2009-10-15 Sebastian Pop <sebastian.pop@amd.com>

	* graphite-blocking.c (lst_do_strip_mine): Avoid strip mining the
	root of the LST.
	* graphite-interchange.c (lst_do_interchange): Avoid interchanging
	the root of the LST.
	* graphite-poly.c (scop_to_lst): Fix LST sequence in an outermost
	fake loop.
	(print_lst): Print the root of LST in a different format.
	* graphite-poly.h (lst_depth): Adjust to include the root of the LST.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@154593 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 6 insertions, 0 deletions

diff --git a/gcc/graphite-poly.h b/gcc/graphite-poly.h
index 64a082e4125..8165d35fb49 100644
--- a/gcc/graphite-poly.h
+++ b/gcc/graphite-poly.h
@@ -714,6 +714,12 @@ static inline int
 lst_depth (lst_p lst)
 {
   if (!lst)
+    return -2;
+
+  /* The depth of the outermost "fake" loop is -1.  This outermost
+     loop does not have a loop father and it is just a container, as
+     in the loop representation of GCC.  */
+  if (!LST_LOOP_FATHER (lst))
     return -1;
 
   return lst_depth (LST_LOOP_FATHER (lst)) + 1;