diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/resolve/BindingContextUtils.java b/compiler/frontend/src/org/jetbrains/jet/lang/resolve/BindingContextUtils.java
index bfaec5b35c7..aaa97de4b1c 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/resolve/BindingContextUtils.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/resolve/BindingContextUtils.java
@@ -43,7 +43,7 @@ public class BindingContextUtils {
             if (declarationDescriptor instanceof CallableMemberDescriptor) {
                 CallableMemberDescriptor callable = (CallableMemberDescriptor) declarationDescriptor;
                 if (callable.getKind() != CallableMemberDescriptor.Kind.DECLARATION) {
-                    throw new IllegalStateException("non-declaration descriptors should be filtered out earler: " + callable);
+                    throw new IllegalStateException("non-declaration descriptors should be filtered out earlier: " + callable);
                 }
             }
             //if (declarationDescriptor instanceof VariableAsFunctionDescriptor) {
@@ -56,8 +56,8 @@ public class BindingContextUtils {
         }
     };
 
-    static final ReadOnlySlice<DeclarationDescriptor, PsiElement> DESCRIPTOR_TO_DECLARATION =
-            Slices.<DeclarationDescriptor, PsiElement>sliceBuilder().setKeyNormalizer(DECLARATION_DESCRIPTOR_NORMALIZER).build();
+    /*package*/ static final ReadOnlySlice<DeclarationDescriptor, PsiElement> DESCRIPTOR_TO_DECLARATION =
+            Slices.<DeclarationDescriptor, PsiElement>sliceBuilder().setKeyNormalizer(DECLARATION_DESCRIPTOR_NORMALIZER).setDebugName("DESCRIPTOR_TO_DECLARATION").build();
 
     @Nullable
     public static PsiElement resolveToDeclarationPsiElement(@NotNull BindingContext bindingContext, @Nullable JetReferenceExpression referenceExpression) {
diff --git a/compiler/frontend/src/org/jetbrains/jet/util/slicedmap/BasicWritableSlice.java b/compiler/frontend/src/org/jetbrains/jet/util/slicedmap/BasicWritableSlice.java
index a85b66dc4ac..65ddf735b54 100644
--- a/compiler/frontend/src/org/jetbrains/jet/util/slicedmap/BasicWritableSlice.java
+++ b/compiler/frontend/src/org/jetbrains/jet/util/slicedmap/BasicWritableSlice.java
@@ -16,6 +16,8 @@
 
 package org.jetbrains.jet.util.slicedmap;
 
+import org.jetbrains.annotations.NotNull;
+
 import java.lang.reflect.Field;
 import java.lang.reflect.Modifier;
 
@@ -87,6 +89,13 @@ public class BasicWritableSlice<K, V> implements WritableSlice<K, V> {
         return isCollective;
     }
 
+    public void setDebugName(@NotNull String debugName) {
+        if (this.debugName != null) {
+            throw new IllegalStateException("Debug name already set for " + this);
+        }
+        this.debugName = debugName;
+    }
+
     @Override
     public String toString() {
         return debugName;
diff --git a/compiler/frontend/src/org/jetbrains/jet/util/slicedmap/Slices.java b/compiler/frontend/src/org/jetbrains/jet/util/slicedmap/Slices.java
index e2b4b232146..b4b538c5a1f 100644
--- a/compiler/frontend/src/org/jetbrains/jet/util/slicedmap/Slices.java
+++ b/compiler/frontend/src/org/jetbrains/jet/util/slicedmap/Slices.java
@@ -16,6 +16,8 @@
 
 package org.jetbrains.jet.util.slicedmap;
 
+import org.jetbrains.annotations.NotNull;
+
 import java.util.Arrays;
 import java.util.List;
 
@@ -82,6 +84,8 @@ public class Slices {
 
         private RewritePolicy rewritePolicy;
 
+        private String debugName;
+
         private SliceBuilder(RewritePolicy rewritePolicy) {
             this.rewritePolicy = rewritePolicy;
         }
@@ -101,12 +105,25 @@ public class Slices {
             return this;
         }
 
+        public SliceBuilder<K, V> setDebugName(@NotNull String debugName) {
+            this.debugName = debugName;
+            return this;
+        }
+
         public SliceBuilder<K, V> setKeyNormalizer(KeyNormalizer<K> keyNormalizer) {
             this.keyNormalizer = keyNormalizer;
             return this;
         }
 
         public RemovableSlice<K, V>  build() {
+            SliceWithOpposite<K, V> result = doBuild();
+            if (debugName != null) {
+                result.setDebugName(debugName);
+            }
+            return result;
+        }
+
+        private SliceWithOpposite<K, V> doBuild() {
             if (defaultValue != null) {
                 return new SliceWithOpposite<K, V>(rewritePolicy, opposite, keyNormalizer) {
                     @Override
@@ -133,7 +150,6 @@ public class Slices {
             }
             return new SliceWithOpposite<K, V>(rewritePolicy, opposite, keyNormalizer);
         }
-
     }
 
     public static class BasicRemovableSlice<K, V> extends BasicWritableSlice<K, V> implements RemovableSlice<K, V> {