Desugar bitwise negation into XOR and kill all UnaryOp stuff.

src/runtime.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 140 matching lines @@
   \
   F(StringAdd, 2, 1) \
   F(StringBuilderConcat, 3, 1) \
   F(StringBuilderJoin, 3, 1) \
   F(SparseJoinWithSeparator, 3, 1) \
   \
   /* Bit operations */ \
   F(NumberOr, 2, 1) \
   F(NumberAnd, 2, 1) \
   F(NumberXor, 2, 1) \
-  F(NumberNot, 1, 1) \
   \
   F(NumberShl, 2, 1) \
   F(NumberShr, 2, 1) \
   F(NumberSar, 2, 1) \
   \
   /* Comparisons */ \
   F(NumberEquals, 2, 1) \
   F(StringEquals, 2, 1) \
   \
   F(NumberCompare, 3, 1) \
@@ skipping 651 matching lines @@
 //---------------------------------------------------------------------------
 // Constants used by interface to runtime functions.
 
 class DeclareGlobalsEvalFlag:     public BitField<bool,         0, 1> {};
 class DeclareGlobalsNativeFlag:   public BitField<bool,         1, 1> {};
 class DeclareGlobalsLanguageMode: public BitField<LanguageMode, 2, 2> {};
 
 } }  // namespace v8::internal
 
 #endif  // V8_RUNTIME_H_