normalize.h

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#pragma once
 
#include "mim/def.h"
 
namespace mim {
 
/// Utility class when folding constants in normalizers.
class Res {
public:
    Res()
        : data_{} {}
    template<class T>
    Res(T val)
        : data_(mim::bitcast<u64>(val)) {}
 
    constexpr const u64& operator*() const& { return *data_; }
    constexpr u64& operator*() & { return *data_; }
    explicit operator bool() const { return data_.has_value(); }
 
private:
    std::optional<u64> data_;
};
 
/// Swap Lit to left - or smaller Def::gid, if no lit present.
inline void commute(const Def*& a, const Def*& b) {
    if (b->isa<Lit>() || (a->gid() > b->gid() && !a->isa<Lit>())) std::swap(a, b);
}
 
} // namespace mim