llvm-project

0de8ff6d - [AArch64] Reduce the cost of repeated sub-shuffle (#139331)

[AArch64] Reduce the cost of repeated sub-shuffle (#139331) Given a larger-than-legal shuffle we will split into multiple sub-parts. This adds a check to the computed costs of sub-shuffles so that repeated sequences are not accounted for multiple times. This especially reduces the cost of broadcasts/splats.