Compiler speed (vanilla vs. LTO, PGO and LTO+PGO)

Andi Kleen
Mon Mar 25 13:07:00 GMT 2013

Markus Trippelsdorf <> writes:
> So it appears, contrary to the advice given above, that it is not useful
> to build gcc 4.8.0 with the lto option at the moment.

Did you build firefox/kernel with debug info on/off?

Often debug info on changes the compiler performance significantly, as it
generates a lot more IO.


-- -- Speaking for myself only

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