sparc: Use sqrt{f} builtin

It also enabled to use fsqrtd on sparc64.

Checked on sparcv9-linux-gnu and sparc64-linux-gnu.

sysdeps/sparc/fpu/math-use-builtins-sqrt.h

@@ -0,0 +1,4 @@
+#define USE_SQRT_BUILTIN 1
+#define USE_SQRTF_BUILTIN 1
+#define USE_SQRTL_BUILTIN 0
+#define USE_SQRTF128_BUILTIN 0

sysdeps/sparc/sparc32/e_sqrt.c

@@ -1,34 +0,0 @@
-/* Copyright (C) 1991-2020 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
-   <https://www.gnu.org/licenses/>.  */
-
-#include <errno.h>
-#include <math.h>
-#include <libm-alias-finite.h>
-
-#ifndef	__GNUC__
-  #error This file uses GNU C extensions; you must compile with GCC.
-#endif
-
-/* Return the square root of X.  */
-double
-__ieee754_sqrt (double x)
-{
-  register double result;
-  asm ("fsqrtd %1, %0" : "=f" (result) : "f" (x));
-  return result;
-}
-libm_alias_finite (__ieee754_sqrt, __sqrt)