[Open64-devel] Lightweight vs Standalone Inliner

[Christophe L. <chr...@st...>]

Hi all,

I am wondering what is the purpose of the difference between
the lightweight and the standalone inliner?

In the standard Open64 build, the inliner is built with
-D_LIGHTWEIGHT_INLINER.

What would exactly bring the _STANDALONE_INLINER version?

For instance, I have noticed that the lightweight version
does not check the number of actual vs formal parameters
(causing a compiler failure in some cases), while this
is handled by the IPA inliner (and would be by the
standalone inliner too).

Similarly, I have seen that several other conditions
leading to non-inlining of functions are not handled
by the lightweight-inliner, which makes me worry about
possible compiler crashes.

For instance, tracking of pragmas, VLAs, exceptions
are triggered with #ifndef _LIGHTWEIGHT_INLINER.

Would it be safe to enable the standalone inliner
instead of the lightweight one? What are the risks,
benefits, drawbacks?

Thanks,

Christophe.