MASK4 0, 5, 6, 7 also works definitely. The optimization is generic as long as the permutation index matches the compress insn on RVV ISA SPEC.
juzhe.zh...@rivai.ai From: Robin Dapp Date: 2023-07-11 20:24 To: 钟居哲; gcc-patches CC: rdapp.gcc; kito.cheng; kito.cheng; Jeff Law Subject: Re: [PATCH] RISC-V: Optimize permutation codegen with vcompress > 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. Yes, that's clear. I meant the testcases are mostly designed like MASK4 1, 2, 6, 7 instead of variation like MASK4 0, 5, 6, 7 or something else. But this wouldn't add a lot of coverage anyway as we're searching for the "pivot" anyway. Regards Robin
