From 9d0e9c8a138fe25e58fdfc21c2e000425579d9a8 Mon Sep 17 00:00:00 2001 From: YunQiang Su Date: Fri, 21 Jun 2024 00:07:56 +0800 Subject: [PATCH] MIPSr6/math: Use builtin fma and fmaf MIPSr6 has MADDF.s/MADDF.d instructions, which are fused. In MIPS ISA, double support can be subsetted. Only FMAF is enabled for this case. * sysdeps/mips/fpu/math-use-builtins-fma.h Signed-off-by: YunQiang Su Reviewed-by: Adhemerval Zanella --- sysdeps/mips/fpu/math-use-builtins-fma.h | 36 ++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 sysdeps/mips/fpu/math-use-builtins-fma.h diff --git a/sysdeps/mips/fpu/math-use-builtins-fma.h b/sysdeps/mips/fpu/math-use-builtins-fma.h new file mode 100644 index 0000000000..57108f968e --- /dev/null +++ b/sysdeps/mips/fpu/math-use-builtins-fma.h @@ -0,0 +1,36 @@ +/* Copyright (C) 2024 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 + . */ + +/* MIPSr6 has MADDF.s/MADDF.d instructions, which are fused. In MIPS + ISA, double support can be subsetted. Only FMAF is enabled for this + case. */ + +#include + +#if __mips_isa_rev >= 6 +# ifdef __mips_single_float +# define USE_FMA_BUILTIN 0 +# else +# define USE_FMA_BUILTIN 1 +# endif +# define USE_FMAF_BUILTIN 1 +#else +# define USE_FMA_BUILTIN 0 +# define USE_FMAF_BUILTIN 0 +#endif +#define USE_FMAL_BUILTIN 0 +#define USE_FMAF128_BUILTIN 0