[clang] [RISCV][FMV] Support target_version (PR #99040)

[Craig Topper via cfe-commits]

================
@@ -4268,8 +4268,12 @@ void CodeGenModule::emitMultiVersionFunctions() {
           } else if (const auto *TVA = CurFD->getAttr<TargetVersionAttr>()) {
             if (TVA->isDefaultVersion() && IsDefined)
               ShouldEmitResolver = true;
-            TVA->getFeatures(Feats);
             llvm::Function *Func = createFunction(CurFD);
+            if (getTarget().getTriple().isRISCV()) {
+              Feats.push_back(TVA->getName());
+            } else {
+              TVA->getFeatures(Feats);
----------------
topperc wrote:

Add an assert here that the target is AArch64

https://github.com/llvm/llvm-project/pull/99040