diff --git a/src/hotspot/share/opto/superword.cpp b/src/hotspot/share/opto/superword.cpp
index 266a5874cea..510cb1b51de 100644
--- a/src/hotspot/share/opto/superword.cpp
+++ b/src/hotspot/share/opto/superword.cpp
@@ -2593,6 +2593,8 @@ static bool can_subword_truncate(Node* in, const Type* type) {
   case Op_ReverseI:
   case Op_CountLeadingZerosI:
   case Op_CountTrailingZerosI:
+  case Op_IsFiniteF:
+  case Op_IsFiniteD:
   case Op_IsInfiniteF:
   case Op_IsInfiniteD:
   case Op_ExtractS: