Fast string construct stub (ia32 only for now).

src/arm/builtins-arm.cc

Index: src/arm/builtins-arm.cc
diff --git a/src/arm/builtins-arm.cc b/src/arm/builtins-arm.cc
index a279687a7605eef2393e65a0d6511097c2500513..f3262d755319ee05d47fd865a30a6b0a8c4fbda9 100644
--- a/src/arm/builtins-arm.cc
+++ b/src/arm/builtins-arm.cc
@@ -481,6 +481,13 @@ void Builtins::Generate_ArrayConstructCode(MacroAssembler* masm) {
 }
 
 
+void Builtins::Generate_StringConstructCode(MacroAssembler* masm) {
+  // TODO(bug): implement custom construct stub.
+  // Generate a copy of the generic stub for now.
+  Generate_JSConstructStubGeneric(masm);
+}
+
+
 void Builtins::Generate_JSConstructCall(MacroAssembler* masm) {
   // ----------- S t a t e -------------
   //  -- r0     : number of arguments