obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 50 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/vect/vect-35.c b/gcc/testsuite/gcc.dg/vect/vect-35.c
new file mode 100644
index 000000000..0f4284a62
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/vect-35.c
@@ -0,0 +1,50 @@
+/* { dg-require-effective-target vect_int } */
+
+#include <stdarg.h>
+#include "tree-vect.h"
+
+#define N 16
+ 
+__attribute__ ((noinline))
+int main1 ()
+{  
+  union {
+    unsigned char a[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
+    unsigned char b[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
+  } s;
+  int i;
+
+  /* Initialization.  */
+  for (i = 0; i < N; i++)
+    {
+      s.b[i] = i;
+    }
+
+  /* Dependence analysis fails cause s.a and s.b may overlap.
+     Use runtime aliasing test with versioning.  */
+  for (i = 0; i < N; i++)
+    {
+      s.a[i] = s.b[i] + 1;
+    }
+
+  /* check results:  */
+  for (i = 0; i < N; i++)
+    {
+      if (s.a[i] != i + 1)
+	abort ();
+    }
+
+  return 0;
+}
+
+int main (void)
+{ 
+  check_vect ();
+  
+  return main1 ();
+} 
+
+
+/* { dg-final { scan-tree-dump-times "vectorized 2 loops" 1 "vect"  { xfail { ia64-*-* sparc*-*-* } } } } */
+/* { dg-final { scan-tree-dump-times "can't determine dependence between" 1 "vect" } } */
+/* { dg-final { cleanup-tree-dump "vect" } } */