================
@@ -19,10 +19,38 @@
#include "llvm/TableGen/Record.h"
#include "llvm/TableGen/TableGenBackend.h"
#include <cstdint>
+#include <set>
#include <string>
using namespace llvm;
+/// Collect the full set of implied features for a SubtargetFeature.
+static void CollectImpliedFeatures(std::set<Record *> &SeenFeats, Record *Rec)
{
+ assert(Rec->isSubClassOf("SubtargetFeature") &&
+ "Rec is not a SubtargetFeature");
+
+ SeenFeats.insert(Rec);
+ for (Record *Implied : Rec->getValueAsListOfDefs("Implies"))
+ CollectImpliedFeatures(SeenFeats, Implied);
+}
+
+static void CheckFeatureTree(Record *Root) {
+ std::set<Record *> SeenFeats;
+ CollectImpliedFeatures(SeenFeats, Root);
+
+ // For processors, check that each of the mandatory (implied) features which
----------------
pratlucas wrote:
Nit: this seems to be covering architecture versions rather than processors.
https://github.com/llvm/llvm-project/pull/104435
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