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[v4] MIPSr6/math: Use builtin fma and fmaf

Message ID 20240614232645.64298-1-syq@debian.org
State New
Headers show
Series [v4] MIPSr6/math: Use builtin fma and fmaf | expand

Commit Message

YunQiang Su June 14, 2024, 11:26 p.m. UTC 
From: YunQiang Su <syq@gcc.gnu.org>

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>
---
 sysdeps/mips/fpu/math-use-builtins-fma.h | 35 ++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 sysdeps/mips/fpu/math-use-builtins-fma.h
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Patch

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..507f42141c
--- /dev/null
+++ b/sysdeps/mips/fpu/math-use-builtins-fma.h
@@ -0,0 +1,35 @@ 
+/* Test that malloc uses mmap when sbrk or brk fails.
+   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.  */
+
+#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