[llvm] [PowerPC] Add a set of extended mnemonics that are missing from Power 10. (PR #73003)

[Lei Huang via llvm-commits]

================
@@ -725,6 +725,38 @@ class XForm_24_sync<bits<6> opcode, bits<10> xo, dag OOL, dag IOL,
   let Inst{31}    = 0;
 }
 
+class XForm_24_P10wait<bits<6> opcode, bits<10> xo, dag OOL, dag IOL,
----------------
lei137 wrote:

Most of these classes don't have the instruction name ref in it.  Any specific reason why these do instead of following the newly setup instr class naming convention?

https://github.com/llvm/llvm-project/pull/73003