remove useless if-before-free tests

Change "if (E) free (E);" to "free (E);" everywhere except in the
libgo/, intl/, zlib/ and classpath/ directories.
Also transform equivalent variants like
"if (E != NULL) free (E);" and allow an extra cast on the
argument to free.  Otherwise, the tested and freed "E"
expressions must be identical, modulo white space.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@172785 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 2 insertions, 4 deletions

diff --git a/gcc/tree-data-ref.c b/gcc/tree-data-ref.c
index e01c67722f7..04606052225 100644
--- a/gcc/tree-data-ref.c
+++ b/gcc/tree-data-ref.c
@@ -5127,11 +5127,9 @@ free_rdg (struct graph *rdg)
       struct graph_edge *e;
 
       for (e = v->succ; e; e = e->succ_next)
-	if (e->data)
-	  free (e->data);
+	free (e->data);
 
-      if (v->data)
-	free (v->data);
+      free (v->data);
     }
 
   htab_delete (rdg->indices);