* tree-cfg.c (split_edge_bb_loc): Don't disallow placement at
dest_prev if the edge is complex.
From-SVN: r151606
2009-09-10 Richard Henderson <rth@redhat.com>
+ * tree-cfg.c (split_edge_bb_loc): Don't disallow placement at
+ dest_prev if the edge is complex.
+
* tree-cfg.c (is_ctrl_stmt): Use a switch.
* tree-cfg.c (gimple_can_merge_blocks_p): Move label and
split_edge_bb_loc (edge edge_in)
{
basic_block dest = edge_in->dest;
+ basic_block dest_prev = dest->prev_bb;
- if (dest->prev_bb && find_edge (dest->prev_bb, dest))
- return edge_in->src;
- else
- return dest->prev_bb;
+ if (dest_prev)
+ {
+ edge e = find_edge (dest_prev, dest);
+ if (e && !(e->flags & EDGE_COMPLEX))
+ return edge_in->src;
+ }
+ return dest_prev;
}
/* Split a (typically critical) edge EDGE_IN. Return the new block.