8362972: C2 fails with unexpected node in SuperWord truncation: IsFiniteF, IsFiniteD

RealFYang · RealFYang · commit 1482b6a0dba1 · 2025-09-23T00:29:14.000Z
Backport-of: 9f796da3774b2e2f92dca178fdccd93989919256
diff --git 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:
