#define LLVM_CODEGEN_MACHINEOPERAND_H
#include "llvm/Support/DataTypes.h"
-#include <vector>
#include <cassert>
#include <iosfwd>
namespace llvm {
+class ConstantFP;
class MachineBasicBlock;
class GlobalValue;
class MachineInstr;
class TargetMachine;
+class MachineRegisterInfo;
+class raw_ostream;
/// MachineOperand class - Representation of each machine instruction operand.
///
class MachineOperand {
public:
enum MachineOperandType {
- MO_Register, // Register operand.
- MO_Immediate, // Immediate Operand
- 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
+ MO_Register, ///< Register operand.
+ MO_Immediate, ///< Immediate operand
+ MO_FPImmediate, ///< Floating-point immediate operand
+ 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:
/// This is only valid on definitions of registers.
bool IsDead : 1;
+ /// IsEarlyClobber - True if this MO_Register 'def' operand is written to
+ /// by the MachineInstr before all input registers are read. This is used to
+ /// model the GCC inline asm '&' constraint modifier.
+ bool IsEarlyClobber : 1;
+
/// SubReg - Subregister number, only valid for MO_Register. A value of 0
/// indicates the MO_Register has no subReg.
unsigned char SubReg;
/// Contents union - This contains the payload for the various operand types.
union {
MachineBasicBlock *MBB; // For MO_MachineBasicBlock.
- unsigned RegNo; // For MO_Register.
+ const 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.
const char *SymbolName; // For MO_ExternalSymbol.
GlobalValue *GV; // For MO_GlobalAddress.
} Val;
- int Offset; // An offset from the object.
+ int64_t Offset; // An offset from the object.
} OffsetedInfo;
} Contents;
- MachineOperand(MachineOperandType K) : OpKind(K), ParentMI(0) {}
-
+ explicit MachineOperand(MachineOperandType K) : OpKind(K), ParentMI(0) {}
public:
MachineOperand(const MachineOperand &M) {
*this = M;
const MachineInstr *getParent() const { return ParentMI; }
void print(std::ostream &os, const TargetMachine *TM = 0) const;
+ void print(raw_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 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; }
+ //===--------------------------------------------------------------------===//
+ // Accessors that tell you what kind of MachineOperand you're looking at.
+ //===--------------------------------------------------------------------===//
+
+ /// isReg - Tests if this is a MO_Register operand.
+ bool isReg() const { return OpKind == MO_Register; }
+ /// isImm - Tests if this is a MO_Immediate operand.
+ bool isImm() const { return OpKind == MO_Immediate; }
+ /// isFPImm - Tests if this is a MO_FPImmediate operand.
+ bool isFPImm() const { return OpKind == MO_FPImmediate; }
+ /// isMBB - Tests if this is a MO_MachineBasicBlock operand.
+ bool isMBB() const { return OpKind == MO_MachineBasicBlock; }
+ /// isFI - Tests if this is a MO_FrameIndex operand.
+ bool isFI() const { return OpKind == MO_FrameIndex; }
+ /// isCPI - Tests if this is a MO_ConstantPoolIndex operand.
+ bool isCPI() const { return OpKind == MO_ConstantPoolIndex; }
+ /// isJTI - Tests if this is a MO_JumpTableIndex operand.
+ bool isJTI() const { return OpKind == MO_JumpTableIndex; }
+ /// isGlobal - Tests if this is a MO_GlobalAddress operand.
+ bool isGlobal() const { return OpKind == MO_GlobalAddress; }
+ /// isSymbol - Tests if this is a MO_ExternalSymbol operand.
