re PR rtl-optimization/81595 (ICE: verify_flow_info failed (error: multiple…

re PR rtl-optimization/81595 (ICE: verify_flow_info failed (error: multiple hot/cold transitions found))

	PR rtl-optimization/81595
	* gcc.c-torture/compile/pr81595.c: New test.

From-SVN: r255516

gcc/testsuite/ChangeLog

+2017-12-08  Jakub Jelinek  <jakub@redhat.com>
+
+	PR rtl-optimization/81595
+	* gcc.c-torture/compile/pr81595.c: New test.
+
 2017-12-08  Michael Matz  <matz@suse.de>
 
 	Fix PR tree-optimization/83323

gcc/testsuite/gcc.c-torture/compile/pr81595.c

+/* PR rtl-optimization/81595 */
+
+void
+foo (__INTPTR_TYPE__ *x, int *y, int *z, int u, int v)
+{
+  while (u != 0)
+    {
+      if (*x != 0)
+	{
+	  int a = 1;
+ l1:
+	  if (*y != 0)
+	    {
+	      while (a < 2)
+		{
+		  a = 0;
+		  x = (__INTPTR_TYPE__ *)&x;
+ l2:
+		  ++a;
+		}
+	      while (*z != 0)
+		;
+	    }
+	  a /= 0;
+	}
+      else
+	{
+	  *z /= (*z != 0) ? 2 : 0;
+	  while (v < 1)
+	    {
+	      *y = 0;
+	      if (v != 0)
+		goto l1;
+	      ++v;
+	    }
+	  goto l2;
+	}
+    }
+}