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, 49 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/vect/slp-reduc-6.c b/gcc/testsuite/gcc.dg/vect/slp-reduc-6.c
new file mode 100644
index 000000000..ccfb888fc
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/slp-reduc-6.c
@@ -0,0 +1,49 @@
+/* { dg-require-effective-target vect_int } */
+
+#include <stdarg.h>
+#include "tree-vect.h"
+
+#define N 128 
+
+int a[N], b[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
+
+/* Vectorization of reduction. Loop-aware SLP is not possible, because of 
+   different arrays.  */
+
+__attribute__ ((noinline))
+int main1 (int n, int res0, int res1)
+{
+  int i;
+  int sum0 = 0, sum1 = 0;
+
+  for (i = 0; i < n; i++) {
+    sum1 += a[2*i];
+    sum0 += b[2*i];
+  }
+
+  /* Check results:  */
+  if (sum0 != res0
+      || sum1 != res1)
+    abort ();
+
+  return 0;
+}
+
+int main (void)
+{
+  int i;
+
+  check_vect ();
+
+  for (i = 0; i < N; i++)
+    a[i] = b[i] = i;
+
+  main1 (N/2, 4032, 4032);
+  return 0;
+}
+
+/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 2 "vect" { xfail { vect_no_int_add || { ! vect_unpack } } } } } */
+/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 0 "vect" } } */
+/* { dg-final { scan-tree-dump-times "different interleaving chains in one node" 1 "vect" { target { ! vect_no_int_add } } } } */
+/* { dg-final { cleanup-tree-dump "vect" } } */
+