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RandomX JIT x86: remove unnecessary instructions

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Adopted from https://github.com/tevador/RandomX/pull/201
This commit is contained in:
SChernykh 2021-01-23 22:28:50 +01:00
parent 76fba819fe
commit 78922a0772
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) {
codePos = ADDR(randomx_program_prologue_first_load) - ADDR(randomx_program_prologue);
code[codePos + 2] = 0xc0 + pcfg.readReg0;
code[codePos + 5] = 0xc0 + pcfg.readReg1;
*(uint32_t*)(code + codePos + 10) = RandomX_CurrentConfig.ScratchpadL3Mask64_Calculated;
*(uint32_t*)(code + codePos + 20) = RandomX_CurrentConfig.ScratchpadL3Mask64_Calculated;
*(uint32_t*)(code + codePos + 4) = RandomX_CurrentConfig.ScratchpadL3Mask64_Calculated;
*(uint32_t*)(code + codePos + 14) = RandomX_CurrentConfig.ScratchpadL3Mask64_Calculated;
if (hasAVX) {
uint32_t* p = (uint32_t*)(code + codePos + 67);
uint32_t* p = (uint32_t*)(code + codePos + 61);
*p = (*p & 0xFF000000U) | 0x0077F8C5U;
}