src/tint/cmd/bench/spirv/writer_bench.cc

// Copyright 2022 The Dawn & Tint Authors
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#include <string>

#include "src/tint/cmd/bench/bench.h"
#include "src/tint/lang/spirv/writer/writer.h"
#include "src/tint/lang/wgsl/ast/identifier.h"
#include "src/tint/lang/wgsl/ast/module.h"
#include "src/tint/lang/wgsl/reader/reader.h"

#if TINT_BUILD_IS_MSVC
#if _MSC_VER > 1930 && _MSC_VER < 1939
#define BUGGY_COMPILER  // MSVC can ICE
#endif
#endif

#ifndef BUGGY_COMPILER

namespace tint::spirv::writer {
namespace {

void GenerateSPIRV(benchmark::State& state, std::string input_name) {
    auto res = bench::GetWgslProgram(input_name);
    TINT_ASSERT(res == Success) << res.Failure().reason;

    // Get the list of entry point names.
    std::vector<std::string> names;
    for (auto func : res->program.AST().Functions()) {
        if (func->IsEntryPoint()) {
            names.push_back(func->name->symbol.Name());
        }
    }

    for (auto _ : state) {
        for (auto& name : names) {
            // Convert the AST program to an IR module.
            auto ir = tint::wgsl::reader::ProgramToLoweredIR(res->program);
            TINT_ASSERT(ir == Success) << ir.Failure().reason;

            spirv::writer::Options options{
                .entry_point_name = name,
            };
            auto gen_res = Generate(ir.Get(), options);
            TINT_ASSERT(gen_res == Success) << gen_res.Failure().reason;
        }
    }
}

TINT_BENCHMARK_PROGRAMS(GenerateSPIRV);

}  // namespace
}  // namespace tint::spirv::writer

#endif