[llvm-branch-commits] [llvm] [X86] Add atomic vector tests for unaligned >1 sizes. (PR #120387)

[Matt Arsenault via llvm-branch-commits]

arsenm wrote:

> Should we test any of the unaligned ones in this series? Certain aligned tests actually also lower to calls, like `%ret = load atomic <2 x {double,i64}>, ptr %x acquire, align 16` -> ` callq ___atomic_load_16`, yet these have always worked.

Yes, include both. But just the unaligned cases are inadequate 

https://github.com/llvm/llvm-project/pull/120387