Very slightly faster for my GPU. This had some tweaking done in the order of addition of P1 and P3. The result is increase in GPRs, but a decent drop in cycles/ALUs. Also, an increase in hashing speed!
// This file is in the public domain
#ifdef VECTORS8
typedef uint8 u;
#elif defined VECTORS4
typedef uint4 u;
#elif defined VECTORS
typedef uint2 u;
#else
typedef uint u;
#endif
__constant uint K[64] = {
0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
};
__constant uint ConstW[128] = {
0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x80000000U, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000280U,
0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
0x80000000U, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000100U,
0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
};
__constant uint H[8] = {
0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19
};
#ifdef BITALIGN
#pragma OPENCL EXTENSION cl_amd_media_ops : enable
#define rot(x, y) amd_bitalign(x, x, (uint)(32 - y))
#else
#define rot(x, y) rotate(x, (uint)y)
#endif
// Some AMD devices have the BFI_INT opcode, which behaves exactly like the
// SHA-256 Ch function, but provides it in exactly one instruction. If
// detected, use it for Ch. Otherwise, use bitselect() for Ch.
#ifdef BFI_INT
// Well, slight problem... It turns out BFI_INT isn't actually exposed to
// OpenCL (or CAL IL for that matter) in any way. However, there is
// a similar instruction, BYTE_ALIGN_INT, which is exposed to OpenCL via
// amd_bytealign, takes the same inputs, and provides the same output.
// We can use that as a placeholder for BFI_INT and have the application
// patch it after compilation.
// This is the BFI_INT function
#define Ch(x, y, z) amd_bytealign(x,y,z)
// Ma can also be implemented in terms of BFI_INT...
#define Ma(z, x, y) amd_bytealign(z^x,y,x)
#else
#define Ch(x, y, z) bitselect(z,y,x)
#define Ma(x, y, z) bitselect(x,y,(z^x))
#endif
//Various intermediate calculations for each SHA round
#define s0(n) (S0(Vals[(0 + 128 - (n)) % 8]))
#define S0(n) (rot(n, 30u)^rot(n, 19u)^rot(n,10u))
#define s1(n) (S1(Vals[(4 + 128 - (n)) % 8]))
#define S1(n) (rot(n, 26u)^rot(n, 21u)^rot(n, 7u))
#define ch(n) Ch(Vals[(4 + 128 - (n)) % 8],Vals[(5 + 128 - (n)) % 8],Vals[(6 + 128 - (n)) % 8])
#define maj(n) Ma(Vals[(1 + 128 - (n)) % 8],Vals[(2 + 128 - (n)) % 8],Vals[(0 + 128 - (n)) % 8])
//t1 calc when W is already calculated
#define t1(n) K[(n) % 64] + Vals[(7 + 128 - (n)) % 8] + W[(n)] + s1(n) + ch(n)
//t1 calc which calculates W
#define t1W(n) K[(n) % 64] + Vals[(7 + 128 - (n)) % 8] + W(n) + s1(n) + ch(n)
//Used for constant W Values (the compiler optimizes out zeros)
#define t1C(n) (K[(n) % 64]+ ConstW[(n)]) + Vals[(7 + 128 - (n)) % 8] + s1(n) + ch(n)
