diff options
Diffstat (limited to 'REORG.TODO/sysdeps/x86_64/fpu/multiarch/svml_d_cos4_core_avx2.S')
| -rw-r--r-- | REORG.TODO/sysdeps/x86_64/fpu/multiarch/svml_d_cos4_core_avx2.S | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/x86_64/fpu/multiarch/svml_d_cos4_core_avx2.S b/REORG.TODO/sysdeps/x86_64/fpu/multiarch/svml_d_cos4_core_avx2.S new file mode 100644 index 0000000000..4b6d09743b --- /dev/null +++ b/REORG.TODO/sysdeps/x86_64/fpu/multiarch/svml_d_cos4_core_avx2.S @@ -0,0 +1,207 @@ +/* Function cos 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_d_trig_data.h" + + .text +ENTRY (_ZGVdN4v_cos_avx2) + +/* ALGORITHM DESCRIPTION: + + ( low accuracy ( < 4ulp ) or enhanced performance + ( half of correct mantissa ) implementation ) + + Argument representation: + arg + Pi/2 = (N*Pi + R) + + Result calculation: + cos(arg) = sin(arg+Pi/2) = sin(N*Pi + R) = (-1)^N * sin(R) + sin(R) is approximated by corresponding polynomial + */ + 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_d_trig_data@GOTPCREL(%rip), %rax + vmovapd %ymm0, %ymm1 + vmovupd __dInvPI(%rax), %ymm4 + vmovupd __dRShifter(%rax), %ymm5 + +/* + ARGUMENT RANGE REDUCTION: + Add Pi/2 to argument: X' = X+Pi/2 + */ + vaddpd __dHalfPI(%rax), %ymm1, %ymm7 + +/* Get absolute argument value: X' = |X'| */ + vandpd __dAbsMask(%rax), %ymm7, %ymm2 + +/* Y = X'*InvPi + RS : right shifter add */ + vfmadd213pd %ymm5, %ymm4, %ymm7 + vmovupd __dC7(%rax), %ymm4 + +/* Check for large arguments path */ + vcmpnle_uqpd __dRangeVal(%rax), %ymm2, %ymm3 + +/* N = Y - RS : right shifter sub */ + vsubpd %ymm5, %ymm7, %ymm6 + vmovupd __dPI1_FMA(%rax), %ymm2 + +/* SignRes = Y<<63 : shift LSB to MSB place for result sign */ + vpsllq $63, %ymm7, %ymm7 + +/* N = N - 0.5 */ + vsubpd __dOneHalf(%rax), %ymm6, %ymm0 + vmovmskpd %ymm3, %ecx + +/* R = X - N*Pi1 */ + vmovapd %ymm1, %ymm3 + vfnmadd231pd %ymm0, %ymm2, %ymm3 + +/* R = R - N*Pi2 */ + vfnmadd231pd __dPI2_FMA(%rax), %ymm0, %ymm3 + +/* R = R - N*Pi3 */ + vfnmadd132pd __dPI3_FMA(%rax), %ymm3, %ymm0 + +/* POLYNOMIAL APPROXIMATION: R2 = R*R */ + vmulpd %ymm0, %ymm0, %ymm5 + vfmadd213pd __dC6(%rax), %ymm5, %ymm4 + vfmadd213pd __dC5(%rax), %ymm5, %ymm4 + vfmadd213pd __dC4(%rax), %ymm5, %ymm4 + +/* Poly = C3+R2*(C4+R2*(C5+R2*(C6+R2*C7))) */ + vfmadd213pd __dC3(%rax), %ymm5, %ymm4 + +/* Poly = R+R*(R2*(C1+R2*(C2+R2*Poly))) */ + vfmadd213pd __dC2(%rax), %ymm5, %ymm4 + vfmadd213pd __dC1(%rax), %ymm5, %ymm4 + vmulpd %ymm5, %ymm4, %ymm6 + vfmadd213pd %ymm0, %ymm0, %ymm6 + +/* + RECONSTRUCTION: + Final sign setting: Res = Poly^SignRes */ + vxorpd %ymm7, %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 + vmovupd %ymm1, 320(%rsp) + vmovupd %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 + vmovupd 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 + shlq $4, %r15 + vmovsd 328(%rsp,%r15), %xmm0 + vzeroupper + + call JUMPTARGET(cos) + + vmovsd %xmm0, 392(%rsp,%r15) + jmp .LBL_1_8 + +.LBL_1_12: + movzbl %r12b, %r15d + shlq $4, %r15 + vmovsd 320(%rsp,%r15), %xmm0 + vzeroupper + + call JUMPTARGET(cos) + + vmovsd %xmm0, 384(%rsp,%r15) + jmp .LBL_1_7 + +END (_ZGVdN4v_cos_avx2) |