POWER6/7 optimizations for copysign.

diff --git a/ChangeLog b/ChangeLog
index 2f99e8d8f5532cf061db50f41602b21bb0cb3037..98209260676c609decbb39dac8340b2483df9c83 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2010-08-12  Luis Machado  <luisgpm@br.ibm.com>
+
+       * sysdeps/powerpc/powerpc32/power6/fpu/s_copysign.S: New file.
+       * sysdeps/powerpc/powerpc32/power6/fpu/s_copysignf.S: New file.
+       * sysdeps/powerpc/powerpc64/power6/fpu/s_copysign.S: New file.
+       * sysdeps/powerpc/powerpc64/power6/fpu/s_copysignf.S: New file.
+
 2010-06-10  Luis Machado  <luisgpm@br.ibm.com>
 
        * sysdeps/powerpc/powerpc32/power7/memcmp.S: New file

diff --git a/sysdeps/powerpc/powerpc32/power6/fpu/s_copysign.S b/sysdeps/powerpc/powerpc32/power6/fpu/s_copysign.S
new file mode 100644 (file)
index 0000000..0e8b26d
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/power6/fpu/s_copysign.S
@@ -0,0 +1,56 @@
+/* copysign().  PowerPC32/POWER6 version.
+   Copyright (C) 2010 Free Software Foundation, Inc.
+   Contributed by Luis Machado <luisgpm@br.ibm.com>.
+   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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <sysdep.h>
+#include <math_ldbl_opt.h>
+
+/* double [f1] copysign (double [f1] x, double [f2] y);
+   copysign(x,y) returns a value with the magnitude of x and
+   with the sign bit of y.  */
+
+       .section    ".text"
+       .type       __copysign, @function
+       .machine    power6
+EALIGN (__copysign, 4, 0)
+       CALL_MCOUNT
+       fcpsgn  fp1,fp2,fp1
+       blr
+END (__copysign)
+
+hidden_def (__copysign)
+weak_alias (__copysign, copysign)
+
+/* It turns out that the 'double' version will also always work for
+   single-precision.  */
+strong_alias (__copysign, __copysignf)
+hidden_def (__copysignf)
+weak_alias (__copysignf, copysignf)
+
+#ifdef NO_LONG_DOUBLE
+strong_alias (__copysign, __copysignl)
+weak_alias (__copysign, copysignl)
+#endif
+
+#ifndef IS_IN_libm
+# if LONG_DOUBLE_COMPAT(libc, GLIBC_2_0)
+compat_symbol (libc, __copysign, __copysignl, GLIBC_2_0);
+compat_symbol (libc, copysign, copysignl, GLIBC_2_0);
+# endif
+#endif

diff --git a/sysdeps/powerpc/powerpc32/power6/fpu/s_copysignf.S b/sysdeps/powerpc/powerpc32/power6/fpu/s_copysignf.S
new file mode 100644 (file)
index 0000000..d4aa702
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/power6/fpu/s_copysignf.S
@@ -0,0 +1 @@
+/* This function uses the same code as s_copysign.S.  */

diff --git a/sysdeps/powerpc/powerpc64/power6/fpu/s_copysign.S b/sysdeps/powerpc/powerpc64/power6/fpu/s_copysign.S
new file mode 100644 (file)
index 0000000..0ff84d2
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/power6/fpu/s_copysign.S
@@ -0,0 +1,56 @@
+/* copysign().  PowerPC64/POWER6 version.
+   Copyright (C) 2010 Free Software Foundation, Inc.
+   Contributed by Luis Machado <luisgpm@br.ibm.com>.
+   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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <sysdep.h>
+#include <math_ldbl_opt.h>
+
+/* double [f1] copysign (double [f1] x, double [f2] y);
+   copysign(x,y) returns a value with the magnitude of x and
+   with the sign bit of y.  */
+
+       .section    ".text"
+       .type       __copysign, @function
+       .machine    power6
+EALIGN (__copysign, 4, 0)
+       CALL_MCOUNT 0
+       fcpsgn  fp1,fp2,fp1
+       blr
+END (__copysign)
+
+hidden_def (__copysign)
+weak_alias (__copysign, copysign)
+
+/* It turns out that the 'double' version will also always work for
+   single-precision.  */
+strong_alias (__copysign, __copysignf)
+hidden_def (__copysignf)
+weak_alias (__copysignf, copysignf)
+
+#ifdef NO_LONG_DOUBLE
+strong_alias (__copysign, __copysignl)
+weak_alias (__copysign, copysignl)
+#endif
+
+#ifndef IS_IN_libm
+# if LONG_DOUBLE_COMPAT(libc, GLIBC_2_0)
+compat_symbol (libc, __copysign, __copysignl, GLIBC_2_0);
+compat_symbol (libc, copysign, copysignl, GLIBC_2_0);
+# endif
+#endif

diff --git a/sysdeps/powerpc/powerpc64/power6/fpu/s_copysignf.S b/sysdeps/powerpc/powerpc64/power6/fpu/s_copysignf.S
new file mode 100644 (file)
index 0000000..d4aa702
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/power6/fpu/s_copysignf.S
@@ -0,0 +1 @@
+/* This function uses the same code as s_copysign.S.  */