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-rw-r--r--test/expression/simplifications.py9
1 files changed, 9 insertions, 0 deletions
diff --git a/test/expression/simplifications.py b/test/expression/simplifications.py
index 3e2e5177..a4e839cf 100644
--- a/test/expression/simplifications.py
+++ b/test/expression/simplifications.py
@@ -395,6 +395,15 @@ to_test = [(ExprInt(1, 32) - ExprInt(1, 32), ExprInt(0, 32)),
      ExprInt(0xc6, 8)),
     (ExprOp("imod", ExprInt(0x0123, 16), ExprInt(0xfffb, 16))[:8],
      ExprInt(0x01, 8)),
+    (ExprOp("cnttrailzeros", ExprInt(0x2, 32)),
+     ExprInt(0x1, 32)),
+    (ExprOp("cnttrailzeros", ExprInt(0x0, 32)),
+     ExprInt(0x20, 32)),
+    (ExprOp("cntleadzeros", ExprInt(0x2, 32)),
+     ExprInt(30, 32)),
+    (ExprOp("cntleadzeros", ExprInt(0x0, 32)),
+     ExprInt(0x20, 32)),
+
 
     (ExprCompose(ExprInt(0x0123, 16), ExprMem(a + ExprInt(0x40, a.size), 16),
                  ExprMem(a + ExprInt(0x42, a.size), 16), ExprInt(0x0321, 16)),