Add libm_alias_finite for _finite symbols

This patch adds a new macro, libm_alias_finite, to define all _finite
symbol.  It sets all _finite symbol as compat symbol based on its first
version (obtained from the definition at built generated first-versions.h).

The <fn>f128_finite symbols were introduced in GLIBC 2.26 and so need
special treatment in code that is shared between long double and float128.
It is done by adding a list, similar to internal symbol redifinition,
on sysdeps/ieee754/float128/float128_private.h.

Alpha also needs some tricky changes to ensure we still emit 2 compat
symbols for sqrt(f).

Passes buildmanyglibc.

Co-authored-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>

10 files changed, 28 insertions, 22 deletions

diff --git a/sysdeps/x86_64/fpu/multiarch/e_asin.c b/sysdeps/x86_64/fpu/multiarch/e_asin.c
index bcd4a973d6..7cdb069e65 100644
--- a/sysdeps/x86_64/fpu/multiarch/e_asin.c
+++ b/sysdeps/x86_64/fpu/multiarch/e_asin.c
@@ -16,6 +16,8 @@
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
+#include <libm-alias-finite.h>
+
 extern double __redirect_ieee754_asin (double);
 extern double __redirect_ieee754_acos (double);
 
@@ -24,7 +26,7 @@ extern double __redirect_ieee754_acos (double);
 
 libc_ifunc_redirected (__redirect_ieee754_asin, __ieee754_asin,
 		       IFUNC_SELECTOR ());
-strong_alias (__ieee754_asin, __asin_finite)
+libm_alias_finite (__ieee754_asin, __asin)
 
 #undef SYMBOL_NAME
 #define SYMBOL_NAME ieee754_acos
@@ -32,8 +34,7 @@ strong_alias (__ieee754_asin, __asin_finite)
 
 libc_ifunc_redirected (__redirect_ieee754_acos, __ieee754_acos,
 		       IFUNC_SELECTOR ());
-strong_alias (__ieee754_acos, __acos_finite)
-
+libm_alias_finite (__ieee754_acos, __acos)
 
 #define __ieee754_acos __ieee754_acos_sse2
 #define __ieee754_asin __ieee754_asin_sse2
diff --git a/sysdeps/x86_64/fpu/multiarch/e_atan2.c b/sysdeps/x86_64/fpu/multiarch/e_atan2.c
index dfd9b4eede..f06e980b1c 100644
--- a/sysdeps/x86_64/fpu/multiarch/e_atan2.c
+++ b/sysdeps/x86_64/fpu/multiarch/e_atan2.c
@@ -16,6 +16,8 @@
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
+#include <libm-alias-finite.h>
+
 extern double __redirect_ieee754_atan2 (double, double);
 
 #define SYMBOL_NAME ieee754_atan2
@@ -23,7 +25,7 @@ extern double __redirect_ieee754_atan2 (double, double);
 
 libc_ifunc_redirected (__redirect_ieee754_atan2,
 		       __ieee754_atan2, IFUNC_SELECTOR ());
-strong_alias (__ieee754_atan2, __atan2_finite)
+libm_alias_finite (__ieee754_atan2, __atan2)
 
 #define __ieee754_atan2 __ieee754_atan2_sse2
 #include <sysdeps/ieee754/dbl-64/e_atan2.c>
diff --git a/sysdeps/x86_64/fpu/multiarch/e_exp.c b/sysdeps/x86_64/fpu/multiarch/e_exp.c
index 9193e8bcdf..5979909a02 100644
--- a/sysdeps/x86_64/fpu/multiarch/e_exp.c
+++ b/sysdeps/x86_64/fpu/multiarch/e_exp.c
@@ -17,6 +17,7 @@
    <https://www.gnu.org/licenses/>.  */
 
 #include <math.h>
+#include <libm-alias-finite.h>
 
 extern double __redirect_ieee754_exp (double);
 
@@ -25,7 +26,7 @@ extern double __redirect_ieee754_exp (double);
 
 libc_ifunc_redirected (__redirect_ieee754_exp, __ieee754_exp,
 		       IFUNC_SELECTOR ());
-strong_alias (__ieee754_exp, __exp_finite)
+libm_alias_finite (__ieee754_exp, __exp)
 
 #define __exp __ieee754_exp_sse2
 #include <sysdeps/ieee754/dbl-64/e_exp.c>
diff --git a/sysdeps/x86_64/fpu/multiarch/e_exp2f.c b/sysdeps/x86_64/fpu/multiarch/e_exp2f.c
index 3a90f5cd2d..ea4ae72318 100644
--- a/sysdeps/x86_64/fpu/multiarch/e_exp2f.c
+++ b/sysdeps/x86_64/fpu/multiarch/e_exp2f.c
@@ -17,6 +17,7 @@
    <https://www.gnu.org/licenses/>.  */
 
