re PR middle-end/57904 (Bogus(?) "invokes undefined behavior" warning with…

re PR middle-end/57904 (Bogus(?) "invokes undefined behavior" warning with Fortran's finalization wrapper (gfortran.dg/class_48.f90))

	PR middle-end/57904
	* passes.def: Reorder pass_copy_prop, pass_unrolli, pass_ccp sequence
	so that pass_ccp runs first.

        PR middle-end/57904
	* gfortran.dg/pr57904.f90: New test.

From-SVN: r206723

gcc/ChangeLog

+2014-01-17  Jeff Law  <law@redhat.com>
+
+	PR middle-end/57904
+	* passes.def: Reorder pass_copy_prop, pass_unrolli, pass_ccp sequence
+	so that pass_ccp runs first.
+
 2014-01-17  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* config/i386/i386.c (ix86_lea_outperforms): Use TARGET_XXX.

gcc/passes.def

@@ -132,11 +132,11 @@ along with GCC; see the file COPYING3.  If not see
 	 They ensure memory accesses are not indirect wherever possible.  */
       NEXT_PASS (pass_strip_predict_hints);
       NEXT_PASS (pass_rename_ssa_copies);
-      NEXT_PASS (pass_copy_prop);
-      NEXT_PASS (pass_complete_unrolli);
       NEXT_PASS (pass_ccp);
       /* After CCP we rewrite no longer addressed locals into SSA
 	 form if possible.  */
+      NEXT_PASS (pass_copy_prop);
+      NEXT_PASS (pass_complete_unrolli);
       NEXT_PASS (pass_phiprop);
       NEXT_PASS (pass_forwprop);
       NEXT_PASS (pass_object_sizes);

gcc/testsuite/ChangeLog

+2014-01-17  Jeff Law  <law@redhat.com>
+
+        PR middle-end/57904
+	* gfortran.dg/pr57904.f90: New test.
+
 2014-01-17  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	PR c++/59269

gcc/testsuite/gfortran.dg/pr57904.f90

+! { dg-do compile }
+! { dg-options "-O2" }
+
+program test
+  call test2 ()
+contains
+  subroutine test2 ()
+    type t
+      integer, allocatable :: x
+    end type t
+
+    type t2
+      class(t), allocatable :: a
+    end type t2
+
+    type(t2) :: one, two
+
+    allocate (two%a)
+    one = two
+  end subroutine test2
+end program test
+