From a84cdaf35536dfd5e1e4097454a7db6c5c5ff571 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Math=C3=A9o=20CIMBARO?=
 <25774021+DiscowZombie@users.noreply.github.com>
Date: Fri, 17 Jun 2022 01:19:15 +0200
Subject: [PATCH] Added support for optimized SIMD operations (#1570)

---
 README.md               | 8 ++++++++
 scripts/start-finalExec | 6 ++++++
 2 files changed, 14 insertions(+)

diff --git a/README.md b/README.md
index dc9e5d93..f3dcaea4 100644
--- a/README.md
+++ b/README.md
@@ -1570,6 +1570,14 @@ To enable the JVM flags required to fully support the [Flare profiling suite](ht
     
 Flare is built-in to Airplane/Pufferfish/Purpur, and is available in [plugin form](https://github.com/TECHNOVE/FlarePlugin) for other server types.
 
+### Enable support for optimized SIMD operations
+
+To enable support for optimized SIMD operations, the JVM flag can be set with the following variable:
+
+    -e USE_SIMD_FLAGS=true
+
+SIMD optimized operations are supported by Pufferfish and Purpur.
+
 ### Enable timestamps in init logs
 
 Before the container starts the Minecraft Server its output is prefixed with `[init]`, such as
diff --git a/scripts/start-finalExec b/scripts/start-finalExec
index e354b468..1f5c7e3b 100755
--- a/scripts/start-finalExec
+++ b/scripts/start-finalExec
@@ -186,6 +186,12 @@ if isTrue "${USE_FLARE_FLAGS}"; then
   "
 fi
 
+if isTrue "${USE_SIMD_FLAGS}"; then
+  JVM_XX_OPTS="${JVM_XX_OPTS}
+  --add-modules=jdk.incubator.vector
+  "
+fi
+
 if isTrue "${DEBUG_MEMORY}"; then
   log "Memory usage and availability (in MB)"
   uname -a