[clang] [llvm] [PowerPC] frontend get target feature from backend with cpu name (PR #137670)

[David Tenty via cfe-commits]

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@@ -52,23 +60,35 @@ struct SubtargetFeatureKV {
 //===----------------------------------------------------------------------===//
 
 /// Used to provide key value pairs for feature and CPU bit flags.
-struct SubtargetSubTypeKV {
-  const char *Key;                      ///< K-V key string
-  FeatureBitArray Implies;              ///< K-V bit mask
-  FeatureBitArray TuneImplies;          ///< K-V bit mask
-  const MCSchedModel *SchedModel;
+struct BasicSubtargetSubTypeKV {
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daltenty wrote:

nit: I'd be nicer to use inheritance to make this cleaner, but I think that can be a post-commit refactoring

https://github.com/llvm/llvm-project/pull/137670