 #include <libm-alias-float.h>
+#include <libm-alias-finite.h>
 
 extern float __redirect_exp2f (float);
 
@@ -26,15 +27,14 @@ extern float __redirect_exp2f (float);
 libc_ifunc_redirected (__redirect_exp2f, __exp2f, IFUNC_SELECTOR ());
 
 #ifdef SHARED
-# include <shlib-compat.h>
-versioned_symbol (libm, __exp2f, exp2f, GLIBC_2_27);
+versioned_symbol (libm, __ieee754_exp2f, exp2f, GLIBC_2_27);
 libm_alias_float_other (__exp2, exp2)
 #else
 libm_alias_float (__exp2, exp2)
 #endif
 
 strong_alias (__exp2f, __ieee754_exp2f)
-strong_alias (__exp2f, __exp2f_finite)
+libm_alias_finite (__exp2f, __exp2f)
 
 #define __exp2f __exp2f_sse2
 #include <sysdeps/ieee754/flt-32/e_exp2f.c>
diff --git a/sysdeps/x86_64/fpu/multiarch/e_expf.c b/sysdeps/x86_64/fpu/multiarch/e_expf.c
index 4ccee5bf13..f685f31089 100644
--- a/sysdeps/x86_64/fpu/multiarch/e_expf.c
+++ b/sysdeps/x86_64/fpu/multiarch/e_expf.c
@@ -17,6 +17,7 @@
    <https://www.gnu.org/licenses/>.  */
 
 #include <libm-alias-float.h>
+#include <libm-alias-finite.h>
 
 extern float __redirect_expf (float);
 
@@ -29,15 +30,14 @@ libc_ifunc_redirected (__redirect_expf, __expf, IFUNC_SELECTOR ());
 __hidden_ver1 (__expf, __GI___expf, __redirect_expf)
   __attribute__ ((visibility ("hidden")));
 
-# include <shlib-compat.h>
-versioned_symbol (libm, __expf, expf, GLIBC_2_27);
+versioned_symbol (libm, __ieee754_expf, expf, GLIBC_2_27);
 libm_alias_float_other (__exp, exp)
 #else
 libm_alias_float (__exp, exp)
 #endif
 
 strong_alias (__expf, __ieee754_expf)
-strong_alias (__expf, __expf_finite)
+libm_alias_finite (__expf, __expf)
 
 #define __expf __expf_sse2
 #include <sysdeps/ieee754/flt-32/e_expf.c>
diff --git a/sysdeps/x86_64/fpu/multiarch/e_log.c b/sysdeps/x86_64/fpu/multiarch/e_log.c
index 14c9a94510..81348627c2 100644
--- a/sysdeps/x86_64/fpu/multiarch/e_log.c
+++ b/sysdeps/x86_64/fpu/multiarch/e_log.c
@@ -17,6 +17,7 @@
    <https://www.gnu.org/licenses/>.  */
 
 #include <math.h>
+#include <libm-alias-finite.h>
 
 extern double __redirect_ieee754_log (double);
 
@@ -25,7 +26,7 @@ extern double __redirect_ieee754_log (double);
 
 libc_ifunc_redirected (__redirect_ieee754_log, __ieee754_log,
 		       IFUNC_SELECTOR ());
-strong_alias (__ieee754_log, __log_finite)
+libm_alias_finite (__ieee754_log, __log)
 
 #define __log __ieee754_log_sse2
 #include <sysdeps/ieee754/dbl-64/e_log.c>
diff --git a/sysdeps/x86_64/fpu/multiarch/e_log2f.c b/sysdeps/x86_64/fpu/multiarch/e_log2f.c
index 53f3d2ffc5..8410cbee0e 100644
--- a/sysdeps/x86_64/fpu/multiarch/e_log2f.c
+++ b/sysdeps/x86_64/fpu/multiarch/e_log2f.c
@@ -17,6 +17,7 @@
    <https://www.gnu.org/licenses/>.  */
 
 #include <libm-alias-float.h>
+#include <libm-alias-finite.h>
 
 extern float __redirect_log2f (float);
 
@@ -29,15 +30,14 @@ libc_ifunc_redirected (__redirect_log2f, __log2f, IFUNC_SELECTOR ());
 __hidden_ver1 (__log2f, __GI___log2f, __redirect_log2f)
   __attribute__ ((visibility ("hidden")));
 
