diff --git a/regressions/Makefile b/regressions/Makefile
index 3195e52..6b369a8 100644
--- a/regressions/Makefile
+++ b/regressions/Makefile
@@ -4,6 +4,7 @@ DIR=array	\
     bitmap	\
     brlock	\
     bytelock	\
+    cc		\
     cohort	\
     epoch	\
     fifo	\
@@ -27,6 +28,7 @@ DIR=array	\
 
 all:
 	$(MAKE) -C ./ck_array/validate all
+	$(MAKE) -C ./ck_cc/validate all
 	$(MAKE) -C ./ck_cohort/validate all
 	$(MAKE) -C ./ck_cohort/benchmark all
 	$(MAKE) -C ./ck_bitmap/validate all
@@ -72,6 +74,7 @@ all:
 
 clean:
 	$(MAKE) -C ./ck_array/validate clean
+	$(MAKE) -C ./ck_cc/validate clean
 	$(MAKE) -C ./ck_pflock/validate clean
 	$(MAKE) -C ./ck_pflock/benchmark clean
 	$(MAKE) -C ./ck_tflock/validate clean
diff --git a/regressions/ck_cc/validate/ck_cc.c b/regressions/ck_cc/validate/ck_cc.c
new file mode 100644
index 0000000..b9035ea
--- /dev/null
+++ b/regressions/ck_cc/validate/ck_cc.c
@@ -0,0 +1,18 @@
+#include <ck_pr.h>
+#include <stdio.h>
+
+#include "../../common.h"
+
+int
+main(void)
+{
+	unsigned int x;
+
+	ck_pr_store_uint(&x, 4);
+
+	printf("     ffs = %d\n", ck_cc_ffs(x));
+	printf("     clz = %d\n", ck_cc_clz(x));
+	printf("     ctz = %d\n", ck_cc_ctz(x));
+	printf("popcount = %d\n", ck_cc_popcount(x));
+	return 0;
+}