From 097c9e9586d6b4a415499818a70e9e4cab52e1d3 Mon Sep 17 00:00:00 2001
From: Xe Iaso <me@xeiaso.net>
Date: Sun, 28 Sep 2025 04:03:30 +0000
Subject: [PATCH] feat(web/wasm): use simd128 if available

Signed-off-by: Xe Iaso <me@xeiaso.net>
---
 package-lock.json         | 9 ++++++++-
 package.json              | 5 +++--
 web/js/algorithms/wasm.ts | 9 +++++++--
 3 files changed, 18 insertions(+), 5 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index c1398271..1659a143 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,7 +10,8 @@
       "license": "ISC",
       "dependencies": {
         "@aws-crypto/sha256-js": "^5.2.0",
-        "preact": "^10.27.2"
+        "preact": "^10.27.2",
+        "wasm-feature-detect": "^1.8.0"
       },
       "devDependencies": {
         "cssnano": "^7.1.1",
@@ -2685,6 +2686,12 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/wasm-feature-detect": {
+      "version": "1.8.0",
+      "resolved": "https://registry.npmjs.org/wasm-feature-detect/-/wasm-feature-detect-1.8.0.tgz",
+      "integrity": "sha512-zksaLKM2fVlnB5jQQDqKXXwYHLQUVH9es+5TOOHwGOVJOCeRBCiPjwSg+3tN2AdTCzjgli4jijCH290kXb/zWQ==",
+      "license": "Apache-2.0"
+    },
     "node_modules/wrap-ansi": {
       "version": "7.0.0",
       "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-7.0.0.tgz",
diff --git a/package.json b/package.json
index 619eb520..c57cb444 100644
--- a/package.json
+++ b/package.json
@@ -33,6 +33,7 @@
   },
   "dependencies": {
     "@aws-crypto/sha256-js": "^5.2.0",
-    "preact": "^10.27.2"
+    "preact": "^10.27.2",
+    "wasm-feature-detect": "^1.8.0"
   }
-}
\ No newline at end of file
+}
diff --git a/web/js/algorithms/wasm.ts b/web/js/algorithms/wasm.ts
index 83032797..2f4bb6bd 100644
--- a/web/js/algorithms/wasm.ts
+++ b/web/js/algorithms/wasm.ts
@@ -1,4 +1,5 @@
 import { u } from "../../lib/xeact";
+import { simd } from "wasm-feature-detect";
 
 type ProgressCallback = (nonce: number) => void;
 
@@ -22,9 +23,13 @@ export default function process(
   console.debug(options);
   const { basePrefix, version, algorithm } = options;
 
-  let wasmFeatures = "baseline";
-
   return new Promise(async (resolve, reject) => {
+    let wasmFeatures = "baseline";
+
+    if (await simd()) {
+      wasmFeatures = "simd128";
+    }
+
     const module = await fetch(u(`${basePrefix}/.within.website/x/cmd/anubis/static/wasm/${wasmFeatures}/${algorithm}.wasm?cacheBuster=${version}`))
       .then(x => WebAssembly.compileStreaming(x));