No. Such pattern you pointed I already supported. The operation is very simple. Just use a single vmv.v.i but larger SEW is enough. No need vzext.
juzhe.zh...@rivai.ai From: Robin Dapp Date: 2023-06-12 22:43 To: juzhe.zhong; gcc-patches CC: rdapp.gcc; kito.cheng; kito.cheng; palmer; palmer; jeffreyalaw Subject: Re: [PATCH] RISC-V: Enhance RVV VLA SLP auto-vectorization with decompress operation Hi Juzhe, seems a nice improvement, looks good to me. While reading I was wondering if vzext could help synthesize some (zero-based) patterns as well (e.g. 0 3 0 3...). However the sequences I could come up with were not shorter than what we are already emitting, so probably not. Regards Robin
