I am working on that, it seems the cost of vsetvli instruction become 0 due to this change, then loop invariant motion won't hoist vsetvli longer.
Jeff Law <jeffreya...@gmail.com> 於 2023年8月3日 週四 21:49 寫道： > > > On 8/3/23 03:27, juzhe.zh...@rivai.ai wrote: > > > https://github.com/gcc-mirror/gcc/commit/e15d0b6680d10d7666195e9db65581364ad5e5df > < > https://github.com/gcc-mirror/gcc/commit/e15d0b6680d10d7666195e9db65581364ad5e5df > > > > > > This patch causes so many fails in the regression: > Mine. I'll take care of it. Probably something slipping through the > expander that shouldn't. I've been primarily focused on the execute.exp > part of the suite to find code correctness issues with the original patch. > > jeff >
