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

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

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/instruction-scheduler.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
@@ skipping 86 matching lines @@
     case kS390_Uint64ToFloat32:
     case kS390_Uint64ToDouble:
     case kS390_Int32ToFloat32:
     case kS390_Int32ToDouble:
     case kS390_Uint32ToFloat32:
     case kS390_Uint32ToDouble:
     case kS390_Float32ToInt32:
     case kS390_Float32ToUint32:
     case kS390_Float32ToUint64:
     case kS390_Float32ToDouble:
+    case kS390_Float64SilenceNaN:
     case kS390_DoubleToInt32:
     case kS390_DoubleToUint32:
     case kS390_Float32ToInt64:
     case kS390_DoubleToInt64:
     case kS390_DoubleToUint64:
     case kS390_DoubleToFloat32:
     case kS390_DoubleExtractLowWord32:
     case kS390_DoubleExtractHighWord32:
     case kS390_DoubleInsertLowWord32:
     case kS390_DoubleInsertHighWord32:
@@ skipping 38 matching lines @@
 }
 
 int InstructionScheduler::GetInstructionLatency(const Instruction* instr) {
   // TODO(all): Add instruction cost modeling.
   return 1;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8