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author | Adhemerval Zanella <azanella@linux.vnet.ibm.com> | 2014-02-27 09:46:46 -0600 |
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committer | Adhemerval Zanella <azanella@linux.vnet.ibm.com> | 2014-02-27 12:58:33 -0600 |
commit | cac626d60a863e48ab75417064984769e58c5719 (patch) | |
tree | 72cfaf38f3f0ae48808e8a088526c12592dc2feb /sysdeps/powerpc/powerpc64/fpu/multiarch | |
parent | 4393fc119c34e97519b9b7a4fc94066b283be452 (diff) | |
download | glibc-cac626d60a863e48ab75417064984769e58c5719.tar.gz glibc-cac626d60a863e48ab75417064984769e58c5719.tar.xz glibc-cac626d60a863e48ab75417064984769e58c5719.zip |
PowerPC: Optimized finite/finitef for POWER8
This patch add a optimized finite/finitef implementation for POWER8 using the new Move From VSR Doubleword instruction to gains some cycles from FP to GRP register move.
Diffstat (limited to 'sysdeps/powerpc/powerpc64/fpu/multiarch')
4 files changed, 45 insertions, 6 deletions
diff --git a/sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile b/sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile index abbf7d059e..52bbd4bb90 100644 --- a/sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile +++ b/sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile @@ -5,7 +5,7 @@ sysdep_routines += s_isnan-power7 s_isnan-power6x s_isnan-power6 \ s_finitef-ppc64 s_isinff-ppc64 s_isinf-power7 \ s_isinf-ppc64 s_modf-power5+ s_modf-ppc64 \ s_modff-power5+ s_modff-ppc64 s_isnan-power8 \ - s_isinf-power8 + s_isinf-power8 s_finite-power8 libm-sysdep_routines += s_isnan-power7 s_isnan-power6x s_isnan-power6 \ s_isnan-power5 s_isnan-ppc64 s_llround-power6x \ @@ -23,7 +23,7 @@ libm-sysdep_routines += s_isnan-power7 s_isnan-power6x s_isnan-power6 \ s_logbl-ppc64 s_modf-power5+ s_modf-ppc64 \ 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_isnan-power8 s_isinf-power8 s_finite-power8 CFLAGS-s_logbf-power7.c = -mcpu=power7 CFLAGS-s_logbl-power7.c = -mcpu=power7 diff --git a/sysdeps/powerpc/powerpc64/fpu/multiarch/s_finite-power8.S b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_finite-power8.S new file mode 100644 index 0000000000..3b9071f97e --- /dev/null +++ b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_finite-power8.S @@ -0,0 +1,33 @@ +/* isnan(). PowerPC64/POWER7 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> +#include <math_ldbl_opt.h> + +#undef hidden_def +#define hidden_def(name) +#undef weak_alias +#define weak_alias(name, alias) +#undef strong_alias +#define strong_alias(name, alias) +#undef compat_symbol +#define compat_symbol(lib, name, symbol, ver) + +#define __finite __finite_power8 + +#include <sysdeps/powerpc/powerpc64/power8/fpu/s_finite.S> diff --git a/sysdeps/powerpc/powerpc64/fpu/multiarch/s_finite.c b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_finite.c index f79a93eab5..b9e908df58 100644 --- a/sysdeps/powerpc/powerpc64/fpu/multiarch/s_finite.c +++ b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_finite.c @@ -23,10 +23,13 @@ extern __typeof (__finite) __finite_ppc64 attribute_hidden; extern __typeof (__finite) __finite_power7 attribute_hidden; +extern __typeof (__finite) __finite_power8 attribute_hidden; libc_ifunc (__finite, - (hwcap & PPC_FEATURE_ARCH_2_06) - ? __finite_power7 + (hwcap2 & PPC_FEATURE2_ARCH_2_07) + ? __finite_power8 : + (hwcap & PPC_FEATURE_ARCH_2_06) + ? __finite_power7 : __finite_ppc64); weak_alias (__finite, finite) diff --git a/sysdeps/powerpc/powerpc64/fpu/multiarch/s_finitef.c b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_finitef.c index a7243b51aa..30b34bccc9 100644 --- a/sysdeps/powerpc/powerpc64/fpu/multiarch/s_finitef.c +++ b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_finitef.c @@ -23,10 +23,13 @@ extern __typeof (__finitef) __finitef_ppc64 attribute_hidden; /* The double-precision version also works for single-precision. */ extern __typeof (__finitef) __finite_power7 attribute_hidden; +extern __typeof (__finitef) __finite_power8 attribute_hidden; libc_ifunc (__finitef, - (hwcap & PPC_FEATURE_ARCH_2_06) - ? __finite_power7 + (hwcap2 & PPC_FEATURE2_ARCH_2_07) + ? __finite_power8 : + (hwcap & PPC_FEATURE_ARCH_2_06) + ? __finite_power7 : __finitef_ppc64); weak_alias (__finitef, finitef) |