ir_node *pred = get_cf_op(get_Block_cfgpred(node, i));
pred = get_nodes_block(pred);
if(get_irn_opcode(pred) == iro_Block) {
- /* recursion */
- irg_block_walk_2(pred, pre, post, env);
+ /* recursion */
+ irg_block_walk_2(pred, pre, post, env);
}
else {
- assert(get_irn_opcode(pred) == iro_Bad);
+ assert(get_irn_opcode(pred) == iro_Bad);
}
}
if (is_no_Block(node)) block = get_nodes_block(node); else block = node;
assert(get_irn_opcode(block) == iro_Block);
irg_block_walk_2(block, pre, post, env);
+
/* keepalive: the endless loops ... */
if (get_irn_op(node) == op_End) {
int arity = get_irn_arity(node);
if (get_irn_op(pred) == op_Block)
irg_block_walk_2(pred, pre, post, env);
}
+ /* Sometimes the blocks died, but are still reachable through Phis.
+ * Make sure the algorithms that try to remove these reach them. */
+ for (i = 0; i < arity; i++) {
+ pred = get_irn_n(node, i);
+ if (get_irn_op(pred) == op_Phi) {
+ ir_node *block = get_nodes_block(pred);
+
+ if (! is_Bad(block))
+ irg_block_walk_2(block, pre, post, env);
+ }
+ }
}
return;