On 5/31/23 05:55, Robin Dapp wrote:
Hi Juzhe,The approach is quite simple and obvious, changing extension pattern into define_insn_and_split will make combine PASS combine into widen operations naturally.looks good to me. Tiny nit: I would add a comment above the patterns to clarify why insn_and_split instead of expand. Something like "to help combine match...", no need for a V2 though.
OK with that change. jeff
