diff mbox series

[v1,24/27] x86/fpu: Optimize svml_s_logf16_core_avx512.S

Message ID 20221207085236.1424424-24-goldstein.w.n@gmail.com
State New
Headers show
Series [v1,01/27] x86/fpu: Create helper file for common data macros | expand

Commit Message

Noah Goldstein Dec. 7, 2022, 8:52 a.m. UTC
1. Improve special values case which ends up covering ~half of all
   float bit patterns.
2. Cleanup some missed optimizations in instruction selection /
   unnecissary repeated rodata references.
3. Remove unused rodata.
4. Use common data definitions where possible.

As well instead of using the shared `__svml_slogf_data` just define
the data locally.  This is because; 1) Its not really ideal for
the sse4/avx2 to reuse the avx512 tables as it pollute the cache
which unnecessarily large blocks.  2) Really only one of the
versions is ever expected to be used by a given process so there
isn't any constructive caching between them. And 3) there is not
enough data shared to make up for the first two reasons.

Lastly, the avx512-skl implementation no longer uses `vpternlogd` (the
only AVX512-DQ instruction) so make the avx512-knl implementation
just a alias to the SKL one.

Code Size Change: -1285 Bytes (267 - 1552) (With removing KNL impl)

Input                                 New Time / Old Time
0F          (0x00000000)           -> 0.7324
0F          (0x0000ffff, Denorm)   -> 0.9708
.1F         (0x3dcccccd)           -> 0.9535
5F          (0x40a00000)           -> 0.9699
2315255808F (0x4f0a0000)           -> 0.9909
-NaN        (0xffffffff)           -> 0.6798
---
 .../fpu/multiarch/svml_s_logf16_core_avx512.S | 553 ++++++------------
 1 file changed, 173 insertions(+), 380 deletions(-)
diff mbox series

Patch

diff --git a/sysdeps/x86_64/fpu/multiarch/svml_s_logf16_core_avx512.S b/sysdeps/x86_64/fpu/multiarch/svml_s_logf16_core_avx512.S
index eb830a6579..ebc959aa74 100644
--- a/sysdeps/x86_64/fpu/multiarch/svml_s_logf16_core_avx512.S
+++ b/sysdeps/x86_64/fpu/multiarch/svml_s_logf16_core_avx512.S
@@ -16,388 +16,181 @@ 
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
+#define LOCAL_DATA_NAME	__svml_slog_data_internal
+#define LOCAL_DATA_NAME_UNALIGNED	__svml_slog_data_internal_unaligned
+#include "svml_s_common_evex512_rodata_offsets.h"
+
+/* Offsets for data table __svml_slog_data_internal_unaligned.
+   4 bytes each.  */
+#define _iLoRange	0
+
+/* Offsets for data table __svml_slog_data_internal
+   64 bytes each.  */
+#define _iBrkValue	0
+#define _sPoly_7	64
+#define _sPoly_6	128
+#define _sPoly_5	192
+#define _sPoly_4	256
+#define _sPoly_3	320
+#define _sPoly_2	384
+#define _sLn2	448
+
 #include <sysdep.h>
-#include "svml_s_logf_data.h"
-#include "svml_s_wrapper_impl.h"
 
