[glibc/azanella/clang] Remove __LDBL_REDIR macros

[Adhemerval Zanella <azanella@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=d041eb518864911e74990d108488ccd2b9467aab

commit d041eb518864911e74990d108488ccd2b9467aab
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Thu Mar 3 12:22:34 2022 -0300

    Remove __LDBL_REDIR macros
    
    Since they are not used anymore.

Diff:
---
 include/sys/cdefs.h | 20 --------------------
 misc/sys/cdefs.h    | 45 +--------------------------------------------
 2 files changed, 1 insertion(+), 64 deletions(-)

diff --git a/include/sys/cdefs.h b/include/sys/cdefs.h
index 56adb231aa..7f7aa967fa 100644
--- a/include/sys/cdefs.h
+++ b/include/sys/cdefs.h
@@ -20,26 +20,6 @@ extern void __chk_fail (void) __attribute__ ((__noreturn__));
 libc_hidden_proto (__chk_fail)
 rtld_hidden_proto (__chk_fail)
 
-/* If we are using redirects internally to support long double,
-   we need to tweak some macros to ensure the PLT bypass tricks
-   continue to work in libc. */
-#if __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1 && IS_IN (libc) && defined SHARED
-
-# undef __LDBL_REDIR_DECL
-# define __LDBL_REDIR_DECL(func) \
-   extern __typeof(func) func __asm (__ASMNAME ("__GI____ieee128_" #func));
-
-# undef libc_hidden_ldbl_proto
-# define libc_hidden_ldbl_proto(func, attrs...) \
-   extern __typeof(func) ___ieee128_ ## func; \
-   libc_hidden_proto (___ieee128_ ## func, ##attrs);
-
-# undef __LDBL_REDIR2_DECL
-# define __LDBL_REDIR2_DECL(func) \
-   extern __typeof(__ ## func) __ ## func __asm (__ASMNAME ("__GI____ieee128___" #func));
-
-#endif
-
 #endif /* !defined _ISOMAC */
 
 #endif
diff --git a/misc/sys/cdefs.h b/misc/sys/cdefs.h
index 1beda4fc67..090aad6fed 100644
--- a/misc/sys/cdefs.h
+++ b/misc/sys/cdefs.h
@@ -592,6 +592,7 @@
 _Static_assert (0, "IEEE 128-bits long double requires redirection on this platform");
 #  endif /* __REDIRECT */
 # elif defined __LONG_DOUBLE_MATH_OPTIONAL && defined __NO_LONG_DOUBLE_MATH
+#  define __LDBL_COMPAT 1
 #  ifdef __REDIRECT
 #   define __REDIRECT_LDBL(name, proto, ieee128, compat) \
       __REDIRECT_LDBL1 (name, , , proto, compat)
@@ -626,50 +627,6 @@ _Static_assert (0, "Compat long double requires redirection on this platform");
 # define __REDIRECT_LDBL_COMPAT(name, proto)
 #endif
 
-#if __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
-# ifdef __REDIRECT
-
-/* Alias name defined automatically.  */
-#  define __LDBL_REDIR(name, proto) ... unused__ldbl_redir
-#  define __LDBL_REDIR_DECL(name) \
-  extern __typeof (name) name __asm (__ASMNAME ("__" #name "ieee128"));
-
-/* Alias name defined automatically, with leading underscores.  */
-#  define __LDBL_REDIR2_DECL(name) \
-  extern __typeof (__##name) __##name \
-    __asm (__ASMNAME ("__" #name "ieee128"));
-
-/* Alias name defined manually.  */
-#  define __LDBL_REDIR1(name, proto, alias) ... unused__ldbl_redir1
-#  define __LDBL_REDIR1_DECL(name, alias) \
-  extern __typeof (name) name __asm (__ASMNAME (#alias));
-
-#  define __LDBL_REDIR1_NTH(name, proto, alias) \
-  __REDIRECT_NTH (name, proto, alias)
-#  define __REDIRECT_NTH_LDBL(name, proto, alias) \
-  __LDBL_REDIR1_NTH (name, proto, __##alias##ieee128)
-
-# else
-_Static_assert (0, "IEEE 128-bits long double requires redirection on this platform");
-# endif
-#elif defined __LONG_DOUBLE_MATH_OPTIONAL && defined __NO_LONG_DOUBLE_MATH
-# define __LDBL_COMPAT 1
-# ifdef __REDIRECT
-#  define __LDBL_REDIR1(name, proto, alias) __REDIRECT (name, proto, alias)
-#  define __LDBL_REDIR(name, proto) \
-  __LDBL_REDIR1 (name, proto, __nldbl_##name)
-#  define __LDBL_REDIR1_NTH(name, proto, alias) __REDIRECT_NTH (name, proto, alias)
-#  define __LDBL_REDIR_NTH(name, proto) \
-  __LDBL_REDIR1_NTH (name, proto, __nldbl_##name)
-#  define __LDBL_REDIR2_DECL(name) \
-  extern __typeof (__##name) __##name __asm (__ASMNAME ("__nldbl___" #name));
-#  define __LDBL_REDIR1_DECL(name, alias) \
-  extern __typeof (name) name __asm (__ASMNAME (#alias));
-#  define __LDBL_REDIR_DECL(name) \
-  extern __typeof (name) name __asm (__ASMNAME ("__nldbl_" #name));
-# endif
-#endif
-
 /* __glibc_macro_warning (MESSAGE) issues warning MESSAGE.  This is
    intended for use in preprocessor macros.