[llvm] [InstCombine] Added pattern for recognising the construction of packed integers. (PR #147414)

[Yingwei Zheng via llvm-commits]

https://github.com/dtcxzyw commented:

Can you please add some tests with non-i8 scalar types (e.g., <4 x i16> -> i64)?


https://github.com/llvm/llvm-project/pull/147414