//t2 Calc
#define t2(n) maj(n) + s0(n)
#define rotC(x,n) (x<> (32-n))
//W calculation used for SHA round
#define W(n) (W[n] = P4(n) + P3(n) + P2(n) + P1(n))
//Partial W calculations (used for the begining where only some values are nonzero)
#define P1(n) ((rot(W[(n)-2],15u)^rot(W[(n)-2],13u)^((W[(n)-2])>>10U)))
#define P2(n) ((rot(W[(n)-15],25u)^rot(W[(n)-15],14u)^((W[(n)-15])>>3U)))
#define p1(x) ((rot(x,15u)^rot(x,13u)^((x)>>10U)))
#define p2(x) ((rot(x,25u)^rot(x,14u)^((x)>>3U)))
#define P3(n) W[n-7]
#define P4(n) W[n-16]
//Partial Calcs for constant W values
#define P1C(n) ((rotC(ConstW[(n)-2],15)^rotC(ConstW[(n)-2],13)^((ConstW[(n)-2])>>10U)))
#define P2C(n) ((rotC(ConstW[(n)-15],25)^rotC(ConstW[(n)-15],14)^((ConstW[(n)-15])>>3U)))
#define P3C(x) ConstW[x-7]
#define P4C(x) ConstW[x-16]
//SHA round with built in W calc
#define sharoundW(n) Barrier1(n); Vals[(3 + 128 - (n)) % 8] += t1W(n); Vals[(7 + 128 - (n)) % 8] = t1W(n) + t2(n);
//SHA round without W calc
#define sharound(n) Barrier2(n); Vals[(3 + 128 - (n)) % 8] += t1(n); Vals[(7 + 128 - (n)) % 8] = t1(n) + t2(n);
//SHA round for constant W values
#define sharoundC(n) Barrier2(n); Vals[(3 + 128 - (n)) % 8] += t1C(n); Vals[(7 + 128 - (n)) % 8] = t1C(n) + t2(n);
//The compiler is stupid... I put this in there only to stop the compiler from (de)optimizing the order
#define Barrier1(n) t1 = t1C((n+1))
#define Barrier2(n) t1 = t1C((n))
__kernel
//removed this to allow detection of invalid work size
//__attribute__((reqd_work_group_size(WORKSIZE, 1, 1)))
void search( const uint state0, const uint state1, const uint state2, const uint state3,
const uint state4, const uint state5, const uint state6, const uint state7,
const uint B1, const uint C1, const uint D1,
const uint F1, const uint G1, const uint H1,
#ifndef GOFFSET
const u base,
#endif
const uint W16, const uint W17,
const uint PreVal4, const uint PreVal0,
const uint PreW31, const uint PreW32,
const uint PreW19, const uint PreW20,
__global uint * output)
{
u W[124];
u Vals[8];
//Dummy Variable to prevent compiler from reordering between rounds
u t1;
W[16] = W16;
W[17] = W17;
#ifdef VECTORS8
#ifdef GOFFSET
W[3] = ((uint)get_global_id(0) << 3) + (u)(0, 1, 2, 3, 4, 5, 6, 7);
uint r = rot(W[3].s0,25u)^rot(W[3].s0,14u)^((W[3].s0)>>3U);
#else
W[3] = base + (uint)(get_local_id(0)) * 8u + (uint)(get_group_id(0)) * (WORKSIZE * 8u);
uint r = rot(W[3].s0,25u)^rot(W[3].s0,14u)^((W[3].s0)>>3U);
//Since only the 2 LSB is opposite between the nonces, we can save an instruction by flipping the 4 bits in W18 rather than the 1 bit in W3
W[18] = PreW20 + (u){r, r ^ 0x2004000U, r ^ 0x4008000U, r ^ 0x600C000U, r ^ 0x8010000U, r ^ 0xA050000U, r ^ 0xC090000U, r ^ 0xE0D0000U};
#endif
#elif defined VECTORS4
#ifdef GOFFSET
