[llvm] [PPC] Add custom lowering for uaddo (PR #110137)

[Eli Friedman via llvm-commits]

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@@ -198,6 +198,9 @@ PPCTargetLowering::PPCTargetLowering(const PPCTargetMachine &TM,
     }
   }
 
+  if (!Subtarget.hasP10Vector())
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efriedma-quic wrote:

How is hasP10Vector() related to the instructions in question?  Do we have testcases for what's generated when hasP10Vector() is enabled?

https://github.com/llvm/llvm-project/pull/110137