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authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2023-01-10 18:00:57 -0300
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2023-02-06 16:19:35 -0300
commit685e844a97ba0506dee575ba530b170edaa59fed (patch)
tree99800df5d60b81d2de6e8d038a0ea8bc8fa9c80f /sysdeps/powerpc
parent350d8d13661a863e6b189f02d876fa265fe71302 (diff)
downloadglibc-685e844a97ba0506dee575ba530b170edaa59fed.tar.gz
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string: Improve generic strchrnul
New algorithm read the first aligned address and mask off the unwanted
bytes (this strategy is similar to arch-specific  implementations used
on powerpc, sparc, and sh).

The loop now read word-aligned address and check using the has_zero_eq
function.

Checked on x86_64-linux-gnu, i686-linux-gnu, powerpc64-linux-gnu,
and powerpc-linux-gnu by removing the arch-specific assembly
implementation and disabling multi-arch (it covers both LE and BE
for 64 and 32 bits).

Co-authored-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Noah Goldstein <goldstein.w.n@gmail.com>
Diffstat (limited to 'sysdeps/powerpc')
-rw-r--r--sysdeps/powerpc/powerpc32/power4/multiarch/strchrnul-ppc32.c4
1 files changed, 0 insertions, 4 deletions
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/strchrnul-ppc32.c b/sysdeps/powerpc/powerpc32/power4/multiarch/strchrnul-ppc32.c
index 88ce5dfffa..da03ac7c04 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/strchrnul-ppc32.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/strchrnul-ppc32.c
@@ -19,10 +19,6 @@
 #include <string.h>
 
 #define STRCHRNUL  __strchrnul_ppc
-
-#undef weak_alias
-#define weak_alias(a,b )
-
 extern __typeof (strchrnul) __strchrnul_ppc attribute_hidden;
 
 #include <string/strchrnul.c>