re PR tree-optimization/81369 (ICE in generate_code_for_partition)

	PR target/81369
	* tree-loop-distribution.c (merge_dep_scc_partitions): Sink call to
	function sort_partitions_by_post_order.

	gcc/testsuite
	* gcc.dg/tree-ssa/pr81369.c: New.

From-SVN: r250269

gcc/ChangeLog

 2017-07-17  Bin Cheng  <bin.cheng@arm.com>
 
+	PR target/81369
+	* tree-loop-distribution.c (merge_dep_scc_partitions): Sink call to
+	function sort_partitions_by_post_order.
+
+2017-07-17  Bin Cheng  <bin.cheng@arm.com>
+
 	PR tree-optimization/81374
 	* tree-loop-distribution.c (pass_loop_distribution::execute): Record
 	the max index of basic blocks, rather than number of basic blocks.

gcc/testsuite/ChangeLog

+2017-07-17  Bin Cheng  <bin.cheng@arm.com>
+
+	PR target/81369
+	* gcc.dg/tree-ssa/pr81369.c: New.
+
 2017-07-17  Claudiu Zissulescu  <claziss@synopsys.com>
 
 	* gcc.target/arc/pr9000674901.c: New file.

gcc/testsuite/gcc.dg/tree-ssa/pr81369.c

+/* { dg-do compile } */
+/* { dg-options "-O2 -ftree-loop-distribution" } */
+
+typedef __PTRDIFF_TYPE__ intptr_t;
+int wo;
+
+void
+sy (long int *as)
+{
+  for (;;)
+    {
+      *as = wo;
+      while (as < (long int *) (void *) 2)
+        {
+          int *y9;
+
+          if (wo != 0)
+            *y9 = (int) (intptr_t) &wo;
+          wo /= (wo != 0 && *y9 != 0);
+          ++as;
+        }
+    }
+}

gcc/tree-loop-distribution.c

@@ -1997,8 +1997,9 @@ merge_dep_scc_partitions (struct graph *rdg,
 		data->partition = NULL;
 	      }
 	}
-      sort_partitions_by_post_order (pg, partitions);
     }
+
+  sort_partitions_by_post_order (pg, partitions);
   gcc_assert (partitions->length () == (unsigned)num_sccs);
   free_partition_graph_vdata (pg);
   free_graph (pg);