X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fopt%2Fopt_confirms.h;h=23baa76b777e2ecc42f893b693fd46188629453d;hb=3ee397d14a0564b2d7e2e141bc1d3aca5c011f0f;hp=4d134d81824ae893ae9a68ed40a2b01c4b24a6ec;hpb=05e879d227e8ec8712a4ffc1c3d8bf82ca583f09;p=libfirm

diff --git a/ir/opt/opt_confirms.h b/ir/opt/opt_confirms.h
index 4d134d818..23baa76b7 100644
--- a/ir/opt/opt_confirms.h
+++ b/ir/opt/opt_confirms.h
@@ -32,7 +32,6 @@ typedef enum _value_classify {
                              no signed zero exists or < 0 else */
 } value_classify;
 
-
 /**
  * Check, if the value of a node is != 0.
  *
@@ -43,6 +42,18 @@ typedef enum _value_classify {
  */
 int value_not_zero(ir_node *n);
 
+/**
+ * Check, if the value of a node cannot represent a NULL pointer.
+ *
+ * - If sel_based_null_check_elim is enabled, all
+ *   Sel nodes can be skipped.
+ * - A SymConst(entity) is NEVER a NULL pointer
+ * - Confirms are evaluated
+ *
+ * @param n  a node representing the value
+ */
+int value_not_null(ir_node *n);
+
 /**
  * Check, if the value of a node can be confirmed >= 0 or <= 0,
  * If the mode of the value did not honor signed zeros, else