diff --git a/mie/include/mie/ir/register.h b/mie/include/mie/ir/register.h
index 24c3a19..c4a46af 100644
--- a/mie/include/mie/ir/register.h
+++ b/mie/include/mie/ir/register.h
@@ -62,8 +62,13 @@ struct mie_register {
 };
 
 extern struct mie_vector_ops mie_register_vector_ops;
+extern struct mie_vector_ops mie_register_use_vector_ops;
 
 MIE_API void mie_register_move(struct mie_register *dest, struct mie_register *src);
 MIE_API void mie_register_cleanup(struct mie_register *reg);
 
+MIE_API void mie_register_use_move(
+	struct mie_register_use *dest, struct mie_register_use *src);
+MIE_API void mie_register_use_cleanup(struct mie_register_use *reg);
+
 #endif
diff --git a/mie/ir/register.c b/mie/ir/register.c
index a3158eb..4ca3732 100644
--- a/mie/ir/register.c
+++ b/mie/ir/register.c
@@ -1,13 +1,14 @@
 #include <assert.h>
+#include <blue/core/queue.h>
 #include <mie/ir/register.h>
 
-static enum mie_status cleanup(void *p)
+static enum mie_status reg_cleanup(void *p)
 {
 	mie_register_cleanup(p);
 	return MIE_SUCCESS;
 }
 
-static enum mie_status move(void *dst, void *src, size_t itemsz)
+static enum mie_status reg_move(void *dst, void *src, size_t itemsz)
 {
 	assert(itemsz == sizeof(struct mie_register));
 	struct mie_register *dest_reg = dst, *src_reg = src;
@@ -15,9 +16,23 @@ static enum mie_status move(void *dst, void *src, size_t itemsz)
 	return MIE_SUCCESS;
 }
 
+static enum mie_status reg_use_cleanup(void *p)
+{
+	mie_register_use_cleanup(p);
+	return MIE_SUCCESS;
+}
+
+static enum mie_status reg_use_move(void *dst, void *src, size_t itemsz)
+{
+	assert(itemsz == sizeof(struct mie_register_use));
+	struct mie_register_use *dest_reg = dst, *src_reg = src;
+	mie_register_use_move(dest_reg, src_reg);
+	return MIE_SUCCESS;
+}
+
 struct mie_vector_ops mie_register_vector_ops = {
-	.v_destroy = cleanup,
-	.v_move = move,
+	.v_destroy = reg_cleanup,
+	.v_move = reg_move,
 };
 
 void mie_register_move(struct mie_register *dest, struct mie_register *src)
@@ -35,3 +50,20 @@ void mie_register_cleanup(struct mie_register *reg)
 		mie_name_destroy(&reg->reg_name);
 	}
 }
+
+void mie_register_use_move(
+	struct mie_register_use *dest, struct mie_register_use *src)
+{
+	memmove(dest, src, sizeof *dest);
+
+	if (src->u_reg) {
+		b_queue_move(&src->u_reg->reg_use, &src->u_entry, &dest->u_entry);
+	}
+}
+
+void mie_register_use_cleanup(struct mie_register_use *use)
+{
+	if (use->u_reg) {
+		b_queue_delete(&use->u_reg->reg_use, &use->u_entry);
+	}
+}