mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-24 19:52:54 +01:00
431 lines
14 KiB
C++
431 lines
14 KiB
C++
//===-- llvm/CodeGen/MachineOperand.h - MachineOperand class ----*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file contains the declaration of the MachineOperand class.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_CODEGEN_MACHINEOPERAND_H
|
|
#define LLVM_CODEGEN_MACHINEOPERAND_H
|
|
|
|
#include "llvm/Support/DataTypes.h"
|
|
#include <cassert>
|
|
#include <iosfwd>
|
|
|
|
namespace llvm {
|
|
|
|
class ConstantFP;
|
|
class MachineBasicBlock;
|
|
class GlobalValue;
|
|
class MachineInstr;
|
|
class TargetMachine;
|
|
class MachineRegisterInfo;
|
|
|
|
/// MachineOperand class - Representation of each machine instruction operand.
|
|
///
|
|
class MachineOperand {
|
|
public:
|
|
enum MachineOperandType {
|
|
MO_Register, // Register operand.
|
|
MO_Immediate, // Immediate Operand
|
|
MO_FPImmediate,
|
|
MO_MachineBasicBlock, // MachineBasicBlock reference
|
|
MO_FrameIndex, // Abstract Stack Frame Index
|
|
MO_ConstantPoolIndex, // Address of indexed Constant in Constant Pool
|
|
MO_JumpTableIndex, // Address of indexed Jump Table for switch
|
|
MO_ExternalSymbol, // Name of external global symbol
|
|
MO_GlobalAddress // Address of a global value
|
|
};
|
|
|
|
private:
|
|
/// OpKind - Specify what kind of operand this is. This discriminates the
|
|
/// union.
|
|
MachineOperandType OpKind : 8;
|
|
|
|
/// IsDef/IsImp/IsKill/IsDead flags - These are only valid for MO_Register
|
|
/// operands.
|
|
|
|
/// IsDef - True if this is a def, false if this is a use of the register.
|
|
///
|
|
bool IsDef : 1;
|
|
|
|
/// IsImp - True if this is an implicit def or use, false if it is explicit.
|
|
///
|
|
bool IsImp : 1;
|
|
|
|
/// IsKill - True if this instruction is the last use of the register on this
|
|
/// path through the function. This is only valid on uses of registers.
|
|
bool IsKill : 1;
|
|
|
|
/// IsDead - True if this register is never used by a subsequent instruction.
|
|
/// This is only valid on definitions of registers.
|
|
bool IsDead : 1;
|
|
|
|
/// SubReg - Subregister number, only valid for MO_Register. A value of 0
|
|
/// indicates the MO_Register has no subReg.
|
|
unsigned char SubReg;
|
|
|
|
/// ParentMI - This is the instruction that this operand is embedded into.
|
|
/// This is valid for all operand types, when the operand is in an instr.
|
|
MachineInstr *ParentMI;
|
|
|
|
/// Contents union - This contains the payload for the various operand types.
|
|
union {
|
|
MachineBasicBlock *MBB; // For MO_MachineBasicBlock.
|
|
ConstantFP *CFP; // For MO_FPImmediate.
|
|
int64_t ImmVal; // For MO_Immediate.
|
|
|
|
struct { // For MO_Register.
|
|
unsigned RegNo;
|
|
MachineOperand **Prev; // Access list for register.
|
|
MachineOperand *Next;
|
|
} Reg;
|
|
|
|
/// OffsetedInfo - This struct contains the offset and an object identifier.
|
|
/// this represent the object as with an optional offset from it.
|
|
struct {
|
|
union {
|
|
int Index; // For MO_*Index - The index itself.
|
|
const char *SymbolName; // For MO_ExternalSymbol.
|
|
GlobalValue *GV; // For MO_GlobalAddress.
|
|
} Val;
|
|
int Offset; // An offset from the object.
|
|
} OffsetedInfo;
|
|
} Contents;
|
|
|
|
explicit MachineOperand(MachineOperandType K) : OpKind(K), ParentMI(0) {}
|
|
public:
|
|
MachineOperand(const MachineOperand &M) {
|
|
*this = M;
|
|
}
|
|
|
|
~MachineOperand() {}
|
|
|
|
/// getType - Returns the MachineOperandType for this operand.
|
|
///
|
|
MachineOperandType getType() const { return OpKind; }
|
|
|
|
/// getParent - Return the instruction that this operand belongs to.
|
|
///
|
|
MachineInstr *getParent() { return ParentMI; }
|
|
const MachineInstr *getParent() const { return ParentMI; }
|
|
|
|
void print(std::ostream &os, const TargetMachine *TM = 0) const;
|
|
|
|
/// Accessors that tell you what kind of MachineOperand you're looking at.
