From b7dddbe89b19d97e806552e3a79bff17aef3eb09 Mon Sep 17 00:00:00 2001
From: Bimba Shrestha <bimbashrestha@fb.com>
Date: Thu, 11 Jun 2020 14:19:12 -0700
Subject: [PATCH] always attach dict when using dedicatedDictSearch

---
 lib/compress/zstd_compress.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/compress/zstd_compress.c b/lib/compress/zstd_compress.c
index b7d7bcd0..3671a662 100644
--- a/lib/compress/zstd_compress.c
+++ b/lib/compress/zstd_compress.c
@@ -1640,7 +1640,11 @@ static int ZSTD_shouldAttachDict(const ZSTD_CDict* cdict,
                                  U64 pledgedSrcSize)
 {
     size_t cutoff = attachDictSizeCutoffs[cdict->matchState.cParams.strategy];
-    return ( pledgedSrcSize <= cutoff
+    int const useDedicatedDictSearch =
+        params->enableDedicatedDictSearch &&
+        ZSTD_dedicatedDictSearch_isSupported(params->compressionLevel, cdict->dictContentSize);
+    return ( useDedicatedDictSearch
+          || pledgedSrcSize <= cutoff
           || pledgedSrcSize == ZSTD_CONTENTSIZE_UNKNOWN
           || params->attachDictPref == ZSTD_dictForceAttach )
         && params->attachDictPref != ZSTD_dictForceCopy