[PATCH] Port ADCE to the new pass manager
Justin Bogner via llvm-commits
llvm-commits at lists.llvm.org
Fri Sep 25 15:46:54 PDT 2015
The attached patch ports ADCE to the new pass manager. It's basically
mechanical and based off of some of the ports you've already done so
it's probably good to go in, but I have a couple of questions about
parts that seemed a little odd.
1. The legacy pass states it preserves GlobalsAAWrapperPass, but the new
pass returns PreservedAnalyses::none when it does work. This seems
inconsistent, but maybe I'm missing something.
2. Similarly, some of the other passes you've ported do
AU.setPreservesCFG(), but this doesn't seem to be reflected in the
new passes. How's this going to work?
3. As per my reply to "Port SimplifyCFG to the new pass manager", it
seems like we don't have good testing infrastructure in terms of
preserved analyses. Do you have any ideas for how we're going to deal
Anyway, let me know if this is good to land. I might tackle a couple
more of these in the near future, and some clarity on the above
questions would help.
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