+/* Since new processors generally contain a superset of features of those that
+ came before them, the idea is to make implementations of new processors
+ less error prone and easier to read.
+ Namely:
+ list<SubtargetFeature> Power8FeatureList = ...
+ list<SubtargetFeature> FutureProcessorSpecificFeatureList =
+ [ features that Power8 does not support ]
+ list<SubtargetFeature> FutureProcessorFeatureList =
+ !listconcat(Power8FeatureList, FutureProcessorSpecificFeatureList)
+
+ Makes it explicit and obvious what is new in FutureProcesor vs. Power8 as
+ well as providing a single point of definition if the feature set will be
+ used elsewhere.
+*/
+def ProcessorFeatures {
+ list<SubtargetFeature> Power7FeatureList =
+ [DirectivePwr7, FeatureAltivec, FeatureVSX,
+ FeatureMFOCRF, FeatureFCPSGN, FeatureFSqrt, FeatureFRE,
+ FeatureFRES, FeatureFRSQRTE, FeatureFRSQRTES,
+ FeatureRecipPrec, FeatureSTFIWX, FeatureLFIWAX,
+ FeatureFPRND, FeatureFPCVT, FeatureISEL,
+ FeaturePOPCNTD, FeatureCMPB, FeatureLDBRX,
+ Feature64Bit /*, Feature64BitRegs */,
+ FeatureBPERMD, FeatureExtDiv,
+ DeprecatedMFTB, DeprecatedDST];
+ list<SubtargetFeature> Power8SpecificFeatures =
+ [DirectivePwr8, FeatureP8Altivec, FeatureP8Vector, FeatureP8Crypto,
+ FeatureHTM, FeatureDirectMove, FeatureICBT, FeaturePartwordAtomic];
+ list<SubtargetFeature> Power8FeatureList =
+ !listconcat(Power7FeatureList, Power8SpecificFeatures);
+}
+