W[3] = ((uint)get_global_id(0) << 2) + (u)(0, 1, 2, 3);
uint r = rot(W[3].s0,25u)^rot(W[3].s0,14u)^((W[3].s0)>>3U);
#else
//Less dependencies to get both the local id and group id and then add them
W[3] = base + (uint)(get_local_id(0)) * 4u + (uint)(get_group_id(0)) * (WORKSIZE * 4u);
uint r = rot(W[3].s0,25u)^rot(W[3].s0,14u)^((W[3].s0)>>3U);
//Since only the 2 LSB is opposite between the nonces, we can save an instruction by flipping the 4 bits in W18 rather than the 1 bit in W3
W[18] = PreW20 + (u){r, r ^ 0x2004000U, r ^ 0x4008000U, r ^ 0x600C000U};
#endif
#elif defined VECTORS
#ifdef GOFFSET
W[3] = ((uint)get_global_id(0) << 1) + (u)(0, 1,);
uint r = rot(W[3].s0,25u)^rot(W[3].s0,14u)^((W[3].s0)>>3U);
#else
W[3] = base + (uint)(get_local_id(0)) * 2u + (uint)(get_group_id(0)) * (WORKSIZE * 2u);
uint r = rot(W[3].s0,25u)^rot(W[3].s0,14u)^((W[3].s0)>>3U);
W[18] = PreW20 + (u){r, r ^ 0x2004000U};
#endif
#else
#ifdef GOFFSET
W[3] = ((uint)get_global_id(0));
uint r = rot(W[3].s0,25u)^rot(W[3].s0,14u)^((W[3].s0)>>3U);
#else
W[3] = base + get_local_id(0) + get_group_id(0) * (WORKSIZE);
u r = rot(W[3],25u)^rot(W[3],14u)^((W[3])>>3U);
W[18] = PreW20 + r;
#endif
#endif
//the order of the W calcs and Rounds is like this because the compiler needs help finding how to order the instructions
//Vals[0]=state0;
Vals[0] = PreVal0 + W[3];
Vals[1]=B1;
Vals[2]=C1;
Vals[3]=D1;
//Vals[4]=PreVal4;
Vals[4] = PreVal4 + W[3];
Vals[5]=F1;
Vals[6]=G1;
Vals[7]=H1;
sharoundC(4);
W[19] = PreW19 + W[3];
sharoundC(5);
W[20] = P4C(20) + P1(20);
sharoundC(6);
W[21] = P1(21);
sharoundC(7);
W[22] = P3C(22) + P1(22);
sharoundC(8);
W[23] = W[16] + P1(23);
sharoundC(9);
W[24] = W[17] + P1(24);
sharoundC(10);
W[25] = P3(25) + P1(25);
W[26] = P3(26) + P1(26);
sharoundC(11);
W[27] = P3(27) + P1(27);
W[28] = P3(28) + P1(28);
sharoundC(12);
W[29] = P3(29) + P1(29);
sharoundC(13);
W[30] = P3(30) + P2C(30) + P1(30);
W[31] = PreW31 + (P3(31) + P1(31));
sharoundC(14);
W[32] = PreW32 + (P3(32) + P1(32));
sharoundC(15);
sharound(16);
sharound(17);
sharound(18);
sharound(19);
sharound(20);
sharound(21);
sharound(22);
sharound(23);
sharound(24);
sharound(25);
sharound(26);
sharound(27);
sharound(28);
sharound(29);
sharound(30);
sharound(31);
sharound(32);
sharoundW(33);
sharoundW(34);
sharoundW(35);
sharoundW(36);
sharoundW(37);
sharoundW(38);
sharoundW(39);
sharoundW(40);
sharoundW(41);
sharoundW(42);
sharoundW(43);
sharoundW(44);
sharoundW(45);
sharoundW(46);
sharoundW(47);
sharoundW(48);
sharoundW(49);
sharoundW(50);
sharoundW(51);
sharoundW(52);
sharoundW(53);
sharoundW(54);
sharoundW(55);
sharoundW(56);
sharoundW(57);
sharoundW(58);
sharoundW(59);
sharoundW(60);
sharoundW(61);
sharoundW(62);
sharoundW(63);
W[64]=state0+Vals[0];
W[65]=state1+Vals[1];
W[66]=state2+Vals[2];
