Re: [PATCH] RISC-V: RVV: add toggle to control vsetvl pass behavior

On 12/22/23 12:45, Vineet Gupta wrote: RVV requires VSET?VL? instructions to dynamically configure VLEN at runtime. There's a custom pass to do that which has a simple mode which generates a VSETVL for each V insn and a lazy/optimal mode which uses LCM dataflow to move VSETVL around,

[PATCH] RISC-V: RVV: add toggle to control vsetvl pass behavior

RVV requires VSET?VL? instructions to dynamically configure VLEN at runtime. There's a custom pass to do that which has a simple mode which generates a VSETVL for each V insn and a lazy/optimal mode which uses LCM dataflow to move VSETVL around, identify/delete the redundant ones. Currently