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https://github.com/YosysHQ/yosys
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sigspec: hell
This commit is contained in:
Emil J. Tywoniak
parent
6e3bf76ea4
commit
5beba35600
1 changed files with 157 additions and 55 deletions
212
kernel/rtlil.h
212
kernel/rtlil.h
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@ -68,6 +68,7 @@ namespace RTLIL
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struct SigSpecIterator;
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struct SigSpecConstIterator;
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struct SigSpec;
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struct HellVector;
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struct CaseRule;
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struct SwitchRule;
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struct MemWriteAction;
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@ -838,16 +839,142 @@ struct RTLIL::SigSpecConstIterator
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inline void operator++() { index++; }
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};
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// Evil
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struct RTLIL::HellVector
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{
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private:
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std::vector<char> backing;
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void dump() {
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std::cout << "Dumping, size is " << backing.size() << std::endl;
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int i = 0;
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for (char& c : backing) {
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std::cout << "backing[" << +i << "] = " << +c << std::endl;
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i++;
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}
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}
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public:
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template<typename T> class iterator {
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private:
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HellVector *const parent;
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int position;
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public:
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typedef std::bidirectional_iterator_tag iterator_category;
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typedef T value_type;
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typedef ptrdiff_t difference_type;
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typedef T* pointer;
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typedef T& reference;
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iterator (HellVector* parent, int position) : parent(parent), position(position) {}
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T& operator* () {
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char* as_char = &parent->backing[position * sizeof(T)];
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return *(T*)as_char;
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}
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iterator<T>& operator++() {
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position += 1;
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return *this;
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}
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iterator<T>& operator--() {
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position -= 1;
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return *this;
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}
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bool operator==(const iterator &other) const {
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return position == other.position;
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}
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bool operator!=(const iterator& other) const {
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return !operator==(other);
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}
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};
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template<typename T> class const_iterator {
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private:
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const HellVector *const parent;
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int position;
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public:
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typedef std::input_iterator_tag iterator_category;
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typedef T value_type;
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typedef ptrdiff_t difference_type;
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typedef T* pointer;
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typedef T& reference;
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const_iterator (const HellVector* parent, int position) : parent(parent), position(position) {}
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const T& operator* () {
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const char* as_char = &parent->backing[position * sizeof(T)];
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return *(const T*)as_char;
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}
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const_iterator<T>& operator++() {
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position += 1;
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return *this;
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}
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const_iterator<T>& operator-() {
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position -= 1;
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return *this;
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}
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bool operator==(const const_iterator &other) const {
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return position == other.position;
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}
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bool operator!=(const const_iterator& other) const {
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return !operator==(other);
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}
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};
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template<typename T> class mock_vector {
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const HellVector *const parent;
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public:
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mock_vector(HellVector* parent) {parent(parent)}
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void clear() {
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backing.clear();
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}
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bool empty() const {
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return backing.empty();
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}
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template<typename T> iterator<T> begin() {
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return iterator<T>(this, 0);
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}
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template<typename T> iterator<T> end() {
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return iterator<T>(this, backing.size() / sizeof(T));
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}
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template<typename T> const_iterator<T> begin() const {
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return const_iterator<T>(this, 0);
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}
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template<typename T> const_iterator<T> end() const {
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return const_iterator<T>(this, backing.size() / sizeof(T));
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}
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template<typename T> T& at(int i) {
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char* as_char = &parent->backing[i * sizeof(T)];
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return *(T*)as_char;
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}
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template<typename T> const T& at(int i) {
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const char* as_char = &parent->backing[i * sizeof(T)];
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return *(const T*)as_char;
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}
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};
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bool empty() const {
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return backing.empty();
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}
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template<typename T> size_t size() const {
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return backing.size() / sizeof(T);
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}
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template<typename T> void push_back(T& thing) {
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std::cout << "Pushing " << std::dec << sizeof(T) << " bytes" << std::endl;
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auto size = backing.size();
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backing.resize(size + sizeof(T));
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memcpy((void*) &backing[size], (void*) &thing, sizeof(T));
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// dump();
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}
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SigBit &bit(size_t position) const {
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void* eee = (void*)(&backing[position * sizeof(SigBit)]);
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return *(SigBit*) eee;
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}
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SigChunk &chunk(size_t position) const {
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void* eee = (void*)(&backing[position * sizeof(SigChunk)]);
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return *(SigChunk*) eee;
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}
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};
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struct RTLIL::SigSpec
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{
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private:
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int width_;
