[PATCH] D24976: [thinlto] Don't decay threshold for hot callsites

[Piotr Padlewski via llvm-commits]

Prazek added a comment.

I have some initial results. It looks like because inliner doesn't know how to inline hot callsites, then most of the SPEC benchmarks have the same binary as current trunk (with hot heuristic).
But on the google branch with smarter inliner there is clear win in povray, about +0.5% compared to current trunk with hot heuristic, over all other benchmarks that produced different binary are not much different.

So the question is - should I temporary set the hot-evolution-factor to the same as normal evolution factor? So this way We won't import more functions that inliner won't inline, and then when new inliner will make it to trunk, to switch it to 1.0


https://reviews.llvm.org/D24976