bench: Add evmmax/ModArith benchmarks for uint256

test/internal_benchmarks/CMakeLists.txt

@@ -4,8 +4,9 @@
 
 add_executable(
     evmone-bench-internal
+    evmmax_bench.cpp
     find_jumpdest_bench.cpp
     memory_allocation.cpp
 )
 
-target_link_libraries(evmone-bench-internal PRIVATE benchmark::benchmark)
+target_link_libraries(evmone-bench-internal PRIVATE evmone::evmmax benchmark::benchmark)

test/internal_benchmarks/evmmax_bench.cpp

@@ -0,0 +1,63 @@
+// evmone: Fast Ethereum Virtual Machine implementation
+// Copyright 2023 The evmone Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+#include <benchmark/benchmark.h>
+#include <evmmax/evmmax.hpp>
+
+using namespace intx;
+
+namespace
+{
+constexpr auto bn254 = 0x30644e72e131a029b85045b68181585d97816a916871ca8d3c208c16d87cfd47_u256;
+constexpr auto secp256k1 = 0xfffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2f_u256;
+
+template <typename UintT, const UintT& Mod>
+void evmmax_add(benchmark::State& state)
+{
+    const evmmax::ModArith<UintT> m{Mod};
+    auto a = Mod / 2;
+    auto b = Mod / 3;
+
+    while (state.KeepRunningBatch(2))
+    {
+        a = m.add(a, b);
+        b = m.add(b, a);
+    }
+}
+
+template <typename UintT, const UintT& Mod>
+void evmmax_sub(benchmark::State& state)
+{
+    const evmmax::ModArith<UintT> m{Mod};
+    auto a = Mod / 2;
+    auto b = Mod / 3;
+
+    while (state.KeepRunningBatch(2))
+    {
+        a = m.sub(a, b);
+        b = m.sub(b, a);
+    }
+}
+
+template <typename UintT, const UintT& Mod>
+void evmmax_mul(benchmark::State& state)
+{
+    const evmmax::ModArith<UintT> m{Mod};
+    auto a = m.to_mont(Mod / 2);
+    auto b = m.to_mont(Mod / 3);
+
+    while (state.KeepRunningBatch(2))
+    {
+        a = m.mul(a, b);
+        b = m.mul(b, a);
+    }
+}
+}  // namespace
+
+BENCHMARK_TEMPLATE(evmmax_add, uint256, bn254);
+BENCHMARK_TEMPLATE(evmmax_add, uint256, secp256k1);
+BENCHMARK_TEMPLATE(evmmax_sub, uint256, bn254);
+BENCHMARK_TEMPLATE(evmmax_sub, uint256, secp256k1);
+BENCHMARK_TEMPLATE(evmmax_mul, uint256, bn254);
+BENCHMARK_TEMPLATE(evmmax_mul, uint256, secp256k1);