[llvm] r213898 - [SDAG] Introduce a combined set to the DAG combiner which tracks nodes

Wed Aug 27 06:38:30 PDT 2014

> It’s possible that regression is more pronounced when building with LTO.
>
> Bruno, just to be sure, can you build clang with LTO where the only difference is this change to try to confirm that this patch is responsible?

I skimmed through your first reply and forgot to mention, but these
results already come from clang built with LTO :-)
Anyway, I'm gonna try with this change only to see what happens.

-- 
Bruno Cardoso Lopes
http://www.brunocardoso.cc