+ 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.RegNo;
+ assert(isReg() && "This is not a register operand!");
+ return Contents.Reg.RegNo;
}
unsigned getSubReg() const {
- assert(isRegister() && "Wrong MachineOperand accessor");
+ assert(isReg() && "Wrong MachineOperand accessor");
return (unsigned)SubReg;
}
bool isUse() const {
- assert(isRegister() && "Wrong MachineOperand accessor");
+ assert(isReg() && "Wrong MachineOperand accessor");
return !IsDef;
}
bool isDef() const {
- assert(isRegister() && "Wrong MachineOperand accessor");
+ assert(isReg() && "Wrong MachineOperand accessor");
return IsDef;
}
bool isImplicit() const {
- assert(isRegister() && "Wrong MachineOperand accessor");
+ assert(isReg() && "Wrong MachineOperand accessor");
return IsImp;
}
bool isDead() const {
- assert(isRegister() && "Wrong MachineOperand accessor");
+ assert(isReg() && "Wrong MachineOperand accessor");
return IsDead;
}
bool isKill() const {
- assert(isRegister() && "Wrong MachineOperand accessor");
+ assert(isReg() && "Wrong MachineOperand accessor");
return IsKill;
}
+
+ bool isEarlyClobber() const {
+ assert(isReg() && "Wrong MachineOperand accessor");
+ return IsEarlyClobber;
+ }
+
+ /// getNextOperandForReg - Return the next MachineOperand in the function that
+ /// uses or defines this register.
+ MachineOperand *getNextOperandForReg() const {
+ assert(isReg() && "This is not a register operand!");
+ return Contents.Reg.Next;
+ }
//===--------------------------------------------------------------------===//
// Mutators for Register Operands
//===--------------------------------------------------------------------===//
- void setReg(unsigned Reg) {
- assert(isRegister() && "This is not a register operand!");
- Contents.RegNo = Reg;
- }
-
+ /// Change the register this operand corresponds to.
+ ///
+ void setReg(unsigned Reg);
+
void setSubReg(unsigned subReg) {
- assert(isRegister() && "Wrong MachineOperand accessor");
+ assert(isReg() && "Wrong MachineOperand accessor");
SubReg = (unsigned char)subReg;
}
void setIsUse(bool Val = true) {
- assert(isRegister() && "Wrong MachineOperand accessor");
+ assert(isReg() && "Wrong MachineOperand accessor");
IsDef = !Val;
}
void setIsDef(bool Val = true) {
- assert(isRegister() && "Wrong MachineOperand accessor");
+ assert(isReg() && "Wrong MachineOperand accessor");
IsDef = Val;
}
void setImplicit(bool Val = true) {
- assert(isRegister() && "Wrong MachineOperand accessor");
+ assert(isReg() && "Wrong MachineOperand accessor");
IsImp = Val;
}
void setIsKill(bool Val = true) {
- assert(isRegister() && !IsDef && "Wrong MachineOperand accessor");
+ assert(isReg() && !IsDef && "Wrong MachineOperand accessor");
IsKill = Val;
}
void setIsDead(bool Val = true) {
- assert(isRegister() && IsDef && "Wrong MachineOperand accessor");
+ assert(isReg() && IsDef && "Wrong MachineOperand accessor");
IsDead = Val;
}
+ void setIsEarlyClobber(bool Val = true) {
+ assert(isReg() && IsDef && "Wrong MachineOperand accessor");
+ IsEarlyClobber = Val;
+ }
//===--------------------------------------------------------------------===//
// Accessors for various operand types.
//===--------------------------------------------------------------------===//
int64_t getImm() const {
- assert(isImmediate() && "Wrong MachineOperand accessor");
+ assert(isImm() && "Wrong MachineOperand accessor");
return Contents.ImmVal;
}
- MachineBasicBlock *getMBB() const {
- assert(isMachineBasicBlock() && "Wrong MachineOperand accessor");
- return Contents.MBB;
+ const ConstantFP *getFPImm() const {
+ assert(isFPImm() && "Wrong MachineOperand accessor");
+ return Contents.CFP;
}
- MachineBasicBlock *getMachineBasicBlock() const {
- assert(isMachineBasicBlock() && "Wrong MachineOperand accessor");
+
+ MachineBasicBlock *getMBB() const {
+ assert(isMBB() && "Wrong MachineOperand accessor");
return Contents.MBB;
}
int getIndex() const {
- assert((isFrameIndex() || isConstantPoolIndex() || isJumpTableIndex()) &&