|
|
///
|
|
bool isRegister() const { return OpKind == MO_Register; }
|
|
bool isImmediate() const { return OpKind == MO_Immediate; }
|
|
bool isFPImmediate() const { return OpKind == MO_FPImmediate; }
|
|
bool isMachineBasicBlock() const { return OpKind == MO_MachineBasicBlock; }
|
|
bool isFrameIndex() const { return OpKind == MO_FrameIndex; }
|
|
bool isConstantPoolIndex() const { return OpKind == MO_ConstantPoolIndex; }
|
|
bool isJumpTableIndex() const { return OpKind == MO_JumpTableIndex; }
|
|
bool isGlobalAddress() const { return OpKind == MO_GlobalAddress; }
|
|
bool isExternalSymbol() const { return OpKind == MO_ExternalSymbol; }
|
|
|
|
bool isReg() const { return OpKind == MO_Register; }
|
|
bool isImm() const { return OpKind == MO_Immediate; }
|
|
bool isMBB() const { return OpKind == MO_MachineBasicBlock; }
|
|
bool isFI() const { return OpKind == MO_FrameIndex; }
|
|
bool isCPI() const { return OpKind == MO_ConstantPoolIndex; }
|
|
bool isJTI() const { return OpKind == MO_JumpTableIndex; }
|
|
bool isGlobal() const { return OpKind == MO_GlobalAddress; }
|
|
bool isSymbol() const { return OpKind == MO_ExternalSymbol; }
|
|
|
|
//===--------------------------------------------------------------------===//
|
|
// Accessors for Register Operands
|
|
//===--------------------------------------------------------------------===//
|
|
|
|
/// getReg - Returns the register number.
|
|
unsigned getReg() const {
|
|
assert(isRegister() && "This is not a register operand!");
|
|
return Contents.Reg.RegNo;
|
|
}
|
|
|
|
unsigned getSubReg() const {
|
|
assert(isRegister() && "Wrong MachineOperand accessor");
|
|
return (unsigned)SubReg;
|
|
}
|
|
|
|
bool isUse() const {
|
|
assert(isRegister() && "Wrong MachineOperand accessor");
|
|
return !IsDef;
|
|
}
|
|
|
|
bool isDef() const {
|
|
assert(isRegister() && "Wrong MachineOperand accessor");
|
|
return IsDef;
|
|
}
|
|
|
|
bool isImplicit() const {
|
|
assert(isRegister() && "Wrong MachineOperand accessor");
|
|
return IsImp;
|
|
}
|
|
|
|
bool isDead() const {
|
|
assert(isRegister() && "Wrong MachineOperand accessor");
|
|
return IsDead;
|
|
}
|
|
|
|
bool isKill() const {
|
|
assert(isRegister() && "Wrong MachineOperand accessor");
|
|
return IsKill;
|
|
}
|
|
|
|
/// getNextOperandForReg - Return the next MachineOperand in the function that
|
|
/// uses or defines this register.
|
|
MachineOperand *getNextOperandForReg() const {
|
|
assert(isRegister() && "This is not a register operand!");
|
|
return Contents.Reg.Next;
|
|
}
|
|
|
|
//===--------------------------------------------------------------------===//
|
|
// Mutators for Register Operands
|
|
//===--------------------------------------------------------------------===//
|
|
|
|
/// Change the register this operand corresponds to.
|
|
///
|
|
void setReg(unsigned Reg);
|
|
|
|
void setSubReg(unsigned subReg) {
|
|
assert(isRegister() && "Wrong MachineOperand accessor");
|
|
SubReg = (unsigned char)subReg;
|
|
}
|
|
|
|
void setIsUse(bool Val = true) {
|
|
assert(isRegister() && "Wrong MachineOperand accessor");
|
|
IsDef = !Val;
|
|
}
|
|
|
|
void setIsDef(bool Val = true) {
|
|
assert(isRegister() && "Wrong MachineOperand accessor");
|
|
IsDef = Val;
|
|
}
|
|
|
|
void setImplicit(bool Val = true) {
|
|
assert(isRegister() && "Wrong MachineOperand accessor");
|
|
IsImp = Val;
|
|
}
|
|
|
|
void setIsKill(bool Val = true) {
|
|
assert(isRegister() && !IsDef && "Wrong MachineOperand accessor");
|
|
IsKill = Val;
|
|
}
|
|
|
|
void setIsDead(bool Val = true) {
|
|
assert(isRegister() && IsDef && "Wrong MachineOperand accessor");
|
|
IsDead = Val;
|
|
}
|
|
|
|
|
|
//===--------------------------------------------------------------------===//
|
|
// Accessors for various operand types.
