diff --git a/libguile/lightening/lightening.h b/libguile/lightening/lightening.h
index 5331a8de7..cb838c5ed 100644
--- a/libguile/lightening/lightening.h
+++ b/libguile/lightening/lightening.h
@@ -110,6 +110,18 @@ typedef struct jit_reloc
 #define jit_class(bits)		((bits) & 0xffff0000)
 #define jit_regno(bits)		((bits) & 0x00007fff)
 
+static inline jit_bool_t
+jit_same_gprs (jit_gpr_t a, jit_gpr_t b)
+{
+  return a.bits == b.bits;
+}
+
+static inline jit_bool_t
+jit_same_fprs (jit_fpr_t a, jit_fpr_t b)
+{
+  return a.bits == b.bits;
+}
+
 static inline jit_bool_t
 jit_gpr_is_callee_save (jit_gpr_t reg)
 {