samparker added a comment. > It might be possible to rearrange Low Overhead Loops to run before > ConstantIslands, but you'd probably need to do more to make it work properly. > I don't think ConstantIslands knows how to handle the branches generated by > LowOverheadLoop.
This, and the fact that LowOverheadLoops is dependent upon block sizes and placement (I need to add a comment in the header on that pass....). So, ConstantIslands would have to guarantee not to change branch targets or change the distance between blocks around the low-overhead loop constructs. I think updating liveness information would be the easier option. Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D57054/new/ https://reviews.llvm.org/D57054 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
