[llvm] [RISCV] Add FeaturePredictableSelectIsExpensive (PR #97708)

[Craig Topper via llvm-commits]

================
@@ -1262,6 +1262,10 @@ def FeatureUnalignedVectorMem
 def FeaturePostRAScheduler : SubtargetFeature<"use-postra-scheduler",
     "UsePostRAScheduler", "true", "Schedule again after register allocation">;
 
+def FeaturePredictableSelectIsExpensive
+    : SubtargetFeature<"predictable-select-expensive", "IsPredictableSelectExpensive", "true",
----------------
topperc wrote:

Can we name the flag `PredictableSelectIsExpensive`?

https://github.com/llvm/llvm-project/pull/97708