re PR tree-optimization/32824 (Missed reduction vectorizer after store to global is LIM'd)

Fix PR32824.

2010-04-06  Changpeng Fang  <changpeng.fang@amd.com>

	PR middle-end/32824
	* passes.c (init_optimization_passes): Move pass_lim before
	pass_copy_prop and pass_dce_loop.

	* gcc.dg/vect/pr32824: New.

From-SVN: r158018

gcc/ChangeLog

+2010-04-06  Changpeng Fang  <changpeng.fang@amd.com>
+
+	PR middle-end/32824
+	* passes.c (init_optimization_passes): Move pass_lim before
+	pass_copy_prop and pass_dce_loop.
+
 2010-04-06  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/43667

gcc/passes.c

@@ -885,9 +885,9 @@ init_optimization_passes (void)
 	{
 	  struct opt_pass **p = &pass_tree_loop.pass.sub;
 	  NEXT_PASS (pass_tree_loop_init);
+	  NEXT_PASS (pass_lim);
 	  NEXT_PASS (pass_copy_prop);
 	  NEXT_PASS (pass_dce_loop);
-	  NEXT_PASS (pass_lim);
 	  NEXT_PASS (pass_tree_unswitch);
 	  NEXT_PASS (pass_scev_cprop);
 	  NEXT_PASS (pass_record_bounds);

gcc/testsuite/ChangeLog

+2010-04-06  Changpeng Fang  <changpeng.fang@amd.com>
+
+	PR middle-end/32824
+	* gcc.dg/vect/pr32824: New.
+
 2010-04-06  Tobias Burnus  <burnus@net-b.de>
 
 	PR fortran/18918

gcc/testsuite/gcc.dg/vect/pr32824.c

+/* { dg-do compile } */
+/* { dg-require-effective-target vect_int } */
+
+int a[16*100];
+int e;
+void foo(void)
+{
+  int i;
+  for(i = 0;i<16*100;i++)
+    e += a[i];
+}
+
+/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
+/* { dg-final { cleanup-tree-dump "vect" } } */
+