llvm-project

deaef1c1 - [LV] Adjust exit recipe detection to run on early vplan (#183318)

[LV] Adjust exit recipe detection to run on early vplan (#183318) Splitting out some work from #178454; this covers the enums for early exit loop type (none, readonly, readwrite) and the style used (readonly with multiple exit blocks, or masking with the last iteration done in scalar code), along with changing the early exit recipe detection to suit moving the transform for handling early exit readwrite loops earlier in the vplan pipeline.