Version 2.2.23...

src/codegen.h

 // Copyright 2006-2008 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 57 matching lines @@
 //   AnalyzeCondition
 //   CodeForFunctionPosition
 //   CodeForReturnPosition
 //   CodeForStatementPosition
 //   CodeForDoWhileConditionPosition
 //   CodeForSourcePosition
 
 
 // Mode to overwrite BinaryExpression values.
 enum OverwriteMode { NO_OVERWRITE, OVERWRITE_LEFT, OVERWRITE_RIGHT };
+enum UnaryOverwriteMode { UNARY_OVERWRITE, UNARY_NO_OVERWRITE };
 
 // Types of uncatchable exceptions.
 enum UncatchableExceptionType { OUT_OF_MEMORY, TERMINATION };
 
 
 #if V8_TARGET_ARCH_IA32
 #include "ia32/codegen-ia32.h"
 #elif V8_TARGET_ARCH_X64
 #include "x64/codegen-x64.h"
 #elif V8_TARGET_ARCH_ARM
@@ skipping 319 matching lines @@
   InstanceofStub() { }
 
   void Generate(MacroAssembler* masm);
 
  private:
   Major MajorKey() { return Instanceof; }
   int MinorKey() { return 0; }
 };
 
 
+enum NegativeZeroHandling {
+  kStrictNegativeZero,
+  kIgnoreNegativeZero
+};
+
+
 class GenericUnaryOpStub : public CodeStub {
  public:
-  GenericUnaryOpStub(Token::Value op, bool overwrite)
-      : op_(op), overwrite_(overwrite) { }
+  GenericUnaryOpStub(Token::Value op,
+                     UnaryOverwriteMode overwrite,
+                     NegativeZeroHandling negative_zero = kStrictNegativeZero)
+      : op_(op), overwrite_(overwrite), negative_zero_(negative_zero) { }
 
  private:
   Token::Value op_;
-  bool overwrite_;
+  UnaryOverwriteMode overwrite_;
+  NegativeZeroHandling negative_zero_;
 
-  class OverwriteField: public BitField<int, 0, 1> {};
-  class OpField: public BitField<Token::Value, 1, kMinorBits - 1> {};
+  class OverwriteField: public BitField<UnaryOverwriteMode, 0, 1> {};
+  class NegativeZeroField: public BitField<NegativeZeroHandling, 1, 1> {};
+  class OpField: public BitField<Token::Value, 2, kMinorBits - 2> {};
 
   Major MajorKey() { return GenericUnaryOp; }
   int MinorKey() {
-    return OpField::encode(op_) | OverwriteField::encode(overwrite_);
+    return OpField::encode(op_) |
+           OverwriteField::encode(overwrite_) |
+           NegativeZeroField::encode(negative_zero_);
   }
 
   void Generate(MacroAssembler* masm);
 
   const char* GetName();
 };
 
 
 enum NaNInformation {
   kBothCouldBeNaN,
@@ skipping 416 matching lines @@
   StringCharFromCodeGenerator char_from_code_generator_;
 
   DISALLOW_COPY_AND_ASSIGN(StringCharAtGenerator);
 };
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CODEGEN_H_