Add fuzzing support for inline runtime functions

src/x64/codegen-x64.h

 // Copyright 2010 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 319 matching lines @@
   RegisterAllocator* allocator() const { return allocator_; }
 
   CodeGenState* state() { return state_; }
   void set_state(CodeGenState* state) { state_ = state; }
 
   void AddDeferred(DeferredCode* code) { deferred_.Add(code); }
 
   bool in_spilled_code() const { return in_spilled_code_; }
   void set_in_spilled_code(bool flag) { in_spilled_code_ = flag; }
 
+  // If the name is an inline runtime function call return the number of
+  // expected arguments. Otherwise return -1.
+  static int InlineRuntimeCallArgumentsCount(Handle<String> name);
+
  private:
   // Construction/Destruction
   explicit CodeGenerator(MacroAssembler* masm);
 
   // Accessors
   inline bool is_eval();
   inline Scope* scope();
 
   // Generating deferred code.
   void ProcessDeferred();
@@ skipping 149 matching lines @@
   void CallApplyLazy(Expression* applicand,
                      Expression* receiver,
                      VariableProxy* arguments,
                      int position);
 
   void CheckStack();
 
   struct InlineRuntimeLUT {
     void (CodeGenerator::*method)(ZoneList<Expression*>*);
     const char* name;
+    int nargs;
   };
   static InlineRuntimeLUT* FindInlineRuntimeLUT(Handle<String> name);
   bool CheckForInlineRuntimeCall(CallRuntime* node);
   static bool PatchInlineRuntimeEntry(Handle<String> name,
                                       const InlineRuntimeLUT& new_entry,
                                       InlineRuntimeLUT* old_entry);
   void ProcessDeclarations(ZoneList<Declaration*>* declarations);
 
   static Handle<Code> ComputeCallInitialize(int argc, InLoopFlag in_loop);
 
@@ skipping 11 matching lines @@
   void GenerateIsRegExp(ZoneList<Expression*>* args);
   void GenerateIsObject(ZoneList<Expression*>* args);
   void GenerateIsFunction(ZoneList<Expression*>* args);
   void GenerateIsUndetectableObject(ZoneList<Expression*>* args);
 
   // Support for construct call checks.
   void GenerateIsConstructCall(ZoneList<Expression*>* args);
 
   // Support for arguments.length and arguments[?].
   void GenerateArgumentsLength(ZoneList<Expression*>* args);
-  void GenerateArgumentsAccess(ZoneList<Expression*>* args);
+  void GenerateArguments(ZoneList<Expression*>* args);
 
   // Support for accessing the class and value fields of an object.
   void GenerateClassOf(ZoneList<Expression*>* args);
   void GenerateValueOf(ZoneList<Expression*>* args);
   void GenerateSetValueOf(ZoneList<Expression*>* args);
 
   // Fast support for charCodeAt(n).
   void GenerateFastCharCodeAt(ZoneList<Expression*>* args);
 
   // Fast support for string.charAt(n) and string[n].
@@ skipping 17 matching lines @@
 
   // Fast support for StringCompare.
   void GenerateStringCompare(ZoneList<Expression*>* args);
 
   // Support for direct calls from JavaScript to native RegExp code.
   void GenerateRegExpExec(ZoneList<Expression*>* args);
 
   // Fast support for number to string.
   void GenerateNumberToString(ZoneList<Expression*>* args);
 
-  // Fast support for Math.pow().
+  // Fast call to math functions.
   void GenerateMathPow(ZoneList<Expression*>* args);
-
-  // Fast call to math functions.
   void GenerateMathSin(ZoneList<Expression*>* args);
   void GenerateMathCos(ZoneList<Expression*>* args);
-
-  // Fast case for sqrt
   void GenerateMathSqrt(ZoneList<Expression*>* args);
 
 // Simple condition analysis.
   enum ConditionAnalysis {
     ALWAYS_TRUE,
     ALWAYS_FALSE,
     DONT_KNOW
   };
   ConditionAnalysis AnalyzeCondition(Expression* cond);
 
@@ skipping 264 matching lines @@
   Major MajorKey() { return StringCompare; }
   int MinorKey() { return 0; }
 
   void Generate(MacroAssembler* masm);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_X64_CODEGEN_X64_H_