[PATCH] Fix vect_create_epilog_for_reduction memory leaks (PR middle-end/56461)

[Jakub Jelinek]

Hi!

vect_create_epilog_for_reduction leaks memory both from the inner_phis
vector not being released for double_reduc, and also for stmt_vec_info
it creates (because those are added for stmts added into exit_bb, i.e.
after loop, which destroy_loop_vec_info doesn't free).  Fixed thusly,
bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk?

2013-03-04  Jakub Jelinek  <ja...@redhat.com>

        PR middle-end/56461
        * tree-vect-stmts.c (free_stmt_vec_info_vec): Call
        free_stmt_vec_info on any left-over stmt_vec_info in the vector.
        * tree-vect-loop.c (vect_create_epilog_for_reduction): Release
        inner_phis vector.

--- gcc/tree-vect-stmts.c.jj    2013-03-04 11:07:33.000000000 +0100
+++ gcc/tree-vect-stmts.c       2013-03-04 12:14:16.111393716 +0100
@@ -5969,6 +5969,11 @@ init_stmt_vec_info_vec (void)
 void
 free_stmt_vec_info_vec (void)
 {
+  unsigned int i;
+  vec_void_p info;
+  FOR_EACH_VEC_ELT (stmt_vec_info_vec, i, info)
+    if (info != NULL)
+      free_stmt_vec_info (STMT_VINFO_STMT ((stmt_vec_info) info));
   gcc_assert (stmt_vec_info_vec.exists ());
   stmt_vec_info_vec.release ();
 }
--- gcc/tree-vect-loop.c.jj     2013-03-04 11:01:48.000000000 +0100
+++ gcc/tree-vect-loop.c        2013-03-04 12:17:09.934351015 +0100
@@ -4487,8 +4487,9 @@ vect_finalize_reduction:
     }
 
   scalar_results.release ();
+  inner_phis.release ();
   new_phis.release ();
-} 
+}
 
 
 /* Function vectorizable_reduction.

        Jakub