[llvm] [PowerPC] Implement VSX Vector Integer Arithmetic Instructions (PR #158363)

[zhijian lin via llvm-commits]

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@@ -183,6 +183,25 @@ class XX3Form_XTAB6_P1<bits<5> xo, dag OOL, dag IOL, string asmstr,
   let Inst{31} = XT{5};
 }
 
+class XX3Form_XTAB6<bits<6> opcode, bits<8> xo, dag OOL, dag IOL, string asmstr,
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diggerlin wrote:

just curious, is there any rule for the name of the instruction format class ?

https://github.com/llvm/llvm-project/pull/158363