Add fuzzing support for inline runtime functions

src/ia32/codegen-ia32.h

Index: src/ia32/codegen-ia32.h
===================================================================
--- src/ia32/codegen-ia32.h	(revision 4085)
+++ src/ia32/codegen-ia32.h	(working copy)
@@ -339,6 +339,10 @@
   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);
@@ -522,6 +526,7 @@
   struct InlineRuntimeLUT {
     void (CodeGenerator::*method)(ZoneList<Expression*>*);
     const char* name;
+    int nargs;
   };
 
   static InlineRuntimeLUT* FindInlineRuntimeLUT(Handle<String> name);
@@ -555,7 +560,7 @@
 
   // 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);
@@ -593,14 +598,10 @@
   // 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 transcendental functions.
   void GenerateMathSin(ZoneList<Expression*>* args);
   void GenerateMathCos(ZoneList<Expression*>* args);
-
-  // Fast case for sqrt
   void GenerateMathSqrt(ZoneList<Expression*>* args);
 
   // Simple condition analysis.