Mark ownership fixup instructions as live

Author: meg-gupta

lib/SILOptimizer/Transforms/DeadCodeElimination.cpp

@@ -643,11 +643,14 @@ void DCE::endLifetimeOfLiveValue(Operand *op, SILInstruction *insertPt) {
 
   SILBuilderWithScope builder(insertPt);
   if (value->getOwnershipKind() == OwnershipKind::Owned) {
-    builder.createDestroyValue(RegularLocation::getAutoGeneratedLocation(),
-                               value);
+    auto *destroy = builder.createDestroyValue(
+        RegularLocation::getAutoGeneratedLocation(), value);
+    markInstructionLive(destroy);
   }
   if (value->getOwnershipKind() == OwnershipKind::Guaranteed) {
-    builder.createEndBorrow(RegularLocation::getAutoGeneratedLocation(), value);
+    auto *endBorrow = builder.createEndBorrow(
+        RegularLocation::getAutoGeneratedLocation(), value);
+    markInstructionLive(endBorrow);
   }
 }