Comment # 8 on bug 1200487 from Mel Gorman

Tests are still executing. However, out of curiosity, what are the
expectations? I did not keep up to date with LTO development but from what I
can gather, the main benefit is reducing the size of the kernel assuming that
compilers and binutils do not generate a broken kernel and a secondary benefit
that some additional optimisations are potentially available. That primary
benefit may reduce icache pressure and the secondary might improve some fast
paths but it's not guaranteed. I've only found limited evaluations showing any
performance difference based on clang and even then, the differences seemed
marginal.