 	.section .text.evex512, "ax", @progbits
-ENTRY (_ZGVeN16v_logf_knl)
-/*
-   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      $1280, %rsp
-        movq      __svml_slog_data@GOTPCREL(%rip), %rax
-        movl      $-1, %ecx
-
-/* reduction: compute r,n */
-        vpsubd    _iBrkValue(%rax), %zmm0, %zmm2
-        vmovups   _sPoly_7(%rax), %zmm7
-        vpandd    _iOffExpoMask(%rax), %zmm2, %zmm3
-
-/* exponent_x (mantissa_x<4/3) or exponent_x+1 (mantissa_x>4/3) */
-        vpsrad    $23, %zmm2, %zmm4
-
-/* check for working range,
-   set special argument mask (denormals/zero/Inf/NaN)
- */
-        vpaddd    _iHiDelta(%rax), %zmm0, %zmm1
-
-/* mantissa_x (mantissa_x<4/3), or 0.5*mantissa_x (mantissa_x>4/3) */
-        vpaddd    _iBrkValue(%rax), %zmm3, %zmm6
-        vpcmpd    $1, _iLoRange(%rax), %zmm1, %k1
-        vcvtdq2ps {rn-sae}, %zmm4, %zmm1
-
-/* reduced argument R */
-        vsubps       _sOne(%rax), %zmm6, %zmm8
-        vpbroadcastd %ecx, %zmm5{%k1}{z}
-
-/* polynomial evaluation starts here */
-        vfmadd213ps _sPoly_6(%rax), %zmm8, %zmm7
-        vptestmd    %zmm5, %zmm5, %k0
-        kmovw       %k0, %ecx
-        vfmadd213ps _sPoly_5(%rax), %zmm8, %zmm7
-        vfmadd213ps _sPoly_4(%rax), %zmm8, %zmm7
-        vfmadd213ps _sPoly_3(%rax), %zmm8, %zmm7
-        vfmadd213ps _sPoly_2(%rax), %zmm8, %zmm7
-        vfmadd213ps _sPoly_1(%rax), %zmm8, %zmm7
-        vmulps      %zmm8, %zmm7, %zmm9
-
-/* polynomial evaluation end */
-        vfmadd213ps %zmm8, %zmm8, %zmm9
-
-/*
-   final reconstruction:
-   add exponent_value*log2 to polynomial result
- */
-        vfmadd132ps _sLn2(%rax), %zmm9, %zmm1
-        testl       %ecx, %ecx
-        jne         .LBL_1_3
-
-.LBL_1_2:
-        cfi_remember_state
-        vmovaps   %zmm1, %zmm0
-        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
-        vmovups   %zmm0, 1152(%rsp)
-        vmovups   %zmm1, 1216(%rsp)
-        je        .LBL_1_2
-
-        xorb      %dl, %dl
-        kmovw     %k4, 1048(%rsp)
-        xorl      %eax, %eax
-        kmovw     %k5, 1040(%rsp)
-        kmovw     %k6, 1032(%rsp)
-        kmovw     %k7, 1024(%rsp)
-        vmovups   %zmm16, 960(%rsp)
-        vmovups   %zmm17, 896(%rsp)
-        vmovups   %zmm18, 832(%rsp)
-        vmovups   %zmm19, 768(%rsp)
-        vmovups   %zmm20, 704(%rsp)
-        vmovups   %zmm21, 640(%rsp)
-        vmovups   %zmm22, 576(%rsp)
-        vmovups   %zmm23, 512(%rsp)
-        vmovups   %zmm24, 448(%rsp)
-        vmovups   %zmm25, 384(%rsp)
-        vmovups   %zmm26, 320(%rsp)
-        vmovups   %zmm27, 256(%rsp)
-        vmovups   %zmm28, 192(%rsp)
-        vmovups   %zmm29, 128(%rsp)
-        vmovups   %zmm30, 64(%rsp)
-        vmovups   %zmm31, (%rsp)
-        movq      %rsi, 1064(%rsp)
-        movq      %rdi, 1056(%rsp)
-        movq      %r12, 1096(%rsp)
-        cfi_offset_rel_rsp (12, 1096)
-        movb      %dl, %r12b
-        movq      %r13, 1088(%rsp)
-        cfi_offset_rel_rsp (13, 1088)
-        movl      %ecx, %r13d
-        movq      %r14, 1080(%rsp)
-        cfi_offset_rel_rsp (14, 1080)
-        movl      %eax, %r14d
-        movq      %r15, 1072(%rsp)
-        cfi_offset_rel_rsp (15, 1072)
-        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:
-        addb      $1, %r12b
-        addl      $2, %r14d
-        cmpb      $16, %r12b
-        jb        .LBL_1_6
-
-        kmovw     1048(%rsp), %k4
-        movq      1064(%rsp), %rsi
-        kmovw     1040(%rsp), %k5
-        movq      1056(%rsp), %rdi
-        kmovw     1032(%rsp), %k6
-        movq      1096(%rsp), %r12
-        cfi_restore (%r12)
-        movq      1088(%rsp), %r13
-        cfi_restore (%r13)
-        kmovw     1024(%rsp), %k7
-        vmovups   960(%rsp), %zmm16
-        vmovups   896(%rsp), %zmm17
-        vmovups   832(%rsp), %zmm18
-        vmovups   768(%rsp), %zmm19
-        vmovups   704(%rsp), %zmm20
-        vmovups   640(%rsp), %zmm21
-        vmovups   576(%rsp), %zmm22
-        vmovups   512(%rsp), %zmm23
-        vmovups   448(%rsp), %zmm24
-        vmovups   384(%rsp), %zmm25
-        vmovups   320(%rsp), %zmm26
-        vmovups   256(%rsp), %zmm27
-        vmovups   192(%rsp), %zmm28
-        vmovups   128(%rsp), %zmm29
-        vmovups   64(%rsp), %zmm30
-        vmovups   (%rsp), %zmm31
-        movq      1080(%rsp), %r14
-        cfi_restore (%r14)
-        movq      1072(%rsp), %r15
-        cfi_restore (%r15)
-        vmovups   1216(%rsp), %zmm1
-        jmp       .LBL_1_2
-
-.LBL_1_10:
-        cfi_restore_state
-        movzbl    %r12b, %r15d
-        vmovss    1156(%rsp,%r15,8), %xmm0
-        call      JUMPTARGET(logf)
-        vmovss    %xmm0, 1220(%rsp,%r15,8)
-        jmp       .LBL_1_8
-
-.LBL_1_12:
-        movzbl    %r12b, %r15d
-        vmovss    1152(%rsp,%r15,8), %xmm0
-        call      JUMPTARGET(logf)
-        vmovss    %xmm0, 1216(%rsp,%r15,8)
-        jmp       .LBL_1_7
-END (_ZGVeN16v_logf_knl)
-
 ENTRY (_ZGVeN16v_logf_skx)
-/*
-   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      $1280, %rsp
-        movq      __svml_slog_data@GOTPCREL(%rip), %rax
-        vpternlogd $0xff, %zmm6, %zmm6, %zmm6
-        vmovups _iBrkValue(%rax), %zmm4
-        vmovups _sPoly_7(%rax), %zmm8
-
-/*
-   check for working range,
-   set special argument mask (denormals/zero/Inf/NaN)
- */
-        vpaddd _iHiDelta(%rax), %zmm0, %zmm1
-
-/* reduction: compute r,n */
-        vpsubd    %zmm4, %zmm0, %zmm2
-        vpcmpd    $5, _iLoRange(%rax), %zmm1, %k1
-
-/* exponent_x (mantissa_x<4/3) or exponent_x+1 (mantissa_x>4/3) */
-        vpsrad    $23, %zmm2, %zmm5
-        vpandd _iOffExpoMask(%rax), %zmm2, %zmm3
-
-/* mantissa_x (mantissa_x<4/3), or 0.5*mantissa_x (mantissa_x>4/3) */
-        vpaddd    %zmm4, %zmm3, %zmm7
-
-/* reduced argument R */
-        vsubps _sOne(%rax), %zmm7, %zmm9
-
-/* polynomial evaluation starts here */
-        vfmadd213ps _sPoly_6(%rax), %zmm9, %zmm8
-        vfmadd213ps _sPoly_5(%rax), %zmm9, %zmm8
-        vfmadd213ps _sPoly_4(%rax), %zmm9, %zmm8
