================
@@ -48,6 +48,19 @@ std::optional<AArch64::ArchInfo>
AArch64::ArchInfo::findBySubArch(StringRef SubA
return {};
}
+unsigned AArch64::getFMVPriority(ArrayRef<StringRef> Features) {
+ constexpr unsigned MaxFMVPriority = 1000;
+ unsigned Priority = 0;
+ unsigned NumFeatures = 0;
+ for (StringRef Feature : Features) {
+ if (auto Ext = parseFMVExtension(Feature)) {
+ Priority = std::max(Priority, Ext->Priority);
+ NumFeatures++;
+ }
+ }
+ return Priority + MaxFMVPriority * NumFeatures;
----------------
jroelofs wrote:
I don't understand the algorithm here. This seems like sorts resolvees first by
how many conditions they've got, and _then_ by the highest priority of each in
that group. But what we actually need is a total order on two sets. Maybe the
API should be shaped more like a comparison operator on feature sets, rather
than a serialized index constructed from members's priorities?
https://github.com/llvm/llvm-project/pull/116257
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