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>

7 files changed, 14 insertions, 11 deletions

diff --git a/sysdeps/i386/i686/fpu/e_log.S b/sysdeps/i386/i686/fpu/e_log.S
index 73060b088c..3ac3dca208 100644
--- a/sysdeps/i386/i686/fpu/e_log.S
+++ b/sysdeps/i386/i686/fpu/e_log.S
@@ -6,7 +6,7 @@
  */
 
 #include <machine/asm.h>
-
+#include <libm-alias-finite.h>
 
 	.text
 ENTRY(__ieee754_log)
@@ -27,3 +27,4 @@ ENTRY(__log_finite)
 	fyl2x			// log(x)
 	ret
 END(__log_finite)
+libm_alias_finite (__log_finite, __log)
diff --git a/sysdeps/i386/i686/fpu/e_logl.S b/sysdeps/i386/i686/fpu/e_logl.S
index 7e3bc8d817..77ec373abc 100644
--- a/sysdeps/i386/i686/fpu/e_logl.S
+++ b/sysdeps/i386/i686/fpu/e_logl.S
@@ -8,6 +8,7 @@
  */
 
 #include <machine/asm.h>
+#include <libm-alias-finite.h>
 
 	.section .rodata.cst8,"aM",@progbits,8
 
@@ -92,3 +93,4 @@ ENTRY(__logl_finite)
 	fyl2xp1			// log(x)
 	ret
 END(__logl_finite)
+libm_alias_finite (__logl_finite, __logl)
diff --git a/sysdeps/i386/i686/fpu/multiarch/e_exp2f.c b/sysdeps/i386/i686/fpu/multiarch/e_exp2f.c
index eaad229451..4647c844ae 100644
--- a/sysdeps/i386/i686/fpu/multiarch/e_exp2f.c
+++ b/sysdeps/i386/i686/fpu/multiarch/e_exp2f.c
@@ -20,12 +20,12 @@ extern float __redirect_exp2f (float);
 
 #define SYMBOL_NAME exp2f
 #include "ifunc-sse2.h"
+#include <libm-alias-finite.h>
 
 libc_ifunc_redirected (__redirect_exp2f, __exp2f, IFUNC_SELECTOR ());
 
 #include <libm-alias-float.h>
 #ifdef SHARED
-# include <shlib-compat.h>
 versioned_symbol (libm, __exp2f, exp2f, GLIBC_2_27);
 libm_alias_float_other (__exp2, exp2)
 #else
@@ -33,7 +33,7 @@ libm_alias_float (__exp2, exp2)
 #endif
 
 strong_alias (__exp2f, __ieee754_exp2f)
-strong_alias (__exp2f, __exp2f_finite)
+libm_alias_finite (__ieee754_exp2f, __exp2f)
 
 #define __exp2f __exp2f_ia32
 #include <sysdeps/ieee754/flt-32/e_exp2f.c>
diff --git a/sysdeps/i386/i686/fpu/multiarch/e_expf.c b/sysdeps/i386/i686/fpu/multiarch/e_expf.c
index b6cdb3ece0..3b3df43213 100644
--- a/sysdeps/i386/i686/fpu/multiarch/e_expf.c
+++ b/sysdeps/i386/i686/fpu/multiarch/e_expf.c
@@ -20,6 +20,7 @@ extern float __redirect_expf (float);
 
 #define SYMBOL_NAME expf
 #include "ifunc-sse2.h"
+#include <libm-alias-finite.h>
 
 libc_ifunc_redirected (__redirect_expf, __expf, IFUNC_SELECTOR ());
 
@@ -28,7 +29,6 @@ libc_ifunc_redirected (__redirect_expf, __expf, IFUNC_SELECTOR ());
 __hidden_ver1 (__expf_ia32, __GI___expf, __redirect_expf)
   __attribute__ ((visibility ("hidden"))) __THROW;
 
-# include <shlib-compat.h>
 versioned_symbol (libm, __expf, expf, GLIBC_2_27);
 libm_alias_float_other (__exp, exp)
 #else
@@ -36,7 +36,7 @@ libm_alias_float (__exp, exp)
 #endif
 
 strong_alias (__expf, __ieee754_expf)
-strong_alias (__expf, __expf_finite)
+libm_alias_finite (__ieee754_expf, __expf)
 
