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

src/compiler/opcodes.h

 // Copyright 2013 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_OPCODES_H_
 #define V8_COMPILER_OPCODES_H_
 
 #include <iosfwd>
 
 // Opcodes for control operators.
@@ skipping 186 matching lines @@
   V(NumberClz32)                   \
   V(NumberCeil)                    \
   V(NumberFloor)                   \
   V(NumberLog)                     \
   V(NumberLog1p)                   \
   V(NumberRound)                   \
   V(NumberTrunc)                   \
   V(NumberToInt32)                 \
   V(NumberToUint32)                \
   V(NumberIsHoleNaN)               \
+  V(NumberSilenceNaN)              \
   V(StringFromCharCode)            \
   V(StringToNumber)                \
   V(ChangeTaggedSignedToInt32)     \
   V(ChangeTaggedToInt32)           \
   V(ChangeTaggedToUint32)          \
   V(ChangeTaggedToFloat64)         \
   V(ChangeInt31ToTaggedSigned)     \
   V(ChangeInt32ToTagged)           \
   V(ChangeUint32ToTagged)          \
   V(ChangeFloat64ToTagged)         \
@@ skipping 87 matching lines @@
   V(Int64Mul)                   \
   V(Int64Div)                   \
   V(Int64Mod)                   \
   V(Uint64Div)                  \
   V(Uint64Mod)                  \
   V(BitcastWordToTagged)        \
   V(TruncateFloat64ToWord32)    \
   V(ChangeFloat32ToFloat64)     \
   V(ChangeFloat64ToInt32)       \
   V(ChangeFloat64ToUint32)      \
+  V(Float64SilenceNaN)          \
   V(TruncateFloat64ToUint32)    \
   V(TruncateFloat32ToInt32)     \
   V(TruncateFloat32ToUint32)    \
   V(TryTruncateFloat32ToInt64)  \
   V(TryTruncateFloat64ToInt64)  \
   V(TryTruncateFloat32ToUint64) \
   V(TryTruncateFloat64ToUint64) \
   V(ChangeInt32ToFloat64)       \
   V(ChangeInt32ToInt64)         \
   V(ChangeUint32ToFloat64)      \
@@ skipping 325 matching lines @@
   }
 };
 
 std::ostream& operator<<(std::ostream&, IrOpcode::Value);
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_OPCODES_H_