[llvm] [Matrix][IR] Don't crash when verifying strides with more than 64 bits (PR #163729)

[Nikita Popov via llvm-commits]

https://github.com/nikic commented:

Alternatively you could also verify that the bit width is <= 64, which might save additional handling elsewhere. IIRC you don't need more than 64 bits as long as that's the maximum size_t type. No strong opinion though.

https://github.com/llvm/llvm-project/pull/163729