[compiler] Allow optimization of top-level eval code.

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index e6ddc0cdfa04d92b4e7d7a4a630d2eaa05cbc992..b80dfe4bb8720ea9ff4e71e4785d2c5c32bb9f66 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -12773,7 +12773,11 @@ MaybeHandle<SharedFunctionInfo> Script::FindSharedFunctionInfo(
   SharedFunctionInfo* shared;
   while ((shared = iterator.Next<SharedFunctionInfo>())) {
     if (fun->function_token_position() == shared->function_token_position() &&
-        fun->start_position() == shared->start_position()) {
+        fun->start_position() == shared->start_position() &&
+        fun->end_position() == shared->end_position()) {
+      // This method is not used to find top-level SharedFunctionInfo objects,
+      // verify that above checks are sufficient to distinguish top-level code.
+      DCHECK(!shared->is_toplevel());
       return Handle<SharedFunctionInfo>(shared);
     }
   }