[patch] rs6000: plug a leak

[Steven Bosscher]

Hello Bill,

This patch plugs a leak in rs6000.c:rs6000_density_test(). You have to
free the array that get_loop_body returns. Noticed while going over
all uses of get_loop_body (it's a common mistake to leak the return
array).

Patch is completely untested because I don't know when/how this
function is used. You've added this function:

2012-07-31  Bill Schmidt  <...>

        * config/rs6000/rs6000.c (rs6000_builtin_vectorization_cost): Revise
        costs for vec_perm and vec_promote_demote down to more natural values.
        (struct _rs6000_cost_data): New data structure.
-->        (rs6000_density_test): New function

so I suppose you know what it's for and how to test this patch :-)

Could you test this for me and commit it if nothing strange happens?

Thanks,

Ciao!
Steven



Index: config/rs6000/rs6000.c
===================================================================
--- config/rs6000/rs6000.c      (revision 190601)
+++ config/rs6000/rs6000.c      (working copy)
@@ -3509,6 +3509,7 @@ rs6000_density_test (rs6000_cost_data *d
            not_vec_cost++;
        }
     }
+  free (bbs);

   density_pct = (vec_cost * 100) / (vec_cost + not_vec_cost);