POWER6/7 optimizations for copysign
This commit is contained in:
Luis Machado
Ulrich Drepper
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2010-06-15 Luis Machado <luisgpm@br.ibm.com>
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* sysdeps/powerpc/powerpc32/power6/fpu/s_copysign.S: New file.
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* sysdeps/powerpc/powerpc32/power6/fpu/s_copysignf.S: New file.
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* sysdeps/powerpc/powerpc64/power6/fpu/s_copysign.S: New file.
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* sysdeps/powerpc/powerpc64/power6/fpu/s_copysignf.S: New file.
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2010-07-09 Ulrich Drepper <drepper@redhat.com>
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* sysdeps/unix/sysv/linux/fpathconf.c (__fpathconf): Use __fcntl not
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/* copysign(). PowerPC32/POWER6 version.
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Copyright (C) 2010 Free Software Foundation, Inc.
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Contributed by Luis Machado <luisgpm@br.ibm.com>.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <sysdep.h>
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#include <math_ldbl_opt.h>
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/* double [f1] copysign (double [f1] x, double [f2] y);
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copysign(x,y) returns a value with the magnitude of x and
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with the sign bit of y. */
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.section ".text"
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.type __copysign, @function
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.machine power6
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EALIGN (__copysign, 4, 0)
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CALL_MCOUNT
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fcpsgn fp1,fp2,fp1
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blr
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END (__copysign)
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hidden_def (__copysign)
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weak_alias (__copysign, copysign)
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/* It turns out that the 'double' version will also always work for
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single-precision. */
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strong_alias (__copysign, __copysignf)
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hidden_def (__copysignf)
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weak_alias (__copysignf, copysignf)
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#ifdef NO_LONG_DOUBLE
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strong_alias (__copysign, __copysignl)
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weak_alias (__copysign, copysignl)
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#endif
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#ifndef IS_IN_libm
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# if LONG_DOUBLE_COMPAT(libc, GLIBC_2_0)
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compat_symbol (libc, __copysign, __copysignl, GLIBC_2_0);
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compat_symbol (libc, copysign, copysignl, GLIBC_2_0);
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# endif
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#endif
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@ -0,0 +1 @@
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/* This function uses the same code as s_copysign.S. */
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@ -0,0 +1,56 @@
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/* copysign(). PowerPC64/POWER6 version.
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Copyright (C) 2010 Free Software Foundation, Inc.
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Contributed by Luis Machado <luisgpm@br.ibm.com>.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <sysdep.h>
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#include <math_ldbl_opt.h>
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/* double [f1] copysign (double [f1] x, double [f2] y);
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copysign(x,y) returns a value with the magnitude of x and
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with the sign bit of y. */
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.section ".text"
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.type __copysign, @function
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.machine power6
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EALIGN (__copysign, 4, 0)
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CALL_MCOUNT 0
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fcpsgn fp1,fp2,fp1
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blr
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END (__copysign)
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hidden_def (__copysign)
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weak_alias (__copysign, copysign)
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/* It turns out that the 'double' version will also always work for
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single-precision. */
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strong_alias (__copysign, __copysignf)
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hidden_def (__copysignf)
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weak_alias (__copysignf, copysignf)
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#ifdef NO_LONG_DOUBLE
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strong_alias (__copysign, __copysignl)
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weak_alias (__copysign, copysignl)
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#endif
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#ifndef IS_IN_libm
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# if LONG_DOUBLE_COMPAT(libc, GLIBC_2_0)
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compat_symbol (libc, __copysign, __copysignl, GLIBC_2_0);
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compat_symbol (libc, copysign, copysignl, GLIBC_2_0);
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# endif
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#endif
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@ -0,0 +1 @@
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/* This function uses the same code as s_copysign.S. */
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