[PATCH] D116918: [RISCV] Use X0 in vsetvli if AVL ≥ (2 * VLMAX)

[Jianjian Guan via Phabricator via llvm-commits]

jacquesguan added a comment.

In D116918#3231810 <https://reviews.llvm.org/D116918#3231810>, @craig.topper wrote:

> I agree we could do this, but I don't understand the use case that makes it worth optimizing. Why would a user do this?

Yes, we usually do not have such cases because we have vsetvlimax interfacenow.


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