mirror of
https://github.com/PaperMC/Paper.git
synced 2024-11-26 20:46:59 +01:00
76 lines
3.6 KiB
Diff
76 lines
3.6 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Techcable <Techcable@outlook.com>
|
|
Date: Wed, 30 Nov 2016 20:56:58 -0600
|
|
Subject: [PATCH] Improve BlockPosition inlining
|
|
|
|
Normally the JVM can inline virtual getters by having two sets of code, one is the 'optimized' code and the other is the 'deoptimized' code.
|
|
If a single type is used 99% of the time, then its worth it to inline, and to revert to 'deoptimized' the 1% of the time we encounter other types.
|
|
But if two types are encountered commonly, then the JVM can't inline them both, and the call overhead remains.
|
|
|
|
This scenario also occurs with BlockPos and MutableBlockPos.
|
|
The variables in BlockPos are final, so MutableBlockPos can't modify them.
|
|
MutableBlockPos fixes this by adding custom mutable variables, and overriding the getters to access them.
|
|
|
|
This approach with utility methods that operate on MutableBlockPos and BlockPos.
|
|
Specific examples are BlockPosition.up(), and World.isValidLocation().
|
|
It makes these simple methods much slower than they need to be.
|
|
|
|
This should result in an across the board speedup in anything that accesses blocks or does logic with positions.
|
|
|
|
This is based upon conclusions drawn from inspecting the assenmbly generated bythe JIT compiler on my microbenchmarks.
|
|
They had 'callq' (invoke) instead of 'mov' (get from memory) instructions.
|
|
|
|
diff --git a/src/main/java/net/minecraft/server/BaseBlockPosition.java b/src/main/java/net/minecraft/server/BaseBlockPosition.java
|
|
index 63a9ce32fb8b98695e104f7d820cd9b1a8f230b1..6b655b744d31d9660c7521ab596b27bcd92f4d58 100644
|
|
--- a/src/main/java/net/minecraft/server/BaseBlockPosition.java
|
|
+++ b/src/main/java/net/minecraft/server/BaseBlockPosition.java
|
|
@@ -39,7 +39,7 @@ public class BaseBlockPosition implements Comparable<BaseBlockPosition> {
|
|
this(MathHelper.floor(d0), MathHelper.floor(d1), MathHelper.floor(d2));
|
|
}
|
|
|
|
- public boolean equals(Object object) {
|
|
+ public final boolean equals(Object object) { // Paper
|
|
if (this == object) {
|
|
return true;
|
|
} else if (!(object instanceof BaseBlockPosition)) {
|
|
@@ -51,7 +51,7 @@ public class BaseBlockPosition implements Comparable<BaseBlockPosition> {
|
|
}
|
|
}
|
|
|
|
- public int hashCode() {
|
|
+ public final int hashCode() { // Paper
|
|
return (this.getY() + this.getZ() * 31) * 31 + this.getX();
|
|
}
|
|
|
|
@@ -59,15 +59,15 @@ public class BaseBlockPosition implements Comparable<BaseBlockPosition> {
|
|
return this.getY() == baseblockposition.getY() ? (this.getZ() == baseblockposition.getZ() ? this.getX() - baseblockposition.getX() : this.getZ() - baseblockposition.getZ()) : this.getY() - baseblockposition.getY();
|
|
}
|
|
|
|
- public int getX() {
|
|
+ public final int getX() { // Paper
|
|
return this.a;
|
|
}
|
|
|
|
- public int getY() {
|
|
+ public final int getY() { // Paper
|
|
return this.b;
|
|
}
|
|
|
|
- public int getZ() {
|
|
+ public final int getZ() { // Paper
|
|
return this.e;
|
|
}
|
|
|
|
diff --git a/src/main/java/net/minecraft/server/BlockPosition.java b/src/main/java/net/minecraft/server/BlockPosition.java
|
|
index 64e8088d394ddcda59d0209883b778ab74638c02..f112fe95cb89f6196a41252193e9eb44008cfc5f 100644
|
|
--- a/src/main/java/net/minecraft/server/BlockPosition.java
|
|
+++ b/src/main/java/net/minecraft/server/BlockPosition.java
|
|
@@ -82,6 +82,7 @@ public class BlockPosition extends BaseBlockPosition {
|
|
return a(this.getX(), this.getY(), this.getZ());
|
|
}
|
|
|
|
+ public static long asLong(int x, int y, int z) { return a(x, y, z); } // Paper - OBFHELPER
|
|
public static long a(int i, int j, int k) {
|
|
long l = 0L;
|
|
|