[llvm] [LV][VPlan] When the load/store stride is -1, use vle/vse instead of vlse/vsse (PR #130032)

[via llvm-commits]

LiqinWeng wrote:

> Is this related/overlaps-with @Mel-Chen 's https://github.com/llvm/llvm-project/pull/128718/files?
> no，My idea is that when stride is -1, I set the Offset value to (1-EVL), so that the instructions used in the final translation to the assembly level are VLE/VSE instead of VLSE/VSSE. But I'm not sure if this will be a problem, do you have any ideas?



https://github.com/llvm/llvm-project/pull/130032