powerpc: Add optimized version of [l]lroundf
This patch makes use of optimized double version of llround for single precision as both the versions return [long] long type.
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Rajalakshmi Srinivasaraghavan
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17
ChangeLog
17
ChangeLog
@ -1,3 +1,20 @@
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2017-06-23 Rajalakshmi Srinivasaraghavan <raji@linux.vnet.ibm.com>
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* sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile
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(libm-sysdep_routines): Add s_llroundf-ppc64.
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* sysdeps/powerpc/powerpc64/power5+fpu/s_llround.S
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(__llroundf): Define as strong alias of __llround.
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(llroundf): Define as weak alias of __llround.
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(__lroundf): Define as strong alias of __llround.
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(lroundf): Define as weak alias of __llround.
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* sysdeps/powerpc/powerpc64/power6x/fpu/s_llround.S: Likewise.
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* sysdeps/powerpc/powerpc64/power8/fpu/s_llround.S: Likewise.
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* sysdeps/powerpc/powerpc64/fpu/multiarch/s_llroundf-ppc64.S: New file.
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* sysdeps/powerpc/powerpc64/fpu/multiarch/s_llroundf.c: Likewise.
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* sysdeps/powerpc/powerpc64/power5+/fpu/s_llroundf.S: Likewise.
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* sysdeps/powerpc/powerpc64/power6x/fpu/s_llroundf.S: Likewise.
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* sysdeps/powerpc/powerpc64/power8/fpu/s_llroundf.S: Likewise.
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2017-06-22 Joseph Myers <joseph@codesourcery.com>
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* sysdeps/ieee754/ldbl-96/bits/iscanonical.h
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@ -24,7 +24,7 @@ libm-sysdep_routines += s_isnan-power7 s_isnan-power6x s_isnan-power6 \
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s_modff-power5+ s_modff-ppc64 e_hypot-ppc64 \
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e_hypot-power7 e_hypotf-ppc64 e_hypotf-power7 \
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s_isnan-power8 s_isinf-power8 s_finite-power8 \
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s_llrint-power8 s_llround-power8 \
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s_llrint-power8 s_llround-power8 s_llroundf-ppc64 \
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e_expf-power8 e_expf-ppc64 \
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s_sinf-ppc64 s_sinf-power8 \
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s_cosf-ppc64 s_cosf-power8
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32
sysdeps/powerpc/powerpc64/fpu/multiarch/s_llroundf-ppc64.S
Normal file
32
sysdeps/powerpc/powerpc64/fpu/multiarch/s_llroundf-ppc64.S
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/* llroundf(). PowerPC64 default version.
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Copyright (C) 2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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#include <math_ldbl_opt.h>
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#undef weak_alias
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#define weak_alias(a,b)
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#undef strong_alias
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#define strong_alias(a,b)
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#undef compat_symbol
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#define compat_symbol(a,b,c,d)
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#define __llroundf __llroundf_ppc64
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#define __lroundf __lroundf_ppc64
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#include <sysdeps/powerpc/powerpc64/fpu/s_llroundf.S>
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46
sysdeps/powerpc/powerpc64/fpu/multiarch/s_llroundf.c
Normal file
46
sysdeps/powerpc/powerpc64/fpu/multiarch/s_llroundf.c
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@ -0,0 +1,46 @@
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/* Multiple versions of llroundf.
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Copyright (C) 2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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/* Redefine lroundf/__lroundf so that the compiler won't complain about
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the type mismatch with the IFUNC selector in strong_alias below. */
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#define lroundf __hidden_lroundf
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#define __lroundf __hidden___lroundf
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#include <math.h>
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#undef lroundf
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#undef __lroundf
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#include "init-arch.h"
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extern __typeof (__llroundf) __llroundf_ppc64 attribute_hidden;
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extern __typeof (__llroundf) __llround_power6x attribute_hidden;
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extern __typeof (__llroundf) __llround_power8 attribute_hidden;
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/* The ppc64 ABI passes float and double parameters in 64bit floating point
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registers (at least up to a point) as IEEE binary64 format, so effectively
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of "double" type. Both l[l]round and l[l]roundf return long type. So these
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functions have identical signatures and functionality, and can use a
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single implementation. */
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libc_ifunc (__llroundf,
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(hwcap2 & PPC_FEATURE2_ARCH_2_07)
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? __llround_power8 :
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(hwcap & PPC_FEATURE_POWER6_EXT)
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? __llround_power6x
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: __llroundf_ppc64);
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weak_alias (__llroundf, llroundf)
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strong_alias (__llroundf, __lroundf)
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weak_alias (__lroundf, lroundf)
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@ -45,6 +45,13 @@ ENTRY_TOCLESS (__llround, 4)
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strong_alias (__llround, __lround)
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weak_alias (__llround, llround)
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weak_alias (__lround, lround)
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/* The double version also works for single-precision as both float and
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double parameters are passed in 64bit FPRs and both versions are expected
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to return [long] long type. */
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strong_alias (__llround, __llroundf)
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weak_alias (__llround, llroundf)
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strong_alias (__lround, __lroundf)
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weak_alias (__lround, lroundf)
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#ifdef NO_LONG_DOUBLE
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weak_alias (__llround, llroundl)
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1
sysdeps/powerpc/powerpc64/power5+/fpu/s_llroundf.S
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1
sysdeps/powerpc/powerpc64/power5+/fpu/s_llroundf.S
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/* __lroundf is in s_llround.S. */
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@ -41,6 +41,13 @@ ENTRY_TOCLESS (__llround)
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strong_alias (__llround, __lround)
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weak_alias (__llround, llround)
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weak_alias (__lround, lround)
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/* The double version also works for single-precision as both float and
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double parameters are passed in 64bit FPRs and both versions are expected
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to return [long] long type. */
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strong_alias (__llround, __llroundf)
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weak_alias (__llround, llroundf)
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strong_alias (__lround, __lroundf)
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weak_alias (__lround, lroundf)
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#ifdef NO_LONG_DOUBLE
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weak_alias (__llround, llroundl)
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1
sysdeps/powerpc/powerpc64/power6x/fpu/s_llroundf.S
Normal file
1
sysdeps/powerpc/powerpc64/power6x/fpu/s_llroundf.S
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/* __lroundf is in s_llround.S. */
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@ -35,6 +35,13 @@ END (__llround)
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strong_alias (__llround, __lround)
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weak_alias (__llround, llround)
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weak_alias (__lround, lround)
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/* The double version also works for single-precision as both float and
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double parameters are passed in 64bit FPRs and both versions are expected
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to return [long] long type. */
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strong_alias (__llround, __llroundf)
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weak_alias (__llround, llroundf)
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strong_alias (__lround, __lroundf)
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weak_alias (__lround, lroundf)
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#ifdef NO_LONG_DOUBLE
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weak_alias (__llround, llroundl)
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1
sysdeps/powerpc/powerpc64/power8/fpu/s_llroundf.S
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1
sysdeps/powerpc/powerpc64/power8/fpu/s_llroundf.S
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/* __lroundf is in s_llround.S. */
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