#define CODEGEN_REGISTERS_H
#include "SetTheory.h"
-#include "llvm/TableGen/Record.h"
-#include "llvm/CodeGen/ValueTypes.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/BitVector.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SetVector.h"
+#include "llvm/CodeGen/ValueTypes.h"
#include "llvm/Support/ErrorHandling.h"
+#include "llvm/TableGen/Record.h"
#include <cstdlib>
#include <map>
-#include <string>
#include <set>
+#include <string>
#include <vector>
namespace llvm {
/// CodeGenSubRegIndex - Represents a sub-register index.
class CodeGenSubRegIndex {
Record *const TheDef;
+ std::string Name;
+ std::string Namespace;
public:
const unsigned EnumValue;
+ unsigned LaneMask;
CodeGenSubRegIndex(Record *R, unsigned Enum);
+ CodeGenSubRegIndex(StringRef N, StringRef Nspace, unsigned Enum);
- const std::string &getName() const;
- std::string getNamespace() const;
+ const std::string &getName() const { return Name; }
+ const std::string &getNamespace() const { return Namespace; }
std::string getQualifiedName() const;
// Order CodeGenSubRegIndex pointers by EnumValue.
// Update the composite maps of components specified in 'ComposedOf'.
void updateComponents(CodeGenRegBank&);
- // Clean out redundant composite mappings.
- void cleanComposites();
-
// Return the map of composites.
const CompMap &getComposites() const { return Composed; }
+ // Compute LaneMask from Composed. Return LaneMask.
+ unsigned computeLaneMask();
+
private:
CompMap Composed;
};
public:
unsigned EnumValue;
std::string Namespace;
- std::vector<MVT::SimpleValueType> VTs;
+ SmallVector<MVT::SimpleValueType, 4> VTs;
unsigned SpillSize;
unsigned SpillAlignment;
int CopyCost;
const std::string &getName() const { return Name; }
std::string getQualifiedName() const;
- const std::vector<MVT::SimpleValueType> &getValueTypes() const {return VTs;}
+ ArrayRef<MVT::SimpleValueType> getValueTypes() const {return VTs;}
unsigned getNumValueTypes() const { return VTs.size(); }
MVT::SimpleValueType getValueTypeNum(unsigned VTNum) const {
// these two registers and their super-registers.
const CodeGenRegister *Roots[2];
- RegUnit() : Weight(0) { Roots[0] = Roots[1] = 0; }
+ // Index into RegClassUnitSets where we can find the list of UnitSets that
+ // contain this unit.
+ unsigned RegClassUnitSetsIdx;
+
+ RegUnit() : Weight(0), RegClassUnitSetsIdx(0) { Roots[0] = Roots[1] = 0; }
ArrayRef<const CodeGenRegister*> getRoots() const {
assert(!(Roots[1] && !Roots[0]) && "Invalid roots array");
// CodeGenRegBank - Represent a target's registers and the relations between
// them.
class CodeGenRegBank {
- RecordKeeper &Records;
SetTheory Sets;
// SubRegIndices.
std::vector<CodeGenSubRegIndex*> SubRegIndices;
DenseMap<Record*, CodeGenSubRegIndex*> Def2SubRegIdx;
- unsigned NumNamedIndices;
+
+ CodeGenSubRegIndex *createSubRegIndex(StringRef Name, StringRef NameSpace);
typedef std::map<SmallVector<CodeGenSubRegIndex*, 8>,
CodeGenSubRegIndex*> ConcatIdxMap;
// Registers.
std::vector<CodeGenRegister*> Registers;
+ StringMap<CodeGenRegister*> RegistersByName;
DenseMap<Record*, CodeGenRegister*> Def2Reg;
unsigned NumNativeRegUnits;
// Map RegisterClass index to the index of the RegUnitSet that contains the
// class's units and any inferred RegUnit supersets.
+ //
+ // NOTE: This could grow beyond the number of register classes when we map
+ // register units to lists of unit sets. If the list of unit sets does not
+ // already exist for a register class, we create a new entry in this vector.
std::vector<std::vector<unsigned> > RegClassUnitSets;
// Add RC to *2RC maps.
// Populate the Composite map from sub-register relationships.
void computeComposites();
+ // Compute a lane mask for each sub-register index.
+ void computeSubRegIndexLaneMasks();
+
public:
CodeGenRegBank(RecordKeeper&);
// in the .td files. The rest are synthesized such that all sub-registers
// have a unique name.
ArrayRef<CodeGenSubRegIndex*> getSubRegIndices() { return SubRegIndices; }
- unsigned getNumNamedIndices() { return NumNamedIndices; }
// Find a SubRegIndex form its Record def.
CodeGenSubRegIndex *getSubRegIdx(Record*);
}
const std::vector<CodeGenRegister*> &getRegisters() { return Registers; }
+ const StringMap<CodeGenRegister*> &getRegistersByName() {
+ return RegistersByName;
+ }
// Find a register from its Record def.
CodeGenRegister *getReg(Record*);
unsigned getNumNativeRegUnits() const {
return NumNativeRegUnits;
- };
+ }
RegUnit &getRegUnit(unsigned RUID) { return RegUnits[RUID]; }
const RegUnit &getRegUnit(unsigned RUID) const { return RegUnits[RUID]; }
return RegUnitSets[Idx];
}
+ // The number of pressure set lists may be larget than the number of
+ // register classes if some register units appeared in a list of sets that
+ // did not correspond to an existing register class.
+ unsigned getNumRegClassPressureSetLists() const {
+ return RegClassUnitSets.size();
+ }
+
// Get a list of pressure set IDs for a register class. Liveness of a
// register in this class impacts each pressure set in this list by the
// weight of the register. An exact solution requires all registers in a