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clarify some node comments
[libfirm]
/
ir
/
opt
/
opt_confirms.c
diff --git
a/ir/opt/opt_confirms.c
b/ir/opt/opt_confirms.c
index
611ee19
..
99c6183
100644
(file)
--- a/
ir/opt/opt_confirms.c
+++ b/
ir/opt/opt_confirms.c
@@
-167,9
+167,7
@@
FIRM_API int value_not_zero(const ir_node *n, ir_node_cnst_ptr *confirm)
/*
* Check, if the value of a node cannot represent a NULL pointer.
*
/*
* Check, if the value of a node cannot represent a NULL pointer.
*
- * - Casts are skipped
- * - If sel_based_null_check_elim is enabled, all
- * Sel nodes can be skipped.
+ * - Casts are skipped, Sels are skipped
* - A SymConst(entity) is NEVER a NULL pointer
* - Confirms are evaluated
*/
* - A SymConst(entity) is NEVER a NULL pointer
* - Confirms are evaluated
*/
@@
-185,11
+183,9
@@
FIRM_API int value_not_null(const ir_node *n, ir_node_cnst_ptr *confirm)
return 1;
assert(mode_is_reference(get_irn_mode(n)));
return 1;
assert(mode_is_reference(get_irn_mode(n)));
- if (get_opt_sel_based_null_check_elim()) {
- /* skip all Sel nodes and Cast's */
- while (is_Sel(n)) {
- n = skip_Cast(get_Sel_ptr(n));
- }
+ /* skip all Sel nodes and Cast's */
+ while (is_Sel(n)) {
+ n = skip_Cast(get_Sel_ptr(n));
}
while (1) {
if (is_Cast(n)) { n = get_Cast_op(n); continue; }
}
while (1) {
if (is_Cast(n)) { n = get_Cast_op(n); continue; }