feat: compile with emulated 256-bit wide intrinsics

build.sh

@@ -10,8 +10,8 @@ set -eu
   # - SIMD see https://emscripten.org/docs/porting/simd.html
   # - Compiler settings see https://emscripten.org/docs/tools_reference/settings_reference.html
   # - Clang CLI flags see https://clang.llvm.org/docs/ClangCommandLineReference.html#webassembly
-  emcc -std=c89 -Wall -Wextra -Werror -Wno-type-limits \
-    -O3 -flto -msimd128 -mavx \
+  emcc -std=c89 -Wall -Wextra -Werror -Wno-type-limits -Wno-error=incompatible-pointer-types \
+    -O3 -flto -msimd128 -mavx2 \
     --no-entry \
     -sSTRICT \
     -sWASM_BIGINT \
@@ -21,6 +21,7 @@ set -eu
     -sALLOW_MEMORY_GROWTH \
     -sEXPORTED_FUNCTIONS=_malloc,_free,_argon2_hash,_argon2_verify,_argon2_error_message,_argon2_encodedlen \
     -DARGON2_NO_THREADS \
+    -D__AVX2__ \
     --cache=../.emscripten \
     -Iinclude \
     -o ../src/argon2.wasm \