[7/N,v2,x86_64] Vectorized math functions
diff mbox

Message ID CAMXFM3sG=Uo6pJsNn34VtU+VDd4+VO+YyoUw3hCYpFi_K1cLsg@mail.gmail.com
State New
Headers show

Commit Message

Andrew Senkevich Dec. 2, 2014, 4:57 p.m. UTC
This patch adds vector implementations of cos for x86_64 (SSE4, AVX
and AVX2 versions).

        * sysdeps/x86_64/fpu/svml_d_cos2_core.S: New file.
        * sysdeps/x86_64/fpu/svml_d_cos4_core_avx.S: New file.
        * sysdeps/x86_64/fpu/svml_d_cos4_core_avx2.S: New file.
        * sysdeps/x86_64/fpu/svml_d_cos_data.S: New file.
        * sysdeps/x86_64/fpu/svml_d_cos_data.h: New file.
        * sysdeps/x86_64/fpu/Versions: New file.



--
WBR,
Andrew

Comments

Joseph Myers Dec. 3, 2014, 6:14 p.m. UTC | #1
On Tue, 2 Dec 2014, Andrew Senkevich wrote:

> This patch adds vector implementations of cos for x86_64 (SSE4, AVX
> and AVX2 versions).
> 
>         * sysdeps/x86_64/fpu/svml_d_cos2_core.S: New file.
>         * sysdeps/x86_64/fpu/svml_d_cos4_core_avx.S: New file.
>         * sysdeps/x86_64/fpu/svml_d_cos4_core_avx2.S: New file.
>         * sysdeps/x86_64/fpu/svml_d_cos_data.S: New file.
>         * sysdeps/x86_64/fpu/svml_d_cos_data.h: New file.
>         * sysdeps/x86_64/fpu/Versions: New file.

I think patches 7 and 8 should be combined, rather than having an 
intermediate state where these sources are present but not actually used.
Andrew Senkevich Dec. 9, 2014, 10:58 a.m. UTC | #2
2014-12-03 21:14 GMT+03:00 Joseph Myers <joseph@codesourcery.com>:
> On Tue, 2 Dec 2014, Andrew Senkevich wrote:
>
>> This patch adds vector implementations of cos for x86_64 (SSE4, AVX
>> and AVX2 versions).
>>
>>         * sysdeps/x86_64/fpu/svml_d_cos2_core.S: New file.
>>         * sysdeps/x86_64/fpu/svml_d_cos4_core_avx.S: New file.
>>         * sysdeps/x86_64/fpu/svml_d_cos4_core_avx2.S: New file.
>>         * sysdeps/x86_64/fpu/svml_d_cos_data.S: New file.
>>         * sysdeps/x86_64/fpu/svml_d_cos_data.h: New file.
>>         * sysdeps/x86_64/fpu/Versions: New file.
>
> I think patches 7 and 8 should be combined, rather than having an
> intermediate state where these sources are present but not actually used.

Combined and attached, it seems not passed being sent in plain text.

ChangeLog

        * sysdeps/x86_64/fpu/svml_d_cos2_core.S: New file.
        * sysdeps/x86_64/fpu/svml_d_cos4_core_avx.S: New file.
        * sysdeps/x86_64/fpu/svml_d_cos4_core_avx2.S: New file.
        * sysdeps/x86_64/fpu/svml_d_cos_data.S: New file.
        * sysdeps/x86_64/fpu/svml_d_cos_data.h: New file.
        * sysdeps/x86_64/fpu/Versions: New file.
        * math/bits/mathcalls.h: Added cos declaration with __MATHCALL_VEC.
        * sysdeps/x86/fpu/bits/math-vector.h: Added SIMD declaration for cos.
        * sysdeps/x86_64/configure: Regenerated.
        * sysdeps/x86_64/configure.ac: Options for libmvec build.
        * sysdeps/unix/sysv/linux/x86_64/libmvec.abilist: New file.
        * sysdeps/x86_64/fpu/Makefile: New file.


--
WBR,
Andrew
Joseph Myers Dec. 11, 2014, 5:57 p.m. UTC | #3
On Tue, 9 Dec 2014, Andrew Senkevich wrote:

> Combined and attached, it seems not passed being sent in plain text.
> 
> ChangeLog
> 
>         * sysdeps/x86_64/fpu/svml_d_cos2_core.S: New file.
>         * sysdeps/x86_64/fpu/svml_d_cos4_core_avx.S: New file.
>         * sysdeps/x86_64/fpu/svml_d_cos4_core_avx2.S: New file.
>         * sysdeps/x86_64/fpu/svml_d_cos_data.S: New file.
>         * sysdeps/x86_64/fpu/svml_d_cos_data.h: New file.
>         * sysdeps/x86_64/fpu/Versions: New file.
>         * math/bits/mathcalls.h: Added cos declaration with __MATHCALL_VEC.
>         * sysdeps/x86/fpu/bits/math-vector.h: Added SIMD declaration for cos.
>         * sysdeps/x86_64/configure: Regenerated.
>         * sysdeps/x86_64/configure.ac: Options for libmvec build.
>         * sysdeps/unix/sysv/linux/x86_64/libmvec.abilist: New file.
>         * sysdeps/x86_64/fpu/Makefile: New file.

