port Significantly improve performance of the end generation (#7919)

patches/server/0742-Manually-inline-methods-in-BlockPosition.patch

@@ -0,0 +1,63 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Spottedleaf <spottedleaf@spottedleaf.dev>
+Date: Mon, 6 Jul 2020 22:48:48 -0700
+Subject: [PATCH] Manually inline methods in BlockPosition
+
+
+diff --git a/src/main/java/net/minecraft/core/BlockPos.java b/src/main/java/net/minecraft/core/BlockPos.java
+index e68cd32a7db88f29d3224b0908119232ab3cf71a..153451ecd5b3c8e8ecb2d5ec91ccd582d4300899 100644
+--- a/src/main/java/net/minecraft/core/BlockPos.java
++++ b/src/main/java/net/minecraft/core/BlockPos.java
+@@ -484,9 +484,9 @@ public class BlockPos extends Vec3i {
+         }
+ 
+         public BlockPos.MutableBlockPos set(int x, int y, int z) {
+-            this.setX(x);
+-            this.setY(y);
+-            this.setZ(z);
++            this.x = x; // Paper - force inline
++            this.y = y; // Paper - force inline
++            this.z = z; // Paper - force inline
+             return this;
+         }
+ 
+@@ -550,19 +550,19 @@ public class BlockPos extends Vec3i {
+         // Paper start - comment out useless overrides @Override - TODO figure out why this is suddenly important to keep
+         @Override
+         public BlockPos.MutableBlockPos setX(int i) {
+-            super.setX(i);
++            this.x = i; // Paper
+             return this;
+         }
+ 
+         @Override
+         public BlockPos.MutableBlockPos setY(int i) {
+-            super.setY(i);
++            this.y = i; // Paper
+             return this;
+         }
+ 
+         @Override
+         public BlockPos.MutableBlockPos setZ(int i) {
+-            super.setZ(i);
++            this.z = i; // Paper
+             return this;
+         }
+         // Paper end
+diff --git a/src/main/java/net/minecraft/core/Vec3i.java b/src/main/java/net/minecraft/core/Vec3i.java
+index 73b3c5f5c037fbe3f588f8f4b0113bef283632a4..c06c7da7de84bc764ea7b9612b3dc2303b49b22e 100644
+--- a/src/main/java/net/minecraft/core/Vec3i.java
++++ b/src/main/java/net/minecraft/core/Vec3i.java
+@@ -19,9 +19,9 @@ public class Vec3i implements Comparable<Vec3i> {
+         return IntStream.of(vec3i.getX(), vec3i.getY(), vec3i.getZ());
+     });
+     public static final Vec3i ZERO = new Vec3i(0, 0, 0);
+-    private int x;
+-    private int y;
+-    private int z;
++    protected int x; // Paper - protected
++    protected int y; // Paper - protected
++    protected int z; // Paper - protected
+ 
+     private static Function<Vec3i, DataResult<Vec3i>> checkOffsetAxes(int maxAbsValue) {
+         return (vec) -> {