[WIP] NumberToString operator in TF.

src/runtime/runtime.h

 // Copyright 2012 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_RUNTIME_RUNTIME_H_
 #define V8_RUNTIME_RUNTIME_H_
 
 #include <memory>
 
 #include "src/allocation.h"
@@ skipping 332 matching lines @@
   F(LiveEditReplaceFunctionCode, 2, 1)              \
   F(LiveEditFunctionSetScript, 2, 1)                \
   F(LiveEditReplaceRefToNestedFunction, 3, 1)       \
   F(LiveEditPatchFunctionPositions, 2, 1)           \
   F(LiveEditCheckAndDropActivations, 3, 1)          \
   F(LiveEditCompareStrings, 2, 1)                   \
   F(LiveEditRestartFrame, 2, 1)
 
 #define FOR_EACH_INTRINSIC_MATHS(F) F(GenerateRandomNumbers, 1, 1)
 
-#define FOR_EACH_INTRINSIC_NUMBERS(F)  \
-  F(IsValidSmi, 1, 1)                  \
-  F(StringToNumber, 1, 1)              \
-  F(StringParseInt, 2, 1)              \
-  F(StringParseFloat, 1, 1)            \
-  F(NumberToString, 1, 1)              \
-  F(NumberToStringSkipCache, 1, 1)     \
-  F(NumberToSmi, 1, 1)                 \
-  F(SmiLexicographicCompare, 2, 1)     \
-  F(MaxSmi, 0, 1)                      \
-  F(IsSmi, 1, 1)                       \
-  F(GetRootNaN, 0, 1)                  \
-  F(GetHoleNaNUpper, 0, 1)             \
+#define FOR_EACH_INTRINSIC_NUMBERS(F)   \
+  F(IsValidSmi, 1, 1)                   \
+  F(StringToNumber, 1, 1)               \
+  F(StringParseInt, 2, 1)               \
+  F(StringParseFloat, 1, 1)             \
+  F(NumberToString, -1 /* 1 or 2 */, 1) \
+  F(NumberToStringSkipCache, 1, 1)      \
+  F(NumberToSmi, 1, 1)                  \
+  F(SmiLexicographicCompare, 2, 1)      \
+  F(MaxSmi, 0, 1)                       \
+  F(IsSmi, 1, 1)                        \
+  F(GetRootNaN, 0, 1)                   \
+  F(GetHoleNaNUpper, 0, 1)              \
   F(GetHoleNaNLower, 0, 1)
 
 #define FOR_EACH_INTRINSIC_OBJECT(F)                 \
   F(GetPrototype, 1, 1)                              \
   F(ObjectHasOwnProperty, 2, 1)                      \
   F(InternalSetPrototype, 2, 1)                      \
   F(SetPrototype, 2, 1)                              \
   F(OptimizeObjectForAddingMultipleProperties, 2, 1) \
   F(GetProperty, 2, 1)                               \
   F(GetGlobal, 3, 1)                                 \
@@ skipping 754 matching lines @@
 
 class DeclareGlobalsEvalFlag : public BitField<bool, 0, 1> {};
 class DeclareGlobalsNativeFlag : public BitField<bool, 1, 1> {};
 STATIC_ASSERT(LANGUAGE_END == 3);
 class DeclareGlobalsLanguageMode : public BitField<LanguageMode, 2, 2> {};
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_RUNTIME_RUNTIME_H_