Cache hash codes for filtering policies.

--
MOS_MIGRATED_REVID=124600066

1 files changed, 3 insertions, 1 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/pkgcache/FilteringPolicies.java b/src/main/java/com/google/devtools/build/lib/pkgcache/FilteringPolicies.java
index 4466010f9d..be4d892270 100644
--- a/src/main/java/com/google/devtools/build/lib/pkgcache/FilteringPolicies.java
+++ b/src/main/java/com/google/devtools/build/lib/pkgcache/FilteringPolicies.java
@@ -42,9 +42,11 @@ public final class FilteringPolicies {
    * Base class for singleton filtering policies.
    */
   private abstract static class AbstractFilteringPolicy implements FilteringPolicy {
+    private final int hashCode = getClass().getSimpleName().hashCode();
+
     @Override
     public int hashCode() {
-      return getClass().getSimpleName().hashCode();
+      return hashCode;
     }
 
     @Override