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

[Fangrui Song via llvm-commits]

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@@ -16,6 +16,7 @@
 
 #include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/StringRef.h"
+#include "llvm/MC/MCSubtargetInfo.h"
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MaskRay wrote:

@diggerlin This is blocking and should be addressed before landing.

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