llvm-project

45e41f96 - [SLP] Compute a shuffle mask for SK_InsertSubvector (#85408)

[SLP] Compute a shuffle mask for SK_InsertSubvector (#85408) This is the third of a series of small patches to compute shuffle masks for the couple of cases where we call getShuffleCost without one. My goal is to add an invariant that all calls to getShuffleCost for fixed length vectors have a mask. After this change, there is one SK_InsertSubvector case left. I excluded it from this patch just because I thought it worthy of individual attention and review. --------- Co-authored-by: Alexey Bataev <a.bataev@gmx.com>