Optimize RegistryDelegate#hashCode()

forge/src/main/java/org/embeddedt/modernfix/forge/mixin/perf/forge_registry_lambda/RegistryDelegateMixin.java

@@ -0,0 +1,25 @@
+package org.embeddedt.modernfix.forge.mixin.perf.forge_registry_lambda;
+
+import net.minecraft.resources.ResourceLocation;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Overwrite;
+import org.spongepowered.asm.mixin.Shadow;
+
+@Mixin(targets = {"net/minecraftforge/registries/RegistryDelegate"})
+public class RegistryDelegateMixin {
+    @Shadow private ResourceLocation name;
+
+    /**
+     * @author embeddedt
+     * @reason avoid allocation in hashCode()
+     */
+    @Overwrite(remap = false)
+    public int hashCode() {
+        ResourceLocation name = this.name;
+        if(name != null) {
+            return name.hashCode();
+        } else {
+            return 0;
+        }
+    }
+}