Use libm_alias_ldouble in math/.

This patch converts libm function implementations in math/ from using
weak_alias to using libm_alias_ldouble to define public function
names, in cases where it would be appropriate to define _Float128 /
_Float64x aliases for those functions as well (in cases where either
or both of those types exist and have the same ABI as long double).
This eliminates many ldbl-opt wrappers round these function
implementations.

Tested for x86_64, and with build-many-glibcs.py.  All installed
stripped shared libraries are unchanged except for libm.so on
powerpc64le.  As noted for a previous patch, powerpc64le's use of
ldbl-opt means various long double functions get defined using
long_double_symbol which gives them an explicit symbol version in the
object files, and this patch results in some such functions using
weak_alias instead (because powerpc64le never had a previous version
of these functions for long double = double); both produce a valid
libm.so with the same public symbols at the same versions, but macros
expanding to call weak_alias is cleaner in this case.

	* math/s_fmal.c: Include <libm-alias-ldouble.h>.
	(fmal): Define using libm_alias_ldouble.
	* math/w_acoshl_compat.c: Include <libm-alias-ldouble.h>.
	(acoshl): Define using libm_alias_ldouble.
	* math/w_acosl_compat.c: Include <libm-alias-ldouble.h>.
	(acosl): Define using libm_alias_ldouble.
	* math/w_asinl_compat.c: Include <libm-alias-ldouble.h>.
	(asinl): Define using libm_alias_ldouble.
	* math/w_atan2l_compat.c: Include <libm-alias-ldouble.h>.
	(atan2l): Define using libm_alias_ldouble.
	* math/w_atanhl_compat.c: Include <libm-alias-ldouble.h>.
	(atanhl): Define using libm_alias_ldouble.
	* math/w_coshl_compat.c: Include <libm-alias-ldouble.h>.
	(coshl): Define using libm_alias_ldouble.
	* math/w_exp10l_compat.c: Include <libm-alias-ldouble.h>.
	(exp10l): Define using libm_alias_ldouble.
	* math/w_exp2l_compat.c: Include <libm-alias-ldouble.h>.
	(exp2l): Define using libm_alias_ldouble.
	* math/w_expl_compat.c: Include <libm-alias-ldouble.h>.
	(expl): Define using libm_alias_ldouble.
	* math/w_fmodl_compat.c: Include <libm-alias-ldouble.h>.
	(fmodl): Define using libm_alias_ldouble.
	* math/w_hypotl_compat.c: Include <libm-alias-ldouble.h>.
	(hypotl): Define using libm_alias_ldouble.
	* math/w_j0l_compat.c: Include <libm-alias-ldouble.h>.
	(j0l): Define using libm_alias_ldouble.
	(y0l): Likewise.
	* math/w_j1l_compat.c: Include <libm-alias-ldouble.h>.
	(j1l): Define using libm_alias_ldouble.
	(y1l): Likewise.
	* math/w_jnl_compat.c: Include <libm-alias-ldouble.h>.
	(jnl): Define using libm_alias_ldouble.
	(ynl): Likewise.
	* math/w_log10l_compat.c: Include <libm-alias-ldouble.h>.
	(log10l): Define using libm_alias_ldouble.
	* math/w_log2l_compat.c: Include <libm-alias-ldouble.h>.
	(log2l): Define using libm_alias_ldouble.
	* math/w_logl_compat.c: Include <libm-alias-ldouble.h>.
	(logl): Define using libm_alias_ldouble.
	* math/w_powl_compat.c: Include <libm-alias-ldouble.h>.
	(powl): Define using libm_alias_ldouble.
	* math/w_remainderl_compat.c: Include <libm-alias-ldouble.h>.
	(remainderl): Define using libm_alias_ldouble.
	* math/w_sinhl_compat.c: Include <libm-alias-ldouble.h>.
	(sinhl): Define using libm_alias_ldouble.
	* math/w_sqrtl_compat.c: Include <libm-alias-ldouble.h>.
	(sqrtl): Define using libm_alias_ldouble.
	* math/w_tgammal_compat.c: Include <libm-alias-ldouble.h>.
	(tgammal): Define using libm_alias_ldouble.
	* sysdeps/ieee754/ldbl-opt/w_exp10l_compat.c [LIBM_SVID_COMPAT]
	(exp10l): Do not use long_double_symbol here.
	* sysdeps/ieee754/ldbl-opt/w_remainderl_compat.c
	[LIBM_SVID_COMPAT] (remainderl): Likewise.
	* sysdeps/ieee754/ldbl-opt/s_fmal.c: Remove.
	* sysdeps/ieee754/ldbl-opt/w_acoshl_compat.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/w_acosl_compat.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/w_asinl_compat.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/w_atan2l_compat.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/w_atanhl_compat.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/w_coshl_compat.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/w_expl_compat.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/w_fmodl_compat.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/w_hypotl_compat.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/w_j0l_compat.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/w_j1l_compat.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/w_jnl_compat.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/w_log10l_compat.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/w_log2l_compat.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/w_logl_compat.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/w_powl_compat.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/w_sinhl_compat.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/w_sqrtl_compat.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/w_tgammal_compat.c: Likewise.

