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Enabled IMUL_RCP optimization for light mode mining

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Better fix for #2377
This commit is contained in:
SChernykh 2021-05-17 11:26:40 +02:00
parent 8bf88a4e74
commit 9b1f020a8b
6 changed files with 8 additions and 14 deletions
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2
src/crypto/randomx/asm/program_read_dataset_sshash_fin.inc
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@ -7,4 +7,4 @@
xor r13, qword ptr [rsp+16] xor r13, qword ptr [rsp+16]
xor r14, qword ptr [rsp+8] xor r14, qword ptr [rsp+8]
xor r15, qword ptr [rsp+0] xor r15, qword ptr [rsp+0]
add rsp, 72 add rsp, 200

2
src/crypto/randomx/asm/program_read_dataset_sshash_init.inc
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@ -1,4 +1,4 @@
sub rsp, 72 sub rsp, 200
mov qword ptr [rsp+64], rbx mov qword ptr [rsp+64], rbx
mov qword ptr [rsp+56], r8 mov qword ptr [rsp+56], r8
mov qword ptr [rsp+48], r9 mov qword ptr [rsp+48], r9

10
src/crypto/randomx/jit_compiler_x86.cpp
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@ -320,7 +320,7 @@ namespace randomx {
vm_flags = flags; vm_flags = flags;
generateProgramPrologue(prog, pcfg, false); generateProgramPrologue(prog, pcfg);
uint8_t* p; uint8_t* p;
uint32_t n; uint32_t n;
@ -339,8 +339,8 @@ namespace randomx {
} }
void JitCompilerX86::generateProgramLight(Program& prog, ProgramConfiguration& pcfg, uint32_t datasetOffset) { void JitCompilerX86::generateProgramLight(Program& prog, ProgramConfiguration& pcfg, uint32_t datasetOffset) {
generateProgramPrologue(prog, pcfg, true); generateProgramPrologue(prog, pcfg);
emit(RandomX_CurrentConfig.codeReadDatasetLightSshInitTweaked, readDatasetLightInitSize, code, codePos); emit(codeReadDatasetLightSshInit, readDatasetLightInitSize, code, codePos);
*(uint32_t*)(code + codePos) = 0xc381; *(uint32_t*)(code + codePos) = 0xc381;
codePos += 2; codePos += 2;
emit32(datasetOffset / CacheLineSize, code, codePos); emit32(datasetOffset / CacheLineSize, code, codePos);
@ -415,7 +415,7 @@ namespace randomx {
} }
} }
void JitCompilerX86::generateProgramPrologue(Program& prog, ProgramConfiguration& pcfg, bool light) { void JitCompilerX86::generateProgramPrologue(Program& prog, ProgramConfiguration& pcfg) {
codePos = ADDR(randomx_program_prologue_first_load) - ADDR(randomx_program_prologue); codePos = ADDR(randomx_program_prologue_first_load) - ADDR(randomx_program_prologue);
*(uint32_t*)(code + codePos + 4) = RandomX_CurrentConfig.ScratchpadL3Mask64_Calculated; *(uint32_t*)(code + codePos + 4) = RandomX_CurrentConfig.ScratchpadL3Mask64_Calculated;
*(uint32_t*)(code + codePos + 14) = RandomX_CurrentConfig.ScratchpadL3Mask64_Calculated; *(uint32_t*)(code + codePos + 14) = RandomX_CurrentConfig.ScratchpadL3Mask64_Calculated;
@ -429,7 +429,7 @@ namespace randomx {
# endif # endif
imul_rcp_storage = code + (ADDR(randomx_program_imul_rcp_store) - codePrologue) + 2; imul_rcp_storage = code + (ADDR(randomx_program_imul_rcp_store) - codePrologue) + 2;
imul_rcp_storage_used = light ? 0xFFFFFFFFUL : 0; imul_rcp_storage_used = 0;
memcpy(imul_rcp_storage - 34, &pcfg.eMask, sizeof(pcfg.eMask)); memcpy(imul_rcp_storage - 34, &pcfg.eMask, sizeof(pcfg.eMask));
codePos = codePosFirst; codePos = codePosFirst;

2
src/crypto/randomx/jit_compiler_x86.hpp
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@ -107,7 +107,7 @@ namespace randomx {
uint8_t* imul_rcp_storage = nullptr; uint8_t* imul_rcp_storage = nullptr;
uint32_t imul_rcp_storage_used = 0; uint32_t imul_rcp_storage_used = 0;
void generateProgramPrologue(Program&, ProgramConfiguration&, bool light); void generateProgramPrologue(Program&, ProgramConfiguration&);
void generateProgramEpilogue(Program&, ProgramConfiguration&); void generateProgramEpilogue(Program&, ProgramConfiguration&);
template<bool rax> template<bool rax>
static void genAddressReg(const Instruction&, const uint32_t src, uint8_t* code, uint32_t& codePos); static void genAddressReg(const Instruction&, const uint32_t src, uint8_t* code, uint32_t& codePos);

5
src/crypto/randomx/randomx.cpp
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@ -177,11 +177,6 @@ RandomX_ConfigurationBase::RandomX_ConfigurationBase()
memcpy(codeReadDatasetRyzenTweaked, a, b - a); memcpy(codeReadDatasetRyzenTweaked, a, b - a);
codeReadDatasetRyzenTweakedSize = b - a; codeReadDatasetRyzenTweakedSize = b - a;
} }
{
const uint8_t* a = addr(randomx_program_read_dataset_sshash_init);
const uint8_t* b = addr(randomx_program_read_dataset_sshash_fin);
memcpy(codeReadDatasetLightSshInitTweaked, a, b - a);
}
{ {
const uint8_t* a = addr(randomx_prefetch_scratchpad); const uint8_t* a = addr(randomx_prefetch_scratchpad);
const uint8_t* b = addr(randomx_prefetch_scratchpad_end); const uint8_t* b = addr(randomx_prefetch_scratchpad_end);

1
src/crypto/randomx/randomx.h
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@ -129,7 +129,6 @@ struct RandomX_ConfigurationBase
uint32_t codeReadDatasetTweakedSize; uint32_t codeReadDatasetTweakedSize;
uint8_t codeReadDatasetRyzenTweaked[72]; uint8_t codeReadDatasetRyzenTweaked[72];
uint32_t codeReadDatasetRyzenTweakedSize; uint32_t codeReadDatasetRyzenTweakedSize;
uint8_t codeReadDatasetLightSshInitTweaked[68];
uint8_t codePrefetchScratchpadTweaked[32]; uint8_t codePrefetchScratchpadTweaked[32];
uint32_t AddressMask_Calculated[4]; uint32_t AddressMask_Calculated[4];