github-wownero/RandomWOW
1
0
Fork 0
mirror of https://github.com/wownero/RandomWOW.git synced 2026-10-17 15:31:46 +02:00
Code Issues Packages Projects Releases Wiki Activity

Reworked "FNEG" instruction to make ASIC optimizations more difficult

Browse Source
This commit is contained in:
tevador
2019-02-13 00:01:34 +01:00
parent 376c868ca0
commit f76e8c2e20
11 changed files with 29 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/InterpretedVirtualMachine.cpp
+4 -4
View File
@@ -203,8 +203,8 @@ namespace RandomX {
*ibc.fdst = _mm_sub_pd(*ibc.fdst, fsrc);
} break;
case InstructionType::FNEG_R: {
const __m128d signMask = _mm_castsi128_pd(_mm_set1_epi64x(1ULL << 63));
case InstructionType::FSCAL_R: {
const __m128d signMask = _mm_castsi128_pd(_mm_set1_epi64x(0x81F0000000000000));
*ibc.fdst = _mm_xor_pd(*ibc.fdst, signMask);
} break;
@@ -657,10 +657,10 @@ namespace RandomX {
ibc.memMask = ((instr.mod % 4) ? ScratchpadL1Mask : ScratchpadL2Mask);
} break;
CASE_REP(FNEG_R) {
CASE_REP(FSCAL_R) {
auto dst = instr.dst % 4;
ibc.fdst = &f[dst];
ibc.type = InstructionType::FNEG_R;
ibc.type = InstructionType::FSCAL_R;
} break;
CASE_REP(FMUL_R) {