Commit fb5957cb authored by Christoph Mallon's avatar Christoph Mallon
Browse files

Initially mark the end block as reachable and set the bad node to bottom (i.e. undefined).

parent 79337033
......@@ -772,6 +772,12 @@ void fixpoint_vrp(ir_graph* const irg)
blocks in Firm. Moreover build phi list. */
irg_walk_anchors(irg, clear_links, build_phi_lists, NULL);
{ ir_tarval* const f = get_tarval_b_false();
ir_tarval* const t = get_tarval_b_true();
set_bitinfo(get_irg_bad(irg), f, t); /* Undefined. */
set_bitinfo(get_irg_end_block(irg), t, f); /* Reachable. */
}
/* TODO Improve iteration order. Best is reverse postorder in data flow
* direction and respecting loop nesting for fastest convergence. */
irg_walk_blkwise_dom_top_down(irg, NULL, first_round, q);
......
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