46 files changed, 125 insertions, 169 deletions

diff --git a/ChangeLog b/ChangeLog
index 1d60d12643..a7bcaa689b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,79 @@
+2017-09-18  Joseph Myers  <joseph@codesourcery.com>
+
+	* math/s_fmal.c: Include <libm-alias-ldouble.h>.
+	(fmal): Define using libm_alias_ldouble.
+	* math/w_acoshl_compat.c: Include <libm-alias-ldouble.h>.
+	(acoshl): Define using libm_alias_ldouble.
+	* math/w_acosl_compat.c: Include <libm-alias-ldouble.h>.
+	(acosl): Define using libm_alias_ldouble.
+	* math/w_asinl_compat.c: Include <libm-alias-ldouble.h>.
+	(asinl): Define using libm_alias_ldouble.
+	* math/w_atan2l_compat.c: Include <libm-alias-ldouble.h>.
+	(atan2l): Define using libm_alias_ldouble.
+	* math/w_atanhl_compat.c: Include <libm-alias-ldouble.h>.
+	(atanhl): Define using libm_alias_ldouble.
+	* math/w_coshl_compat.c: Include <libm-alias-ldouble.h>.
+	(coshl): Define using libm_alias_ldouble.
+	* math/w_exp10l_compat.c: Include <libm-alias-ldouble.h>.
+	(exp10l): Define using libm_alias_ldouble.
+	* math/w_exp2l_compat.c: Include <libm-alias-ldouble.h>.
+	(exp2l): Define using libm_alias_ldouble.
+	* math/w_expl_compat.c: Include <libm-alias-ldouble.h>.
+	(expl): Define using libm_alias_ldouble.
+	* math/w_fmodl_compat.c: Include <libm-alias-ldouble.h>.
+	(fmodl): Define using libm_alias_ldouble.
+	* math/w_hypotl_compat.c: Include <libm-alias-ldouble.h>.
+	(hypotl): Define using libm_alias_ldouble.
+	* math/w_j0l_compat.c: Include <libm-alias-ldouble.h>.
+	(j0l): Define using libm_alias_ldouble.
+	(y0l): Likewise.
+	* math/w_j1l_compat.c: Include <libm-alias-ldouble.h>.
+	(j1l): Define using libm_alias_ldouble.
+	(y1l): Likewise.
+	* math/w_jnl_compat.c: Include <libm-alias-ldouble.h>.
+	(jnl): Define using libm_alias_ldouble.
+	(ynl): Likewise.
+	* math/w_log10l_compat.c: Include <libm-alias-ldouble.h>.
+	(log10l): Define using libm_alias_ldouble.
+	* math/w_log2l_compat.c: Include <libm-alias-ldouble.h>.
+	(log2l): Define using libm_alias_ldouble.
+	* math/w_logl_compat.c: Include <libm-alias-ldouble.h>.
+	(logl): Define using libm_alias_ldouble.
+	* math/w_powl_compat.c: Include <libm-alias-ldouble.h>.
+	(powl): Define using libm_alias_ldouble.
+	* math/w_remainderl_compat.c: Include <libm-alias-ldouble.h>.
+	(remainderl): Define using libm_alias_ldouble.
+	* math/w_sinhl_compat.c: Include <libm-alias-ldouble.h>.
+	(sinhl): Define using libm_alias_ldouble.
+	* math/w_sqrtl_compat.c: Include <libm-alias-ldouble.h>.
+	(sqrtl): Define using libm_alias_ldouble.
+	* math/w_tgammal_compat.c: Include <libm-alias-ldouble.h>.
+	(tgammal): Define using libm_alias_ldouble.
+	* sysdeps/ieee754/ldbl-opt/w_exp10l_compat.c [LIBM_SVID_COMPAT]
+	(exp10l): Do not use long_double_symbol here.
+	* sysdeps/ieee754/ldbl-opt/w_remainderl_compat.c
+	[LIBM_SVID_COMPAT] (remainderl): Likewise.
+	* sysdeps/ieee754/ldbl-opt/s_fmal.c: Remove.
+	* sysdeps/ieee754/ldbl-opt/w_acoshl_compat.c: Likewise.
+	* sysdeps/ieee754/ldbl-opt/w_acosl_compat.c: Likewise.
+	* sysdeps/ieee754/ldbl-opt/w_asinl_compat.c: Likewise.
+	* sysdeps/ieee754/ldbl-opt/w_atan2l_compat.c: Likewise.
+	* sysdeps/ieee754/ldbl-opt/w_atanhl_compat.c: Likewise.
+	* sysdeps/ieee754/ldbl-opt/w_coshl_compat.c: Likewise.
+	* sysdeps/ieee754/ldbl-opt/w_expl_compat.c: Likewise.
+	* sysdeps/ieee754/ldbl-opt/w_fmodl_compat.c: Likewise.
+	* sysdeps/ieee754/ldbl-opt/w_hypotl_compat.c: Likewise.
+	* sysdeps/ieee754/ldbl-opt/w_j0l_compat.c: Likewise.
+	* sysdeps/ieee754/ldbl-opt/w_j1l_compat.c: Likewise.
+	* sysdeps/ieee754/ldbl-opt/w_jnl_compat.c: Likewise.
+	* sysdeps/ieee754/ldbl-opt/w_log10l_compat.c: Likewise.
+	* sysdeps/ieee754/ldbl-opt/w_log2l_compat.c: Likewise.
+	* sysdeps/ieee754/ldbl-opt/w_logl_compat.c: Likewise.
+	* sysdeps/ieee754/ldbl-opt/w_powl_compat.c: Likewise.
+	* sysdeps/ieee754/ldbl-opt/w_sinhl_compat.c: Likewise.
+	* sysdeps/ieee754/ldbl-opt/w_sqrtl_compat.c: Likewise.
+	* sysdeps/ieee754/ldbl-opt/w_tgammal_compat.c: Likewise.
+
 2017-09-18  Wang Boshi  <wangboshi@huawei.com>  (tiny change)
 
