llvm-project

8359dbc8 - [X86] combineEXTRACT_SUBVECTOR - fold extract_subvector(subv_broadcast_load(ptr),0) -> load(ptr) (#126523)

[X86] combineEXTRACT_SUBVECTOR - fold extract_subvector(subv_broadcast_load(ptr),0) -> load(ptr) (#126523) This is typically handled by SimplifyDemandedVectorElts, but this will fail when there are multiple uses of the subv_broadcast_load node, but if there's just one use of the load result (and the rest are uses of the memory chain), we can still replace with a load and update the chain accordingly. Noticed on #126517