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

[Nemanja Ivanovic via llvm-commits]

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@@ -615,7 +636,7 @@ def RCCp {
 let Predicates = [PrefixInstrs] in {
   let Interpretation64Bit = 1, isCodeGenOnly = 1 in {
     defm PADDI8 :
-      MLS_DForm_R_SI34_RTA5_p<14, (outs g8rc:$RT), (ins g8rc:$RA, s34imm:$SI),
+      MLS_DForm_R_SI34_RTA5_p<14, (outs g8rc:$RT), (ins g8rc_nox0:$RA, s34imm:$SI),
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nemanjai wrote:

This and line 649 appear to be bug fixes. If so, I think they should go into a separate commit.

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