[llvm] [P10][XXEVAL] Exploit xxeval instruction for cases of the ternary(A, X, and(B, C)), ternary(A, X, B), ternary(A, X, C), ternary(A, X, xor(B, C)) forms. (PR #141733)

[Tony Varghese via llvm-commits]

tonykuttai wrote:

@RolandF77 @lei137 @amy-kwan 

[[NFC][PowerpC] Add testcases for locking down the xxeval instruction support for ternary operators](https://github.com/llvm/llvm-project/pull/141601#top) is the precursor to this PR.

https://github.com/llvm/llvm-project/pull/141733