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https://github.com/verilator/verilator.git
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Geza Lore
a6f26b85b3
Large scale refactoring to simplify some of the more obtuse internals of DFG. Remove multiple redundant internal APIs, simplify representation of variables, fix potential unsoundness in circular decomposition. No functional change intended.
61 lines
1.3 KiB
C++
61 lines
1.3 KiB
C++
//
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// DESCRIPTION: Verilator: DFG optimizer equivalence testing
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//
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// This file ONLY is placed under the Creative Commons Public Domain, for
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// any use, without warranty, 2022 by Geza Lore.
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// SPDX-License-Identifier: CC0-1.0
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//
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#include <verilated.h>
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#include <verilated_cov.h>
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#include <Vopt.h>
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#include <Vref.h>
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#include <iostream>
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void rngUpdate(uint64_t& x) {
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x ^= x << 13;
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x ^= x >> 7;
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x ^= x << 17;
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}
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int main(int, char**) {
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// Create contexts
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VerilatedContext ctx;
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// Create models
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Vref ref{&ctx};
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Vopt opt{&ctx};
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uint64_t rand_a = 0x5aef0c8dd70a4497;
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uint64_t rand_b = 0xf0c0a8dd75ae4497;
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uint64_t srand_a = 0x00fa8dcc7ae4957;
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uint64_t srand_b = 0x0fa8dc7ae3c9574;
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for (size_t n = 0; n < 200000; ++n) {
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// Update rngs
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rngUpdate(rand_a);
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rngUpdate(rand_b);
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rngUpdate(srand_a);
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rngUpdate(srand_b);
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// Assign inputs
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ref.rand_a = opt.rand_a = rand_a;
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ref.rand_b = opt.rand_b = rand_b;
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ref.srand_a = opt.srand_a = srand_a;
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ref.srand_b = opt.srand_b = srand_b;
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// Evaluate both models
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ref.eval();
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opt.eval();
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// Check equivalence
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#include "checks.h"
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// increment time
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ctx.timeInc(1);
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}
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std::cout << "*-* All Finished *-*\n";
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}
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