diff options
Diffstat (limited to 'sysdeps/x86_64/fpu/multiarch/svml_d_exp2_core_sse4.S')
| -rw-r--r-- | sysdeps/x86_64/fpu/multiarch/svml_d_exp2_core_sse4.S | 225 |
1 files changed, 0 insertions, 225 deletions
diff --git a/sysdeps/x86_64/fpu/multiarch/svml_d_exp2_core_sse4.S b/sysdeps/x86_64/fpu/multiarch/svml_d_exp2_core_sse4.S deleted file mode 100644 index 864dc5ae9f..0000000000 --- a/sysdeps/x86_64/fpu/multiarch/svml_d_exp2_core_sse4.S +++ /dev/null @@ -1,225 +0,0 @@ -/* Function exp 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_d_exp_data.h" - - .text -ENTRY (_ZGVbN2v_exp_sse4) -/* - ALGORITHM DESCRIPTION: - - Argument representation: - N = rint(X*2^k/ln2) = 2^k*M+j - X = N*ln2/2^k + r = M*ln2 + ln2*(j/2^k) + r - then -ln2/2^(k+1) < r < ln2/2^(k+1) - Alternatively: - N = trunc(X*2^k/ln2) - then 0 < r < ln2/2^k - - Result calculation: - exp(X) = exp(M*ln2 + ln2*(j/2^k) + r) - = 2^M * 2^(j/2^k) * exp(r) - 2^M is calculated by bit manipulation - 2^(j/2^k) is stored in table - exp(r) is approximated by polynomial. - - The table lookup is skipped if k = 0. */ - - 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, %xmm3 - movq __svml_dexp_data@GOTPCREL(%rip), %r8 - -/* iAbsX = (int)(lX>>32), lX = *(longlong*)&X */ - pshufd $221, %xmm3, %xmm7 - movups __dbInvLn2(%r8), %xmm0 - -/* dK = X*dbInvLn2 */ - mulpd %xmm3, %xmm0 - movq __iAbsMask(%r8), %xmm5 - movq __iDomainRange(%r8), %xmm6 - -/* iAbsX = iAbsX&iAbsMask */ - pand %xmm5, %xmm7 - -/* iRangeMask = (iAbsX>iDomainRange) */ - pcmpgtd %xmm6, %xmm7 - -/* Mask = iRangeMask?1:0, set mask for overflow/underflow */ - movmskps %xmm7, %eax - -/* dN = rint(X*2^k/Ln2) */ - xorps %xmm7, %xmm7 - movups __dbLn2hi(%r8), %xmm5 - movups __dbLn2lo(%r8), %xmm6 - roundpd $0, %xmm0, %xmm7 - -/* dR = X - dN*dbLn2hi, dbLn2hi is 52-8-k hi bits of ln2/2^k */ - mulpd %xmm7, %xmm5 - -/* dR = dR - dN*dbLn2lo, dbLn2lo is 40..94 bits of lo part of ln2/2^k */ - mulpd %xmm6, %xmm7 - movups __dbShifter(%r8), %xmm4 - -/* dM = X*dbInvLn2+dbShifter */ - addpd %xmm0, %xmm4 - movaps %xmm3, %xmm0 - subpd %xmm5, %xmm0 - subpd %xmm7, %xmm0 - movups __dPC2(%r8), %xmm5 - -/* exp(r) = b0+r*(b0+r*(b1+r*b2)) */ - mulpd %xmm0, %xmm5 - addpd __dPC1(%r8), %xmm5 - mulpd %xmm0, %xmm5 - movups __dPC0(%r8), %xmm6 - addpd %xmm6, %xmm5 - mulpd %xmm5, %xmm0 - movdqu __lIndexMask(%r8), %xmm2 - -/* lIndex = (*(longlong*)&dM)&lIndexMask, lIndex is the lower K bits of lM */ - movdqa %xmm2, %xmm1 - -/* lM = (*(longlong*)&dM)&(~lIndexMask) */ - pandn %xmm4, %xmm2 - pand %xmm4, %xmm1 - -/* lM = lM<<(52-K), 2^M */ - psllq $42, %xmm2 - -/* table lookup for dT[j] = 2^(j/2^k) */ - movd %xmm1, %edx - pextrw $4, %xmm1, %ecx - addpd %xmm0, %xmm6 - shll $3, %edx - shll $3, %ecx - movq (%r8,%rdx), %xmm0 - andl $3, %eax - movhpd (%r8,%rcx), %xmm0 - -/* 2^(j/2^k) * exp(r) */ - mulpd %xmm6, %xmm0 - -/* multiply by 2^M through integer add */ - paddq %xmm2, %xmm0 - 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 %xmm3, 192(%rsp) - movups %xmm0, 256(%rsp) - je .LBL_1_2 - - xorb %cl, %cl - xorl %edx, %edx - 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 %cl, %r12b - movq %r13, 160(%rsp) - cfi_offset_rel_rsp (13, 160) - movl %eax, %r13d - movq %r14, 152(%rsp) - cfi_offset_rel_rsp (14, 152) - movl %edx, %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 - shlq $4, %r15 - movsd 200(%rsp,%r15), %xmm0 - - call JUMPTARGET(__exp_finite) - - movsd %xmm0, 264(%rsp,%r15) - jmp .LBL_1_8 - -.LBL_1_12: - movzbl %r12b, %r15d - shlq $4, %r15 - movsd 192(%rsp,%r15), %xmm0 - - call JUMPTARGET(__exp_finite) - - movsd %xmm0, 256(%rsp,%r15) - jmp .LBL_1_7 - -END (_ZGVbN2v_exp_sse4) |