I'll leave final review for when the ABI document explaining what the 
pragma means for function version availability on x86_64 is ready and 
agreed by compiler implementations, but apart from that this patch may be 
ready.

Patch
diff mbox

diff --git a/sysdeps/x86_64/fpu/svml_d_cos2_core.S
b/sysdeps/x86_64/fpu/svml_d_cos2_core.S
new file mode 100644
index 0000000..a813747
--- /dev/null
+++ b/sysdeps/x86_64/fpu/svml_d_cos2_core.S
@@ -0,0 +1,208 @@ 
+/* Function cos vectorized with SSE4.
+   Copyright (C) 2014 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_cos_data.h"
+
+ .text
+ENTRY(_ZGVbN2v_cos)
+
+/* 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
+        movq      %rsp, %rbp
+        andq      $-64, %rsp
+        subq      $320, %rsp
+        movaps    %xmm0, %xmm3
+        movq      __svml_dcos_data@GOTPCREL(%rip), %rax
+        movups    __dHalfPI(%rax), %xmm2
+
+/* ARGUMENT RANGE REDUCTION:
+ * Add Pi/2 to argument: X' = X+Pi/2
+ */
+        addpd     %xmm3, %xmm2
+        movups    __dInvPI(%rax), %xmm5
+        movups    __dAbsMask(%rax), %xmm4
+
+/* Get absolute argument value: X' = |X'| */
+        andps     %xmm2, %xmm4
+
+/* Y = X'*InvPi + RS : right shifter add */
+        mulpd     %xmm5, %xmm2
+
+/* Check for large arguments path */
+        cmpnlepd  __dRangeVal(%rax), %xmm4
+        movups    __dRShifter(%rax), %xmm6
+        addpd     %xmm6, %xmm2
+        movmskpd  %xmm4, %ecx
+
+/* N = Y - RS : right shifter sub */
+        movaps    %xmm2, %xmm1
+
+/* SignRes = Y<<63 : shift LSB to MSB place for result sign */
+        psllq     $63, %xmm2
+        subpd     %xmm6, %xmm1
+
+/* N = N - 0.5 */
+        subpd     __dOneHalf(%rax), %xmm1
+        movups    __dPI1(%rax), %xmm7
+
+/* R = X - N*Pi1 */
+        mulpd     %xmm1, %xmm7
+        movups    __dPI2(%rax), %xmm4
+
+/* R = R - N*Pi2 */
+        mulpd     %xmm1, %xmm4
+        subpd     %xmm7, %xmm0
+        movups    __dPI3(%rax), %xmm5
+
+/* R = R - N*Pi3 */
+        mulpd     %xmm1, %xmm5
+        subpd     %xmm4, %xmm0
+
+/* R = R - N*Pi4 */
+        movups     __dPI4(%rax), %xmm6
+        mulpd     %xmm6, %xmm1
+        subpd     %xmm5, %xmm0
+        subpd     %xmm1, %xmm0
+
+/* POLYNOMIAL APPROXIMATION:
+ * R2 = R*R
+ */
+        movaps    %xmm0, %xmm4
+        mulpd     %xmm0, %xmm4
+        movups    __dC7(%rax), %xmm1
+        mulpd     %xmm4, %xmm1
+        addpd     __dC6(%rax), %xmm1
+        mulpd     %xmm4, %xmm1
+        addpd     __dC5(%rax), %xmm1
+        mulpd     %xmm4, %xmm1
+        addpd     __dC4(%rax), %xmm1
+
+/* Poly = C3+R2*(C4+R2*(C5+R2*(C6+R2*C7))) */
+        mulpd     %xmm4, %xmm1
+        addpd     __dC3(%rax), %xmm1
+
+/* Poly = R+R*(R2*(C1+R2*(C2+R2*Poly))) */
+        mulpd     %xmm4, %xmm1
+        addpd     __dC2(%rax), %xmm1
+        mulpd     %xmm4, %xmm1
+        addpd     __dC1(%rax), %xmm1
+        mulpd     %xmm1, %xmm4
+        mulpd     %xmm0, %xmm4
+        addpd     %xmm4, %xmm0
+
+/* RECONSTRUCTION:
+ * Final sign setting: Res = Poly^SignRes
+ */
+        xorps     %xmm2, %xmm0
+        testl     %ecx, %ecx
+        jne       .LBL_1_3
+
+.LBL_1_2:
+        movq      %rbp, %rsp
+        popq      %rbp
+        ret
+
+.LBL_1_3:
+        movups    %xmm3, 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)
+        movb      %dl, %r12b
+        movq      %r13, 160(%rsp)
+        movl      %ecx, %r13d
+        movq      %r14, 152(%rsp)
+        movl      %eax, %r14d
+        movq      %r15, 144(%rsp)
+
+.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
+        movq      160(%rsp), %r13
+        movq      152(%rsp), %r14
+        movq      144(%rsp), %r15
+        movups    256(%rsp), %xmm0
+        jmp       .LBL_1_2
+
+.LBL_1_10:
+        movzbl    %r12b, %r15d
+        shlq      $4, %r15
+        movsd     200(%rsp,%r15), %xmm0
+
+        call      cos@PLT
+
+        movsd     %xmm0, 264(%rsp,%r15)
+        jmp       .LBL_1_8
+
+.LBL_1_12:
+        movzbl    %r12b, %r15d
+        shlq      $4, %r15
+        movsd     192(%rsp,%r15), %xmm0
+
+        call      cos@PLT
+
+        movsd     %xmm0, 256(%rsp,%r15)
+        jmp       .LBL_1_7
+
+END(_ZGVbN2v_cos)
diff --git a/sysdeps/x86_64/fpu/svml_d_cos4_core_avx.S
b/sysdeps/x86_64/fpu/svml_d_cos4_core_avx.S
new file mode 100644
index 0000000..24b4f75
--- /dev/null
+++ b/sysdeps/x86_64/fpu/svml_d_cos4_core_avx.S
@@ -0,0 +1,39 @@ 
+/* Function cos vectorized in AVX ISA as wrapper to SSE4 ISA version.
+   Copyright (C) 2014 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>
+
+ .text
+ENTRY(_ZGVcN4v_cos)
+        pushq %rbp
+        movq %rsp, %rbp
+        andq $-32, %rsp
+        subq $32, %rsp
+        vextractf128 $1, %ymm0, (%rsp)
+        vzeroupper
+        call _ZGVbN2v_cos@PLT
+        vmovapd %xmm0, 16(%rsp)
+        vmovaps (%rsp), %xmm0
+        call _ZGVbN2v_cos@PLT
+        vmovapd %xmm0, %xmm1
+        vmovapd 16(%rsp), %xmm0
+        vinsertf128 $1, %xmm1, %ymm0, %ymm0
+        movq %rbp, %rsp
+        popq %rbp
+        ret
+END(_ZGVcN4v_cos)
diff --git a/sysdeps/x86_64/fpu/svml_d_cos4_core_avx2.S
b/sysdeps/x86_64/fpu/svml_d_cos4_core_avx2.S
new file mode 100644
index 0000000..c5bf3e4
--- /dev/null
+++ b/sysdeps/x86_64/fpu/svml_d_cos4_core_avx2.S
@@ -0,0 +1,193 @@ 
+/* Function cos vectorized with AVX2.
+   Copyright (C) 2014 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_cos_data.h"
+
+ .text
+ENTRY(_ZGVdN4v_cos)
+
+/* 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
+        movq      %rsp, %rbp
+        andq      $-64, %rsp
+        subq      $448, %rsp
+        movq      __svml_dcos_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:
+        movq      %rbp, %rsp
+        popq      %rbp
+        ret
+
+.LBL_1_3:
+        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)
+        movb      %dl, %r12b
+        movq      %r13, 288(%rsp)
+        movl      %ecx, %r13d
+        movq      %r14, 280(%rsp)
+        movl      %eax, %r14d
+        movq      %r15, 272(%rsp)
+
+.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
+        movq      288(%rsp), %r13
+        movq      280(%rsp), %r14
+        movq      272(%rsp), %r15
+        jmp       .LBL_1_2
+
+.LBL_1_10:
+        movzbl    %r12b, %r15d
+        shlq      $4, %r15
+        vmovsd    328(%rsp,%r15), %xmm0
+        vzeroupper
+
+        call      cos@PLT
+
+        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      cos@PLT
+
+        vmovsd    %xmm0, 384(%rsp,%r15)
+        jmp       .LBL_1_7
+
+END(_ZGVdN4v_cos)
diff --git a/sysdeps/x86_64/fpu/svml_d_cos_data.S
b/sysdeps/x86_64/fpu/svml_d_cos_data.S
new file mode 100644
index 0000000..54faa20
--- /dev/null
+++ b/sysdeps/x86_64/fpu/svml_d_cos_data.S
@@ -0,0 +1,114 @@ 
+/* Data for vectorized cos.
+   Copyright (C) 2014 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 "svml_d_cos_data.h"
+
+.macro double_vector offset value
+.if .-__svml_dcos_data != \offset
+.err
+.endif
+.rept 8
+.quad \value
+.endr
+.endm
+
+ .section .rodata, "a"
+ .align 64
+
+/* Data table for vector implementations of function cos.
+ * The table may contain polynomial, reduction, lookup
+ * coefficients and other constants obtained through different
