From 265f09429d84ecc8ff0f5fdd6eb5eae9f3b5134b Mon Sep 17 00:00:00 2001
From: corysmith <corysmith@google.com>
Date: Tue, 14 Aug 2018 10:13:43 -0700
Subject: Optimize the shrinking pass to prevent timeouts.

RELNOTES: None
PiperOrigin-RevId: 208666806
---
 .../devtools/build/android/aapt2/ProtoResourceUsageAnalyzer.java     | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/tools/android/java/com/google/devtools/build/android/aapt2/ProtoResourceUsageAnalyzer.java b/src/tools/android/java/com/google/devtools/build/android/aapt2/ProtoResourceUsageAnalyzer.java
index a1cd448827..c91ef65754 100644
--- a/src/tools/android/java/com/google/devtools/build/android/aapt2/ProtoResourceUsageAnalyzer.java
+++ b/src/tools/android/java/com/google/devtools/build/android/aapt2/ProtoResourceUsageAnalyzer.java
@@ -139,7 +139,10 @@ public class ProtoResourceUsageAnalyzer extends ResourceUsageAnalyzer {
         resource.references.forEach(
             r -> {
               referenceLog.put(r, resource);
-              queue.add(r);
+              // add if it has not been marked reachable, therefore processed.
+              if (!reachable.contains(r)) {
+                queue.add(r);
+              }
             });
       }
       // if we see it, it is reachable.
-- 
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