vyre 0.4.0

GPU compute intermediate representation with a standard operation library
Documentation 
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@group(0) @binding(0) var<storage, read> input_words: array<u64>;
@group(0) @binding(1) var<storage, read_write> output_words: array<u64>;

const SHA512_K: array<u64, 80> = array<u64, 80>(
  0x428a2f98d728ae22u, 0x7137449123ef65cdu, 0xb5c0fbcfec4d3b2fu, 0xe9b5dba58189dbbcu,
  0x3956c25bf348b538u, 0x59f111f1b605d019u, 0x923f82a4af194f9bu, 0xab1c5ed5da6d8118u,
  0xd807aa98a3030242u, 0x12835b0145706fbeu, 0x243185be4ee4b28cu, 0x550c7dc3d5ffb4e2u,
  0x72be5d74f27b896fu, 0x80deb1fe3b1696b1u, 0x9bdc06a725c71235u, 0xc19bf174cf692694u,
  0xe49b69c19ef14ad2u, 0xefbe4786384f25e3u, 0x0fc19dc68b8cd5b5u, 0x240ca1cc77ac9c65u,
  0x2de92c6f592b0275u, 0x4a7484aa6ea6e483u, 0x5cb0a9dcbd41fbd4u, 0x76f988da831153b5u,
  0x983e5152ee66dfabu, 0xa831c66d2db43210u, 0xb00327c898fb213fu, 0xbf597fc7beef0ee4u,
  0xc6e00bf33da88fc2u, 0xd5a79147930aa725u, 0x06ca6351e003826fu, 0x142929670a0e6e70u,
  0x27b70a8546d22ffcu, 0x2e1b21385c26c926u, 0x4d2c6dfc5ac42aedu, 0x53380d139d95b3dfu,
  0x650a73548baf63deu, 0x766a0abb3c77b2a8u, 0x81c2c92e47edaee6u, 0x92722c851482353bu,
  0xa2bfe8a14cf10364u, 0xa81a664bbc423001u, 0xc24b8b70d0f89791u, 0xc76c51a30654be30u,
  0xd192e819d6ef5218u, 0xd69906245565a910u, 0xf40e35855771202au, 0x106aa07032bbd1b8u,
  0x19a4c116b8d2d0c8u, 0x1e376c085141ab53u, 0x2748774cdf8eeb99u, 0x34b0bcb5e19b48a8u,
  0x391c0cb3c5c95a63u, 0x4ed8aa4ae3418acbu, 0x5b9cca4f7763e373u, 0x682e6ff3d6b2b8a3u,
  0x748f82ee5defb2fcu, 0x78a5636f43172f60u, 0x84c87814a1f0ab72u, 0x8cc702081a6439ecu,
  0x90befffa23631e28u, 0xa4506cebde82bde9u, 0xbef9a3f7b2c67915u, 0xc67178f2e372532bu,
  0xca273eceea26619cu, 0xd186b8c721c0c207u, 0xeada7dd6cde0eb1eu, 0xf57d4f7fee6ed178u,
  0x06f067aa72176fbau, 0x0a637dc5a2c898a6u, 0x113f9804bef90daeu, 0x1b710b35131c471bu,
  0x28db77f523047d84u, 0x32caab7b40c72493u, 0x3c9ebe0a15c9bebcu, 0x431d67c49c100d4cu,
  0x4cc5d4becb3e42b6u, 0x597f299cfc657e2au, 0x5fcb6fab3ad6faecu, 0x6c44198c4a475817u);

fn sha512_rotr(x: u64, n: u32) -> u64 { return (x >> n) | (x << ((64u - n) & 63u)); }
fn sha512_ch(x: u64, y: u64, z: u64) -> u64 { return (x & y) ^ ((~x) & z); }
fn sha512_maj(x: u64, y: u64, z: u64) -> u64 { return (x & y) ^ (x & z) ^ (y & z); }
fn sha512_b0(x: u64) -> u64 { return sha512_rotr(x, 28u) ^ sha512_rotr(x, 34u) ^ sha512_rotr(x, 39u); }
fn sha512_b1(x: u64) -> u64 { return sha512_rotr(x, 14u) ^ sha512_rotr(x, 18u) ^ sha512_rotr(x, 41u); }
fn sha512_s0(x: u64) -> u64 { return sha512_rotr(x, 1u) ^ sha512_rotr(x, 8u) ^ (x >> 7u); }
fn sha512_s1(x: u64) -> u64 { return sha512_rotr(x, 19u) ^ sha512_rotr(x, 61u) ^ (x >> 6u); }

@compute @workgroup_size(1, 1, 1)
fn hash_sha512(@builtin(global_invocation_id) id: vec3<u32>) {
  if (id.x != 0u) { return; }
  var w: array<u64, 80>;
  for (var i = 0u; i < 80u; i = i + 1u) { w[i] = 0u; }
  let words = min(arrayLength(&input_words), 14u);
  for (var i = 0u; i < words; i = i + 1u) { w[i] = input_words[i]; }
  let bytes = words * 8u;
  if (words < 16u) { w[words] = 0x8000000000000000u; }
  w[15u] = u64(bytes) * 8u;
  for (var i = 16u; i < 80u; i = i + 1u) { w[i] = sha512_s1(w[i - 2u]) + w[i - 7u] + sha512_s0(w[i - 15u]) + w[i - 16u]; }
  var a = 0x6a09e667f3bcc908u; var b = 0xbb67ae8584caa73bu; var c = 0x3c6ef372fe94f82bu; var d = 0xa54ff53a5f1d36f1u;
  var e = 0x510e527fade682d1u; var f = 0x9b05688c2b3e6c1fu; var g = 0x1f83d9abfb41bd6bu; var h = 0x5be0cd19137e2179u;
  for (var i = 0u; i < 80u; i = i + 1u) {
    let t1 = h + sha512_b1(e) + sha512_ch(e, f, g) + SHA512_K[i] + w[i];
    let t2 = sha512_b0(a) + sha512_maj(a, b, c);
    h = g; g = f; f = e; e = d + t1; d = c; c = b; b = a; a = t1 + t2;
  }
  output_words[0u] = 0x6a09e667f3bcc908u + a; output_words[1u] = 0xbb67ae8584caa73bu + b;
  output_words[2u] = 0x3c6ef372fe94f82bu + c; output_words[3u] = 0xa54ff53a5f1d36f1u + d;
  output_words[4u] = 0x510e527fade682d1u + e; output_words[5u] = 0x9b05688c2b3e6c1fu + f;
  output_words[6u] = 0x1f83d9abfb41bd6bu + g; output_words[7u] = 0x5be0cd19137e2179u + h;
}