S390: [turbofan] Prevent storing signalling NaNs into holey double arrays.

src/compiler/s390/instruction-selector-s390.cc

Index: src/compiler/s390/instruction-selector-s390.cc
diff --git a/src/compiler/s390/instruction-selector-s390.cc b/src/compiler/s390/instruction-selector-s390.cc
index 1f67bfed232c5e8ca58a5f0ece51306bb32ced36..1b1bd2f624d0295072ab7fae6b0df26e83bd13d2 100644
--- a/src/compiler/s390/instruction-selector-s390.cc
+++ b/src/compiler/s390/instruction-selector-s390.cc
@@ -1179,6 +1179,10 @@ void InstructionSelector::VisitFloat32Max(Node* node) { UNREACHABLE(); }
 
 void InstructionSelector::VisitFloat64Max(Node* node) { UNREACHABLE(); }
 
+void InstructionSelector::VisitFloat64SilenceNaN(Node* node) {
+  VisitRR(this, kS390_Float64SilenceNaN, node);
+}
+
 void InstructionSelector::VisitFloat32Min(Node* node) { UNREACHABLE(); }
 
 void InstructionSelector::VisitFloat64Min(Node* node) { UNREACHABLE(); }