-        vfmadd213ps _sPoly_3(%rax), %zmm9, %zmm8
-        vfmadd213ps _sPoly_2(%rax), %zmm9, %zmm8
-        vfmadd213ps _sPoly_1(%rax), %zmm9, %zmm8
-        vmulps    %zmm9, %zmm8, %zmm10
-
-/* polynomial evaluation end */
-        vfmadd213ps %zmm9, %zmm9, %zmm10
-        vpandnd   %zmm1, %zmm1, %zmm6{%k1}
-        vptestmd  %zmm6, %zmm6, %k0
-        vcvtdq2ps {rn-sae}, %zmm5, %zmm1
-        kmovw     %k0, %ecx
-
-/*
-   final reconstruction:
-   add exponent_value*log2 to polynomial result
- */
-        vfmadd132ps _sLn2(%rax), %zmm10, %zmm1
-        testl     %ecx, %ecx
-        jne       .LBL_2_3
-
-.LBL_2_2:
-        cfi_remember_state
-        vmovaps   %zmm1, %zmm0
-        movq      %rbp, %rsp
-        cfi_def_cfa_register (%rsp)
-        popq      %rbp
-        cfi_adjust_cfa_offset (-8)
-        cfi_restore (%rbp)
-        ret
-
-.LBL_2_3:
-        cfi_restore_state
-        vmovups   %zmm0, 1152(%rsp)
-        vmovups   %zmm1, 1216(%rsp)
-        je        .LBL_2_2
-
-        xorb      %dl, %dl
-        xorl      %eax, %eax
-        kmovw     %k4, 1048(%rsp)
-        kmovw     %k5, 1040(%rsp)
-        kmovw     %k6, 1032(%rsp)
-        kmovw     %k7, 1024(%rsp)
-        vmovups   %zmm16, 960(%rsp)
-        vmovups   %zmm17, 896(%rsp)
-        vmovups   %zmm18, 832(%rsp)
-        vmovups   %zmm19, 768(%rsp)
-        vmovups   %zmm20, 704(%rsp)
-        vmovups   %zmm21, 640(%rsp)
-        vmovups   %zmm22, 576(%rsp)
-        vmovups   %zmm23, 512(%rsp)
-        vmovups   %zmm24, 448(%rsp)
-        vmovups   %zmm25, 384(%rsp)
-        vmovups   %zmm26, 320(%rsp)
-        vmovups   %zmm27, 256(%rsp)
-        vmovups   %zmm28, 192(%rsp)
-        vmovups   %zmm29, 128(%rsp)
-        vmovups   %zmm30, 64(%rsp)
-        vmovups   %zmm31, (%rsp)
-        movq      %rsi, 1064(%rsp)
-        movq      %rdi, 1056(%rsp)
-        movq      %r12, 1096(%rsp)
-        cfi_offset_rel_rsp (12, 1096)
-        movb      %dl, %r12b
-        movq      %r13, 1088(%rsp)
-        cfi_offset_rel_rsp (13, 1088)
-        movl      %ecx, %r13d
-        movq      %r14, 1080(%rsp)
-        cfi_offset_rel_rsp (14, 1080)
-        movl      %eax, %r14d
-        movq      %r15, 1072(%rsp)
-        cfi_offset_rel_rsp (15, 1072)
-        cfi_remember_state
-
-.LBL_2_6:
-        btl       %r14d, %r13d
-        jc        .LBL_2_12
-
-.LBL_2_7:
-        lea       1(%r14), %esi
-        btl       %esi, %r13d
-        jc        .LBL_2_10
-
-.LBL_2_8:
-        incb      %r12b
-        addl      $2, %r14d
-        cmpb      $16, %r12b
-        jb        .LBL_2_6
-
-        kmovw     1048(%rsp), %k4
-        kmovw     1040(%rsp), %k5
-        kmovw     1032(%rsp), %k6
-        kmovw     1024(%rsp), %k7
-        vmovups   960(%rsp), %zmm16
-        vmovups   896(%rsp), %zmm17
-        vmovups   832(%rsp), %zmm18
-        vmovups   768(%rsp), %zmm19
-        vmovups   704(%rsp), %zmm20
-        vmovups   640(%rsp), %zmm21
-        vmovups   576(%rsp), %zmm22
