Fix flags for edges from/to entry/exit basic blocks.
W/o this patch I hit internal asserts when trying to
split the edge from entry block.
Index: gcc/cgraphunit.c
===================================================================
--- gcc/cgraphunit.c (revision 182237)
+++ gcc/cgraphunit.c (working copy)
@@ -1459,8 +1459,8 @@
/* Create BB for body of the function and connect it properly. */
bb = create_basic_block (NULL, (void *) 0, ENTRY_BLOCK_PTR);
- make_edge (ENTRY_BLOCK_PTR, bb, 0);
- make_edge (bb, EXIT_BLOCK_PTR, 0);
+ make_edge (ENTRY_BLOCK_PTR, bb, EDGE_FALLTHRU);
+ make_edge (bb, EXIT_BLOCK_PTR, EDGE_FALLTHRU);
return bb;
}
Index: gcc/ChangeLog
===================================================================
--- gcc/ChangeLog (revision 182237)
+++ gcc/ChangeLog (working copy)
@@ -1,3 +1,8 @@
+2011-12-12 Dmitry Vyukov <dvyu...@google.com>
+
+ * cgraphunit.c (init_lowered_empty_function):
+ Fix flags for new edges.
+
2011-12-12 Torvald Riegel <trie...@redhat.com>
* gimplify.c (voidify_wrapper_expr): Add default handling for
--
This patch is available for review at http://codereview.appspot.com/5486043
