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ada68f0d1a
- Use modern API which introduced since Java 10 to get java major version - Remove useless fields in SIMD util, Java 21+ supports SIMD.
127 lines
3.9 KiB
Diff
127 lines
3.9 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Martijn Muijsers <martijnmuijsers@live.nl>
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Date: Thu, 24 Nov 2022 01:21:32 +0100
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Subject: [PATCH] SIMD support
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License: GPL-3.0 (https://www.gnu.org/licenses/gpl-3.0.html)
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Gale - https://galemc.org
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This patch is based on the following patch:
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"Add SIMD utilities"
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By: Kevin Raneri <kevin.raneri@gmail.com>
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As part of: Pufferfish (https://github.com/pufferfish-gg/Pufferfish)
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Licensed under: GPL-3.0 (https://www.gnu.org/licenses/gpl-3.0.html)
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diff --git a/src/main/java/gg/pufferfish/pufferfish/simd/SIMDChecker.java b/src/main/java/gg/pufferfish/pufferfish/simd/SIMDChecker.java
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new file mode 100644
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index 0000000000000000000000000000000000000000..8d614483b8011d47e88ace3da28e072d1febaef7
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--- /dev/null
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+++ b/src/main/java/gg/pufferfish/pufferfish/simd/SIMDChecker.java
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@@ -0,0 +1,41 @@
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+// Gale - Pufferfish - SIMD support
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+
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+package gg.pufferfish.pufferfish.simd;
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+
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+import jdk.incubator.vector.FloatVector;
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+import jdk.incubator.vector.IntVector;
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+import jdk.incubator.vector.VectorSpecies;
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+
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+/**
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+ * Basically, java is annoying and we have to push this out to its own class.
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+ */
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+@Deprecated
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+public class SIMDChecker {
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+
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+ public static void initialize() {
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+ if (SIMDDetection.isInitialized()) {
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+ return;
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+ }
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+ SIMDDetection.setInitialized();
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+ try {
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+ VectorSpecies<Integer> ISPEC = IntVector.SPECIES_PREFERRED;
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+ VectorSpecies<Float> FSPEC = FloatVector.SPECIES_PREFERRED;
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+
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+ SIMDDetection.intVectorBitSize = ISPEC.vectorBitSize();
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+ SIMDDetection.floatVectorBitSize = FSPEC.vectorBitSize();
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+
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+ SIMDDetection.intElementSize = ISPEC.elementSize();
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+ SIMDDetection.floatElementSize = FSPEC.elementSize();
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+
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+ SIMDDetection.testRunCompleted = true;
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+
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+ if (ISPEC.elementSize() < 2 || FSPEC.elementSize() < 2) {
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+ SIMDDetection.unsupportingLaneSize = true;
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+ return;
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+ }
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+
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+ SIMDDetection.isEnabled = true;
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+ } catch (Throwable ignored) {} // Basically, we don't do anything. This lets us detect if it's not functional and disable it.
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+ }
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+
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+}
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diff --git a/src/main/java/gg/pufferfish/pufferfish/simd/SIMDDetection.java b/src/main/java/gg/pufferfish/pufferfish/simd/SIMDDetection.java
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new file mode 100644
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index 0000000000000000000000000000000000000000..df3ef7bface99072b5bfbcdc5bf653a01a9c798c
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--- /dev/null
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+++ b/src/main/java/gg/pufferfish/pufferfish/simd/SIMDDetection.java
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@@ -0,0 +1,59 @@
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+// Gale - Pufferfish - SIMD support
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+
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+package gg.pufferfish.pufferfish.simd;
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+
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+public class SIMDDetection {
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+
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+ private static boolean isInitialized = false;
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+ static int intVectorBitSize;
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+ static int floatVectorBitSize;
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+ static int intElementSize;
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+ static int floatElementSize;
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+ static boolean testRunCompleted;
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+ static boolean unsupportingLaneSize;
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+ static boolean isEnabled;
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+
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+ @SuppressWarnings("deprecation")
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+ public static void initialize() {
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+ try {
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+ SIMDChecker.initialize();
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+ } catch (Throwable ignored) {}
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+ }
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+
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+ static void setInitialized() {
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+ isInitialized = true;
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+ }
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+
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+ public static boolean isInitialized() {
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+ return isInitialized;
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+ }
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+
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+ public static int intVectorBitSize() {
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+ return intVectorBitSize;
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+ }
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+
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+ public static int floatVectorBitSize() {
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+ return floatVectorBitSize;
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+ }
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+
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+ public static int intElementSize() {
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+ return intElementSize;
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+ }
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+
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+ public static int floatElementSize() {
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+ return floatElementSize;
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+ }
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+
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+ public static boolean testRunCompleted() {
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+ return testRunCompleted;
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+ }
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+
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+ public static boolean unsupportingLaneSize() {
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+ return unsupportingLaneSize;
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+ }
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+
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+ public static boolean isEnabled() {
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+ return isEnabled;
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+ }
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+
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+}
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