Use libm_alias_double for powerpc fabs, fma [committed]

[Joseph Myers <joseph at codesourcery dot com>]

Continuing the preparation for additional _FloatN / _FloatNx function
aliases, this patch makes powerpc fabs and fma use libm_alias_double
to define function aliases.  This brings in automatic symbol
versioning compat handling, so the powerpc32 and powerpc64 wrappers
that added such handling to the generic sysdeps/powerpc/fpu versions
are removed as no longer required (there are no sysdeps directory
ordering issues that would necessitate keeping trivial wrappers
there).

Tested with build-many-glibcs.py that installed stripped shared
libraries are unchanged for all its hard-float powerpc configurations.  
Committed.

2017-12-01  Joseph Myers  <joseph@codesourcery.com>

	* sysdeps/powerpc/fpu/s_fabs.S: Include <libm-alias-double.h>.
	(fabs): Define using libm_alias_double.
	* sysdeps/powerpc/fpu/s_fma.S: Include <libm-alias-double.h>.
	(fma): Define using libm_alias_double.
	* sysdeps/powerpc/powerpc32/fpu/s_fabs.S: Remove file.
	* sysdeps/powerpc/powerpc32/fpu/s_fma.S: Likewise.
	* sysdeps/powerpc/powerpc64/fpu/s_fabs.S: Likewise.
	* sysdeps/powerpc/powerpc64/fpu/s_fma.S: Likewise.

diff --git a/sysdeps/powerpc/fpu/s_fabs.S b/sysdeps/powerpc/fpu/s_fabs.S
index 87dc82e..68f8801 100644
--- a/sysdeps/powerpc/fpu/s_fabs.S
+++ b/sysdeps/powerpc/fpu/s_fabs.S
@@ -17,6 +17,7 @@
    <http://www.gnu.org/licenses/>.  */
 
 #include <sysdep.h>
+#include <libm-alias-double.h>
 
 ENTRY(__fabs)
 /* double [f1] fabs (double [f1] x); */
@@ -24,13 +25,8 @@ ENTRY(__fabs)
 	blr
 END(__fabs)
 
-weak_alias (__fabs,fabs)
+libm_alias_double (__fabs, fabs)
 
 /* It turns out that it's safe to use this code even for single-precision.  */
 strong_alias(__fabs,__fabsf)
 weak_alias (__fabs,fabsf)
-
-#ifdef NO_LONG_DOUBLE
-weak_alias (__fabs,__fabsl)
-weak_alias (__fabs,fabsl)
-#endif
diff --git a/sysdeps/powerpc/fpu/s_fma.S b/sysdeps/powerpc/fpu/s_fma.S
index 19d2717..8a1a8e5 100644
--- a/sysdeps/powerpc/fpu/s_fma.S
+++ b/sysdeps/powerpc/fpu/s_fma.S
@@ -17,6 +17,7 @@
    <http://www.gnu.org/licenses/>.  */
 
 #include <sysdep.h>
+#include <libm-alias-double.h>
 
 ENTRY_TOCLESS(__fma)
 /* double [f1] fma (double [f1] x, double [f2] y, double [f3] z); */
@@ -24,9 +25,4 @@ ENTRY_TOCLESS(__fma)
 	blr
 END(__fma)
 
-weak_alias (__fma,fma)
-
-#ifdef NO_LONG_DOUBLE
-weak_alias (__fma,__fmal)
-weak_alias (__fma,fmal)
-#endif
+libm_alias_double (__fma, fma)
diff --git a/sysdeps/powerpc/powerpc32/fpu/s_fabs.S b/sysdeps/powerpc/powerpc32/fpu/s_fabs.S
deleted file mode 100644
index 53d2130..0000000
--- a/sysdeps/powerpc/powerpc32/fpu/s_fabs.S
+++ /dev/null
@@ -1,5 +0,0 @@
-#include <math_ldbl_opt.h>
-#include <sysdeps/powerpc/fpu/s_fabs.S>
-#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0)
-compat_symbol (libm, __fabs, fabsl, GLIBC_2_0)
-#endif
diff --git a/sysdeps/powerpc/powerpc32/fpu/s_fma.S b/sysdeps/powerpc/powerpc32/fpu/s_fma.S
deleted file mode 100644
index d40695c..0000000
--- a/sysdeps/powerpc/powerpc32/fpu/s_fma.S
+++ /dev/null
@@ -1,5 +0,0 @@
-#include <math_ldbl_opt.h>
-#include <sysdeps/powerpc/fpu/s_fma.S>
-#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1)
-compat_symbol (libm, __fma, fmal, GLIBC_2_1)
-#endif
diff --git a/sysdeps/powerpc/powerpc64/fpu/s_fabs.S b/sysdeps/powerpc/powerpc64/fpu/s_fabs.S
deleted file mode 100644
index 53d2130..0000000
--- a/sysdeps/powerpc/powerpc64/fpu/s_fabs.S
+++ /dev/null
@@ -1,5 +0,0 @@
-#include <math_ldbl_opt.h>
-#include <sysdeps/powerpc/fpu/s_fabs.S>
-#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0)
-compat_symbol (libm, __fabs, fabsl, GLIBC_2_0)
-#endif
diff --git a/sysdeps/powerpc/powerpc64/fpu/s_fma.S b/sysdeps/powerpc/powerpc64/fpu/s_fma.S
deleted file mode 100644
index d40695c..0000000
--- a/sysdeps/powerpc/powerpc64/fpu/s_fma.S
+++ /dev/null
@@ -1,5 +0,0 @@
-#include <math_ldbl_opt.h>
-#include <sysdeps/powerpc/fpu/s_fma.S>
-#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1)
-compat_symbol (libm, __fma, fmal, GLIBC_2_1)
-#endif

-- 
Joseph S. Myers
joseph@codesourcery.com