111 lines
5.3 KiB
Metal
111 lines
5.3 KiB
Metal
#include <metal_stdlib>
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using namespace metal;
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#define MASK 0x0fffffffu
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constant uint SEEDW[8] = { 0x667d0fbdu, 0x7b8e5963u, 0x31c67e5eu, 0x4529ddc6u, 0xef19d6d8u, 0xaccf6211u, 0xda0aed32u, 0xabc6df31u };
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inline uint splitmix32(uint x) {
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x ^= x >> 16; x *= 0x7feb352du;
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x ^= x >> 15; x *= 0x846ca68bu;
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x ^= x >> 16;
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return x;
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}
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inline uint rotl_imm(uint x, uint n) { return (x << n) | (x >> (32u - n)); } // n in 1..31
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inline uint rotr_var(uint x, uint n) { n &= 31u; return (x >> n) | (x << ((32u - n) & 31u)); }
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inline uint ds_elem(uint i, uint d0, uint d1) {
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uint x = i ^ d0;
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x *= 0x9E3779B1u; x ^= x >> 15;
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x += d1;
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x *= 0x85EBCA77u; x ^= x >> 13;
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x *= 0xC2B2AE3Du; x ^= x >> 16;
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return x;
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}
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// Header-bound variant: the init words come from buffer 3 (bind.rs), not from SEEDW.
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kernel void igneum_hash_bound(device const uint* dataset [[buffer(0)]],
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device ulong* out [[buffer(1)]],
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constant uint& baseNonce [[buffer(2)]],
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constant uint* initw [[buffer(3)]],
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uint gid [[thread_position_in_grid]]) {
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uint nonce = baseNonce + gid;
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uint r0, r1, r2, r3, r4, r5, r6, r7;
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{ uint x = nonce ^ initw[0]; x += 0x9e3779b9u * 1u; x = splitmix32(x); r0 = x ^ initw[1]; }
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{ uint x = nonce ^ initw[1]; x += 0x9e3779b9u * 2u; x = splitmix32(x); r1 = x ^ initw[2]; }
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{ uint x = nonce ^ initw[2]; x += 0x9e3779b9u * 3u; x = splitmix32(x); r2 = x ^ initw[3]; }
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{ uint x = nonce ^ initw[3]; x += 0x9e3779b9u * 4u; x = splitmix32(x); r3 = x ^ initw[4]; }
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{ uint x = nonce ^ initw[4]; x += 0x9e3779b9u * 5u; x = splitmix32(x); r4 = x ^ initw[5]; }
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{ uint x = nonce ^ initw[5]; x += 0x9e3779b9u * 6u; x = splitmix32(x); r5 = x ^ initw[6]; }
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{ uint x = nonce ^ initw[6]; x += 0x9e3779b9u * 7u; x = splitmix32(x); r6 = x ^ initw[7]; }
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{ uint x = nonce ^ initw[7]; x += 0x9e3779b9u * 8u; x = splitmix32(x); r7 = x ^ initw[0]; }
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for (uint it = 0u; it < 8u; ++it) {
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uint sel = r0;
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r4 = r4 + r5 + select(0xea86e152u, 0x5810667au, ((sel >> 13u) & 1u) != 0u); // 0
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r2 = r2 ^ simd_shuffle_xor(r0, (ushort)4); // 1
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r3 = r3 + r2 + select(0x2cccb6cau, 0x642e66dbu, ((sel >> 10u) & 1u) != 0u); // 2
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r0 = rotl_imm(r0, 19u); // 3
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r7 = rotr_var(r7, r6); // 4
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r7 = r7 + r4 + select(0xee02465fu, 0xc1535555u, ((sel >> 21u) & 1u) != 0u); // 5
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r1 = mulhi(r1, r7); // 6
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r4 = r4 ^ dataset[r2 & MASK]; // 7
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r7 = r7 ^ dataset[r4 & MASK]; // 8
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r0 = r0 ^ dataset[r3 & MASK]; // 9
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r5 = r5 ^ dataset[r1 & MASK]; // 10
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r1 = r1 ^ dataset[r5 & MASK]; // 11
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r3 = mulhi(r3, r5); // 12
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r1 = r1 ^ dataset[r3 & MASK]; // 13