+ * methods of research and experimental work.
+ */
+ .globl __svml_dcos_data
+__svml_dcos_data:
+
+/* General purpose constants:
+ * absolute value mask
+ */
+double_vector __dAbsMask 0x7fffffffffffffff
+
+/* working range threshold */
+double_vector __dRangeVal 0x4160000000000000
+
+/* PI/2 */
+double_vector __dHalfPI 0x3ff921fb54442d18
+
+/* 1/PI */
+double_vector __dInvPI 0x3fd45f306dc9c883
+
+/* right-shifter constant */
+double_vector __dRShifter 0x4338000000000000
+
+/* 0.5 */
+double_vector __dOneHalf 0x3fe0000000000000
+
+/* Range reduction PI-based constants:
+ * PI high part
+ */
+double_vector __dPI1 0x400921fb40000000
+
+/* PI mid  part 1 */
+double_vector __dPI2 0x3e84442d00000000
+
+/* PI mid  part 2 */
+double_vector __dPI3 0x3d08469880000000
+
+/* PI low  part */
+double_vector __dPI4 0x3b88cc51701b839a
+
+/* Range reduction PI-based constants if FMA available:
+ * PI high part (FMA available)
+ */
+double_vector __dPI1_FMA 0x400921fb54442d18
+
+/* PI mid part  (FMA available) */
+double_vector __dPI2_FMA 0x3ca1a62633145c06
+
+/* PI low part  (FMA available) */
+double_vector __dPI3_FMA 0x395c1cd129024e09
+
+/* Polynomial coefficients (relative error 2^(-52.115)): */
+double_vector __dC1 0xbfc55555555554a7
+double_vector __dC2 0x3f8111111110a4a8
+double_vector __dC3 0xbf2a01a019a5b86d
+double_vector __dC4 0x3ec71de38030fea0
+double_vector __dC5 0xbe5ae63546002231
+double_vector __dC6 0x3de60e6857a2f220
+double_vector __dC7 0xbd69f0d60811aac8
+
+/*
+ * Additional constants:
+ * absolute value mask
+ */
+double_vector __dAbsMask_la 0x7fffffffffffffff
+
+/* 1/PI */
+double_vector __dInvPI_la 0x3fd45f306dc9c883
+
+/* right-shifer for low accuracy version */
+double_vector __dRShifter_la 0x4330000000000000
+
+/* right-shifer-1.0 for low accuracy version */
+double_vector __dRShifterm5_la 0x432fffffffffffff
+
+/* right-shifer with low mask for low accuracy version */
+double_vector __dRXmax_la 0x43300000007ffffe
+
+ .type __svml_dcos_data,@object
+ .size __svml_dcos_data,.-__svml_dcos_data
diff --git a/sysdeps/x86_64/fpu/svml_d_cos_data.h
b/sysdeps/x86_64/fpu/svml_d_cos_data.h
new file mode 100644
index 0000000..21fa806
--- /dev/null
+++ b/sysdeps/x86_64/fpu/svml_d_cos_data.h
@@ -0,0 +1,48 @@ 
+/* Offsets for data table for vectorized cos.
+   Copyright (C) 2014 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/>.  */
+
+#ifndef D_COS_DATA_H
+#define D_COS_DATA_H
+
+#define __dAbsMask              0
+#define __dRangeVal             64
+#define __dHalfPI               128
+#define __dInvPI                192
+#define __dRShifter             256
+#define __dOneHalf              320
+#define __dPI1                  384
+#define __dPI2                  448
+#define __dPI3                  512
+#define __dPI4                  576
+#define __dPI1_FMA              640
+#define __dPI2_FMA              704
+#define __dPI3_FMA              768
+#define __dC1                   832
+#define __dC2                   896
+#define __dC3                   960
+#define __dC4                   1024
+#define __dC5                   1088
+#define __dC6                   1152
+#define __dC7                   1216
+#define __dAbsMask_la           1280
+#define __dInvPI_la             1344
+#define __dRShifter_la          1408
+#define __dRShifterm5_la        1472
+#define __dRXmax_la             1536
+
+#endif
diff --git a/sysdeps/x86_64/fpu/Versions b/sysdeps/x86_64/fpu/Versions
new file mode 100644
index 0000000..c18d985
--- /dev/null
+++ b/sysdeps/x86_64/fpu/Versions
@@ -0,0 +1,7 @@ 
+libmvec {
+  GLIBC_2.21 {
+    _ZGVbN2v_cos;
+    _ZGVcN4v_cos;
+    _ZGVdN4v_cos;
+  }
+}