 	* sysdeps/aarch64/start.S: Use MOVL instead of literal pools.
diff --git a/math/s_fmal.c b/math/s_fmal.c
index ba15c6a26b..73d42e21e9 100644
--- a/math/s_fmal.c
+++ b/math/s_fmal.c
@@ -18,10 +18,11 @@
    <http://www.gnu.org/licenses/>.  */
 
 #include <math.h>
+#include <libm-alias-ldouble.h>
 
 long double
 __fmal (long double x, long double y, long double z)
 {
   return (x * y) + z;
 }
-weak_alias (__fmal, fmal)
+libm_alias_ldouble (__fma, fma)
diff --git a/math/w_acoshl_compat.c b/math/w_acoshl_compat.c
index 79d0370eb3..1b82597e66 100644
--- a/math/w_acoshl_compat.c
+++ b/math/w_acoshl_compat.c
@@ -19,6 +19,7 @@
 #include <math.h>
 #include <math_private.h>
 #include <math-svid-compat.h>
+#include <libm-alias-ldouble.h>
 
 
 #if LIBM_SVID_COMPAT
@@ -32,5 +33,5 @@ __acoshl (long double x)
 
   return __ieee754_acoshl (x);
 }
-weak_alias (__acoshl, acoshl)
+libm_alias_ldouble (__acosh, acosh)
 #endif
diff --git a/math/w_acosl_compat.c b/math/w_acosl_compat.c
index 7d2f1835ae..d20c58b093 100644
--- a/math/w_acosl_compat.c
+++ b/math/w_acosl_compat.c
@@ -20,6 +20,7 @@
 #include <math.h>
 #include <math_private.h>
 #include <math-svid-compat.h>
+#include <libm-alias-ldouble.h>
 
