Generate a custom OSR entrypoint for OSR compiles on all platforms, and transition to optimized cod…

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index d370c32a1a4375dc25763d4e0e2d6b4da82bb323..5aab5ae12aeb28a5d1ae7776191d0dfc50cf420f 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -6692,8 +6692,10 @@ class JSFunction: public JSObject {
                              ClearExceptionFlag flag);
   static bool CompileLazy(Handle<JSFunction> function,
                           ClearExceptionFlag flag);
+  static Handle<Code> CompileOsr(Handle<JSFunction> function,
+                                 BailoutId osr_ast_id,
+                                 ClearExceptionFlag flag);
   static bool CompileOptimized(Handle<JSFunction> function,
-                               BailoutId osr_ast_id,
                                ClearExceptionFlag flag);
 
   // Tells whether or not the function is already marked for lazy