RFT: Please help testing the llvm/clang 3.5.0 import

[Garrett Cooper]

On Dec 18, 2014, at 6:51, Warner Losh <imp at bsdimp.com> wrote:

> With the recent parallelism work, the is true. It might save a couple percent
> off the build time. Before those changes, though, disabling all non target
> arches saved about 10% of the buildworld time.

I’m curious. How much is 10% in terms of minutes and with what -j value?

> Creating a hack to do this is easy (which is how I measured it). But Dimitry
> is right that creating a robust solution is hard. Even harder if you want it
> to be completely clean.

It didn’t seem incredibly hard — it just required a bit more “generated files” in clang AFAICT. I’ll hang ten until clang35 is in so I can re-asses what’s going on with building it.

> I tend to agree. IMHO, supporting the work going on to bring the
> meta-mode stuff will pay far higher dividends than optimizing this
> corner of the build.

True… probably will!
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