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pass_manager.cpp 3.84 KB
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#include <migraphx/program.hpp>
#include <migraphx/pass_manager.hpp>
#include <migraphx/stringutils.hpp>
#include <migraphx/instruction.hpp>
#include <migraphx/target.hpp>
#include <migraphx/env.hpp>
#include <migraphx/ranges.hpp>
#include <migraphx/time.hpp>
#include <migraphx/iterator_for.hpp>
#include <iostream>
#include <sstream>
#include <algorithm>
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#include <unordered_map>
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#include <utility>

namespace migraphx {
inline namespace MIGRAPHX_INLINE_NS {

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MIGRAPHX_DECLARE_ENV_VAR(MIGRAPHX_TRACE_PASSES);

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void validate_pass(module& mod, const pass& p, tracer trace)
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{
    (void)mod;
    (void)p;
#ifndef NDEBUG
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    trace("Validate...");
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    auto invalid = mod.validate();
    if(invalid != mod.end())
    {
        auto index = std::distance(mod.begin(), invalid);
        MIGRAPHX_THROW(p.name() + " pass produces invalid program at instruction " +
                       std::to_string(index) + ": " + invalid->name());
    }
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    trace();
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#endif
}
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void run_pass(program& prog, const pass& p, tracer& trace)
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{
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    auto t_start = std::chrono::high_resolution_clock::now();
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    p.apply(prog);
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    auto t_end = std::chrono::high_resolution_clock::now();
    double elapsed_time_ms = std::chrono::duration<double, std::milli>(t_end-t_start).count();
    trace(p.name(), "Pass: ", p.name(), "\n", prog, "Elapsed Wall Time (ms): ", elapsed_time_ms, "\n");
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}

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struct module_pm : module_pass_manager
{
    module* mod;
    program* prog;
    tracer* t;

    module_pm(module* pmod = nullptr, program* pprog = nullptr, tracer* pt = nullptr)
        : mod(pmod), prog(pprog), t(pt)
    {
    }

    template <class... Ts>
    void trace(Ts&&... xs) const
    {
        assert(t);
        (*t)(xs...);
    }

    virtual module& get_module() override
    {
        assert(mod);
        return *mod;
    }
    virtual module* create_module(const std::string& name) override
    {
        assert(prog);
        return prog->create_module(name);
    }
    virtual void run_pass(const pass& p) override
    {
        assert(mod);
        assert(mod->validate() == mod->end());
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        auto t_start = std::chrono::high_resolution_clock::now();
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        p.apply(*this);
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        auto t_end = std::chrono::high_resolution_clock::now();
        double elapsed_time_ms = std::chrono::duration<double, std::milli>(t_end-t_start).count();
        trace(p.name(), "Module: ", mod->name(), ", Pass: ", p.name(), "\n", *mod, "Elapsed Wall Time (ms): ", elapsed_time_ms);
        validate_pass(*mod, p, *t);
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    }
};

module& get_module(module_pass_manager& mpm) { return mpm.get_module(); }

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void run_passes(module& mod, const std::vector<pass>& passes, tracer trace)
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{
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    if(enabled(MIGRAPHX_TRACE_PASSES{}) and not trace.enabled())
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        trace = tracer{std::cout};
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    for(const auto& p : passes)
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    {
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        module_pm{&mod, nullptr, &trace}.run_pass(p);
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    }
}
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void run_passes(program& prog, const std::vector<pass>& passes, tracer trace)
{
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    if(enabled(MIGRAPHX_TRACE_PASSES{}) and not trace.enabled())
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        trace = tracer{std::cout};
    
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    std::unordered_map<std::string, tracer> module_tracer_map;
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    for(const auto& p : passes)
    {
        auto mods = prog.get_modules();
        for(const auto& mod : reverse(mods))
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        {
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            // Set tracer for module passes, if tracer is set to output to file stream then set name of the dump directory.
            // For file dumps, tracer object internally sets the counter for the individual passes' file dumps. 
            if(module_tracer_map.find(mod->name()) == module_tracer_map.end()) {
                module_tracer_map[mod->name()] = trace.fs_enabled() ? tracer{trace.dump_dir + "/" + mod->name()}  : trace;
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            }
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            if(mod->bypass())
                continue;
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            module_pm{mod, &prog, &module_tracer_map[mod->name()]}.run_pass(p);
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        }
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        run_pass(prog, p, trace);
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    }
}

} // namespace MIGRAPHX_INLINE_NS
} // namespace migraphx