--- a/devtools/client/memory/components/tree-item.js
+++ b/devtools/client/memory/components/tree-item.js
@@ -1,14 +1,18 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
  * You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+const { isSavedFrame } = require("devtools/shared/DevToolsUtils");
 const { DOM: dom, createClass, PropTypes } = require("devtools/client/shared/vendor/react");
+
 const INDENT = 10;
+const MAX_SOURCE_LENGTH = 200;
+
 
 /**
  * An arrow that displays whether its node is expanded (▼) or collapsed
  * (▶). When its node has no children, it is hidden.
  */
 const TreeItem = module.exports = createClass({
   displayName: "tree-item",
 
@@ -17,13 +21,32 @@ const TreeItem = module.exports = create
 
     return dom.div({ className: "heap-tree-item" },
       dom.span({ className: "heap-tree-item-bytes" }, item.bytes),
       dom.span({ className: "heap-tree-item-count" }, item.count),
       dom.span({ className: "heap-tree-item-total-bytes" }, item.totalBytes),
       dom.span({ className: "heap-tree-item-total-count" }, item.totalCount),
       dom.span({ className: "heap-tree-item-name", style: { marginLeft: depth * INDENT }},
         arrow,
-        item.name
+        this.toLabel(item.name)
       )
     );
+  },
+
+  toLabel(name) {
+    return isSavedFrame(name)
+      ? this.savedFrameToLabel(name)
+      : String(name);
+  },
+
+  savedFrameToLabel(frame) {
+    return [
+      dom.span({ className: "heap-tree-item-function-display-name" },
+               frame.functionDisplayFrame || ""),
+      dom.span({ className: "heap-tree-item-at" }, "@"),
+      dom.span({ className: "heap-tree-item-source" }, frame.source.slice(0, MAX_SOURCE_LENGTH)),
+      dom.span({ className: "heap-tree-item-colon" }, ":"),
+      dom.span({ className: "heap-tree-item-line" }, frame.line),
+      dom.span({ className: "heap-tree-item-colon" }, ":"),
+      dom.span({ className: "heap-tree-item-column" }, frame.column)
+    ];
   }
 });

--- a/devtools/shared/DevToolsUtils.js
+++ b/devtools/shared/DevToolsUtils.js
@@ -813,8 +813,15 @@ exports.openFileStream = function (fileP
 
 exports.isGenerator = function (fn) {
   return typeof fn === "function" && fn.isGenerator();
 };
 
 exports.isPromise = function (p) {
   return p && typeof p.then === "function";
 };
+
+/**
+ * Return true if `thing` is a SavedFrame, false otherwise.
+ */
+exports.isSavedFrame = function (thing) {
+  return Object.prototype.toString.call(thing) === "[object SavedFrame]";
+};