add helper is_pow2()

Add is_pow2() to test if a pseudo is a power of 2.

Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/simplify.c b/simplify.c
index d729b390..0d9391e2 100644
--- a/simplify.c
+++ b/simplify.c
@@ -53,6 +53,15 @@
 // ^^^^^^^^^
 
 ///
+// check if a pseudo is a power of 2
+static inline bool is_pow2(pseudo_t src)
+{
+	if (src->type != PSEUDO_VAL)
+		return false;
+	return is_power_of_2(src->value);
+}
+
+///
 // find the trivial parent for a phi-source
 static struct basic_block *phi_parent(struct basic_block *source, pseudo_t pseudo)
 {