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/no-vfa-vect-79.c b/gcc/testsuite/gcc.dg/vect/no-vfa-vect-79.c
new file mode 100644
index 000000000..1a694b33e
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/no-vfa-vect-79.c
@@ -0,0 +1,50 @@
+/* { dg-require-effective-target vect_float } */
+
+#include <stdarg.h>
+#include "tree-vect.h"
+
+#define N 16
+
+float fa[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
+float fb[N+4] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 7.0, 9.0, 10.0, 11.0, 12.0, 13.0, 14.0, 15.0, 16.0, 17.0, 18.0, 19.0};
+float fc[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 7.5, 9.5, 10.5, 11.5, 12.5, 13.5, 14.5, 15.5};
+
+/* Like vect-80.c but the pointers are not annotated as restricted,
+   and therefore can't be antialiased.  */
+
+__attribute__ ((noinline)) int
+main1 (float *pa, float *pb, float *pc)
+{
+  int i;
+  float *q = pb + 4;
+
+  for (i = 0; i < N; i++)
+    {
+      pa[i] = q[i] * pc[i];
+    }
+
+  for (i = 0; i < N; i++)
+    {
+      if (pa[i] != q[i] * pc[i])
+	abort();
+    }
+  
+  return 0;
+}
+
+
+int main (void)
+{ 
+  check_vect ();
+
+  main1 (fa, fb, fc);
+
+  return 0;	
+}
+
+/* Currently the loops fail to vectorize due to aliasing problems.
+  If/when the aliasing problems are resolved, unalignment may
+  prevent vectorization on some targets.  */
+/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect"  { xfail *-*-* } } } */
+/* { dg-final { scan-tree-dump-times "can't determine dependence between" 1 "vect" } } */
+/* { dg-final { cleanup-tree-dump "vect" } } */