|
|
//===--------------------------------------------------------------------===//
|
|
|
|
int64_t getImm() const {
|
|
assert(isImmediate() && "Wrong MachineOperand accessor");
|
|
return Contents.ImmVal;
|
|
}
|
|
|
|
ConstantFP *getFPImm() const {
|
|
assert(isFPImmediate() && "Wrong MachineOperand accessor");
|
|
return Contents.CFP;
|
|
}
|
|
|
|
MachineBasicBlock *getMBB() const {
|
|
assert(isMachineBasicBlock() && "Wrong MachineOperand accessor");
|
|
return Contents.MBB;
|
|
}
|
|
|
|
int getIndex() const {
|
|
assert((isFrameIndex() || isConstantPoolIndex() || isJumpTableIndex()) &&
|
|
"Wrong MachineOperand accessor");
|
|
return Contents.OffsetedInfo.Val.Index;
|
|
}
|
|
|
|
GlobalValue *getGlobal() const {
|
|
assert(isGlobalAddress() && "Wrong MachineOperand accessor");
|
|
return Contents.OffsetedInfo.Val.GV;
|
|
}
|
|
|
|
int getOffset() const {
|
|
assert((isGlobalAddress() || isExternalSymbol() || isConstantPoolIndex()) &&
|
|
"Wrong MachineOperand accessor");
|
|
return Contents.OffsetedInfo.Offset;
|
|
}
|
|
|
|
const char *getSymbolName() const {
|
|
assert(isExternalSymbol() && "Wrong MachineOperand accessor");
|
|
return Contents.OffsetedInfo.Val.SymbolName;
|
|
}
|
|
|
|
//===--------------------------------------------------------------------===//
|
|
// Mutators for various operand types.
|
|
//===--------------------------------------------------------------------===//
|
|
|
|
void setImm(int64_t immVal) {
|
|
assert(isImmediate() && "Wrong MachineOperand mutator");
|
|
Contents.ImmVal = immVal;
|
|
}
|
|
|
|
void setOffset(int Offset) {
|
|
assert((isGlobalAddress() || isExternalSymbol() || isConstantPoolIndex()) &&
|
|
"Wrong MachineOperand accessor");
|
|
Contents.OffsetedInfo.Offset = Offset;
|
|
}
|
|
|
|
void setIndex(int Idx) {
|
|
assert((isFrameIndex() || isConstantPoolIndex() || isJumpTableIndex()) &&
|
|
"Wrong MachineOperand accessor");
|
|
Contents.OffsetedInfo.Val.Index = Idx;
|
|
}
|
|
|
|
void setMBB(MachineBasicBlock *MBB) {
|
|
assert(isMachineBasicBlock() && "Wrong MachineOperand accessor");
|
|
Contents.MBB = MBB;
|
|
}
|
|
|
|
//===--------------------------------------------------------------------===//
|
|
// Other methods.
|
|
//===--------------------------------------------------------------------===//
|
|
|
|
/// isIdenticalTo - Return true if this operand is identical to the specified
|
|
/// operand. Note: This method ignores isKill and isDead properties.
|
|
bool isIdenticalTo(const MachineOperand &Other) const;
|
|
|
|
/// ChangeToImmediate - Replace this operand with a new immediate operand of
|
|
/// the specified value. If an operand is known to be an immediate already,
|
|
/// the setImm method should be used.
|
|
void ChangeToImmediate(int64_t ImmVal);
|
|
|
|
/// ChangeToRegister - Replace this operand with a new register operand of
|
|
/// the specified value. If an operand is known to be an register already,
|
|
/// the setReg method should be used.
|
|
void ChangeToRegister(unsigned Reg, bool isDef, bool isImp = false,
|
|
bool isKill = false, bool isDead = false);
|
|
|
|
//===--------------------------------------------------------------------===//
|
|
// Construction methods.