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bool packed_;
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unsigned long hash_;
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union {
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std::vector<RTLIL::SigChunk> chunks_; // LSB at index 0
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std::vector<RTLIL::SigBit> bits_; // LSB at index 0
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};
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HellVector hell_;
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void pack() const;
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void unpack() const;
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@ -860,7 +987,7 @@ private:
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}
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inline void inline_unpack() const {
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if (packed_ && !chunks_.empty())
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if (packed_ && !hell_.empty())
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unpack();
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}
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@ -869,42 +996,14 @@ private:
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friend struct RTLIL::Module;
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public:
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SigSpec() : width_(0), packed_(true), hash_(0), chunks_() {}
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~SigSpec() { if (packed_) chunks_.~vector(); else bits_.~vector(); }
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SigSpec() : width_(0), packed_(true), hash_(0), hell_(), bits_(&hell_), chunks_(&hell_) {}
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// ~SigSpec() { if (packed_) chunks_.~vector(); else bits_.~vector(); }
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SigSpec(std::initializer_list<RTLIL::SigSpec> parts);
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SigSpec(const Yosys::RTLIL::SigSpec &other)
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{
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packed_ = other.packed_;
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width_ = other.width_;
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hash_ = other.hash_;
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if (packed_) {
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(void)new (&this->chunks_) std::vector<SigChunk>();
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chunks_ = other.chunks_;
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} else {
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(void)new (&this->bits_) std::vector<SigBit>();
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bits_ = other.bits_;
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}
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check();
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}
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SigSpec(const Yosys::RTLIL::SigSpec &other) : width_(other.width_), packed_(other.packed_), hash_(other.hash_), hell_(other.hell_), bits_(&hell_), chunks_(&hell_) { check(); }
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SigSpec& operator=(const Yosys::RTLIL::SigSpec & other)
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{
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if (packed_ != other.packed_) {
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if (packed_) {
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chunks_.clear();
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switch_to_unpacked();
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bits_ = other.bits_;
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} else {
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bits_.clear();
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switch_to_packed();
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chunks_ = other.chunks_;
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}
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} else {
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if (packed_)
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chunks_ = other.chunks_;
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else
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bits_ = other.bits_;
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}
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hell_ = other.hell_;
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packed_ = other.packed_;
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width_ = other.width_;
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hash_ = other.hash_;
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check();
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@ -932,20 +1031,23 @@ public:
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return hash_;
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}
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inline const std::vector<RTLIL::SigChunk> &chunks() const { pack(); return chunks_; }
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inline const std::vector<RTLIL::SigBit> &bits() const { inline_unpack(); return bits_; }
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HellVector::mock_vector<SigBit> bits_;
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HellVector::mock_vector<SigChunk> chunks_;
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inline int size() const { return width_; }
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inline bool empty() const { return width_ == 0; }
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inline RTLIL::SigBit &operator[](int index) { inline_unpack(); return bits_.at(index); }
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inline const RTLIL::SigBit &operator[](int index) const { inline_unpack(); return bits_.at(index); }
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inline const RTLIL::SigBit &operator[](int index) const { inline_unpack(); return chunks_.at(index); }
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inline RTLIL::SigSpecIterator begin() { RTLIL::SigSpecIterator it; it.sig_p = this; it.index = 0; return it; }
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inline RTLIL::SigSpecIterator end() { RTLIL::SigSpecIterator it; it.sig_p = this; it.index = width_; return it; }
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inline auto begin() { HellVector::iterator<SigBit> it(&hell_, 0); return it; }
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inline auto end() { HellVector::iterator<SigBit> it(&hell_, hell_.size<SigBit>()); return it; }
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inline auto begin() const { HellVector::const_iterator<SigBit> it(&hell_, 0); return it; }
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inline auto end() const { HellVector::const_iterator<SigBit> it(&hell_, hell_.size<SigBit>()); return it; }
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// inline auto end() { RTLIL::SigSpecIterator it; it.sig_p = this; it.index = width_; return it; }
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inline RTLIL::SigSpecConstIterator begin() const { RTLIL::SigSpecConstIterator it; it.sig_p = this; it.index = 0; return it; }
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inline RTLIL::SigSpecConstIterator end() const { RTLIL::SigSpecConstIterator it; it.sig_p = this; it.index = width_; return it; }
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// inline RTLIL::SigSpecConstIterator begin() const { RTLIL::SigSpecConstIterator it; it.sig_p = this; it.index = 0; return it; }
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// inline RTLIL::SigSpecConstIterator end() const { RTLIL::SigSpecConstIterator it; it.sig_p = this; it.index = width_; return it; }
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void sort();
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void sort_and_unify();
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@ -1034,8 +1136,8 @@ public:
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static bool parse_sel(RTLIL::SigSpec &sig, RTLIL::Design *design, RTLIL::Module *module, std::string str);
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static bool parse_rhs(const RTLIL::SigSpec &lhs, RTLIL::SigSpec &sig, RTLIL::Module *module, std::string str);
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operator std::vector<RTLIL::SigChunk>() const { return chunks(); }
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operator std::vector<RTLIL::SigBit>() const { return bits(); }
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// operator std::vector<RTLIL::SigChunk>() const { return chunks(); }
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// operator std::vector<RTLIL::SigBit>() const { return bits(); }
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const RTLIL::SigBit &at(int offset, const RTLIL::SigBit &defval) { return offset < width_ ? (*this)[offset] : defval; }
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unsigned int hash() const { if (!hash_) updhash(); return hash_; };
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@ -1752,17 +1854,17 @@ inline unsigned int RTLIL::SigBit::hash() const {
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return data;
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}
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inline RTLIL::SigBit &RTLIL::SigSpecIterator::operator*() const {
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return (*sig_p)[index];
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}
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// inline RTLIL::SigBit &RTLIL::SigSpecIterator::operator*() const {
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// return (*sig_p)[index];
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// }
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inline const RTLIL::SigBit &RTLIL::SigSpecConstIterator::operator*() const {
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return (*sig_p)[index];
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}
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// inline const RTLIL::SigBit &RTLIL::SigSpecConstIterator::operator*() const {
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// return (*sig_p)[index];
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// }
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inline RTLIL::SigBit::SigBit(const RTLIL::SigSpec &sig) {
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log_assert(sig.size() == 1 && sig.chunks().size() == 1);
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*this = SigBit(sig.chunks().front());
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log_assert(sig.size() == 1);
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*this = SigBit(*sig.chunks());
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}
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template<typename T>
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