W[67]=state3+Vals[3];
W[68]=state4+Vals[4];
W[69]=state5+Vals[5];
W[70]=state6+Vals[6];
W[71]=state7+Vals[7];
const u Temp = (0xb0edbdd0U + K[0]) + W[64];
Vals[0]=H[0];
Vals[1]=H[1];
Vals[2]=H[2];
Vals[3]=0xa54ff53aU + Temp;
Vals[4]=H[4];
Vals[5]=H[5];
Vals[6]=H[6];
Vals[7]=0x08909ae5U + Temp;
#define P124(n) P2(n) + P1(n) + P4(n)
W[80] = P2(80) + P4(80);
sharound(65);
W[81] = P1C(81) + P2(81) + P4(81);
sharound(66);
W[82] = P124(82);
sharound(67);
W[83] = P124(83);
sharound(68);
W[84] = P124(84);
sharound(69);
W[85] = P124(85);
sharound(70);
W[86] = P4(86) + P3C(86) + P2(86) + P1(86);
sharound(71);
W[87] = P4(87) + P3(87) + P2C(87) + P1(87);
sharoundC(72);
W[88] = P1(88) + P4C(88) + P3(88);
sharoundC(73);
W[89] = P3(89) + P1(89);
sharoundC(74);
W[90] = P3(90) + P1(90);
sharoundC(75);
W[91] = P3(91) + P1(91);
sharoundC(76);
W[92] = P3(92) + P1(92);
sharoundC(77);
W[93] = P3(93) + P1(93);
W[94] = P3(94) + P2C(94) + P1(94);
sharoundC(78);
W[95] = P4C(95) + P3(95) + P2(95) + P1(95);
sharoundC(79);
sharound(80);
sharound(81);
sharound(82);
sharound(83);
sharound(84);
sharound(85);
sharound(86);
sharound(87);
sharound(88);
sharound(89);
sharound(90);
sharound(91);
sharound(92);
sharound(93);
sharound(94);
sharound(95);
sharoundW(96);
sharoundW(97);
sharoundW(98);
sharoundW(99);
sharoundW(100);
sharoundW(101);
sharoundW(102);
sharoundW(103);
sharoundW(104);
sharoundW(105);
sharoundW(106);
sharoundW(107);
sharoundW(108);
sharoundW(109);
sharoundW(110);
sharoundW(111);
sharoundW(112);
sharoundW(113);
sharoundW(114);
sharoundW(115);
sharoundW(116);
sharoundW(117);
sharoundW(118);
sharoundW(119);
sharoundW(120);
sharoundW(121);
sharoundW(122);
u v = W[117] + W[108] + Vals[3] + Vals[7] + P2(124) + P1(124) + Ch((Vals[0] + Vals[4]) + (K[59] + W(123)) + s1(123)+ ch(123),Vals[1],Vals[2]);
u g = -(K[60] + H[7]) - S1((Vals[0] + Vals[4]) + (K[59] + W(123)) + s1(123)+ ch(123));
// uint nonce = 0;
#ifdef VECTORS8
uint nonce = (v.s0==g.s0) ? W[3].s0 : 0;
nonce = (v.s1==g.s1) ? W[3].s1 : nonce;
nonce = (v.s2==g.s2) ? W[3].s2 : nonce;
nonce = (v.s3==g.s3) ? W[3].s3 : nonce;
nonce = (v.s4==g.s4) ? W[3].s4 : nonce;
nonce = (v.s5==g.s5) ? W[3].s5 : nonce;
nonce = (v.s6==g.s6) ? W[3].s6 : nonce;
nonce = (v.s7==g.s7) ? W[3].s7 : nonce;
#elif defined VECTORS4
uint nonce = (v.s0==g.s0) ? W[3].s0 : 0;
nonce = (v.s1==g.s1) ? W[3].s1 : nonce;
nonce = (v.s2==g.s2) ? W[3].s2 : nonce;
nonce = (v.s3==g.s3) ? W[3].s3 : nonce;
#elif defined VECTORS
uint nonce = (v.s0==g.s0) ? W[3].s0 : 0;
nonce = (v.s1==g.s1) ? W[3].s1 : nonce;
#else
uint nonce = (v==g) ? W[3] : 0
#endif
if(nonce!=0)
{
//Faster to shift the nonce by 2 due to 4-DWORD addressing and does not add more collisions
output[WORKSIZE] = nonce;
output[get_local_id(0)] = nonce;
}
}
