[llvm] [InstCombine] Fold patterns which uses <2N x iM> type for comparisons on <N x i2M> vector types (PR #184328)

[Simon Pilgrim via llvm-commits]

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RKSimon wrote:

why have you split the endian tests instead of putting all the tests in a single file and having 2 RUNs ?

https://github.com/llvm/llvm-project/pull/184328