Commit 00894f1e authored by Michael Beck's avatar Michael Beck
Browse files

- re-enabled global-non-null test, but place Confirms only before Cmp nodes

[r22571]
parent d935aa26
......@@ -457,19 +457,9 @@ static void insert_non_null(ir_node *ptr, ir_node *block, env_t *env) {
ir_node *blk;
if (is_Confirm(succ)) {
/* beware of loops */
/* for now, we place a Confirm only in front of a Cmp */
if (! is_Cmp(succ))
continue;
}
if ((is_Load(succ) || is_Store(succ)) &&
get_nodes_block(succ) == block) {
/* Ignore Loads and Store in the same block for now,
because we are not sure if they are dominated.
This is not a bad restriction: if exception flow is
present, they are in other blocks either. */
continue;
}
pos = get_edge_src_pos(edge);
blk = get_effective_use_block(succ, pos);
......@@ -549,7 +539,7 @@ void construct_confirms(ir_graph *irg) {
env.num_eq = 0;
env.num_non_null = 0;
if (0 && get_opt_global_null_ptr_elimination()) {
if (get_opt_global_null_ptr_elimination()) {
/* do global NULL test elimination */
irg_walk_graph(irg, insert_Confirm, NULL, &env);
} else {
......
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