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-rw-r--r--gcc/tree-optimize.c56
1 files changed, 51 insertions, 5 deletions
diff --git a/gcc/tree-optimize.c b/gcc/tree-optimize.c
index 3f4471a468c..50dd22b451f 100644
--- a/gcc/tree-optimize.c
+++ b/gcc/tree-optimize.c
@@ -237,9 +237,26 @@ struct tree_opt_pass pass_free_cfg_annotations =
0, /* todo_flags_finish */
0 /* letter */
};
-/* Pass: fixup_cfg - IPA passes or compilation of earlier functions might've
- changed some properties - such as marked functions nothrow. Remove now
- redundant edges and basic blocks. */
+
+/* Return true if BB has at least one abnormal outgoing edge. */
+
+static inline bool
+has_abnormal_outgoing_edge_p (basic_block bb)
+{
+ edge e;
+ edge_iterator ei;
+
+ FOR_EACH_EDGE (e, ei, bb->succs)
+ if (e->flags & EDGE_ABNORMAL)
+ return true;
+
+ return false;
+}
+
+/* Pass: fixup_cfg. IPA passes, compilation of earlier functions or inlining
+ might have changed some properties, such as marked functions nothrow or
+ added calls that can potentially go to non-local labels. Remove redundant
+ edges and basic blocks, and create new ones if necessary. */
static unsigned int
execute_fixup_cfg (void)
@@ -262,8 +279,37 @@ execute_fixup_cfg (void)
}
tree_purge_dead_eh_edges (bb);
}
-
+
+ if (current_function_has_nonlocal_label)
+ FOR_EACH_BB (bb)
+ {
+ for (bsi = bsi_start (bb); !bsi_end_p (bsi); bsi_next (&bsi))
+ {
+ tree stmt = bsi_stmt (bsi);
+ if (tree_can_make_abnormal_goto (stmt))
+ {
+ if (stmt == bsi_stmt (bsi_last (bb)))
+ {
+ if (!has_abnormal_outgoing_edge_p (bb))
+ make_abnormal_goto_edges (bb, true);
+ }
+ else
+ {
+ edge e = split_block (bb, stmt);
+ bb = e->src;
+ make_abnormal_goto_edges (bb, true);
+ }
+ break;
+ }
+ }
+ }
+
cleanup_tree_cfg ();
+
+ /* Dump a textual representation of the flowgraph. */
+ if (dump_file)
+ dump_tree_cfg (dump_file, dump_flags);
+
return 0;
}
@@ -280,7 +326,7 @@ struct tree_opt_pass pass_fixup_cfg =
0, /* properties_provided */
0, /* properties_destroyed */
0, /* todo_flags_start */
- TODO_dump_func, /* todo_flags_finish */
+ 0, /* todo_flags_finish */
0 /* letter */
};