1 files changed, 6 insertions, 0 deletions

diff --git a/src/arch/avx2.h b/src/arch/avx2.h
index 5857493..15ce02a 100644
--- a/src/arch/avx2.h
+++ b/src/arch/avx2.h
@@ -34,6 +34,12 @@ popcount_u32(uint32_t x)
         return _mm_popcnt_u32(x);
 }
 
+STATIC_INLINE int
+popcount_u64(uint64_t x)
+{
+        return _mm_popcnt_u64(x);
+}
+
 STATIC void
 pieces(cube_t cube[static 1], uint8_t c[static 8], uint8_t e[static 12])
 {