re PR tree-optimization/77362 ([graphite] ICE in sese_build_liveouts_use w/ -O2…

re PR tree-optimization/77362 ([graphite] ICE in sese_build_liveouts_use w/ -O2 -floop-nest-optimize)

2017-09-20  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/77362
	* gcc.dg/graphite/pr77362.c: New testcase.

From-SVN: r253006

gcc/testsuite/ChangeLog

 2017-09-20  Richard Biener  <rguenther@suse.de>
 
+	PR tree-optimization/77362
+	* gcc.dg/graphite/pr77362.c: New testcase.
+
+2017-09-20  Richard Biener  <rguenther@suse.de>
+
 	PR tree-optimization/82264
 	* gcc.dg/torture/pr82264.c: New testcase.
 

gcc/testsuite/gcc.dg/graphite/pr77362.c

+/* { dg-do compile } */
+/* { dg-options "-O2 -floop-nest-optimize" } */
+
+int mc[2];
+int f2, sk;
+short int hm;
+
+void
+zm (void)
+{
+  int k1;
+
+  for (k1 = 0; k1 < 2; ++k1)
+    {
+      for (sk = 0; sk < 2; ++sk)
+	mc[sk] = hm = ++f2;
+      if (hm >= 0)
+	++hm;
+    }
+}
+