From 35932ab2f1e129dce0d19bfa82787dc4dc262eed Mon Sep 17 00:00:00 2001
From: "W. Felix Handte" <w@felixhandte.com>
Date: Wed, 18 Aug 2021 15:21:43 -0400
Subject: [PATCH] Prefetch Input in Incompressible Sections (+0.25% Speed)

---
 lib/compress/zstd_fast.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/compress/zstd_fast.c b/lib/compress/zstd_fast.c
index 411ffc118..f7df66681 100644
--- a/lib/compress/zstd_fast.c
+++ b/lib/compress/zstd_fast.c
@@ -337,6 +337,7 @@ _start: /* Requires: ip0 */
         /* advance to next positions */
         {
             if (ip1 >= nextStep) {
+                PREFETCH_L1(ip1 + 64);
                 step++;
                 nextStep += kStepIncr;
             }