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

[Amy Kwan via llvm-commits]

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@@ -444,7 +444,7 @@ def ProcessorFeatures {
   // dispatch for vector operations than scalar ones. For the time being,
   // this list also includes scheduling-related features since we do not have
   // enough info to create custom scheduling strategies for future CPUs.
-  list<SubtargetFeature> P9SpecificFeatures = [FeatureVectorsUseTwoUnits];
+  list<SubtargetFeature> P9SpecificFeatures = [FeatureVectorsUseTwoUnits,FeatureHTM];
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amy-kwan wrote:

Nit on spacing.
```suggestion
  list<SubtargetFeature> P9SpecificFeatures = [FeatureVectorsUseTwoUnits, FeatureHTM];
```

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