 
 #if LIBM_SVID_COMPAT
@@ -37,5 +38,5 @@ __acosl (long double x)
 
   return __ieee754_acosl (x);
 }
-weak_alias (__acosl, acosl)
+libm_alias_ldouble (__acos, acos)
 #endif
diff --git a/math/w_asinl_compat.c b/math/w_asinl_compat.c
index c9e1a340cc..5f7396d464 100644
--- a/math/w_asinl_compat.c
+++ b/math/w_asinl_compat.c
@@ -20,6 +20,7 @@
 #include <math.h>
 #include <math_private.h>
 #include <math-svid-compat.h>
+#include <libm-alias-ldouble.h>
 
 
 #if LIBM_SVID_COMPAT
@@ -37,5 +38,5 @@ __asinl (long double x)
 
   return __ieee754_asinl (x);
 }
-weak_alias (__asinl, asinl)
+libm_alias_ldouble (__asin, asin)
 #endif
diff --git a/math/w_atan2l_compat.c b/math/w_atan2l_compat.c
index 9dc2b144ea..e7e9581b83 100644
--- a/math/w_atan2l_compat.c
+++ b/math/w_atan2l_compat.c
@@ -24,6 +24,7 @@
 #include <math.h>
 #include <math_private.h>
 #include <math-svid-compat.h>
+#include <libm-alias-ldouble.h>
 
 
 #if LIBM_SVID_COMPAT
@@ -40,5 +41,5 @@ __atan2l (long double y, long double x)
     __set_errno (ERANGE);
   return z;
 }
-weak_alias (__atan2l, atan2l)
+libm_alias_ldouble (__atan2, atan2)
 #endif
diff --git a/math/w_atanhl_compat.c b/math/w_atanhl_compat.c
index 837a6652b8..8ae9564e79 100644
--- a/math/w_atanhl_compat.c
+++ b/math/w_atanhl_compat.c
@@ -19,6 +19,7 @@
 #include <math.h>
 #include <math_private.h>
 #include <math-svid-compat.h>
+#include <libm-alias-ldouble.h>
 
 
 #if LIBM_SVID_COMPAT
@@ -35,5 +36,5 @@ __atanhl (long double x)
 
   return __ieee754_atanhl (x);
 }
-weak_alias (__atanhl, atanhl)
+libm_alias_ldouble (__atanh, atanh)
 #endif
diff --git a/math/w_coshl_compat.c b/math/w_coshl_compat.c
index 4dab6eff67..a97105020e 100644
--- a/math/w_coshl_compat.c
+++ b/math/w_coshl_compat.c
@@ -22,6 +22,7 @@
 #include <math.h>
 #include <math_private.h>
 #include <math-svid-compat.h>
+#include <libm-alias-ldouble.h>
 
 #if LIBM_SVID_COMPAT
 long double
@@ -34,5 +35,5 @@ __coshl (long double x)
 
 	return z;
 }
-weak_alias (__coshl, coshl)
+libm_alias_ldouble (__cosh, cosh)
 #endif
diff --git a/math/w_exp10l_compat.c b/math/w_exp10l_compat.c
index 3d7d66d5af..64d8d79cf4 100644
--- a/math/w_exp10l_compat.c
+++ b/math/w_exp10l_compat.c
@@ -24,6 +24,7 @@
 #include <math.h>
 #include <math_private.h>
 #include <math-svid-compat.h>
+#include <libm-alias-ldouble.h>
 
 #if LIBM_SVID_COMPAT
 long double
@@ -37,7 +38,7 @@ __exp10l (long double x)
 
   return z;
 }
-weak_alias (__exp10l, exp10l)
+libm_alias_ldouble (__exp10, exp10)
 # if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_27)
 strong_alias (__exp10l, __pow10l)
 compat_symbol (libm, __pow10l, pow10l, GLIBC_2_1);
diff --git a/math/w_exp2l_compat.c b/math/w_exp2l_compat.c
index 96d4b96c11..a132015866 100644
--- a/math/w_exp2l_compat.c
+++ b/math/w_exp2l_compat.c
@@ -5,6 +5,7 @@
 #include <math.h>
 #include <math_private.h>
 #include <math-svid-compat.h>
+#include <libm-alias-ldouble.h>
 
 #if LIBM_SVID_COMPAT
 long double
@@ -18,5 +19,5 @@ __exp2l (long double x)
 
   return z;
 }
-weak_alias (__exp2l, exp2l)
+libm_alias_ldouble (__exp2, exp2)
 #endif
diff --git a/math/w_expl_compat.c b/math/w_expl_compat.c
index ec076deaad..dda930405e 100644