+2004-11-09 Jeff Law <law@redhat.com>
+
+ * cfganal.c (flow_dfs_compute_reverse_execute): Accept new
+ argument holding last unvisited block. Start search for
+ unvisited blocks at LAST_UNVISITED rather than EXIT_BLOCK.
+ (connect_infinite_loops_to_exit): Supply last unvisited block
+ to flow_dfs_compute_reverse_execute.
+
2004-10-22 Aldy Hernandez <aldyh@redhat.com>
* config/rs6000/rs6000.md (fix_truncdfsi2): Handle e500
static void flow_dfs_compute_reverse_init (depth_first_search_ds);
static void flow_dfs_compute_reverse_add_bb (depth_first_search_ds,
basic_block);
-static basic_block flow_dfs_compute_reverse_execute (depth_first_search_ds);
+static basic_block flow_dfs_compute_reverse_execute (depth_first_search_ds,
+ basic_block);
static void flow_dfs_compute_reverse_finish (depth_first_search_ds);
static bool flow_active_insn_p (rtx);
\f
void
connect_infinite_loops_to_exit (void)
{
- basic_block unvisited_block;
+ basic_block unvisited_block = EXIT_BLOCK_PTR;
struct depth_first_search_dsS dfs_ds;
/* Perform depth-first search in the reverse graph to find nodes
/* Repeatedly add fake edges, updating the unreachable nodes. */
while (1)
{
- unvisited_block = flow_dfs_compute_reverse_execute (&dfs_ds);
+ unvisited_block = flow_dfs_compute_reverse_execute (&dfs_ds,
+ unvisited_block);
if (!unvisited_block)
break;
available. */
static basic_block
-flow_dfs_compute_reverse_execute (depth_first_search_ds data)
+flow_dfs_compute_reverse_execute (depth_first_search_ds data,
+ basic_block last_unvisited)
{
basic_block bb;
edge e;
}
/* Determine if there are unvisited basic blocks. */
- FOR_BB_BETWEEN (bb, EXIT_BLOCK_PTR, NULL, prev_bb)
+ FOR_BB_BETWEEN (bb, last_unvisited, NULL, prev_bb)
if (!TEST_BIT (data->visited_blocks, bb->index - (INVALID_BLOCK + 1)))
return bb;