re PR tree-optimization/42284 (failing tree check in graphite-sese-to-poly.c for 164.gzip)

	PR middle-end/42284
	* testsuite/gcc.dg/graphite/pr42284.c: New.

From-SVN: r155219

gcc/testsuite/ChangeLog

+2009-12-14  Sebastian Pop  <sebpop@gmail.com>
+
+	PR middle-end/42284
+	* testsuite/gcc.dg/graphite/pr42284.c: New.
+
 2009-12-13  Richard Guenther  <rguenther@suse.de>
 
 	PR tree-optimization/42357

gcc/testsuite/gcc.dg/graphite/pr42284.c

+/* { dg-options "-O2 -fgraphite-identity" } */
+
+int
+huft_build (unsigned *b)
+{
+  int k;
+  for (k = 0; k <= 10; k++)
+    if (foo ());
+}
+int
+inflate_fixed ()
+{
+  int i;
+  unsigned l[288];
+  for (i = 0; i < 144; i++)
+    l[i] = 8;
+  for (; i < 256; i++)
+    l[i] = 9;
+  for (; i < 280; i++)
+    l[i] = 7;
+  for (; i < 288; i++)
+    l[i] = 8;
+  if ((i = huft_build (l)) != 0)
+    return i;
+  for (i = 0; i < 30; i++)
+    l[i] = 5;
+}