|
|
//===--------------------------------------------------------------------===//
|
|
|
|
static MachineOperand CreateImm(int64_t Val) {
|
|
MachineOperand Op(MachineOperand::MO_Immediate);
|
|
Op.setImm(Val);
|
|
return Op;
|
|
}
|
|
|
|
static MachineOperand CreateFPImm(ConstantFP *CFP) {
|
|
MachineOperand Op(MachineOperand::MO_FPImmediate);
|
|
Op.Contents.CFP = CFP;
|
|
return Op;
|
|
}
|
|
|
|
static MachineOperand CreateReg(unsigned Reg, bool isDef, bool isImp = false,
|
|
bool isKill = false, bool isDead = false,
|
|
unsigned SubReg = 0) {
|
|
MachineOperand Op(MachineOperand::MO_Register);
|
|
Op.IsDef = isDef;
|
|
Op.IsImp = isImp;
|
|
Op.IsKill = isKill;
|
|
Op.IsDead = isDead;
|
|
Op.Contents.Reg.RegNo = Reg;
|
|
Op.Contents.Reg.Prev = 0;
|
|
Op.Contents.Reg.Next = 0;
|
|
Op.SubReg = SubReg;
|
|
return Op;
|
|
}
|
|
static MachineOperand CreateMBB(MachineBasicBlock *MBB) {
|
|
MachineOperand Op(MachineOperand::MO_MachineBasicBlock);
|
|
Op.setMBB(MBB);
|
|
return Op;
|
|
}
|
|
static MachineOperand CreateFI(unsigned Idx) {
|
|
MachineOperand Op(MachineOperand::MO_FrameIndex);
|
|
Op.setIndex(Idx);
|
|
return Op;
|
|
}
|
|
static MachineOperand CreateCPI(unsigned Idx, int Offset) {
|
|
MachineOperand Op(MachineOperand::MO_ConstantPoolIndex);
|
|
Op.setIndex(Idx);
|
|
Op.setOffset(Offset);
|
|
return Op;
|
|
}
|
|
static MachineOperand CreateJTI(unsigned Idx) {
|
|
MachineOperand Op(MachineOperand::MO_JumpTableIndex);
|
|
Op.setIndex(Idx);
|
|
return Op;
|
|
}
|
|
static MachineOperand CreateGA(GlobalValue *GV, int Offset) {
|
|
MachineOperand Op(MachineOperand::MO_GlobalAddress);
|
|
Op.Contents.OffsetedInfo.Val.GV = GV;
|
|
Op.setOffset(Offset);
|
|
return Op;
|
|
}
|
|
static MachineOperand CreateES(const char *SymName, int Offset = 0) {
|
|
MachineOperand Op(MachineOperand::MO_ExternalSymbol);
|
|
Op.Contents.OffsetedInfo.Val.SymbolName = SymName;
|
|
Op.setOffset(Offset);
|
|
return Op;
|
|
}
|
|
const MachineOperand &operator=(const MachineOperand &MO) {
|
|
OpKind = MO.OpKind;
|
|
IsDef = MO.IsDef;
|
|
IsImp = MO.IsImp;
|
|
IsKill = MO.IsKill;
|
|
IsDead = MO.IsDead;
|
|
SubReg = MO.SubReg;
|
|
ParentMI = MO.ParentMI;
|
|
Contents = MO.Contents;
|
|
return *this;
|
|
}
|
|
|
|
friend class MachineInstr;
|
|
friend class MachineRegisterInfo;
|
|
private:
|
|
//===--------------------------------------------------------------------===//
|
|
// Methods for handling register use/def lists.
|
|
//===--------------------------------------------------------------------===//
|
|
|
|
/// isOnRegUseList - Return true if this operand is on a register use/def list
|
|
/// or false if not. This can only be called for register operands that are
|
|
/// part of a machine instruction.
|
|
bool isOnRegUseList() const {
|
|
assert(isReg() && "Can only add reg operand to use lists");
|
|
return Contents.Reg.Prev != 0;
|
|
}
|
|
|
|
/// AddRegOperandToRegInfo - Add this register operand to the specified
|
|
/// MachineRegisterInfo. If it is null, then the next/prev fields should be
|
|
/// explicitly nulled out.
|
|
void AddRegOperandToRegInfo(MachineRegisterInfo *RegInfo);
|
|
|
|
void RemoveRegOperandFromRegInfo() {
|
|
assert(isOnRegUseList() && "Can only add reg operand to use lists");
|
|
// Unlink this from the doubly linked list of operands.
|
|
MachineOperand *NextOp = Contents.Reg.Next;
|
|
*Contents.Reg.Prev = NextOp;
|
|
if (NextOp) {
|
|
assert(NextOp->getReg() == getReg() && "Corrupt reg use/def chain!");
|
|
NextOp->Contents.Reg.Prev = Contents.Reg.Prev;
|
|
}
|
|
Contents.Reg.Prev = 0;
|
|
Contents.Reg.Next = 0;
|
|
}
|
|
};
|
|
|
|
inline std::ostream &operator<<(std::ostream &OS, const MachineOperand &MO) {
|
|
MO.print(OS, 0);
|
|
return OS;
|
|
}
|
|
|
|
} // End llvm namespace
|
|
|
|
#endif
|