[debug-early] C++ clones and limbo DIEs

[Jason Merrill]

On 02/01/2015 03:42 AM, Richard Biener wrote:
> I always thought a user expects debug information for all entities in the source, not only those useb by the (optimized) binary.

Right, but the clones aren't in the source individually; the primary 
constructor that they are cloned from should always be in the debug 
info, but we don't need to emit anything for the clones unless they have 
a concrete instance.

Jason