[llvm] [VectorCombine] Consolidate fragmented loads into wide loads (PR #175311)

[Yingwei Zheng via llvm-commits]

https://github.com/dtcxzyw commented:

Missing aliasing check between these loads.
Reference:
https://github.com/llvm/llvm-project/blob/271a62f838cb020f356ab371d1da8927014fff9d/llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp#L708-L734

https://github.com/llvm/llvm-project/pull/175311