Commit 6f333e27 authored by Matthias Braun's avatar Matthias Braun
Browse files

do not kill unreachable code in gcse

parent 0ff22b7c
......@@ -182,15 +182,20 @@ int optimize_graph_df(ir_graph *irg)
state = edges_assure(irg);
if (get_opt_global_cse())
set_irg_pinned(irg, op_pin_state_floats);
set_irg_state(irg, IR_GRAPH_STATE_BAD_BLOCK);
/* Clean the value_table in irg for the CSE. */
new_identities(irg);
if (get_irg_dom_state(irg) == dom_consistent)
irg_block_walk_graph(irg, NULL, kill_dead_blocks, NULL);
if (get_opt_global_cse()) {
set_irg_pinned(irg, op_pin_state_floats);
} else {
/* The following enables unreachable code elimination (=Blocks may be
* Bad). We cannot enable it in global_cse nodes since we can't
* determine a nodes block there and therefore can't remove all code
* in unreachable blocks */
set_irg_state(irg, IR_GRAPH_STATE_BAD_BLOCK);
if (get_irg_dom_state(irg) == dom_consistent)
irg_block_walk_graph(irg, NULL, kill_dead_blocks, NULL);
}
/* invalidate info */
set_irg_outs_inconsistent(irg);
......
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