Use libm_alias_double for dbl-64 fma [committed]

Use libm_alias_double for dbl-64 fma [committed]

[Joseph Myers]

This patch makes dbl-64 fma use libm_alias_double.  The ldbl-opt
version is removed.  The sparc32 version no longer needs to handle
compat symbols, while alpha needs a new wrapper to avoid getting the
ldbl-128 version (where ldbl-opt is earlier in the list of sysdeps
directories, so previously fma came from there).

Tested for x86_64, and tested with build-many-glibcs.py that installed
stripped shared libraries are unchanged by the patch.  Committed.

2017-10-04  Joseph Myers  <joseph@codesourcery.com>

	* sysdeps/ieee754/dbl-64/s_fma.c: Include <libm-alias-double.h>.
	(fma): Define using libm_alias_double.
	* sysdeps/ieee754/ldbl-opt/s_fma.c: Remove file.
	* sysdeps/sparc/sparc32/fpu/s_fma.c: Do not include
	<math_ldbl_opt.h>.
	(fmal): Do not define as compat symbol here.
	* sysdeps/alpha/fpu/s_fma.c: New file.

diff --git a/sysdeps/alpha/fpu/s_fma.c b/sysdeps/alpha/fpu/s_fma.c
new file mode 100644
index 0000000..8f62605
--- /dev/null
+++ b/sysdeps/alpha/fpu/s_fma.c
@@ -0,0 +1,2 @@
+/* Always use dbl-64 version because long double is emulated in software.  */
+#include <sysdeps/ieee754/dbl-64/s_fma.c>
diff --git a/sysdeps/ieee754/dbl-64/s_fma.c b/sysdeps/ieee754/dbl-64/s_fma.c
index 68c8515..3a5a885 100644
--- a/sysdeps/ieee754/dbl-64/s_fma.c
+++ b/sysdeps/ieee754/dbl-64/s_fma.c
@@ -22,6 +22,7 @@
 #include <fenv.h>
 #include <ieee754.h>
 #include <math_private.h>
+#include <libm-alias-double.h>
 #include <tininess.h>
 
 /* This implementation uses rounding to odd to avoid problems with
@@ -292,10 +293,5 @@ __fma (double x, double y, double z)
     }
 }
 #ifndef __fma
-weak_alias (__fma, fma)
-#endif
-
-#ifdef NO_LONG_DOUBLE
-strong_alias (__fma, __fmal)
-weak_alias (__fmal, fmal)
+libm_alias_double (__fma, fma)
 #endif
diff --git a/sysdeps/ieee754/ldbl-opt/s_fma.c b/sysdeps/ieee754/ldbl-opt/s_fma.c
deleted file mode 100644
index 1723c5c..0000000
--- a/sysdeps/ieee754/ldbl-opt/s_fma.c
+++ /dev/null
@@ -1,5 +0,0 @@
-#include <math_ldbl_opt.h>
-#include <sysdeps/ieee754/dbl-64/s_fma.c>
-#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1)
-compat_symbol (libm, __fma, fmal, GLIBC_2_1);
-#endif
diff --git a/sysdeps/sparc/sparc32/fpu/s_fma.c b/sysdeps/sparc/sparc32/fpu/s_fma.c
index bfdcb23..8f62605 100644
--- a/sysdeps/sparc/sparc32/fpu/s_fma.c
+++ b/sysdeps/sparc/sparc32/fpu/s_fma.c
@@ -1,6 +1,2 @@
 /* Always use dbl-64 version because long double is emulated in software.  */
-#include <math_ldbl_opt.h>
 #include <sysdeps/ieee754/dbl-64/s_fma.c>
-#if LONG_DOUBLE_COMPAT (libm, GLIBC_2_1)
-compat_symbol (libm, __fma, fmal, GLIBC_2_1);
-#endif

-- 
Joseph S. Myers
joseph@codesourcery.com