diff --git a/lldb/include/lldb/Core/DataFileCache.h b/lldb/include/lldb/Core/DataFileCache.h
--- a/lldb/include/lldb/Core/DataFileCache.h
+++ b/lldb/include/lldb/Core/DataFileCache.h
@@ -14,6 +14,7 @@
 #include "lldb/Utility/UUID.h"
 #include "lldb/lldb-forward.h"
 #include "llvm/ADT/DenseMap.h"
+#include "llvm/Support/CachePruning.h"
 #include "llvm/Support/Caching.h"
 #include <mutex>
 
@@ -40,12 +41,20 @@
 
 class DataFileCache {
 public:
-  /// Create a data file cache in the directory path that is specified.
+  /// Create a data file cache in the directory path that is specified, using
+  /// the "LLDBIndexCache" settings as  the basis for the policy.
   ///
   /// Data will be cached in files created in this directory when clients call
   /// DataFileCache::SetCacheData.
   DataFileCache(llvm::StringRef path);
 
+  /// Create a data file cache in the directory path that is specified, using
+  /// the specified policy.
+  ///
+  /// Data will be cached in files created in this directory when clients call
+  /// DataFileCache::SetCacheData.
+  DataFileCache(llvm::StringRef path, llvm::CachePruningPolicy policy);
+
   /// Get cached data from the cache directory for the specified key.
   ///
   /// Keys must be unique for any given data. This function attempts to see if
diff --git a/lldb/source/Core/DataFileCache.cpp b/lldb/source/Core/DataFileCache.cpp
--- a/lldb/source/Core/DataFileCache.cpp
+++ b/lldb/source/Core/DataFileCache.cpp
@@ -20,8 +20,6 @@
 using namespace lldb_private;
 
 DataFileCache::DataFileCache(llvm::StringRef path) {
-  m_cache_dir.SetPath(path);
-
   // Prune the cache based off of the LLDB settings each time we create a cache
   // object.
   ModuleListProperties &properties =
@@ -40,6 +38,12 @@
   policy.Expiration =
       std::chrono::hours(properties.GetLLDBIndexCacheExpirationDays() * 24);
   pruneCache(path, policy);
+  DataFileCache(path, policy);
+}
+
+DataFileCache::DataFileCache(llvm::StringRef path, llvm::CachePruningPolicy policy) {
+  m_cache_dir.SetPath(path);
+  pruneCache(path, policy);
 
   // This lambda will get called when the data is gotten from the cache and
   // also after the data was set for a given key. We only need to take