From 001b09a6a2176b22bd7524a8329950c1ef98f06f Mon Sep 17 00:00:00 2001 From: Rajalakshmi Srinivasaraghavan Date: Fri, 23 Jun 2017 10:43:31 +0530 Subject: 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. --- sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile | 2 +- .../powerpc64/fpu/multiarch/s_llroundf-ppc64.S | 32 +++++++++++++++ .../powerpc/powerpc64/fpu/multiarch/s_llroundf.c | 46 ++++++++++++++++++++++ 3 files changed, 79 insertions(+), 1 deletion(-) create mode 100644 sysdeps/powerpc/powerpc64/fpu/multiarch/s_llroundf-ppc64.S create mode 100644 sysdeps/powerpc/powerpc64/fpu/multiarch/s_llroundf.c (limited to 'sysdeps/powerpc/powerpc64/fpu/multiarch') diff --git a/sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile b/sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile index 317a988854..d6f14f360a 100644 --- a/sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile +++ b/sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile @@ -24,7 +24,7 @@ libm-sysdep_routines += s_isnan-power7 s_isnan-power6x s_isnan-power6 \ s_modff-power5+ s_modff-ppc64 e_hypot-ppc64 \ e_hypot-power7 e_hypotf-ppc64 e_hypotf-power7 \ s_isnan-power8 s_isinf-power8 s_finite-power8 \ - s_llrint-power8 s_llround-power8 \ + s_llrint-power8 s_llround-power8 s_llroundf-ppc64 \ e_expf-power8 e_expf-ppc64 \ s_sinf-ppc64 s_sinf-power8 \ s_cosf-ppc64 s_cosf-power8 diff --git a/sysdeps/powerpc/powerpc64/fpu/multiarch/s_llroundf-ppc64.S b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_llroundf-ppc64.S new file mode 100644 index 0000000000..26d08a2665 --- /dev/null +++ b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_llroundf-ppc64.S @@ -0,0 +1,32 @@ +/* llroundf(). PowerPC64 default version. + 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 + . */ + +#include +#include + +#undef weak_alias +#define weak_alias(a,b) +#undef strong_alias +#define strong_alias(a,b) +#undef compat_symbol +#define compat_symbol(a,b,c,d) + +#define __llroundf __llroundf_ppc64 +#define __lroundf __lroundf_ppc64 + +#include diff --git a/sysdeps/powerpc/powerpc64/fpu/multiarch/s_llroundf.c b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_llroundf.c new file mode 100644 index 0000000000..1e34b5dbc8 --- /dev/null +++ b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_llroundf.c @@ -0,0 +1,46 @@ +/* Multiple versions of llroundf. + 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 + . */ +/* Redefine lroundf/__lroundf so that the compiler won't complain about + the type mismatch with the IFUNC selector in strong_alias below. */ +#define lroundf __hidden_lroundf +#define __lroundf __hidden___lroundf + +#include +#undef lroundf +#undef __lroundf +#include "init-arch.h" + +extern __typeof (__llroundf) __llroundf_ppc64 attribute_hidden; +extern __typeof (__llroundf) __llround_power6x attribute_hidden; +extern __typeof (__llroundf) __llround_power8 attribute_hidden; + +/* The ppc64 ABI passes float and double parameters in 64bit floating point + registers (at least up to a point) as IEEE binary64 format, so effectively + of "double" type. Both l[l]round and l[l]roundf return long type. So these + functions have identical signatures and functionality, and can use a + single implementation. */ +libc_ifunc (__llroundf, + (hwcap2 & PPC_FEATURE2_ARCH_2_07) + ? __llround_power8 : + (hwcap & PPC_FEATURE_POWER6_EXT) + ? __llround_power6x + : __llroundf_ppc64); + +weak_alias (__llroundf, llroundf) +strong_alias (__llroundf, __lroundf) +weak_alias (__lroundf, lroundf) -- cgit 1.4.1