2004-12-13 Daniel Berlin <dberlin@dberlin.org>

	* tree-ssa-loop-ch.c (copy_loop_headers): Loop can be null.
	* tree-ssa-loop-im.c (determine_lsm): tree_root may not have a real
	inner loop.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@92048 138bc75d-0d04-0410-961f-82ee72b054a4

3 files changed, 11 insertions, 0 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 0a14a0d2fd7..da3f3defac6 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2004-12-13  Daniel Berlin  <dberlin@dberlin.org>
+
+	* tree-ssa-loop-ch.c (copy_loop_headers): Loop can be null.
+	* tree-ssa-loop-im.c (determine_lsm): tree_root may not have a real
+	inner loop.
+
 2004-12-12  Diego Novillo  <dnovillo@redhat.com>
 
 	* tree-gimple.c (get_base_address): Update documentation.
diff --git a/gcc/tree-ssa-loop-ch.c b/gcc/tree-ssa-loop-ch.c
index 71d1bf2162c..e307528b2a8 100644
--- a/gcc/tree-ssa-loop-ch.c
+++ b/gcc/tree-ssa-loop-ch.c
@@ -152,6 +152,8 @@ copy_loop_headers (void)
       int limit = 20;
 
       loop = loops->parray[i];
+      if (!loop)
+	continue;
       header = loop->header;
 
       /* If the loop is already a do-while style one (either because it was
diff --git a/gcc/tree-ssa-loop-im.c b/gcc/tree-ssa-loop-im.c
index 16e477c9cc5..05970f8d2e1 100644
--- a/gcc/tree-ssa-loop-im.c
+++ b/gcc/tree-ssa-loop-im.c
@@ -1252,6 +1252,9 @@ determine_lsm (struct loops *loops)
   struct loop *loop;
   basic_block bb;
 
+  if (!loops->tree_root->inner)
+    return;
+
   /* Create a UID for each statement in the function.  Ordering of the
      UIDs is not important for this pass.  */
   max_stmt_uid = 0;