 #define __expf __expf_ia32
 #include <sysdeps/ieee754/flt-32/e_expf.c>
diff --git a/sysdeps/i386/i686/fpu/multiarch/e_log2f.c b/sysdeps/i386/i686/fpu/multiarch/e_log2f.c
index ef720236d0..e21cadadf5 100644
--- a/sysdeps/i386/i686/fpu/multiarch/e_log2f.c
+++ b/sysdeps/i386/i686/fpu/multiarch/e_log2f.c
@@ -20,6 +20,7 @@ extern float __redirect_log2f (float);
 
 #define SYMBOL_NAME log2f
 #include "ifunc-sse2.h"
+#include <libm-alias-finite.h>
 
 libc_ifunc_redirected (__redirect_log2f, __log2f, IFUNC_SELECTOR ());
 
@@ -28,7 +29,6 @@ libc_ifunc_redirected (__redirect_log2f, __log2f, IFUNC_SELECTOR ());
 __hidden_ver1 (__log2f_ia32, __GI___log2f, __redirect_log2f)
   __attribute__ ((visibility ("hidden"))) __THROW;
 
-# include <shlib-compat.h>
 versioned_symbol (libm, __log2f, log2f, GLIBC_2_27);
 libm_alias_float_other (__log2, log2)
 #else
@@ -36,7 +36,7 @@ libm_alias_float (__log2, log2)
 #endif
 
 strong_alias (__log2f, __ieee754_log2f)
-strong_alias (__log2f, __log2f_finite)
+libm_alias_finite (__ieee754_log2f, __log2f)
 
 #define __log2f __log2f_ia32
 #include <sysdeps/ieee754/flt-32/e_log2f.c>
diff --git a/sysdeps/i386/i686/fpu/multiarch/e_logf.c b/sysdeps/i386/i686/fpu/multiarch/e_logf.c
index e08cfcb7c9..46d3dab13f 100644
--- a/sysdeps/i386/i686/fpu/multiarch/e_logf.c
+++ b/sysdeps/i386/i686/fpu/multiarch/e_logf.c
@@ -20,6 +20,7 @@ extern float __redirect_logf (float);
 
 #define SYMBOL_NAME logf
 #include "ifunc-sse2.h"
+#include <libm-alias-finite.h>
 
 libc_ifunc_redirected (__redirect_logf, __logf, IFUNC_SELECTOR ());
 
@@ -28,7 +29,6 @@ libc_ifunc_redirected (__redirect_logf, __logf, IFUNC_SELECTOR ());
 __hidden_ver1 (__logf_ia32, __GI___logf, __redirect_logf)
   __attribute__ ((visibility ("hidden"))) __THROW;
 
-# include <shlib-compat.h>
 versioned_symbol (libm, __logf, logf, GLIBC_2_27);
 libm_alias_float_other (__log, log)
 #else
@@ -36,7 +36,7 @@ libm_alias_float (__log, log)
 #endif
 
 strong_alias (__logf, __ieee754_logf)
-strong_alias (__logf, __logf_finite)
+libm_alias_finite (__ieee754_logf, __logf)
 
 #define __logf __logf_ia32
 #include <sysdeps/ieee754/flt-32/e_logf.c>
diff --git a/sysdeps/i386/i686/fpu/multiarch/e_powf.c b/sysdeps/i386/i686/fpu/multiarch/e_powf.c
index a83b71578d..1d6a933223 100644
--- a/sysdeps/i386/i686/fpu/multiarch/e_powf.c
+++ b/sysdeps/i386/i686/fpu/multiarch/e_powf.c
@@ -23,6 +23,7 @@
 
 #define SYMBOL_NAME powf
 #include "ifunc-sse2.h"
+#include <libm-alias-finite.h>
 
 libc_ifunc_redirected (__redirect_powf, __powf, IFUNC_SELECTOR ());
 
@@ -31,7 +32,6 @@ libc_ifunc_redirected (__redirect_powf, __powf, IFUNC_SELECTOR ());
 __hidden_ver1 (__powf_ia32, __GI___powf, __redirect_powf)
   __attribute__ ((visibility ("hidden")));
 
-# include <shlib-compat.h>
 versioned_symbol (libm, __powf, powf, GLIBC_2_27);
 libm_alias_float_other (__pow, pow)
 #else
@@ -39,7 +39,7 @@ libm_alias_float (__pow, pow)
 #endif
 
 strong_alias (__powf, __ieee754_powf)
-strong_alias (__powf, __powf_finite)
+libm_alias_finite (__ieee754_powf, __powf)
 
 #define __powf __powf_ia32
 #include <sysdeps/ieee754/flt-32/e_powf.c>