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 $320, %rsp - -/* reduction: compute r,n */ - movaps %xmm0, %xmm2 - -/* check for working range, - set special argument mask (denormals/zero/Inf/NaN) */ - movq __svml_slog_data@GOTPCREL(%rip), %rax - movdqu _iHiDelta(%rax), %xmm1 - movdqu _iLoRange(%rax), %xmm4 - paddd %xmm0, %xmm1 - movdqu _iBrkValue(%rax), %xmm3 - pcmpgtd %xmm1, %xmm4 - movdqu _iOffExpoMask(%rax), %xmm1 - psubd %xmm3, %xmm2 - pand %xmm2, %xmm1 - -/* exponent_x (mantissa_x<4/3) or exponent_x+1 (mantissa_x>4/3) */ - psrad $23, %xmm2 - paddd %xmm3, %xmm1 - movups _sPoly_7(%rax), %xmm5 - -/* mantissa_x (mantissa_x<4/3), or 0.5*mantissa_x (mantissa_x>4/3) */ - cvtdq2ps %xmm2, %xmm6 - -/* reduced argument R */ - subps _sOne(%rax), %xmm1 - movmskps %xmm4, %ecx - -/* final reconstruction: - add exponent_value*log2 to polynomial result */ - mulps _sLn2(%rax), %xmm6 - -/* polynomial evaluation starts here */ - mulps %xmm1, %xmm5 - addps _sPoly_6(%rax), %xmm5 - mulps %xmm1, %xmm5 - addps _sPoly_5(%rax), %xmm5 - mulps %xmm1, %xmm5 - addps _sPoly_4(%rax), %xmm5 - mulps %xmm1, %xmm5 - addps _sPoly_3(%rax), %xmm5 - mulps %xmm1, %xmm5 - addps _sPoly_2(%rax), %xmm5 - mulps %xmm1, %xmm5 - addps _sPoly_1(%rax), %xmm5 - mulps %xmm1, %xmm5 - -/* polynomial evaluation end */ - mulps %xmm1, %xmm5 - addps %xmm5, %xmm1 - addps %xmm6, %xmm1 - testl %ecx, %ecx - jne .LBL_1_3 - -.LBL_1_2: - cfi_remember_state - movdqa %xmm1, %xmm0 - 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 - movups %xmm0, 192(%rsp) - movups %xmm1, 256(%rsp) - je .LBL_1_2 - - xorb %dl, %dl - xorl %eax, %eax - movups %xmm8, 112(%rsp) - movups %xmm9, 96(%rsp) - movups %xmm10, 80(%rsp) - movups %xmm11, 64(%rsp) - movups %xmm12, 48(%rsp) - movups %xmm13, 32(%rsp) - movups %xmm14, 16(%rsp) - movups %xmm15, (%rsp) - movq %rsi, 136(%rsp) - movq %rdi, 128(%rsp) - movq %r12, 168(%rsp) - cfi_offset_rel_rsp (12, 168) - movb %dl, %r12b - movq %r13, 160(%rsp) - cfi_offset_rel_rsp (13, 160) - movl %ecx, %r13d - movq %r14, 152(%rsp) - cfi_offset_rel_rsp (14, 152) - movl %eax, %r14d - movq %r15, 144(%rsp) - cfi_offset_rel_rsp (15, 144) - 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 - - movups 112(%rsp), %xmm8 - movups 96(%rsp), %xmm9 - movups 80(%rsp), %xmm10 - movups 64(%rsp), %xmm11 - movups 48(%rsp), %xmm12 - movups 32(%rsp), %xmm13 - movups 16(%rsp), %xmm14 - movups (%rsp), %xmm15 - movq 136(%rsp), %rsi - movq 128(%rsp), %rdi - movq 168(%rsp), %r12 - cfi_restore (%r12) - movq 160(%rsp), %r13 - cfi_restore (%r13) - movq 152(%rsp), %r14 - cfi_restore (%r14) - movq 144(%rsp), %r15 - cfi_restore (%r15) - movups 256(%rsp), %xmm1 - jmp .LBL_1_2 - -.LBL_1_10: - cfi_restore_state - movzbl %r12b, %r15d - movss 196(%rsp,%r15,8), %xmm0 - - call JUMPTARGET(__logf_finite) - - movss %xmm0, 260(%rsp,%r15,8) - jmp .LBL_1_8 - -.LBL_1_12: - movzbl %r12b, %r15d - movss 192(%rsp,%r15,8), %xmm0 - - call JUMPTARGET(__logf_finite) - - movss %xmm0, 256(%rsp,%r15,8) - jmp .LBL_1_7 - -END (_ZGVbN4v_logf_sse4) |