[wasm] Do float constant folding if the origin is not wasm

src/compiler/machine-operator-reducer.h

 // Copyright 2014 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.
 
 #ifndef V8_COMPILER_MACHINE_OPERATOR_REDUCER_H_
 #define V8_COMPILER_MACHINE_OPERATOR_REDUCER_H_
 
 #include "src/base/compiler-specific.h"
 #include "src/compiler/graph-reducer.h"
 #include "src/compiler/machine-operator.h"
 #include "src/globals.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 // Forward declarations.
 class CommonOperatorBuilder;
 class JSGraph;
 
 
 // Performs constant folding and strength reduction on nodes that have
 // machine operators.
 class V8_EXPORT_PRIVATE MachineOperatorReducer final
     : public NON_EXPORTED_BASE(Reducer) {
  public:
-  explicit MachineOperatorReducer(JSGraph* jsgraph);
+  explicit MachineOperatorReducer(JSGraph* jsgraph,
+                                  bool allow_signalling_nan = true);
   ~MachineOperatorReducer();
 
   Reduction Reduce(Node* node) override;
 
  private:
   Node* Float32Constant(volatile float value);
   Node* Float64Constant(volatile double value);
   Node* Int32Constant(int32_t value);
   Node* Int64Constant(int64_t value);
   Node* Uint32Constant(uint32_t value) {
@@ skipping 59 matching lines @@
   Reduction ReduceFloat64InsertHighWord32(Node* node);
   Reduction ReduceFloat64Compare(Node* node);
   Reduction ReduceFloat64RoundDown(Node* node);
 
   Graph* graph() const;
   JSGraph* jsgraph() const { return jsgraph_; }
   CommonOperatorBuilder* common() const;
   MachineOperatorBuilder* machine() const;
 
   JSGraph* jsgraph_;
+  bool allow_signalling_nan_;
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_MACHINE_OPERATOR_REDUCER_H_