[clang] [llvm] [AArch64] Add support for C1 CPUs (PR #171124)

[David Green via llvm-commits]

================
@@ -300,6 +320,32 @@ def TuneX925 : SubtargetFeature<"cortex-x925", "ARMProcFamily",
                                 FeatureAvoidLDAPUR,
                                 FeaturePredictableSelectIsExpensive]>;
 
+def TuneC1Ultra : SubtargetFeature<"c1-ultra", "ARMProcFamily",
+                                  "C1Ultra", "C1-Ultra ARM Processors",[
+                                  FeatureALULSLFast,
+                                  FeatureFuseAdrpAdd,
+                                  FeatureFuseCmpCSel,
+                                  FeatureFuseCmpCSet,
+                                  FeatureFuseAES,
+                                  FeaturePostRAScheduler,
+                                  FeatureEnableSelectOptimize,
+                                  FeatureUseFixedOverScalableIfEqualCost,
+                                  FeatureAvoidLDAPUR,
+                                  FeaturePredictableSelectIsExpensive]>;
+
+def TuneC1Premium : SubtargetFeature<"c1-premium", "ARMProcFamily",
----------------
davemgreen wrote:

Premium before Ultra.

https://github.com/llvm/llvm-project/pull/171124