What's the BasicInliner for?

Hi all,

I was looking around in the lib/Transforms/Utils dir and ran into the
BasicInliner class. Seeing a large similarity between it and the SimpleInliner
Pass, I grep'd around for BasicInliner, but it doesn't seem to be used.

The difference between them seems that SimpleInliner is a pass that looks at
all functions, while BasicInliner is not a pass and looks only at explicitely
given functions. They do however both declare an inline-threshold commandline
parameter, which doesn't seem like a good idea.

Is BasicInliner deprecated and forgotten, or is it used by someone externally?