From 66807aebadc4a8cf62a9593ab3f714f971366907 Mon Sep 17 00:00:00 2001 From: Raphael Moreira Zinsly Date: Fri, 20 Mar 2020 17:52:28 -0300 Subject: [PATCH] powerpc: Add support for fmaf128() in hardware Adds a POWER9 version of fmaf128 that uses the xsmaddqp instruction. Co-authored-by: Tulio Magno Quites Machado Filho Reviewed-by: Adhemerval Zanella --- .../powerpc64/le/fpu/multiarch/Makefile | 6 +++- .../le/fpu/multiarch/s_fmaf128-power9.c | 26 ++++++++++++++ .../le/fpu/multiarch/s_fmaf128-ppc64.c | 24 +++++++++++++ .../powerpc64/le/fpu/multiarch/s_fmaf128.c | 36 +++++++++++++++++++ .../powerpc64/le/power9/fpu/s_fmaf128.c | 36 +++++++++++++++++++ 5 files changed, 127 insertions(+), 1 deletion(-) create mode 100644 sysdeps/powerpc/powerpc64/le/fpu/multiarch/s_fmaf128-power9.c create mode 100644 sysdeps/powerpc/powerpc64/le/fpu/multiarch/s_fmaf128-ppc64.c create mode 100644 sysdeps/powerpc/powerpc64/le/fpu/multiarch/s_fmaf128.c create mode 100644 sysdeps/powerpc/powerpc64/le/power9/fpu/s_fmaf128.c diff --git a/sysdeps/powerpc/powerpc64/le/fpu/multiarch/Makefile b/sysdeps/powerpc/powerpc64/le/fpu/multiarch/Makefile index c6ca872a4b..6fb9eb3a98 100644 --- a/sysdeps/powerpc/powerpc64/le/fpu/multiarch/Makefile +++ b/sysdeps/powerpc/powerpc64/le/fpu/multiarch/Makefile @@ -1,5 +1,9 @@ ifeq ($(subdir),math) -libm-sysdep_routines += w_sqrtf128-power9 w_sqrtf128-ppc64le +libm-sysdep_routines += s_fmaf128-ppc64 s_fmaf128-power9 \ + w_sqrtf128-power9 w_sqrtf128-ppc64le + +CFLAGS-s_fmaf128-ppc64.c += -mfloat128 $(no-gnu-attribute-CFLAGS) +CFLAGS-s_fmaf128-power9.c += -mfloat128 -mcpu=power9 $(no-gnu-attribute-CFLAGS) CFLAGS-w_sqrtf128-ppc64le.c += -mfloat128 $(no-gnu-attribute-CFLAGS) CFLAGS-w_sqrtf128-power9.c += -mfloat128 -mcpu=power9 $(no-gnu-attribute-CFLAGS) diff --git a/sysdeps/powerpc/powerpc64/le/fpu/multiarch/s_fmaf128-power9.c b/sysdeps/powerpc/powerpc64/le/fpu/multiarch/s_fmaf128-power9.c new file mode 100644 index 0000000000..8df77ceade --- /dev/null +++ b/sysdeps/powerpc/powerpc64/le/fpu/multiarch/s_fmaf128-power9.c @@ -0,0 +1,26 @@ +/* __fmaf128() PowerPC64LE POWER9 version. + Copyright (C) 2020 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 + +#undef libm_alias_float128 +#define libm_alias_float128(a, b) + +#define __fmaf128 __fmaf128_power9 + +#include diff --git a/sysdeps/powerpc/powerpc64/le/fpu/multiarch/s_fmaf128-ppc64.c b/sysdeps/powerpc/powerpc64/le/fpu/multiarch/s_fmaf128-ppc64.c new file mode 100644 index 0000000000..7374a799af --- /dev/null +++ b/sysdeps/powerpc/powerpc64/le/fpu/multiarch/s_fmaf128-ppc64.c @@ -0,0 +1,24 @@ +/* __fmaf128() PowerPC64LE version. + Copyright (C) 2020 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 + . */ + +#undef weak_alias +#define weak_alias(a, b) + +#define __fmaf128 __fmaf128_ppc64 + +#include diff --git a/sysdeps/powerpc/powerpc64/le/fpu/multiarch/s_fmaf128.c b/sysdeps/powerpc/powerpc64/le/fpu/multiarch/s_fmaf128.c new file mode 100644 index 0000000000..3a370950f9 --- /dev/null +++ b/sysdeps/powerpc/powerpc64/le/fpu/multiarch/s_fmaf128.c @@ -0,0 +1,36 @@ +/* Multiple versions of fmaf128. + Copyright (C) 2020 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 + +#define fmaf128 __redirect_fmaf128 +#include +#undef fmaf128 + +#include +#include "init-arch.h" + +extern __typeof (__redirect_fmaf128) __fmaf128_ppc64 attribute_hidden; +extern __typeof (__redirect_fmaf128) __fmaf128_power9 attribute_hidden; + +libc_ifunc_redirected (__redirect_fmaf128, __fmaf128, + (hwcap2 & PPC_FEATURE2_HAS_IEEE128) + ? __fmaf128_power9 + : __fmaf128_ppc64); + +libm_alias_float128 (__fma, fma) diff --git a/sysdeps/powerpc/powerpc64/le/power9/fpu/s_fmaf128.c b/sysdeps/powerpc/powerpc64/le/power9/fpu/s_fmaf128.c new file mode 100644 index 0000000000..f02e810fb9 --- /dev/null +++ b/sysdeps/powerpc/powerpc64/le/power9/fpu/s_fmaf128.c @@ -0,0 +1,36 @@ +/* Compute x * y + z as a ternary operation for _Float128. POWER9 version. + Copyright (C) 2020 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. + + In addition to the permissions in the GNU Lesser General Public + License, the Free Software Foundation gives you unlimited + permission to link the compiled version of this file into + combinations with other programs, and to distribute those + combinations without any restriction coming from the use of this + file. (The Lesser General Public License restrictions do apply in + other respects; for example, they cover modification of the file, + and distribution when not linked into a combine executable.) + + 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 + +__float128 +__fmaf128 (__float128 x, __float128 y, __float128 z) +{ + return x * y + z; +} + +libm_alias_float128 (__fma, fma) -- 2.43.5