[llvm] [X86] Recognise VPMADD52L pattern with AVX512IFMA/AVXIFMA (#153787) (PR #156714)

[Hongyu Chen via llvm-commits]

https://github.com/XChy commented:

Please split the patch into two commits. The first commit is to add the test cases. The second adds the code change and testcase diff.

https://github.com/llvm/llvm-project/pull/156714