[llvm] [RISCV] Add support for new unprivileged extensions defined in profiles spec (PR #77458)

[Craig Topper via llvm-commits]

================
@@ -554,6 +574,12 @@ def HasStdExtZtso : Predicate<"Subtarget->hasStdExtZtso()">,
                               "'Ztso' (Memory Model - Total Store Order)">;
 def NotHasStdExtZtso : Predicate<"!Subtarget->hasStdExtZtso()">;
 
+def FeatureStdExtZa164rs : SubtargetFeature<"za64rs", "HasStdExtZa64rs", "true",
----------------
topperc wrote:

FeatureStdExtZa164rs -> FeatureStdExtZa64rs  you copy pasted the 1 from 128.

https://github.com/llvm/llvm-project/pull/77458