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Merge pull request #1080 from psychocrypt/topic-reduceRegisterUsage

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AMD: reduce register usage
This commit is contained in:
fireice-uk
2018-02-19 13:32:00 +00:00
committed by GitHub
parent 73fb861bac b0d03b3302
commit 84febdf63e
1 changed files with 4 additions and 4 deletions
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xmrstak/backend/amd/amd_gpu/opencl/cryptonight.cl
+4 -4
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@@ -399,7 +399,7 @@ static const __constant uchar rcon[8] = { 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x
void AESExpandKey256(uint *keybuf)
{
//#pragma unroll 4
for(uint c = 8, i = 1; c < 60; ++c)
for(uint c = 8, i = 1; c < 40; ++c)
{
// For 256-bit keys, an sbox permutation is done every other 4th uint generated, AND every 8th
uint t = ((!(c & 7)) || ((c & 7) == 4)) ? SubWord(keybuf[c - 1]) : keybuf[c - 1];
@@ -421,7 +421,7 @@ __attribute__((reqd_work_group_size(WORKSIZE, 8, 1)))
__kernel void cn0(__global ulong *input, __global uint4 *Scratchpad, __global ulong *states, ulong Threads)
{
ulong State[25];
uint ExpandedKey1[256];
uint ExpandedKey1[40];
__local uint AES0[256], AES1[256], AES2[256], AES3[256];
uint4 text;
@@ -578,7 +578,7 @@ __attribute__((reqd_work_group_size(WORKSIZE, 8, 1)))
__kernel void cn2(__global uint4 *Scratchpad, __global ulong *states, __global uint *Branch0, __global uint *Branch1, __global uint *Branch2, __global uint *Branch3, ulong Threads)
{
__local uint AES0[256], AES1[256], AES2[256], AES3[256];
uint ExpandedKey2[256];
uint ExpandedKey2[40];
ulong State[25];
uint4 text;
@@ -632,7 +632,7 @@ __kernel void cn2(__global uint4 *Scratchpad, __global ulong *states, __global u
{
text ^= Scratchpad[IDX((i << 3) + get_local_id(1))];
#pragma unroll
#pragma unroll 10
for(int j = 0; j < 10; ++j)
text = AES_Round(AES0, AES1, AES2, AES3, text, ((uint4 *)ExpandedKey2)[j]);
}