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Full-width mantissa for group E registers and FDIV_M

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tevador
2019-04-17 16:18:02 +02:00
parent d43c7db416
commit 67046a9f38
11 changed files with 60 additions and 39 deletions
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src/InterpretedVirtualMachine.cpp
+18 -8
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@@ -116,6 +116,16 @@ namespace RandomX {
return scratchpad + addr;
}
template<bool superscalar>
FORCE_INLINE __m128d InterpretedVirtualMachine<superscalar>::maskRegisterExponentMantissa(__m128d x) {
constexpr uint64_t mantissaMask64 = (1ULL << 52) - 1;
const __m128d mantissaMask = _mm_castsi128_pd(_mm_set_epi64x(mantissaMask64, mantissaMask64));
const __m128d exponentMask = _mm_load_pd((const double*)&config.eMask);
x = _mm_and_pd(x, mantissaMask);
x = _mm_or_pd(x, exponentMask);
return x;
}
template<bool superscalar>
FORCE_INLINE void InterpretedVirtualMachine<superscalar>::executeBytecode(int& ic, int_reg_t(&r)[8], __m128d (&f)[4], __m128d (&e)[4], __m128d (&a)[4]) {
auto& ibc = byteCode[ic];
@@ -229,7 +239,7 @@ namespace RandomX {
} break;
case InstructionType::FDIV_M: {
__m128d fsrc = ieee_set_exponent<-240>(load_cvt_i32x2(getScratchpadAddress(ibc)));
__m128d fsrc = maskRegisterExponentMantissa(load_cvt_i32x2(getScratchpadAddress(ibc)));
*ibc.fdst = _mm_div_pd(*ibc.fdst, fsrc);
} break;
@@ -326,7 +336,7 @@ namespace RandomX {
uint32_t spAddr1 = mem.ma;
if (trace) {
std::cout << "execute (reg: r" << readReg0 << ", r" << readReg1 << ", r" << readReg2 << ", r" << readReg3 << ")" << std::endl;
std::cout << "execute (reg: r" << config.readReg0 << ", r" << config.readReg1 << ", r" << config.readReg2 << ", r" << config.readReg3 << ")" << std::endl;
std::cout << "spAddr " << std::hex << std::setw(8) << std::setfill('0') << spAddr1 << " / " << std::setw(8) << std::setfill('0') << spAddr0 << std::endl;
std::cout << "ma/mx " << std::hex << std::setw(8) << std::setfill('0') << mem.ma << std::setw(8) << std::setfill('0') << mem.mx << std::endl;
printState(r, f, e, a);
@@ -334,7 +344,7 @@ namespace RandomX {
for(unsigned ic = 0; ic < RANDOMX_PROGRAM_ITERATIONS; ++ic) {
//std::cout << "Iteration " << iter << std::endl;
uint64_t spMix = r[readReg0] ^ r[readReg1];
uint64_t spMix = r[config.readReg0] ^ r[config.readReg1];
spAddr0 ^= spMix;
spAddr0 &= ScratchpadL3Mask64;
spAddr1 ^= spMix >> 32;
@@ -353,10 +363,10 @@ namespace RandomX {
f[1] = load_cvt_i32x2(scratchpad + spAddr1 + 8);
f[2] = load_cvt_i32x2(scratchpad + spAddr1 + 16);
f[3] = load_cvt_i32x2(scratchpad + spAddr1 + 24);
e[0] = ieee_set_exponent<-240>(load_cvt_i32x2(scratchpad + spAddr1 + 32));
e[1] = ieee_set_exponent<-240>(load_cvt_i32x2(scratchpad + spAddr1 + 40));
e[2] = ieee_set_exponent<-240>(load_cvt_i32x2(scratchpad + spAddr1 + 48));
e[3] = ieee_set_exponent<-240>(load_cvt_i32x2(scratchpad + spAddr1 + 56));
e[0] = maskRegisterExponentMantissa(load_cvt_i32x2(scratchpad + spAddr1 + 32));
e[1] = maskRegisterExponentMantissa(load_cvt_i32x2(scratchpad + spAddr1 + 40));
e[2] = maskRegisterExponentMantissa(load_cvt_i32x2(scratchpad + spAddr1 + 48));
e[3] = maskRegisterExponentMantissa(load_cvt_i32x2(scratchpad + spAddr1 + 56));
if (trace) {
std::cout << "iteration " << std::dec << ic << std::endl;
@@ -368,7 +378,7 @@ namespace RandomX {
executeBytecode(r, f, e, a);
mem.mx ^= r[readReg2] ^ r[readReg3];
mem.mx ^= r[config.readReg2] ^ r[config.readReg3];
mem.mx &= CacheLineAlignMask;
if (superscalar) {
executeSuperscalar(datasetBase + mem.ma / CacheLineSize, r);