[llvm] Adding support in llvm-exegesis for Aarch64 for handling FPR64/128, PPR16 and ZPR128 reg class. (PR #127564)

[via llvm-commits]

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+; REQUIRES: aarch64-registered-target
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+# PPR REGISTER CLASS INITIALIZATION TESTCASE 
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lakshayk-nv wrote:

- Reverted capitalized (all char) comments.
- Using `##` for comments in testcases. Updated testcases.
Thanks!


https://github.com/llvm/llvm-project/pull/127564