llvm-project

676c6417 - [VectorCombine] Use getInstructionCost to cost Shuffle. (#122068)

[VectorCombine] Use getInstructionCost to cost Shuffle. (#122068) This allows it to produce a more accurate cost for the shuffle, using the more accurate calls to getShuffleCost in getInstructionCost. It helps fix some of the regressions from vector combine a little while ago, now that we have better subvector extract costs.