DivineMC/divinemc-server/minecraft-patches/sources/net/minecraft/server/dedicated/DedicatedServer.java.patch

--- a/net/minecraft/server/dedicated/DedicatedServer.java
+++ b/net/minecraft/server/dedicated/DedicatedServer.java
@@ -195,6 +_,26 @@
         // Purpur end - Purpur config files
         com.destroystokyo.paper.VersionHistoryManager.INSTANCE.getClass(); // Paper - load version history now
 
+        // DivineMC start - Pufferfish SIMD
+        try {
+            gg.pufferfish.pufferfish.simd.SIMDDetection.isEnabled = gg.pufferfish.pufferfish.simd.SIMDDetection.canEnable(LOGGER);
+            gg.pufferfish.pufferfish.simd.SIMDDetection.versionLimited = gg.pufferfish.pufferfish.simd.SIMDDetection.getJavaVersion() < 17 || gg.pufferfish.pufferfish.simd.SIMDDetection.getJavaVersion() > 21;
+        } catch (NoClassDefFoundError | Exception ignored) {
+            ignored.printStackTrace();
+        }
+
+        if (gg.pufferfish.pufferfish.simd.SIMDDetection.isEnabled) {
+            LOGGER.info("SIMD operations detected as functional. Will replace some operations with faster versions.");
+        } else if (gg.pufferfish.pufferfish.simd.SIMDDetection.versionLimited) {
+            LOGGER.warn("Will not enable SIMD! These optimizations are only safely supported on Java 17 and higher.");
+        } else {
+            LOGGER.warn("SIMD operations are available for your server, but are not configured!");
+            LOGGER.warn("To enable additional optimizations, add \"--add-modules=jdk.incubator.vector\" to your startup flags, BEFORE the \"-jar\".");
+            LOGGER.warn("If you have already added this flag, then SIMD operations are not supported on your JVM or CPU.");
+            LOGGER.warn("Debug: Java: {}, test run: {}", System.getProperty("java.version"), gg.pufferfish.pufferfish.simd.SIMDDetection.testRun);
+        }
+        // DivineMC end - Pufferfish SIMD
+
         this.setPvpAllowed(properties.pvp);
         this.setFlightAllowed(properties.allowFlight);
         this.setMotd(properties.motd);