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Sink parts of TargetRegisterClass into MCRegisterClass. 

llvm-svn: 135683
This commit is contained in:
Benjamin Kramer 2011-07-21 17:26:50 +00:00
parent 27c1e2560c
commit 5fb7737513
2 changed files with 83 additions and 73 deletions
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77
llvm/include/llvm/MC/MCRegisterInfo.h
View File

@ -17,10 +17,87 @@
#define LLVM_MC_MCREGISTERINFO_H
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/DenseSet.h"
#include <cassert>
namespace llvm {
/// MCRegisterClass - Base class of TargetRegisterClass.
class MCRegisterClass {
public:
typedef const unsigned* iterator;
typedef const unsigned* const_iterator;
private:
unsigned ID;
const char *Name;
const unsigned RegSize, Alignment; // Size & Alignment of register in bytes
const int CopyCost;
const bool Allocatable;
const iterator RegsBegin, RegsEnd;
DenseSet<unsigned> RegSet;
public:
MCRegisterClass(unsigned id, const char *name,
unsigned RS, unsigned Al, int CC, bool Allocable,
iterator RB, iterator RE)
: ID(id), Name(name), RegSize(RS), Alignment(Al), CopyCost(CC),
Allocatable(Allocable), RegsBegin(RB), RegsEnd(RE) {
for (iterator I = RegsBegin, E = RegsEnd; I != E; ++I)
RegSet.insert(*I);
}
/// getID() - Return the register class ID number.
///
unsigned getID() const { return ID; }
/// getName() - Return the register class name for debugging.
///
const char *getName() const { return Name; }
/// begin/end - Return all of the registers in this class.
///
iterator begin() const { return RegsBegin; }
iterator end() const { return RegsEnd; }
/// getNumRegs - Return the number of registers in this class.
///
unsigned getNumRegs() const { return (unsigned)(RegsEnd-RegsBegin); }
/// getRegister - Return the specified register in the class.
///
unsigned getRegister(unsigned i) const {
assert(i < getNumRegs() && "Register number out of range!");
return RegsBegin[i];
}
/// contains - Return true if the specified register is included in this
/// register class. This does not include virtual registers.
bool contains(unsigned Reg) const {
return RegSet.count(Reg);
}
/// contains - Return true if both registers are in this class.
bool contains(unsigned Reg1, unsigned Reg2) const {
return contains(Reg1) && contains(Reg2);
}
/// getSize - Return the size of the register in bytes, which is also the size
/// of a stack slot allocated to hold a spilled copy of this register.
unsigned getSize() const { return RegSize; }
/// getAlignment - Return the minimum required alignment for a register of
/// this class.
unsigned getAlignment() const { return Alignment; }
/// getCopyCost - Return the cost of copying a value between two registers in
/// this class. A negative number means the register class is very expensive
/// to copy e.g. status flag register classes.
int getCopyCost() const { return CopyCost; }
/// isAllocatable - Return true if this register class may be used to create
/// virtual registers.
bool isAllocatable() const { return Allocatable; }
};
/// MCRegisterDesc - This record contains all of the information known about
/// a particular register. The Overlaps field contains a pointer to a zero
/// terminated array of registers that this register aliases, starting with

79
llvm/include/llvm/Target/TargetRegisterInfo.h
View File

@ -32,80 +32,30 @@ class RegScavenger;
template<class T> class SmallVectorImpl;
class raw_ostream;
class TargetRegisterClass {
class TargetRegisterClass : public MCRegisterClass {
public:
typedef const unsigned* iterator;
typedef const unsigned* const_iterator;
typedef const EVT* vt_iterator;
typedef const TargetRegisterClass* const * sc_iterator;
private:
unsigned ID;
const char *Name;
const vt_iterator VTs;
const sc_iterator SubClasses;
const sc_iterator SuperClasses;
const sc_iterator SubRegClasses;
const sc_iterator SuperRegClasses;
const unsigned RegSize, Alignment; // Size & Alignment of register in bytes
const int CopyCost;
const bool Allocatable;
const iterator RegsBegin, RegsEnd;
DenseSet<unsigned> RegSet;
public:
TargetRegisterClass(unsigned id,
const char *name,
const EVT *vts,
TargetRegisterClass(unsigned id, const char *name, const EVT *vts,
const TargetRegisterClass * const *subcs,
const TargetRegisterClass * const *supcs,
const TargetRegisterClass * const *subregcs,
const TargetRegisterClass * const *superregcs,
unsigned RS, unsigned Al, int CC, bool Allocable,
iterator RB, iterator RE)
: ID(id), Name(name), VTs(vts), SubClasses(subcs), SuperClasses(supcs),
SubRegClasses(subregcs), SuperRegClasses(superregcs),
RegSize(RS), Alignment(Al), CopyCost(CC), Allocatable(Allocable),
RegsBegin(RB), RegsEnd(RE) {
for (iterator I = RegsBegin, E = RegsEnd; I != E; ++I)
RegSet.insert(*I);
}
: MCRegisterClass(id, name, RS, Al, CC, Allocable, RB, RE),
VTs(vts), SubClasses(subcs), SuperClasses(supcs), SubRegClasses(subregcs),
SuperRegClasses(superregcs) {}
virtual ~TargetRegisterClass() {} // Allow subclasses
/// getID() - Return the register class ID number.
///
unsigned getID() const { return ID; }
/// getName() - Return the register class name for debugging.
///
const char *getName() const { return Name; }
/// begin/end - Return all of the registers in this class.
///
iterator begin() const { return RegsBegin; }
iterator end() const { return RegsEnd; }
/// getNumRegs - Return the number of registers in this class.
///
unsigned getNumRegs() const { return (unsigned)(RegsEnd-RegsBegin); }
/// getRegister - Return the specified register in the class.
///
unsigned getRegister(unsigned i) const {
assert(i < getNumRegs() && "Register number out of range!");
return RegsBegin[i];
}
/// contains - Return true if the specified register is included in this
/// register class. This does not include virtual registers.
bool contains(unsigned Reg) const {
return RegSet.count(Reg);
}
/// contains - Return true if both registers are in this class.
bool contains(unsigned Reg1, unsigned Reg2) const {
return contains(Reg1) && contains(Reg2);
}
/// hasType - return true if this TargetRegisterClass has the ValueType vt.
///
bool hasType(EVT vt) const {
@ -236,23 +186,6 @@ public:
ArrayRef<unsigned> getRawAllocationOrder(const MachineFunction &MF) const {
return makeArrayRef(begin(), getNumRegs());
}
/// getSize - Return the size of the register in bytes, which is also the size
/// of a stack slot allocated to hold a spilled copy of this register.
unsigned getSize() const { return RegSize; }
/// getAlignment - Return the minimum required alignment for a register of
/// this class.
unsigned getAlignment() const { return Alignment; }
/// getCopyCost - Return the cost of copying a value between two registers in
/// this class. A negative number means the register class is very expensive
/// to copy e.g. status flag register classes.
int getCopyCost() const { return CopyCost; }
/// isAllocatable - Return true if this register class may be used to create
/// virtual registers.
bool isAllocatable() const { return Allocatable; }
};
/// TargetRegisterInfoDesc - Extra information, not in MCRegisterDesc, about