-# include <shlib-compat.h>
-versioned_symbol (libm, __log2f, log2f, GLIBC_2_27);
+versioned_symbol (libm, __ieee754_log2f, log2f, GLIBC_2_27);
 libm_alias_float_other (__log2, log2)
 #else
 libm_alias_float (__log2, log2)
 #endif
 
 strong_alias (__log2f, __ieee754_log2f)
-strong_alias (__log2f, __log2f_finite)
+libm_alias_finite (__log2f, __log2f)
 
 #define __log2f __log2f_sse2
 #include <sysdeps/ieee754/flt-32/e_log2f.c>
diff --git a/sysdeps/x86_64/fpu/multiarch/e_logf.c b/sysdeps/x86_64/fpu/multiarch/e_logf.c
index c03cc9464d..71faa7c587 100644
--- a/sysdeps/x86_64/fpu/multiarch/e_logf.c
+++ b/sysdeps/x86_64/fpu/multiarch/e_logf.c
@@ -17,6 +17,7 @@
    <https://www.gnu.org/licenses/>.  */
 
 #include <libm-alias-float.h>
+#include <libm-alias-finite.h>
 
 extern float __redirect_logf (float);
 
@@ -29,15 +30,14 @@ libc_ifunc_redirected (__redirect_logf, __logf, IFUNC_SELECTOR ());
 __hidden_ver1 (__logf, __GI___logf, __redirect_logf)
   __attribute__ ((visibility ("hidden")));
 
-# include <shlib-compat.h>
-versioned_symbol (libm, __logf, logf, GLIBC_2_27);
+versioned_symbol (libm, __ieee754_logf, logf, GLIBC_2_27);
 libm_alias_float_other (__log, log)
 #else
 libm_alias_float (__log, log)
 #endif
 
 strong_alias (__logf, __ieee754_logf)
-strong_alias (__logf, __logf_finite)
+libm_alias_finite (__logf, __logf)
 
 #define __logf __logf_sse2
 #include <sysdeps/ieee754/flt-32/e_logf.c>
diff --git a/sysdeps/x86_64/fpu/multiarch/e_pow.c b/sysdeps/x86_64/fpu/multiarch/e_pow.c
index 6636c75c2e..c96aedd9d6 100644
--- a/sysdeps/x86_64/fpu/multiarch/e_pow.c
+++ b/sysdeps/x86_64/fpu/multiarch/e_pow.c
@@ -17,6 +17,7 @@
    <https://www.gnu.org/licenses/>.  */
 
 #include <math.h>
+#include <libm-alias-finite.h>
 
 extern double __redirect_ieee754_pow (double, double);
 
@@ -25,7 +26,7 @@ extern double __redirect_ieee754_pow (double, double);
 
 libc_ifunc_redirected (__redirect_ieee754_pow,
 		       __ieee754_pow, IFUNC_SELECTOR ());
-strong_alias (__ieee754_pow, __pow_finite)
+libm_alias_finite (__ieee754_pow, __pow)
 
 #define __pow __ieee754_pow_sse2
 #include <sysdeps/ieee754/dbl-64/e_pow.c>
diff --git a/sysdeps/x86_64/fpu/multiarch/e_powf.c b/sysdeps/x86_64/fpu/multiarch/e_powf.c
index d83585bfdd..c5bd42b099 100644
--- a/sysdeps/x86_64/fpu/multiarch/e_powf.c
+++ b/sysdeps/x86_64/fpu/multiarch/e_powf.c
@@ -17,6 +17,7 @@
    <https://www.gnu.org/licenses/>.  */
 
 #include <libm-alias-float.h>
+#include <libm-alias-finite.h>
 
 #define powf __redirect_powf
 #define __DECL_SIMD___redirect_powf
@@ -32,15 +33,14 @@ libc_ifunc_redirected (__redirect_powf, __powf, IFUNC_SELECTOR ());
 __hidden_ver1 (__powf, __GI___powf, __redirect_powf)
   __attribute__ ((visibility ("hidden")));
 
-# include <shlib-compat.h>
-versioned_symbol (libm, __powf, powf, GLIBC_2_27);
+versioned_symbol (libm, __ieee754_powf, powf, GLIBC_2_27);
 libm_alias_float_other (__pow, pow)
 #else
 libm_alias_float (__pow, pow)
 #endif
 
 strong_alias (__powf, __ieee754_powf)
-strong_alias (__powf, __powf_finite)
+libm_alias_finite (__powf, __powf)
 
 #define __powf __powf_sse2
 #include <sysdeps/ieee754/flt-32/e_powf.c>