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author | H.J. Lu <hjl.tools@gmail.com> | 2017-10-22 08:11:15 -0700 |
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committer | H.J. Lu <hjl.tools@gmail.com> | 2017-10-22 08:12:41 -0700 |
commit | 5313581cb52fd5d3d2cf222ddb6f8f86f090974f (patch) | |
tree | e2ec5d944c1089cec1de29c5c72c3fb600a8c3fb /sysdeps/i386/i686/fpu | |
parent | 6089a3ee24cede17e9443aef0aa72fa1a0ba1548 (diff) | |
download | glibc-5313581cb52fd5d3d2cf222ddb6f8f86f090974f.tar.gz glibc-5313581cb52fd5d3d2cf222ddb6f8f86f090974f.tar.xz glibc-5313581cb52fd5d3d2cf222ddb6f8f86f090974f.zip |
i386: Replace assembly versions of e_powf with generic e_powf.c
This patch replaces i386 assembly versions of e_powf with generic e_powf.c. For workload-spec2017.wrf, on Nehalem, it improves performance by: Before After Improvement reciprocal-throughput 230.855 78.3358 194% latency 231.685 94.1259 146% On Skylake, it improves performance by: Before After Improvement reciprocal-throughput 239.858 47.4713 405% latency 247.57 93.8798 163% On IvyBridge with --disable-multi-arch, it improves performance by: Before After Improvement reciprocal-throughput 269.078 63.3758 324% latency 271.473 102.091 165% * sysdeps/i386/fpu/e_powf.S: Removed. * sysdeps/i386/fpu/e_powf_log2_data.c: Likewise. * sysdeps/i386/fpu/w_powf.c: Likewise. * sysdeps/i386/fpu/libm-test-ulps: Updated for generic e_powf.c. * sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Likewise. * sysdeps/i386/i686/fpu/multiarch/Makefile (libm-sysdep_routines): Add e_powf-sse2. (CFLAGS-e_powf-sse2.c): New. * sysdeps/i386/i686/fpu/multiarch/e_powf-sse2.c: New file. * sysdeps/i386/i686/fpu/multiarch/e_powf.c: Likewise.
Diffstat (limited to 'sysdeps/i386/i686/fpu')
-rw-r--r-- | sysdeps/i386/i686/fpu/multiarch/Makefile | 3 | ||||
-rw-r--r-- | sysdeps/i386/i686/fpu/multiarch/e_powf-sse2.c | 3 | ||||
-rw-r--r-- | sysdeps/i386/i686/fpu/multiarch/e_powf.c | 43 | ||||
-rw-r--r-- | sysdeps/i386/i686/fpu/multiarch/libm-test-ulps | 18 |
4 files changed, 60 insertions, 7 deletions
diff --git a/sysdeps/i386/i686/fpu/multiarch/Makefile b/sysdeps/i386/i686/fpu/multiarch/Makefile index eee3b8b1fd..c0fa9761d3 100644 --- a/sysdeps/i386/i686/fpu/multiarch/Makefile +++ b/sysdeps/i386/i686/fpu/multiarch/Makefile @@ -1,9 +1,10 @@ ifeq ($(subdir),math) libm-sysdep_routines += e_exp2f-sse2 e_expf-sse2 e_logf-sse2 e_log2f-sse2 \ - s_sinf-sse2 s_cosf-sse2 s_sincosf-sse2 + e_powf-sse2 s_sinf-sse2 s_cosf-sse2 s_sincosf-sse2 CFLAGS-e_exp2f-sse2.c = -msse2 -mfpmath=sse CFLAGS-e_expf-sse2.c = -msse2 -mfpmath=sse CFLAGS-e_log2f-sse2.c = -msse2 -mfpmath=sse CFLAGS-e_logf-sse2.c = -msse2 -mfpmath=sse +CFLAGS-e_powf-sse2.c = -msse2 -mfpmath=sse endif diff --git a/sysdeps/i386/i686/fpu/multiarch/e_powf-sse2.c b/sysdeps/i386/i686/fpu/multiarch/e_powf-sse2.c new file mode 100644 index 0000000000..c56f6ee89f --- /dev/null +++ b/sysdeps/i386/i686/fpu/multiarch/e_powf-sse2.c @@ -0,0 +1,3 @@ +#define __powf __powf_sse2 + +#include <sysdeps/ieee754/flt-32/e_powf.c> diff --git a/sysdeps/i386/i686/fpu/multiarch/e_powf.c b/sysdeps/i386/i686/fpu/multiarch/e_powf.c new file mode 100644 index 0000000000..4dc4c87326 --- /dev/null +++ b/sysdeps/i386/i686/fpu/multiarch/e_powf.c @@ -0,0 +1,43 @@ +/* Multiple versions of powf. + Copyright (C) 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/>. */ + +#define powf __redirect_powf +#define __DECL_SIMD___redirect_powf +#include <math.h> +#undef powf + +#define SYMBOL_NAME powf +#include "ifunc-sse2.h" + +libc_ifunc_redirected (__redirect_powf, __powf, IFUNC_SELECTOR ()); + +#ifdef SHARED +__hidden_ver1 (__powf_ia32, __GI___powf, __redirect_powf) + __attribute__ ((visibility ("hidden"))); + +# include <shlib-compat.h> +versioned_symbol (libm, __powf, powf, GLIBC_2_27); +#else +weak_alias (__powf, powf) +#endif + +strong_alias (__powf, __ieee754_powf) +strong_alias (__powf, __powf_finite) + +#define __powf __powf_ia32 +#include <sysdeps/ieee754/flt-32/e_powf.c> diff --git a/sysdeps/i386/i686/fpu/multiarch/libm-test-ulps b/sysdeps/i386/i686/fpu/multiarch/libm-test-ulps index b5d74df580..26d90ec636 100644 --- a/sysdeps/i386/i686/fpu/multiarch/libm-test-ulps +++ b/sysdeps/i386/i686/fpu/multiarch/libm-test-ulps @@ -2370,24 +2370,30 @@ ldouble: 1 Function: "pow_downward": double: 1 +float: 1 float128: 2 idouble: 1 +ifloat: 1 ifloat128: 2 ildouble: 4 ldouble: 4 Function: "pow_towardzero": double: 1 +float: 1 float128: 2 idouble: 1 +ifloat: 1 ifloat128: 2 ildouble: 4 ldouble: 4 Function: "pow_upward": double: 1 +float: 1 float128: 2 idouble: 1 +ifloat: 1 ifloat128: 2 ildouble: 4 ldouble: 4 @@ -2577,30 +2583,30 @@ ldouble: 5 Function: "tgamma_downward": double: 3 -float: 4 +float: 5 float128: 5 idouble: 3 -ifloat: 4 +ifloat: 5 ifloat128: 5 ildouble: 5 ldouble: 5 Function: "tgamma_towardzero": double: 4 -float: 4 +float: 5 float128: 5 idouble: 4 -ifloat: 4 +ifloat: 5 ifloat128: 5 ildouble: 5 ldouble: 5 Function: "tgamma_upward": double: 4 -float: 4 +float: 6 float128: 4 idouble: 4 -ifloat: 4 +ifloat: 6 ifloat128: 4 ildouble: 5 ldouble: 5 |