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authorYunQiang Su <syq@gcc.gnu.org>2024-06-21 00:07:56 +0800
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2024-07-01 14:52:30 -0300
commit9d0e9c8a138fe25e58fdfc21c2e000425579d9a8 (patch)
treebea056bb5ca064f055f1a8ea6acfdd28ef27ec85 /sysdeps/mips
parent018f0fc3b818d4d1460a4e2384c24802504b1d20 (diff)
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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 <syq@gcc.gnu.org>
Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
Diffstat (limited to 'sysdeps/mips')
-rw-r--r--sysdeps/mips/fpu/math-use-builtins-fma.h36
1 files changed, 36 insertions, 0 deletions
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
+   <https://www.gnu.org/licenses/>.  */
+
+/* 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 <sysdep.h>
+
+#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