+ assert((isFI() || isCPI() || isJTI()) &&
"Wrong MachineOperand accessor");
return Contents.OffsetedInfo.Val.Index;
}
- int getFrameIndex() const { return getIndex(); }
- unsigned getConstantPoolIndex() const { return getIndex(); }
- unsigned getJumpTableIndex() const { return getIndex(); }
-
GlobalValue *getGlobal() const {
- assert(isGlobalAddress() && "Wrong MachineOperand accessor");
+ assert(isGlobal() && "Wrong MachineOperand accessor");
return Contents.OffsetedInfo.Val.GV;
}
- int getOffset() const {
- assert((isGlobalAddress() || isExternalSymbol() || isConstantPoolIndex()) &&
+
+ int64_t getOffset() const {
+ assert((isGlobal() || isSymbol() || isCPI()) &&
"Wrong MachineOperand accessor");
return Contents.OffsetedInfo.Offset;
}
+
const char *getSymbolName() const {
- assert(isExternalSymbol() && "Wrong MachineOperand accessor");
+ assert(isSymbol() && "Wrong MachineOperand accessor");
return Contents.OffsetedInfo.Val.SymbolName;
}
//===--------------------------------------------------------------------===//
void setImm(int64_t immVal) {
- assert(isImmediate() && "Wrong MachineOperand mutator");
+ assert(isImm() && "Wrong MachineOperand mutator");
Contents.ImmVal = immVal;
}
- void setOffset(int Offset) {
- assert((isGlobalAddress() || isExternalSymbol() || isConstantPoolIndex()) &&
+ void setOffset(int64_t Offset) {
+ assert((isGlobal() || isSymbol() || isCPI()) &&
"Wrong MachineOperand accessor");
Contents.OffsetedInfo.Offset = Offset;
}
void setIndex(int Idx) {
- assert((isFrameIndex() || isConstantPoolIndex() || isJumpTableIndex()) &&
+ assert((isFI() || isCPI() || isJTI()) &&
"Wrong MachineOperand accessor");
Contents.OffsetedInfo.Val.Index = Idx;
}
- void setConstantPoolIndex(unsigned Idx) { setIndex(Idx); }
- void setJumpTableIndex(unsigned Idx) { setIndex(Idx); }
-
- void setMachineBasicBlock(MachineBasicBlock *MBB) {
- assert(isMachineBasicBlock() && "Wrong MachineOperand accessor");
+ void setMBB(MachineBasicBlock *MBB) {
+ assert(isMBB() && "Wrong MachineOperand accessor");
Contents.MBB = MBB;
}
/// 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) {
- OpKind = MO_Immediate;
- Contents.ImmVal = ImmVal;
- }
-
+ 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) {
- OpKind = MO_Register;
- Contents.RegNo = Reg;
- IsDef = isDef;
- IsImp = isImp;
- IsKill = isKill;
- IsDead = isDead;
- SubReg = 0;
- }
+ bool isKill = false, bool isDead = false);
//===--------------------------------------------------------------------===//
// Construction methods.
return Op;
}
+ static MachineOperand CreateFPImm(const 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) {
+ unsigned SubReg = 0,
+ bool isEarlyClobber = false) {
MachineOperand Op(MachineOperand::MO_Register);
Op.IsDef = isDef;
Op.IsImp = isImp;
Op.IsKill = isKill;
Op.IsDead = isDead;
- Op.Contents.RegNo = Reg;
+ Op.IsEarlyClobber = isEarlyClobber;
+ 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.setMachineBasicBlock(MBB);
+ Op.setMBB(MBB);
return Op;
}
static MachineOperand CreateFI(unsigned Idx) {
Op.setIndex(Idx);
return Op;
}
- static MachineOperand CreateGA(GlobalValue *GV, int Offset) {
+ static MachineOperand CreateGA(GlobalValue *GV, int64_t 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) {
+ static MachineOperand CreateES(const char *SymName, int64_t Offset = 0) {
MachineOperand Op(MachineOperand::MO_ExternalSymbol);
Op.Contents.OffsetedInfo.Val.SymbolName = SymName;
Op.setOffset(Offset);
IsImp = MO.IsImp;
IsKill = MO.IsKill;
IsDead = MO.IsDead;
+ IsEarlyClobber = MO.IsEarlyClobber;
SubReg = MO.SubReg;
ParentMI = MO.ParentMI;
Contents = MO.Contents;
}
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() && "Reg operand is not on a use list");
+ // 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) {
return OS;
}
+inline raw_ostream &operator<<(raw_ostream &OS, const MachineOperand& MO) {
+ MO.print(OS, 0);
+ return OS;
+}
+
} // End llvm namespace
#endif
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