diff --git a/migen/corelogic/misc.py b/migen/corelogic/misc.py
index 3b48bad4e..dfe44d4a6 100644
--- a/migen/corelogic/misc.py
+++ b/migen/corelogic/misc.py
@@ -31,3 +31,11 @@ def optree(op, operands, lb=None, ub=None, default=None):
 		return _Operator(op,
 			[optree(op, operands, lb, s, default),
 			optree(op, operands, s, ub, default)])
+
+def split(v, *counts):
+	r = []
+	offset = 0
+	for n in counts:
+		r.append(v[offset:offset+n])
+		offset += n
+	return tuple(r)