re PR tree-optimization/68558 (Fails to SLP loop)

2016-06-08  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/68558
	* gcc.dg/vect/slp-44.c: New testcase.

From-SVN: r237216

gcc/testsuite/ChangeLog

 2016-06-08  Richard Biener  <rguenther@suse.de>
 
+	PR tree-optimization/68558
+	* gcc.dg/vect/slp-44.c: New testcase.
+
+2016-06-08  Richard Biener  <rguenther@suse.de>
+
 	* gcc.dg/vect/slp-43.c: New testcase.
 
 2016-06-08  Richard Biener  <rguenther@suse.de>

gcc/testsuite/gcc.dg/vect/slp-44.c

+/* { dg-do compile } */
+/* { dg-require-effective-target vect_int } */
+
+void IMB_double_fast_x (int * __restrict__ destf,
+			int * __restrict__ dest, int y,
+			int * __restrict__ p1f)
+{
+  int i;
+  for (i = y; i > 0; i--)
+    {
+      *dest++ = 0;
+      destf[0] = p1f[0];
+      destf[1] = p1f[1];
+      destf[2] = p1f[2];
+      destf[3] = p1f[3];
+      destf[4] = p1f[8];
+      destf[5] = p1f[9];
+      destf[6] = p1f[10];
+      destf[7] = p1f[11];
+      destf += 8;
+      p1f += 12;
+    }
+}
+
+/* { dg-final { scan-tree-dump "vectorized 1 loops" "vect" { target { vect_hw_misalign && vect_perm } } } } */