1 files changed, 123 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/vect/slp-1.c b/gcc/testsuite/gcc.dg/vect/slp-1.c
new file mode 100644
index 000000000..6e95b6166
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/slp-1.c
@@ -0,0 +1,123 @@
+/* { dg-require-effective-target vect_int } */
+
+#include <stdarg.h>
+#include "tree-vect.h"
+
+#define N 128 
+
+int
+main1 ()
+{
+  int i;
+  unsigned short out[N*8];
+
+  for (i = 0; i < N; i++)
+    {
+      out[i*4] = 8;
+      out[i*4 + 1] = 18;
+      out[i*4 + 2] = 28;
+      out[i*4 + 3] = 38;
+    }
+
+  /* check results:  */
+  for (i = 0; i < N; i++)
+    {
+      if (out[i*4] != 8 
+         || out[i*4 + 1] != 18
+         || out[i*4 + 2] != 28
+         || out[i*4 + 3] != 38)
+	abort ();
+    }
+
+  for (i = 0; i < N; i++)
+    {
+      out[i*8] = 8;
+      out[i*8 + 1] = 7;
+      out[i*8 + 2] = 81;
+      out[i*8 + 3] = 28;
+      out[i*8 + 4] = 18;
+      out[i*8 + 5] = 85;
+      out[i*8 + 6] = 5;
+      out[i*8 + 7] = 4;
+    }
+
+  /* check results:  */
+  for (i = 0; i < N; i++)
+    {
+      if (out[i*8] != 8
+         || out[i*8 + 1] != 7
+         || out[i*8 + 2] != 81
+         || out[i*8 + 3] != 28
+         || out[i*8 + 4] != 18
+         || out[i*8 + 5] != 85
+         || out[i*8 + 6] != 5
+         || out[i*8 + 7] != 4)
+        abort ();
+    }
+
+  /* SLP with unrolling by 8.  */
+  for (i = 0; i < N; i++)
+    {
+      out[i*5] = 8;
+      out[i*5 + 1] = 7;
+      out[i*5 + 2] = 81;
+      out[i*5 + 3] = 28;
+      out[i*5 + 4] = 18;
+    }
+
+  /* check results:  */
+  for (i = 0; i < N; i++)
+    {
+      if (out[i*5] != 8
+         || out[i*5 + 1] != 7
+         || out[i*5 + 2] != 81
+         || out[i*5 + 3] != 28
+         || out[i*5 + 4] != 18)
+        abort ();
+    }
+
+  /* SLP with unrolling by 8.  */
+  for (i = 0; i < N/2; i++)
+    {
+      out[i*9] = 8;
+      out[i*9 + 1] = 7;
+      out[i*9 + 2] = 81;
+      out[i*9 + 3] = 28;
+      out[i*9 + 4] = 18;
+      out[i*9 + 5] = 85;
+      out[i*9 + 6] = 5;
+      out[i*9 + 7] = 4;
+      out[i*9 + 8] = 14;
+    }
+
+  /* check results:  */
+  for (i = 0; i < N/2; i++)
+    {
+      if (out[i*9] != 8
+         || out[i*9 + 1] != 7
+         || out[i*9 + 2] != 81
+         || out[i*9 + 3] != 28
+         || out[i*9 + 4] != 18
+         || out[i*9 + 5] != 85
+         || out[i*9 + 6] != 5
+         || out[i*9 + 7] != 4
+         || out[i*9 + 8] != 14)
+        abort ();
+    }
+
+  return 0;
+}
+
+int main (void)
+{
+  check_vect ();
+
+  main1 ();
+
+  return 0;
+}
+
+/* { dg-final { scan-tree-dump-times "vectorized 4 loops" 1 "vect"  } } */
+/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 4 "vect"  } } */
+/* { dg-final { cleanup-tree-dump "vect" } } */
+