Create a new RegExp object for every evaluation of a RegExp literal.

src/ia32/codegen-ia32.h

Index: src/ia32/codegen-ia32.h
diff --git a/src/ia32/codegen-ia32.h b/src/ia32/codegen-ia32.h
index 66014a0a0ca9d0acf2dc65e4c92c041dcc235275..2368b23c90bd0e58ea0f64cdd907578d935d4b3b 100644
--- a/src/ia32/codegen-ia32.h
+++ b/src/ia32/codegen-ia32.h
@@ -635,7 +635,7 @@ class CodeGenerator: public AstVisitor {
   // Instantiate the function based on the shared function info.
   Result InstantiateFunction(Handle<SharedFunctionInfo> function_info);
 
-  // Support for type checks.
+  // Support for types.
   void GenerateIsSmi(ZoneList<Expression*>* args);
   void GenerateIsNonNegativeSmi(ZoneList<Expression*>* args);
   void GenerateIsArray(ZoneList<Expression*>* args);
@@ -710,6 +710,9 @@ class CodeGenerator: public AstVisitor {
   void GenerateMathCos(ZoneList<Expression*>* args);
   void GenerateMathSqrt(ZoneList<Expression*>* args);
 
+  // Check whether two RegExps are equivalent
+  void GenerateIsRegExpEquivalent(ZoneList<Expression*>* args);
+
   // Simple condition analysis.
   enum ConditionAnalysis {
     ALWAYS_TRUE,