Ecosystem/xmrig
Ecosystem/xmrig
1
0
Fork 0
mirror of https://github.com/xmrig/xmrig.git synced 2024-10-30 21:17:52 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Merge pull request #2058 from SChernykh/dev

Browse source 
RandomX JIT x86: remove unnecessary instructions
This commit is contained in:
xmrig 2021-01-24 13:59:56 +07:00 committed by GitHub
commit 5999dccd57
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
3 changed files with 3 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
src/crypto/randomx/jit_compiler_x86.cpp
View file

@ -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;
}

2
src/crypto/randomx/jit_compiler_x86_static.S
View file

@ -93,8 +93,6 @@ DECL(randomx_program_prologue):
movapd xmm15, xmmword ptr [scaleMask+rip]
DECL(randomx_program_prologue_first_load):
xor rax, r8
xor rax, r8
mov rdx, rax
and eax, RANDOMX_SCRATCHPAD_MASK
ror rdx, 32

2
src/crypto/randomx/jit_compiler_x86_static.asm
View file

@ -81,8 +81,6 @@ randomx_program_prologue PROC
randomx_program_prologue ENDP
randomx_program_prologue_first_load PROC
xor rax, r8
xor rax, r8
mov rdx, rax
and eax, RANDOMX_SCRATCHPAD_MASK
ror rdx, 32