PseudoLoweringEmitter.h [plain text]
#ifndef PSEUDOLOWERINGEMITTER_H
#define PSEUDOLOWERINGEMITTER_H
#include "CodeGenInstruction.h"
#include "CodeGenTarget.h"
#include "llvm/TableGen/TableGenBackend.h"
#include "llvm/ADT/IndexedMap.h"
#include "llvm/ADT/SmallVector.h"
namespace llvm {
class PseudoLoweringEmitter : public TableGenBackend {
struct OpData {
enum MapKind { Operand, Imm, Reg };
MapKind Kind;
union {
unsigned Operand; uint64_t Imm; Record *Reg; } Data;
};
struct PseudoExpansion {
CodeGenInstruction Source; CodeGenInstruction Dest; IndexedMap<OpData> OperandMap;
PseudoExpansion(CodeGenInstruction &s, CodeGenInstruction &d,
IndexedMap<OpData> &m) :
Source(s), Dest(d), OperandMap(m) {}
};
RecordKeeper &Records;
CodeGenTarget Target;
SmallVector<PseudoExpansion, 64> Expansions;
unsigned addDagOperandMapping(Record *Rec, DagInit *Dag,
CodeGenInstruction &Insn,
IndexedMap<OpData> &OperandMap,
unsigned BaseIdx);
void evaluateExpansion(Record *Pseudo);
void emitLoweringEmitter(raw_ostream &o);
public:
PseudoLoweringEmitter(RecordKeeper &R) : Records(R), Target(R) {}
void run(raw_ostream &o);
};
}
#endif