diff options
Diffstat (limited to 'REORG.TODO/sysdeps/x86_64/fpu/multiarch/svml_s_sinf4_core_sse4.S')
| -rw-r--r-- | REORG.TODO/sysdeps/x86_64/fpu/multiarch/svml_s_sinf4_core_sse4.S | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/x86_64/fpu/multiarch/svml_s_sinf4_core_sse4.S b/REORG.TODO/sysdeps/x86_64/fpu/multiarch/svml_s_sinf4_core_sse4.S new file mode 100644 index 0000000000..c690150964 --- /dev/null +++ b/REORG.TODO/sysdeps/x86_64/fpu/multiarch/svml_s_sinf4_core_sse4.S @@ -0,0 +1,224 @@ +/* Function sinf 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_trig_data.h" + + .text +ENTRY(_ZGVbN4v_sinf_sse4) +/* + ALGORITHM DESCRIPTION: + + 1) Range reduction to [-Pi/2; +Pi/2] interval + a) Grab sign from source argument and save it. + b) Remove sign using AND operation + c) Getting octant Y by 1/Pi multiplication + d) Add "Right Shifter" value + e) Treat obtained value as integer for destination sign setting. + Shift first bit of this value to the last (sign) position + f) Change destination sign if source sign is negative + using XOR operation. + g) Subtract "Right Shifter" value + h) Subtract Y*PI from X argument, where PI divided to 4 parts: + X = X - Y*PI1 - Y*PI2 - Y*PI3 - Y*PI4; + 2) Polynomial (minimax for sin within [-Pi/2; +Pi/2] interval) + a) Calculate X^2 = X * X + b) Calculate polynomial: + R = X + X * X^2 * (A3 + x^2 * (A5 + ...... + 3) Destination sign setting + a) Set shifted destination sign using XOR operation: + R = XOR( R, S ); + */ + 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 + movaps %xmm0, %xmm5 + movq __svml_s_trig_data@GOTPCREL(%rip), %rax + movups __sAbsMask(%rax), %xmm2 + +/* b) Remove sign using AND operation */ + movaps %xmm2, %xmm4 + +/* + f) Change destination sign if source sign is negative + using XOR operation. + */ + andnps %xmm5, %xmm2 + movups __sInvPI(%rax), %xmm1 + andps %xmm5, %xmm4 + +/* c) Getting octant Y by 1/Pi multiplication + d) Add "Right Shifter" value */ + mulps %xmm4, %xmm1 + +/* h) Subtract Y*PI from X argument, where PI divided to 4 parts: + X = X - Y*PI1 - Y*PI2 - Y*PI3 - Y*PI4 */ + movaps %xmm4, %xmm0 + +/* Check for large and special values */ + cmpnleps __sRangeReductionVal(%rax), %xmm4 + movups __sRShifter(%rax), %xmm6 + movups __sPI1(%rax), %xmm7 + addps %xmm6, %xmm1 + movmskps %xmm4, %ecx + +/* e) Treat obtained value as integer for destination sign setting. + Shift first bit of this value to the last (sign) position */ + movaps %xmm1, %xmm3 + +/* g) Subtract "Right Shifter" value */ + subps %xmm6, %xmm1 + mulps %xmm1, %xmm7 + pslld $31, %xmm3 + movups __sPI2(%rax), %xmm6 + subps %xmm7, %xmm0 + mulps %xmm1, %xmm6 + movups __sPI3(%rax), %xmm7 + subps %xmm6, %xmm0 + mulps %xmm1, %xmm7 + movups __sPI4(%rax), %xmm6 + subps %xmm7, %xmm0 + mulps %xmm6, %xmm1 + subps %xmm1, %xmm0 + +/* 2) Polynomial (minimax for sin within [-Pi/2; +Pi/2] interval) + a) Calculate X^2 = X * X + b) Calculate polynomial: + R = X + X * X^2 * (A3 + x^2 * (A5 + ...... */ + movaps %xmm0, %xmm1 + mulps %xmm0, %xmm1 + xorps %xmm3, %xmm0 + movups __sA9(%rax), %xmm3 + mulps %xmm1, %xmm3 + addps __sA7(%rax), %xmm3 + mulps %xmm1, %xmm3 + addps __sA5(%rax), %xmm3 + mulps %xmm1, %xmm3 + addps __sA3(%rax), %xmm3 + mulps %xmm3, %xmm1 + mulps %xmm0, %xmm1 + addps %xmm1, %xmm0 + +/* 3) Destination sign setting + a) Set shifted destination sign using XOR operation: + R = XOR( R, S ); */ + xorps %xmm2, %xmm0 + 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 + movups %xmm5, 192(%rsp) + movups %xmm0, 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), %xmm0 + jmp .LBL_1_2 + +.LBL_1_10: + cfi_restore_state + movzbl %r12b, %r15d + movss 196(%rsp,%r15,8), %xmm0 + + call JUMPTARGET(sinf) + + movss %xmm0, 260(%rsp,%r15,8) + jmp .LBL_1_8 + +.LBL_1_12: + movzbl %r12b, %r15d + movss 192(%rsp,%r15,8), %xmm0 + + call JUMPTARGET(sinf) + + movss %xmm0, 256(%rsp,%r15,8) + jmp .LBL_1_7 + +END(_ZGVbN4v_sinf_sse4) |