Merge remote-tracking branch 'origin/main' into rebranch

lib/IRGen/IRGenModule.cpp

@@ -1319,6 +1319,8 @@ bool IRGenerator::canEmitWitnessTableLazily(SILWitnessTable *wt) {
 }
 
 void IRGenerator::addLazyWitnessTable(const ProtocolConformance *Conf) {
+  assert(!SIL.getASTContext().LangOpts.hasFeature(Feature::Embedded));
+
   if (auto *wt = SIL.lookUpWitnessTable(Conf)) {
     // Add it to the queue if it hasn't already been put there.
     if (canEmitWitnessTableLazily(wt) &&