utils/TableGen/FixedLenDecoderEmitter.cpp

229 class FilterChooser;
231 /// Filter - Filter works with FilterChooser to produce the decoding tree for
236 /// FilterChooser to decide what further decoding logic to employ, or in another
237 /// words, what other remaining bits to look at.  The FilterChooser eventually
241 /// FilterChooser becomes 1 or if there is a conflict.  A conflict happens when
242 /// the Filter/FilterChooser combo does not know how to distinguish among the
269   const FilterChooser *Owner;// points to the FilterChooser who owns this filter
282   std::map<unsigned, std::unique_ptr<const FilterChooser>> FilterChooserMap;
292   Filter(FilterChooser &owner, unsigned startBit, unsigned numBits, bool mixed);
305   const FilterChooser &getVariableFC() const {
312   // inferior FilterChooser's.
330 // These are states of our finite state machines used in FilterChooser's
340 /// FilterChooser - FilterChooser chooses the best filter among a set of Filters
344 /// of instructions available, FilterChooser builds up the possible Filters that
353 /// decoding tree.  And each case is delegated to an inferior FilterChooser to
357 class FilterChooser {
379   // Links to the FilterChooser above us in the decoding tree.
380   const FilterChooser *Parent;
392   FilterChooser(ArrayRef<EncodingAndInst> Insts,
402   FilterChooser(ArrayRef<EncodingAndInst> Insts,
406                 const FilterChooser &parent)
413   FilterChooser(const FilterChooser &) = delete;
414   void operator=(const FilterChooser &) = delete;
553 Filter::Filter(FilterChooser &owner, unsigned startBit, unsigned numBits,
589 // inferior FilterChooser's.
606         std::make_pair(-1U, std::make_unique<FilterChooser>(
632         Inst.first, std::make_unique<FilterChooser>(
994 bool FilterChooser::fieldFromInsn(uint64_t &Field, insn_t &Insn,
1011 void FilterChooser::dumpFilterArray(raw_ostream &o,
1033 void FilterChooser::dumpStack(raw_ostream &o, const char *prefix) const {
1034   const FilterChooser *current = this;
1048 unsigned FilterChooser::getIslands(std::vector<unsigned> &StartBits,
1104 void FilterChooser::emitBinaryParser(raw_ostream &o, unsigned &Indentation,
1138 void FilterChooser::emitDecoder(raw_ostream &OS, unsigned Indentation,
1161 unsigned FilterChooser::getDecoderIndex(DecoderSet &Decoders,
1194 bool FilterChooser::emitPredicateMatch(raw_ostream &o, unsigned &Indentation,
1224 bool FilterChooser::doesOpcodeNeedPredicate(unsigned Opc) const {
1242 unsigned FilterChooser::getPredicateIndex(DecoderTableInfo &TableInfo,
1257 void FilterChooser::emitPredicateTableEntry(DecoderTableInfo &TableInfo,
1288 void FilterChooser::emitSoftFailTableEntry(DecoderTableInfo &TableInfo,
1350 void FilterChooser::emitSingletonTableEntry(DecoderTableInfo &TableInfo,
1431 void FilterChooser::emitSingletonTableEntry(DecoderTableInfo &TableInfo,
1450 void FilterChooser::runSingleFilter(unsigned startBit, unsigned numBit,
1460 void FilterChooser::reportRegion(bitAttr_t RA, unsigned StartBit,
1471 bool FilterChooser::filterProcessor(bool AllowMixed, bool Greedy) {
1697 } // end of FilterChooser::filterProcessor(bool)
1702 void FilterChooser::doFilter() {
1704   assert(Num && "FilterChooser created with no instructions");
1728 void FilterChooser::emitTableEntries(DecoderTableInfo &TableInfo) const {
2479     FilterChooser FC(NumberedEncodingsRef, Opc.second, Operands,