-        vmovups   512(%rsp), %zmm23
-        vmovups   448(%rsp), %zmm24
-        vmovups   384(%rsp), %zmm25
-        vmovups   320(%rsp), %zmm26
-        vmovups   256(%rsp), %zmm27
-        vmovups   192(%rsp), %zmm28
-        vmovups   128(%rsp), %zmm29
-        vmovups   64(%rsp), %zmm30
-        vmovups   (%rsp), %zmm31
-        vmovups   1216(%rsp), %zmm1
-        movq      1064(%rsp), %rsi
-        movq      1056(%rsp), %rdi
-        movq      1096(%rsp), %r12
-        cfi_restore (%r12)
-        movq      1088(%rsp), %r13
-        cfi_restore (%r13)
-        movq      1080(%rsp), %r14
-        cfi_restore (%r14)
-        movq      1072(%rsp), %r15
-        cfi_restore (%r15)
-        jmp       .LBL_2_2
-
-.LBL_2_10:
-        cfi_restore_state
-        movzbl    %r12b, %r15d
-        vmovss    1156(%rsp,%r15,8), %xmm0
-        vzeroupper
-        vmovss    1156(%rsp,%r15,8), %xmm0
-
-        call      JUMPTARGET(logf)
-
-        vmovss    %xmm0, 1220(%rsp,%r15,8)
-        jmp       .LBL_2_8
-
-.LBL_2_12:
-        movzbl    %r12b, %r15d
-        vmovss    1152(%rsp,%r15,8), %xmm0
-        vzeroupper
-        vmovss    1152(%rsp,%r15,8), %xmm0
-
-        call      JUMPTARGET(logf)
-
-        vmovss    %xmm0, 1216(%rsp,%r15,8)
-        jmp       .LBL_2_7
-
+	/* ALGORITHM DESCRIPTION:
+	   if mantissa_x<4/3
+        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)
+
+	   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.  */
+	vmovups	LOCAL_DATA(_iBrkValue)(%rip), %zmm4
+	vmovups	LOCAL_DATA(_sPoly_7)(%rip), %zmm8
+
+	/* check for working range, set special argument mask
+	   (denormals/zero/Inf/NaN).  */
+	vmovups	COMMON_DATA(_NotiOffExpoMask)(%rip), %zmm3
+	vpsubd	%zmm3, %zmm0, %zmm1
+
+	/* reduction: compute r,n.  */
+	vpsubd	%zmm4, %zmm0, %zmm2
+	vpcmpd	$2, LOCAL_DATA_UNALIGNED(_iLoRange)(%rip){1to16}, %zmm1, %k0
+
+	/* exponent_x (mantissa_x<4/3),
+	   or exponent_x+1 (mantissa_x>4/3).  */
+	vpsrad	$23, %zmm2, %zmm5
+	vpandnd	%zmm2, %zmm3, %zmm3
+
+	/* mantissa_x (mantissa_x<4/3),
+	   or 0.5 mantissa_x (mantissa_x>4/3).  */
+	vpaddd	%zmm4, %zmm3, %zmm7
+
+	/* reduced argument R.  */
+	vsubps	COMMON_DATA(_OneF)(%rip), %zmm7, %zmm9
+
+	/* polynomial evaluation starts here.  */
+	vfmadd213ps LOCAL_DATA(_sPoly_6)(%rip), %zmm9, %zmm8
+	vfmadd213ps LOCAL_DATA(_sPoly_5)(%rip), %zmm9, %zmm8
+	vfmadd213ps LOCAL_DATA(_sPoly_4)(%rip), %zmm9, %zmm8
+	vfmadd213ps LOCAL_DATA(_sPoly_3)(%rip), %zmm9, %zmm8
+	vfmadd213ps LOCAL_DATA(_sPoly_2)(%rip), %zmm9, %zmm8
+	vfmadd213ps COMMON_DATA(_Neg5F)(%rip), %zmm9, %zmm8
+	vmulps	%zmm9, %zmm8, %zmm10
+
+	/* polynomial evaluation end.  */
+	vfmadd213ps %zmm9, %zmm9, %zmm10
+	vcvtdq2ps {rn-sae}, %zmm5, %zmm1
+	kmovw	%k0, %ecx
+	/* final reconstruction: add exponent_value
+	   log2 to polynomial result.  */
+	vfmadd132ps LOCAL_DATA(_sLn2)(%rip), %zmm10, %zmm1
+	/* Branch to process special inputs.  */
+	testl	%ecx, %ecx
+	jne	L(SPECIAL_VALUES_BRANCH)
+
+	vmovaps	%zmm1, %zmm0
+	ret
+
+	/* Cold case. edx has 1s where there was a special value that
