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Merge pull request #2058 from SChernykh/dev

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RandomX JIT x86: remove unnecessary instructions
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xmrig 2021-01-24 13:59:56 +07:00 committed by GitHub
commit 5999dccd57
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3 changed files with 3 additions and 9 deletions
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8
src/crypto/randomx/jit_compiler_x86.cpp
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@ -417,12 +417,10 @@ namespace randomx {
void JitCompilerX86::generateProgramPrologue(Program& prog, ProgramConfiguration& pcfg) { 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);
code[codePos + 2] = 0xc0 + pcfg.readReg0; *(uint32_t*)(code + codePos + 4) = RandomX_CurrentConfig.ScratchpadL3Mask64_Calculated;
code[codePos + 5] = 0xc0 + pcfg.readReg1; *(uint32_t*)(code + codePos + 14) = RandomX_CurrentConfig.ScratchpadL3Mask64_Calculated;
*(uint32_t*)(code + codePos + 10) = RandomX_CurrentConfig.ScratchpadL3Mask64_Calculated;
*(uint32_t*)(code + codePos + 20) = RandomX_CurrentConfig.ScratchpadL3Mask64_Calculated;
if (hasAVX) { if (hasAVX) {
uint32_t* p = (uint32_t*)(code + codePos + 67); uint32_t* p = (uint32_t*)(code + codePos + 61);
*p = (*p & 0xFF000000U) | 0x0077F8C5U; *p = (*p & 0xFF000000U) | 0x0077F8C5U;
} }

2
src/crypto/randomx/jit_compiler_x86_static.S
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@ -93,8 +93,6 @@ DECL(randomx_program_prologue):
movapd xmm15, xmmword ptr [scaleMask+rip] movapd xmm15, xmmword ptr [scaleMask+rip]
DECL(randomx_program_prologue_first_load): DECL(randomx_program_prologue_first_load):
xor rax, r8
xor rax, r8
mov rdx, rax mov rdx, rax
and eax, RANDOMX_SCRATCHPAD_MASK and eax, RANDOMX_SCRATCHPAD_MASK
ror rdx, 32 ror rdx, 32

2
src/crypto/randomx/jit_compiler_x86_static.asm
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@ -81,8 +81,6 @@ randomx_program_prologue PROC
randomx_program_prologue ENDP randomx_program_prologue ENDP
randomx_program_prologue_first_load PROC randomx_program_prologue_first_load PROC
xor rax, r8
xor rax, r8
mov rdx, rax mov rdx, rax
and eax, RANDOMX_SCRATCHPAD_MASK and eax, RANDOMX_SCRATCHPAD_MASK
ror rdx, 32 ror rdx, 32