[Isolates] Merge crankshaft (r5922 from bleeding_edge).

src/token.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 220 matching lines @@
   }
 
   static bool IsBinaryOp(Value op) {
     return COMMA <= op && op <= MOD;
   }
 
   static bool IsCompareOp(Value op) {
     return EQ <= op && op <= IN;
   }
 
+  static bool IsOrderedCompareOp(Value op) {
+    return op == LT || op == LTE || op == GT || op == GTE;
+  }
+
+  static Value NegateCompareOp(Value op) {
+    ASSERT(IsCompareOp(op));
+    switch (op) {
+      case EQ: return NE;
+      case NE: return EQ;
+      case EQ_STRICT: return NE_STRICT;
+      case LT: return GTE;
+      case GT: return LTE;
+      case LTE: return GT;
+      case GTE: return LT;
+      default:
+        return op;
+    }
+  }
+
+  static Value InvertCompareOp(Value op) {
+    ASSERT(IsCompareOp(op));
+    switch (op) {
+      case EQ: return NE;
+      case NE: return EQ;
+      case EQ_STRICT: return NE_STRICT;
+      case LT: return GT;
+      case GT: return LT;
+      case LTE: return GTE;
+      case GTE: return LTE;
+      default:
+        return op;
+    }
+  }
+
   static bool IsBitOp(Value op) {
     return (BIT_OR <= op && op <= SHR) || op == BIT_NOT;
   }
 
   static bool IsUnaryOp(Value op) {
     return (NOT <= op && op <= VOID) || op == ADD || op == SUB;
   }
 
   static bool IsCountOp(Value op) {
     return op == INC || op == DEC;
@@ skipping 21 matching lines @@
  private:
   static const char* const name_[NUM_TOKENS];
   static const char* const string_[NUM_TOKENS];
   static const int8_t precedence_[NUM_TOKENS];
   static const char token_type[NUM_TOKENS];
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_TOKEN_H_