re PR tree-optimization/82436 (465.tonto ICE in vect_get_slp_vect_defs, at tree-vect-slp.c:3410)

2017-10-25  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/82436
	* gcc.dg/torture/pr82436-2.c: New testcase.

From-SVN: r254073

gcc/testsuite/ChangeLog

+2017-10-25  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/82436
+	* gcc.dg/torture/pr82436-2.c: New testcase.
+
 2017-10-25  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	PR c++/71820

gcc/testsuite/gcc.dg/torture/pr82436-2.c

+/* { dg-do compile } */
+
+enum
+{
+  a, b, c, d,  e,  f,  g,  h,  j,  k
+};
+
+int l;
+void m (short *s)
+{
+  short n, o, p;
+  float(*q)[k];
+  int r, i;
+  while (l > 0)
+    r = l;
+  for (;;)
+    {
+      i = 0;
+      for (; i < r; i++)
+	{
+	    {
+	      float ab = q[i][a];
+	      int i = ab;
+	      p = i;
+	    }
+	  ((short *) s)[0] = p;
+	    {
+	      float ab = q[i][b];
+	      int i = ab;
+	      o = i;
+	    }
+	  ((short *) s)[1] = o;
+	    {
+	      float ab = q[i][f];
+	      int i = ab;
+	      n = i;
+	    }
+	  ((short *) s)[2] = n;
+	  float ab = q[i][g];
+	  int i = ab;
+	  ((short *) s)[3] = i;
+	  s = (short *) s + 4;
+	}
+    }
+}