================
@@ -805,8 +844,32 @@ bool CIRGenModule::getCPUAndFeaturesAttributes(
attrs["cir.target-features"] = llvm::join(features, ",");
addedAttr = true;
}
- // TODO(cir): add metadata for AArch64 Function Multi Versioning.
- assert(!cir::MissingFeatures::opFuncMultiVersioning());
+ // Add metadata for AArch64 Function Multi Versioning. An empty string value
+ // for "cir.fmv-features" represents the default version (matches OGCG's
+ // value-less LLVM attribute).
+ if (getTarget().getTriple().isAArch64()) {
+ llvm::SmallVector<llvm::StringRef, 8> feats;
+ bool isDefault = false;
+ if (tv) {
+ isDefault = tv->isDefaultVersion();
+ tv->getFeatures(feats);
+ } else if (tc) {
+ isDefault = tc->isDefaultVersion(gd.getMultiVersionIndex());
+ tc->getFeatures(feats, gd.getMultiVersionIndex());
+ }
+ if (isDefault) {
+ attrs["cir.fmv-features"] = "";
+ addedAttr = true;
+ } else if (!feats.empty()) {
+ // Sort features and remove duplicates.
+ std::set<llvm::StringRef> orderedFeats(feats.begin(), feats.end());
+ std::string fmvFeatures;
+ for (llvm::StringRef f : orderedFeats)
+ fmvFeatures.append("," + f.str());
+ attrs["cir.fmv-features"] = fmvFeatures.substr(1);
----------------
skc7 wrote:
Updated in latest patch. Thanks for suggestion.
https://github.com/llvm/llvm-project/pull/195813
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