msvc solution

src/tests/superscalar-avalanche.cpp

@@ -0,0 +1,68 @@
+/*
+Copyright (c) 2019 tevador
+
+This file is part of RandomX.
+
+RandomX is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+RandomX is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with RandomX.  If not, see<http://www.gnu.org/licenses/>.
+*/
+
+#include <iostream>
+#include <cstdint>
+#include <vector>
+#include "../LightProgramGenerator.hpp"
+#include "../InterpretedVirtualMachine.hpp"
+#include "../intrinPortable.h"
+
+const uint8_t seed[32] = { 191, 182, 222, 175, 249, 89, 134, 104, 241, 68, 191, 62, 162, 166, 61, 64, 123, 191, 227, 193, 118, 60, 188, 53, 223, 133, 175, 24, 123, 230, 55, 74 };
+
+int main() {
+
+	int insensitiveProgCount[64] = { 0 };
+	std::vector<uint64_t> dummy;
+	for (int bit = 0; bit < 64; ++bit) {
+		for (int i = 0; i < 10000; ++i) {
+			uint64_t ra[8] = {
+				6364136223846793005ULL,
+				9298410992540426048ULL,
+				12065312585734608966ULL,
+				9306329213124610396ULL,
+				5281919268842080866ULL,
+				10536153434571861004ULL,
+				3398623926847679864ULL,
+				9549104520008361294ULL,
+			};
+			uint64_t rb[8];
+			memcpy(rb, ra, sizeof rb);
+			rb[0] ^= (1ULL << bit);
+			RandomX::LightProgram p;
+			RandomX::Blake2Generator gen(seed, i);
+			RandomX::generateLightProg2(p, gen);
+			RandomX::InterpretedVirtualMachine<false>::executeSuperscalar(ra, p, dummy);
+			RandomX::InterpretedVirtualMachine<false>::executeSuperscalar(rb, p, dummy);
+			uint64_t diff = 0;
+			for (int j = 0; j < 8; ++j) {
+				diff += __popcnt64(ra[j] ^ rb[j]);
+			}
+			if (diff < 192 || diff > 320) {
+				std::cout << "Seed: " << i << " diff = " << diff << std::endl;
+				insensitiveProgCount[bit]++;
+			}
+		}
+	}
+	for (int bit = 0; bit < 64; ++bit) {
+		std::cout << bit << " " << insensitiveProgCount[bit] << std::endl;
+	}
+
+	return 0;
+}

src/tests/superscalar-init.cpp

@@ -0,0 +1,78 @@
+/*
+Copyright (c) 2019 tevador
+
+This file is part of RandomX.
+
+RandomX is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+RandomX is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with RandomX.  If not, see<http://www.gnu.org/licenses/>.
+*/
+
+#include <iostream>
+#include <cstdint>
+#include <vector>
+#include <unordered_set>
+#include "../LightProgramGenerator.hpp"
+#include "../InterpretedVirtualMachine.hpp"
+#include "../intrinPortable.h"
+#include "../configuration.h"
+
+const uint8_t seed[32] = { 191, 182, 222, 175, 249, 89, 134, 104, 241, 68, 191, 62, 162, 166, 61, 64, 123, 191, 227, 193, 118, 60, 188, 53, 223, 133, 175, 24, 123, 230, 55, 74 };
+
+int main() {
+	std::cout << "THIS PROGRAM REQUIRES MORE THAN 10 GB OF RAM TO COMPLETE" << std::endl;
+	std::vector<uint64_t> dummy;
+	constexpr uint64_t superscalarMul0 = 6364136223846793005ULL;
+	constexpr uint64_t superscalarAdd1 = 9298410992540426748ULL; //9298410992540426048ULL
+	constexpr uint64_t superscalarAdd2 = 12065312585734608966ULL;
+	constexpr uint64_t superscalarAdd3 = 9306329213124610396ULL;
+	constexpr uint64_t superscalarAdd4 = 5281919268842080866ULL;
+	constexpr uint64_t superscalarAdd5 = 10536153434571861004ULL;
+	constexpr uint64_t superscalarAdd6 = 3398623926847679864ULL;
+	constexpr uint64_t superscalarAdd7 = 9549104520008361294ULL;
+	constexpr uint32_t totalBlocks = RANDOMX_DATASET_SIZE / RandomX::CacheLineSize;
+	std::unordered_set<uint64_t> registerValues;
+	registerValues.reserve(totalBlocks);
+	registerValues.rehash(totalBlocks);
+	int collisionCount[9] = { 0 };
+	for (uint32_t blockNumber = 0; blockNumber < totalBlocks; ++blockNumber) {
+		uint64_t rl[8];
+		rl[0] = (blockNumber + 1) * superscalarMul0;
+		rl[1] = rl[0] ^ superscalarAdd1;
+		rl[2] = rl[0] ^ superscalarAdd2;
+		rl[3] = rl[0] ^ superscalarAdd3;
+		rl[4] = rl[0] ^ superscalarAdd4;
+		rl[5] = rl[0] ^ superscalarAdd5;
+		rl[6] = rl[0] ^ superscalarAdd6;
+		rl[7] = rl[0] ^ superscalarAdd7;
+		int blockCollisions = 0;
+		for (int i = 0; i < 8; ++i) {
+			uint64_t reducedValue = rl[i] & 0x3FFFFFFFFFFFF8; //bits 3-53 only
+			if (registerValues.find(reducedValue) != registerValues.end()) {
+				blockCollisions++;
+				std::cout << "Block " << blockNumber << ": collision of register r" << i << std::endl;
+			}
+			else {
+				registerValues.insert(reducedValue);
+			}
+		}
+		collisionCount[blockCollisions]++;
+		if ((blockNumber % (320 * 1024)) == 0)
+			std::cout << "Block " << blockNumber << " processed" << std::endl;
+	}
+
+	for (int i = 0; i < 9; ++i) {
+		std::cout << i << " register(s) collide in " << collisionCount[i] << " blocks" << std::endl;
+	}
+
+	return 0;
+}