added firm_ycomp header include

[libfirm] / ir / tv / tv.h

diff --git a/ir/tv/tv.h b/ir/tv/tv.h
index f26b5d4..e4224e9 100644 (file)
--- a/ir/tv/tv.h
+++ b/ir/tv/tv.h
@@ -578,7 +578,9 @@ typedef enum _tarval_classification_t {
 
 /**
  * Identifying tarvals values for algebraic simplifications.
- * @param tv
+ *
+ * @param tv        the tarval
+ *
  * @return
  *   - TV_CLASSIFY_NULL    for additive neutral or the NULL tarval for reference modes,
  *   - TV_CLASSIFY_ONE     for multiplicative neutral,
@@ -587,6 +589,12 @@ typedef enum _tarval_classification_t {
  */
 tarval_classification_t classify_tarval(tarval *tv);
 
+/**
+ * Returns non-zero if a given (integer) tarval has only one single bit
+ * set.
+ */
+int is_single_bit_tarval(tarval *tv);
+
 /**
  * Output of tarvals to a buffer.
  */