The compress optimization pattern has included all variety. It's not necessary to force split (half/half), we can apply this compress pattern to any variety of compress pattern.
You can apply this patch to see. Thanks. juzhe.zh...@rivai.ai From: Robin Dapp Date: 2023-07-11 20:17 To: juzhe.zhong; gcc-patches CC: rdapp.gcc; kito.cheng; kito.cheng; jeffreyalaw Subject: Re: [PATCH] RISC-V: Optimize permutation codegen with vcompress Hi Juzhe, looks good from my side, thanks. While going through it I thought of some related cases that we could still handle differently but I didn't bother to formalize them for now. Most likely we already handle them in the shortest way anyway. I'm going to check on that when I find some time at some point. In the tests I noticed that most (all?) of them are pretty evenly split (half/half) between first and second source vector. Wouldn't we want some more variety there? Still OK without that IMHO. Regards Robin
