src/tint/lang/core/ir/binary/roundtrip_fuzz.cc

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#include "src/tint/cmd/fuzz/ir/fuzz.h"
#include "src/tint/lang/core/ir/binary/decode.h"
#include "src/tint/lang/core/ir/binary/encode.h"
#include "src/tint/lang/core/ir/disassembler.h"

namespace tint::core::ir::binary {
namespace {

void IRBinaryRoundtripFuzzer(core::ir::Module& module) {
    auto encoded = Encode(module);
    if (encoded != Success) {
        TINT_ICE() << "Encode() failed\n" << encoded.Failure();
        return;
    }

    auto decoded = Decode(encoded->Slice());
    if (decoded != Success) {
        TINT_ICE() << "Decode() failed\n" << decoded.Failure();
        return;
    }

    auto in = Disassemble(module);
    auto out = Disassemble(decoded.Get());
    if (in != out) {
        TINT_ICE() << "Roundtrip produced different disassembly\n"
                   << "-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n"
                   << "-=                     In                      =-\n"
                   << "-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n"
                   << in << "\n"
                   << "-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n"
                   << "-=                     Out                     =-\n"
                   << "-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n"
                   << out << "\n"
                   << "-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n";
        return;
    }
}

}  // namespace
}  // namespace tint::core::ir::binary

TINT_IR_MODULE_FUZZER(tint::core::ir::binary::IRBinaryRoundtripFuzzer);