Flash Pro CC and ASC 2.0 compiler for AIR

I'm getting some conflicting info on this and wonder if someone could clarify.

I'm using Flash Pro CC 2014 to publish AIR for iOS.

The AIR SDK has been updated to the latest version (17).

In "Library path" I've removed the Flex SDK and updated the path to the AIR SDK.

     (/Applications/Adobe Flash CC 2014/AIR17.0/frameworks/libs/)

When I publish to AIR for iOS is it using the new ASC 2.0 compiler in the AIR SDK? Or does Flash Pro CC 2014 have it's own internal AIR compiler? And if so, is it based on the older compiler?