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load(libdir + "asm.js");
load(libdir + "simd.js");
load(libdir + "asserts.js");
// Set to true to see more JS debugging spew.
const DEBUG = false;
if (!isSimdAvailable()) {
DEBUG && print("won't run tests as simd extensions aren't activated yet");
quit(0);
}
// Test all bit-casts and normal loads and stores.
var heap = new ArrayBuffer(BUF_MIN);
var asU8 = new Uint8Array(heap);
var allTypes = [
"Int8x16",
"Int16x8",
"Int32x4",
"Uint8x16",
"Uint16x8",
"Uint32x4",
"Float32x4"
];
// Generate a load bit-cast store test function that performs:
//
// function f(a, b) {
// vec = src.load(H, a);
// cast = dst.from«src»Bits(vec);
// store(H, b, cast);
// }
//
// Here, `H` is the heap provided by `heap`.
function test_func(src, dst) {
text = `
"use asm";
var src = glob.SIMD.${src};
var dst = glob.SIMD.${dst};
var ld = src.load;
var st = dst.store;
var bc = dst.from${src}Bits;
var H = new glob.Uint8Array(heap);
function f(a, b) {
a = a|0;
b = b|0;
st(H, b, bc(ld(H, a)));
}
return f;
`;
return asmLink(asmCompile('glob', 'ffi', 'heap', text), this, null, heap);
}
function assertBuf16(a, b) {
for (let i=0; i < 16; i++) {
assertEq(asU8[a+i], asU8[b+i]);
}
}
for (let src of allTypes) {
for (let dst of allTypes) {
// Skip identity conversions.
if (src == dst) continue;
print(src, dst);
let f = test_func(src, dst);
// Initialize with pseudo-random data.
for (let i = 0; i < 64; i++) {
asU8[i] = (i + 17) * 97;
}
// Aligned load/store.
f(0, 16);
assertBuf16(0, 16);
// Unaligned access.
f(1, 27);
assertBuf16(1, 27);
}
}
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