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author | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
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committer | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
commit | 5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch) | |
tree | 4470480d904b65cf14ca524f96f79eca818c3eaf /sysdeps/x86_64/fpu/multiarch/svml_s_logf4_core_sse4.S | |
parent | 199fc19d3aaaf57944ef036e15904febe877fc93 (diff) | |
download | glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.tar.gz glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.tar.xz glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.zip |
Prepare for radical source tree reorganization. zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage directory, REORG.TODO, except for files that will certainly still exist in their current form at top level when we're done (COPYING, COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which are moved to the new directory OldChangeLogs, instead), and the generated file INSTALL (which is just deleted; in the new order, there will be no generated files checked into version control).
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) |