More fixes for unsafe compiler optimization

GCC 4.9 -ftree-loop-distribute-patterns now may transform loops in
memcpy.  Add the alias to internal GLIBC symbol to avoid PLT creation.

diff --git a/ChangeLog b/ChangeLog
index 6bacb5c25d17b5c1b0910591d7c0832dcd56b9d1..054072fb36ca301d7ed2337987d8340fd7987a8c 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2014-04-30  Adhemerval Zanella  <azanella@linux.vnet.ibm.com>
+
+       * * sysdeps/generic/symbol-hacks.h (memcpy): Add internal alias.
+
 2014-04-30  Yang Yingliang  <yangyingliang@huawei.com>
 
        * nptl/pthread_cond_broadcast.c (__pthread_cond_broadcast):

diff --git a/sysdeps/generic/symbol-hacks.h b/sysdeps/generic/symbol-hacks.h
index 9eaf014ff2414cfd4b27f89fc094a54c3b4d8403..6bec24b7a017e27ecfc4b388faa05135ca038aab 100644 (file)
--- a/sysdeps/generic/symbol-hacks.h
+++ b/sysdeps/generic/symbol-hacks.h
@@ -3,4 +3,5 @@
 #if !defined __ASSEMBLER__ && !defined NOT_IN_libc && defined SHARED
 asm ("memmove = __GI_memmove");
 asm ("memset = __GI_memset");
+asm ("memcpy = __GI_memcpy");
 #endif