+	   needs to be handled by a tanf call. Optimize for code size
+	   moreso than speed here.  */
+L(SPECIAL_VALUES_BRANCH):
+	/* Use r13 to save/restore the stack. This allows us to use rbp
+	   as callee save register saving code size.  */
+	pushq	%r13
+	cfi_def_cfa (rsp, 16)
+	/* Need to callee save registers to preserve state across tanf
+	   calls.  */
+	pushq	%rbx
+	cfi_def_cfa (rsp, 24)
+	pushq	%rbp
+	cfi_def_cfa (rsp, 32)
+	movq	%rsp, %r13
+	cfi_def_cfa (r13, 32)
+
+	/* Align stack and make room for 2x zmm vectors.  */
+	andq	$-64, %rsp
+	addq	$-128, %rsp
+
+	/* Save origional input.  */
+	vmovaps	%zmm0, 64(%rsp)
+	/* Save all already computed inputs.  */
+	vmovaps	%zmm1, (%rsp)
+
+	vzeroupper
+
+	/* edx has 1s where there was a special value that needs to be
+	   handled by a tanf call.  */
+	movl	%ecx, %ebx
+L(SPECIAL_VALUES_LOOP):
+
+	/* use rbp as index for special value that is saved across calls
+	   to tanf. We technically don't need a callee save register
+	   here as offset to rsp is always [0, 56] so we can restore
+	   rsp by realigning to 64. Essentially the tradeoff is 1 extra
+	   save/restore vs 2 extra instructions in the loop. Realigning
+	   also costs more code size.  */
+	xorl	%ebp, %ebp
+	tzcntl	%ebx, %ebp
+
+	/* Scalar math fucntion call to process special input.  */
+	movss	64(%rsp, %rbp, 4), %xmm0
+	call	logf@PLT
+
+	/* No good way to avoid the store-forwarding fault this will
+	   cause on return. `lfence` avoids the SF fault but at greater
+	   cost as it serialized stack/callee save restoration.  */
+	movss	%xmm0, (%rsp, %rbp, 4)
+
+	blsrl	%ebx, %ebx
+	jnz	L(SPECIAL_VALUES_LOOP)
+
+
+	/* All results have been written to 64(%rsp).  */
+	vmovaps	(%rsp), %zmm0
+	/* Restore rsp.  */
+	movq	%r13, %rsp
+	cfi_def_cfa (rsp, 32)
+	/* Restore callee save registers.  */
+	popq	%rbp
+	cfi_def_cfa (rsp, 24)
+	popq	%rbx
+	cfi_def_cfa (rsp, 16)
+	popq	%r13
+	ret
 END (_ZGVeN16v_logf_skx)
+
+strong_alias (_ZGVeN16v_logf_skx, _ZGVeN16v_logf_knl)
+
+	.section .rodata.evex512, "a"
+	.align	64
+
+	/* Data table for vector implementations of function logf. The
+	   table may contain polynomial, reduction, lookup coefficients
+	   and other coefficients obtained through different methods of
+	   research and experimental work.  */
+LOCAL_DATA_NAME_UNALIGNED:
+	float_block (LOCAL_DATA_NAME_UNALIGNED, _iLoRange, 0x00ffffff)
+
+	.type	LOCAL_DATA_NAME_UNALIGNED, @object
+	.size	LOCAL_DATA_NAME_UNALIGNED, .-LOCAL_DATA_NAME_UNALIGNED
+
+LOCAL_DATA_NAME:
+	DATA_VEC (LOCAL_DATA_NAME, _iBrkValue, 0x3f2aaaab)
+	DATA_VEC (LOCAL_DATA_NAME, _sPoly_7, 0xbe1b6a22)
+	DATA_VEC (LOCAL_DATA_NAME, _sPoly_6, 0x3e2db86b)
+	DATA_VEC (LOCAL_DATA_NAME, _sPoly_5, 0xbe289358)
+	DATA_VEC (LOCAL_DATA_NAME, _sPoly_4, 0x3e4afb81)
+	DATA_VEC (LOCAL_DATA_NAME, _sPoly_3, 0xbe80061d)
+	DATA_VEC (LOCAL_DATA_NAME, _sPoly_2, 0x3eaaaee7)
+	DATA_VEC (LOCAL_DATA_NAME, _sLn2, 0x3f317218)
+
+	.type	LOCAL_DATA_NAME, @object
+	.size	LOCAL_DATA_NAME, .-LOCAL_DATA_NAME