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Added support for BMI2 instructions

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This commit is contained in:
SChernykh 2020-01-21 19:44:56 +01:00
parent 8e6f4d4ecb
commit d342968211
8 changed files with 81 additions and 5 deletions
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46
src/crypto/randomx/jit_compiler_x86.cpp
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@ -721,14 +721,31 @@ namespace randomx {
uint8_t* const p = code;
int pos = codePos;
const uint32_t dst = instr.dst;
emit(REX_MOV_RR64, p, pos);
emitByte(0xc0 + instr.dst, p, pos);
emitByte(0xc0 + dst, p, pos);
emit(REX_MUL_R, p, pos);
emitByte(0xe0 + instr.src, p, pos);
emit(REX_MOV_R64R, p, pos);
emitByte(0xc2 + 8 * instr.dst, p, pos);
emitByte(0xc2 + 8 * dst, p, pos);
registerUsage[instr.dst] = pos;
registerUsage[dst] = pos;
codePos = pos;
}
void JitCompilerX86::h_IMULH_R_BMI2(const Instruction& instr) {
uint8_t* const p = code;
int pos = codePos;
const uint32_t src = instr.src;
const uint32_t dst = instr.dst;
*(uint32_t*)(p + pos) = 0xC4D08B49 + (dst << 16);
*(uint32_t*)(p + pos + 4) = 0xC0F6FB42 + (dst << 27) + (src << 24);
pos += 8;
registerUsage[dst] = pos;
codePos = pos;
}
@ -756,6 +773,29 @@ namespace randomx {
codePos = pos;
}
void JitCompilerX86::h_IMULH_M_BMI2(const Instruction& instr) {
uint8_t* const p = code;
int pos = codePos;
const uint64_t src = instr.src;
const uint64_t dst = instr.dst;
if (src != dst) {
genAddressReg<false>(instr, p, pos);
*(uint32_t*)(p + pos) = static_cast<uint32_t>(0xC4D08B49 + (dst << 16));
*(uint64_t*)(p + pos + 4) = 0x0E04F6FB62ULL + (dst << 27);
pos += 9;
}
else {
*(uint64_t*)(p + pos) = 0x86F6FB62C4D08B49ULL + (dst << 16) + (dst << 59);
*(uint32_t*)(p + pos + 8) = instr.getImm32() & ScratchpadL3Mask;
pos += 12;
}
registerUsage[dst] = pos;
codePos = pos;
}
void JitCompilerX86::h_ISMULH_R(const Instruction& instr) {
uint8_t* const p = code;
int pos = codePos;