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r0 = r0 - r3; // 14
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r5 = r1 * r3 + r5; // 15
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r6 = mulhi(r6, r1); // 16
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r5 = r5 + r2 + select(0x697b3d00u, 0x8b965b57u, ((sel >> 28u) & 1u) != 0u); // 17
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r0 = mulhi(r0, r6); // 18
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r5 = rotr_var(r5, r3); // 19
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r5 = mulhi(r5, r2); // 20
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r1 = r1 + r0 + select(0xebcf247au, 0x6d7e8d05u, ((sel >> 1u) & 1u) != 0u); // 21
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r7 = r7 + r5 + select(0xf66e7017u, 0xb9e3577eu, ((sel >> 12u) & 1u) != 0u); // 22
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r1 = mulhi(r1, r5); // 23
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r2 = r2 - r5; // 24
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r7 = r7 + r4 + select(0x08ffa6c7u, 0x699ef1bbu, ((sel >> 2u) & 1u) != 0u); // 25
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r3 = r3 ^ simd_shuffle_xor(r4, (ushort)2); // 26
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r7 = r7 + r1 + select(0xe60fea84u, 0xb4ead2fbu, ((sel >> 14u) & 1u) != 0u); // 27
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r3 = r3 + r1 + select(0x65c76dabu, 0x8f30d21du, ((sel >> 6u) & 1u) != 0u); // 28
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r2 = r2 ^ dataset[r1 & MASK]; // 29
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r5 = r5 ^ dataset[r7 & MASK]; // 30
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r2 = r2 ^ dataset[r5 & MASK]; // 31
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r1 = r1 ^ simd_shuffle_xor(r7, (ushort)4); // 32
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r4 = r5 * r7 + r4; // 33
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r4 = r4 + r2 + select(0x0480debeu, 0xc7ce690cu, ((sel >> 21u) & 1u) != 0u); // 34
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r3 = r3 ^ simd_shuffle_xor(r7, (ushort)8); // 35
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r7 = r7 + r1 + select(0xc53b542eu, 0xe10c2c95u, ((sel >> 2u) & 1u) != 0u); // 36
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r5 = r5 ^ r7; // 37
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r2 = r2 | r1; // 38
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r1 = mulhi(r1, r0); // 39
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r6 = rotl_imm(r6, 19u); // 40
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r4 = mulhi(r4, r6); // 41
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r6 = r6 - r0; // 42
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r6 = r6 ^ simd_shuffle_xor(r3, (ushort)4); // 43
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r4 = r4 ^ dataset[r2 & MASK]; // 44
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r1 = r1 ^ r3; // 45
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r7 = r7 ^ dataset[r0 & MASK]; // 46
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r3 = r3 ^ dataset[r1 & MASK]; // 47
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r5 = r5 * r3; // 48
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r1 = r1 - r5; // 49
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r2 = rotl_imm(r2, 8u); // 50
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r1 = r1 + r5 + select(0xa900fec4u, 0x77b9bd43u, ((sel >> 23u) & 1u) != 0u); // 51
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r4 = r4 ^ dataset[r7 & MASK]; // 52
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r2 = r2 - r7; // 53
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r4 = r4 ^ r0; // 54
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r1 = r1 + r6 + select(0xe09f54e9u, 0x83e825bfu, ((sel >> 14u) & 1u) != 0u); // 55
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r2 = r2 ^ dataset[r4 & MASK]; // 56
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r0 = r1 * r4 + r0; // 57
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r3 = r3 ^ dataset[r5 & MASK]; // 58
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r5 = r5 | r6; // 59
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r6 = r5 * r7 + r6; // 60
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r4 = rotl_imm(r4, 28u); // 61
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r5 = mulhi(r5, r0); // 62
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r3 = r3 ^ dataset[r6 & MASK]; // 63
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}
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uint lo = r0 ^ rotl_imm(r1, 7u) ^ rotl_imm(r2, 14u) ^ rotl_imm(r3, 21u);
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uint hi = r4 ^ rotl_imm(r5, 9u) ^ rotl_imm(r6, 18u) ^ rotl_imm(r7, 27u);
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out[gid] = ((ulong)hi << 32) | (ulong)lo;
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}
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