Sema: LLVM_DEBUG for CSBindings.cpp

Author: slavapestov

lib/Sema/CSBindings.cpp

@@ -21,9 +21,12 @@
 #include "swift/Sema/ConstraintGraph.h"
 #include "swift/Sema/ConstraintSystem.h"
 #include "llvm/ADT/SetVector.h"
+#include "llvm/Support/Debug.h"
 #include "llvm/Support/raw_ostream.h"
 #include <tuple>
 
+#define DEBUG_TYPE "PotentialBindings"
+
 using namespace swift;
 using namespace constraints;
 using namespace inference;
@@ -1951,6 +1954,13 @@ void PotentialBindings::retract(Constraint *constraint) {
   if (CS.isRecordingChanges())
     CS.recordChange(SolverTrail::Change::retractedBindings(TypeVar, constraint));
 
+  LLVM_DEBUG(
+    llvm::dbgs() << Constraints.size() << " " << Bindings.size() << " "
+                 << Protocols.size() << " " << Literals.size() << " "
+                 << AdjacentVars.size() << " " << DelayedBy.size() << " "
+                 << SubtypeOf.size() << " " << SupertypeOf.size() << " "
+                 << EquivalentTo.size() << "\n");
+
   Bindings.erase(
       llvm::remove_if(Bindings,
                       [&constraint](const PotentialBinding &binding) {