1 files changed, 83 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/vect/vect-outer-5.c b/gcc/testsuite/gcc.dg/vect/vect-outer-5.c
new file mode 100644
index 000000000..f5027d626
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/vect-outer-5.c
@@ -0,0 +1,83 @@
+/* { dg-require-effective-target vect_float } */
+/* { dg-add-options quad_vectors } */
+
+#include <stdarg.h>
+#include <signal.h>
+#include "tree-vect.h"
+
+#define N 64
+#define MAX 42
+
+extern void abort(void); 
+
+__attribute__ ((noinline)) 
+int main1 ()
+{  
+  float A[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
+  float B[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
+  float C[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
+  float D[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
+  float E[4] = {0,1,2,480};
+  float s;
+
+  int i, j;
+
+  for (i = 0; i < N; i++)
+    {
+      A[i] = i;
+      B[i] = i;
+      C[i] = i;
+      D[i] = i;
+    }
+
+  /* Outer-loop 1: Vectorizable with respect to dependence distance. */
+  for (i = 0; i < N-20; i++)
+    {
+      s = 0;
+      for (j=0; j<N; j+=4)
+        s += C[j];
+      A[i] = A[i+20] + s;
+    }
+
+  /* check results:  */
+  for (i = 0; i < N-20; i++)
+    {
+      s = 0;
+      for (j=0; j<N; j+=4)
+        s += C[j];
+      if (A[i] != D[i+20] + s)
+        abort ();
+    }
+
+  /* Outer-loop 2: Not vectorizable because of dependence distance. */
+  for (i = 0; i < 4; i++)
+    {
+      s = 0;
+      for (j=0; j<N; j+=4)
+	s += C[j];
+      B[i+3] = B[i] + s;
+    }
+
+  /* check results:  */
+  for (i = 0; i < 4; i++)
+    {
+      if (B[i] != E[i])
+	abort ();
+    }
+
+  return 0;
+}
+
+int main ()
+{
+  check_vect ();
+  return main1();
+}
+
+/* NOTE: We temporarily xfail the following check until versioning for
+   aliasing is fixed to avoid versioning when the dependence distance
+   is known.  */
+/* { dg-final { scan-tree-dump-times "not vectorized: possible dependence between data-refs" 1 "vect" { xfail *-*-* } } } */
+/* { dg-final { scan-tree-dump-times "OUTER LOOP VECTORIZED" 1 "vect" } } */
+/* { dg-final { scan-tree-dump-times "zero step in outer loop." 1 "vect" { xfail vect_no_align } } } */
+/* { dg-final { cleanup-tree-dump "vect" } } */