diff --git a/llvm/lib/CodeGen/AsmPrinter/DebugLocEntry.h b/llvm/lib/CodeGen/AsmPrinter/DebugLocEntry.h
--- a/llvm/lib/CodeGen/AsmPrinter/DebugLocEntry.h
+++ b/llvm/lib/CodeGen/AsmPrinter/DebugLocEntry.h
@@ -126,7 +126,7 @@
       : Expression(Expr), ValueLocEntries(Locs.begin(), Locs.end()),
         IsVariadic(IsVariadic) {
 #ifndef NDEBUG
-    assert(cast<DIExpression>(Expr)->isValid() ||
+    assert(Expr->isValid() ||
            !any_of(Locs, [](auto LE) { return LE.isLocation(); }));
     if (!IsVariadic) {
       assert(ValueLocEntries.size() == 1);