[PATCH] D22639: Add flag to PassManagerBuilder to disable GVN Hoist Pass.

[Hans Wennborg via llvm-commits]

hans added a comment.

In https://reviews.llvm.org/D22639#500689, @probinson wrote:

> This means to enable the pass in opt I need to do both `-enable-gvn-hoist` and `-O1` which is not usual for opt.  (For example I need just `-dce` to get DCE.)  Is that the intent?


I thought opt didn't use PassManagerBuilder, but added passes through some other magic. I don't actually know that this is how it works, but I assumed it was something like it, because test/Transforms/GVN/hoist.ll still just runs "opt -gvn-hoist" and it seems to work.


Repository:
  rL LLVM

https://reviews.llvm.org/D22639