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authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2019-02-05 17:35:12 -0200
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2019-02-27 10:00:37 -0300
commit81a14439417552324ec6ca71f65ddf8e7cdd51c7 (patch)
tree3300f5fec6acc1ef4c95c333bf165ebb51248f68 /sysdeps/x86_64
parent39ef07441910c2d2f8c02579e808862194b9a23b (diff)
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wcsmbs: optimize wcscat
This patch rewrites wcscat using wcslen and wcscpy. This is similar to the optimization done on strcat by 6e46de42fe. The strcpy changes are mainly to add the internal alias to avoid PLT calls. Checked on x86_64-linux-gnu and a build against the affected architectures. * include/wchar.h (__wcscpy): New prototype. * sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy-ppc32.c (__wcscpy): Route internal symbol to generic implementation. * sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy.c (wcscpy): Add internal __wcscpy alias. * sysdeps/powerpc/powerpc64/multiarch/wcscpy.c (wcscpy): Likewise. * sysdeps/s390/wcscpy.c (wcscpy): Likewise. * sysdeps/x86_64/multiarch/wcscpy.c (wcscpy): Likewise. * wcsmbs/wcscpy.c (wcscpy): Add * sysdeps/x86_64/multiarch/wcscpy-c.c (WCSCPY): Adjust macro to use generic implementation. * wcsmbs/wcscat.c (wcscat): Rewrite using wcslen and wcscpy.
Diffstat (limited to 'sysdeps/x86_64')
-rw-r--r--sysdeps/x86_64/multiarch/wcscpy-c.c4
-rw-r--r--sysdeps/x86_64/multiarch/wcscpy.c11
2 files changed, 10 insertions, 5 deletions
diff --git a/sysdeps/x86_64/multiarch/wcscpy-c.c b/sysdeps/x86_64/multiarch/wcscpy-c.c
index a51a83a9be..26d6984e9b 100644
--- a/sysdeps/x86_64/multiarch/wcscpy-c.c
+++ b/sysdeps/x86_64/multiarch/wcscpy-c.c
@@ -1,5 +1,5 @@
#if IS_IN (libc)
-# define wcscpy __wcscpy_sse2
+# define WCSCPY __wcscpy_sse2
#endif
-#include "wcsmbs/wcscpy.c"
+#include <wcsmbs/wcscpy.c>
diff --git a/sysdeps/x86_64/multiarch/wcscpy.c b/sysdeps/x86_64/multiarch/wcscpy.c
index 101a585358..96151b4963 100644
--- a/sysdeps/x86_64/multiarch/wcscpy.c
+++ b/sysdeps/x86_64/multiarch/wcscpy.c
@@ -19,9 +19,9 @@
/* Define multiple versions only for the definition in libc. */
#if IS_IN (libc)
-# define wcscpy __redirect_wcscpy
+# define __wcscpy __redirect_wcscpy
# include <wchar.h>
-# undef wcscpy
+# undef __wcscpy
# define SYMBOL_NAME wcscpy
# include <init-arch.h>
@@ -40,5 +40,10 @@ IFUNC_SELECTOR (void)
return OPTIMIZE (sse2);
}
-libc_ifunc_redirected (__redirect_wcscpy, wcscpy, IFUNC_SELECTOR ());
+libc_ifunc_redirected (__redirect_wcscpy, __wcscpy, IFUNC_SELECTOR ());
+weak_alias (__wcscpy, wcscpy)
+# ifdef SHARED
+__hidden_ver1 (__wcscpy, __GI___wcscpy, __redirect_wcscpy)
+ __attribute__((visibility ("hidden"))) __attribute_copy__ (wcscpy);
+# endif
#endif