1 files changed, 25 insertions, 0 deletions
diff --git a/src/main/java/com/android/tools/r8/shaking/RootSetBuilder.java b/src/main/java/com/android/tools/r8/shaking/RootSetBuilder.java
index 0fa5051d7..d40da6131 100644
--- a/src/main/java/com/android/tools/r8/shaking/RootSetBuilder.java
+++ b/src/main/java/com/android/tools/r8/shaking/RootSetBuilder.java
@@ -28,6 +28,7 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.Collections;
+import java.util.Comparator;
 import java.util.HashSet;
 import java.util.IdentityHashMap;
 import java.util.List;
@@ -582,5 +583,29 @@ public class RootSetBuilder {
       return Collections
           .unmodifiableMap(dependentNoShrinking.getOrDefault(item, Collections.emptyMap()));
     }
+
+    @Override
+    public String toString() {
+      StringBuilder builder = new StringBuilder();
+      builder.append("RootSet");
+
+      builder.append("\nnoShrinking: " + noShrinking.size());
+      builder.append("\nnoOptimization: " + noOptimization.size());
+      builder.append("\nnoObfuscation: " + noObfuscation.size());
+      builder.append("\nreasonAsked: " + reasonAsked.size());
+      builder.append("\nkeepPackageName: " + keepPackageName.size());
+      builder.append("\ncheckDiscarded: " + checkDiscarded.size());
+      builder.append("\nnoSideEffects: " + noSideEffects.size());
+      builder.append("\nassumedValues: " + assumedValues.size());
+      builder.append("\ndependentNoShrinking: " + dependentNoShrinking.size());
+
+      builder.append("\n\nNo Shrinking:");
+      noShrinking.keySet().stream()
+          .sorted(Comparator.comparing(DexItem::toSourceString))
+          .forEach(a -> builder
+              .append("\n").append(a.toSourceString()).append(" ").append(noShrinking.get(a)));
+      builder.append("\n");
+      return builder.toString();
+    }
   }
 }