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

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#include <string>

#include "src/tint/api/helpers/generate_bindings.h"
#include "src/tint/cmd/bench/bench.h"
#include "src/tint/lang/msl/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"
#include "src/tint/lang/wgsl/sem/variable.h"

namespace tint::msl::writer {
namespace {

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

    std::vector<std::string> names;
    for (auto* func : res->program.AST().Functions()) {
        if (func->IsEntryPoint()) {
            names.push_back(func->name->symbol.Name());
        }
    }

    tint::msl::writer::Options gen_options = {};
    // TODO(crbug.com/366291600): Replace ubo with immediate block for bench
    gen_options.array_length_from_constants.ubo_binding = 30;
    gen_options.array_length_from_constants.bindpoint_to_size_index.emplace(
        tint::BindingPoint{0, 0}, 0);
    gen_options.array_length_from_constants.bindpoint_to_size_index.emplace(
        tint::BindingPoint{0, 1}, 1);
    gen_options.array_length_from_constants.bindpoint_to_size_index.emplace(
        tint::BindingPoint{0, 2}, 2);
    gen_options.array_length_from_constants.bindpoint_to_size_index.emplace(
        tint::BindingPoint{0, 3}, 3);
    gen_options.array_length_from_constants.bindpoint_to_size_index.emplace(
        tint::BindingPoint{0, 4}, 4);
    gen_options.array_length_from_constants.bindpoint_to_size_index.emplace(
        tint::BindingPoint{0, 5}, 5);
    gen_options.array_length_from_constants.bindpoint_to_size_index.emplace(
        tint::BindingPoint{0, 6}, 6);
    gen_options.array_length_from_constants.bindpoint_to_size_index.emplace(
        tint::BindingPoint{0, 7}, 7);

    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;

            gen_options.bindings = tint::GenerateBindings(ir.Get(), name, true, true);
            gen_options.entry_point_name = name;

            auto gen_res = Generate(ir.Get(), gen_options);
            TINT_ASSERT(gen_res == Success) << gen_res.Failure().reason;
        }
    }
}

TINT_BENCHMARK_PROGRAMS(GenerateMSL);

}  // namespace
}  // namespace tint::msl::writer