#ifndef LLVM_CODEGEN_MACHINEOPERAND_H
#define LLVM_CODEGEN_MACHINEOPERAND_H
-#include "llvm/Support/DataTypes.h"
+#include "llvm/System/DataTypes.h"
#include <cassert>
-#include <iosfwd>
namespace llvm {
-
+
+class BlockAddress;
class ConstantFP;
-class MachineBasicBlock;
class GlobalValue;
+class MachineBasicBlock;
class MachineInstr;
-class TargetMachine;
class MachineRegisterInfo;
+class MDNode;
+class TargetMachine;
+class TargetRegisterInfo;
class raw_ostream;
-
+class MCSymbol;
+
/// 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
+ 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
+ MO_BlockAddress, ///< Address of a basic block
+ MO_Metadata, ///< Metadata reference (for debug info)
+ MO_MCSymbol ///< MCSymbol reference (for debug/eh info)
};
private:
/// OpKind - Specify what kind of operand this is. This discriminates the
/// union.
- MachineOperandType OpKind : 8;
-
+ unsigned char OpKind; // MachineOperandType
+
+ /// SubReg - Subregister number, only valid for MO_Register. A value of 0
+ /// indicates the MO_Register has no subReg.
+ unsigned char SubReg;
+
+ /// TargetFlags - This is a set of target-specific operand flags.
+ unsigned char TargetFlags;
+
/// 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;
/// This is only valid on definitions of registers.
bool IsDead : 1;
+ /// IsUndef - True if this is a register def / use of "undef", i.e. register
+ /// defined by an IMPLICIT_DEF. This is only valid on registers.
+ bool IsUndef : 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;
-
- /// ParentMI - This is the instruction that this operand is embedded into.
+ /// IsDebug - True if this MO_Register 'use' operand is in a debug pseudo,
+ /// not a real instruction. Such uses should be ignored during codegen.
+ bool IsDebug : 1;
+
+ /// 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;
MachineBasicBlock *MBB; // For MO_MachineBasicBlock.
const ConstantFP *CFP; // For MO_FPImmediate.
int64_t ImmVal; // For MO_Immediate.
+ const MDNode *MD; // For MO_Metadata.
+ MCSymbol *Sym; // For MO_MCSymbol
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.
+ const GlobalValue *GV; // For MO_GlobalAddress.
+ const BlockAddress *BA; // For MO_BlockAddress.
} Val;
- int64_t Offset; // An offset from the object.
+ int64_t Offset; // An offset from the object.
} OffsetedInfo;
} Contents;
-
- explicit MachineOperand(MachineOperandType K) : OpKind(K), ParentMI(0) {}
-public:
- MachineOperand(const MachineOperand &M) {
- *this = M;
+
+ explicit MachineOperand(MachineOperandType K) : OpKind(K), ParentMI(0) {
+ TargetFlags = 0;
}
-
- ~MachineOperand() {}
-
+public:
/// getType - Returns the MachineOperandType for this operand.
///
- MachineOperandType getType() const { return OpKind; }
+ MachineOperandType getType() const { return (MachineOperandType)OpKind; }
+
+ unsigned char getTargetFlags() const { return TargetFlags; }
+ void setTargetFlags(unsigned char F) { TargetFlags = F; }
+ void addTargetFlag(unsigned char F) { TargetFlags |= F; }
+
/// 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;
+
void print(raw_ostream &os, const TargetMachine *TM = 0) const;
//===--------------------------------------------------------------------===//
bool isGlobal() const { return OpKind == MO_GlobalAddress; }
/// isSymbol - Tests if this is a MO_ExternalSymbol operand.
bool isSymbol() const { return OpKind == MO_ExternalSymbol; }
+ /// isBlockAddress - Tests if this is a MO_BlockAddress operand.
+ bool isBlockAddress() const { return OpKind == MO_BlockAddress; }
+ /// isMetadata - Tests if this is a MO_Metadata operand.
+ bool isMetadata() const { return OpKind == MO_Metadata; }
+ bool isMCSymbol() const { return OpKind == MO_MCSymbol; }
//===--------------------------------------------------------------------===//
// Accessors for Register Operands
assert(isReg() && "This is not a register operand!");
return Contents.Reg.RegNo;
}
-
+
unsigned getSubReg() const {
assert(isReg() && "Wrong MachineOperand accessor");
return (unsigned)SubReg;
}
-
- bool isUse() const {
+
+ bool isUse() const {
assert(isReg() && "Wrong MachineOperand accessor");
return !IsDef;
}
-
+
bool isDef() const {
assert(isReg() && "Wrong MachineOperand accessor");
return IsDef;
}
-
- bool isImplicit() const {
+
+ bool isImplicit() const {
assert(isReg() && "Wrong MachineOperand accessor");
return IsImp;
}
-
+
bool isDead() const {
assert(isReg() && "Wrong MachineOperand accessor");
return IsDead;
}
-
+
bool isKill() const {
assert(isReg() && "Wrong MachineOperand accessor");
return IsKill;
}
-
+
+ bool isUndef() const {
+ assert(isReg() && "Wrong MachineOperand accessor");
+ return IsUndef;
+ }
+
bool isEarlyClobber() const {
assert(isReg() && "Wrong MachineOperand accessor");
return IsEarlyClobber;
}
+ bool isDebug() const {
+ assert(isReg() && "Wrong MachineOperand accessor");
+ return IsDebug;
+ }
+
/// getNextOperandForReg - Return the next MachineOperand in the function that
/// uses or defines this register.
MachineOperand *getNextOperandForReg() const {
//===--------------------------------------------------------------------===//
// Mutators for Register Operands
//===--------------------------------------------------------------------===//
-
+
/// Change the register this operand corresponds to.
///
void setReg(unsigned Reg);
-
+
void setSubReg(unsigned subReg) {
assert(isReg() && "Wrong MachineOperand accessor");
SubReg = (unsigned char)subReg;
}
-
+
+ /// substVirtReg - Substitute the current register with the virtual
+ /// subregister Reg:SubReg. Take any existing SubReg index into account,
+ /// using TargetRegisterInfo to compose the subreg indices if necessary.
+ /// Reg must be a virtual register, SubIdx can be 0.
+ ///
+ void substVirtReg(unsigned Reg, unsigned SubIdx, const TargetRegisterInfo&);
+
+ /// substPhysReg - Substitute the current register with the physical register
+ /// Reg, taking any existing SubReg into account. For instance,
+ /// substPhysReg(%EAX) will change %reg1024:sub_8bit to %AL.
+ ///
+ void substPhysReg(unsigned Reg, const TargetRegisterInfo&);
+
void setIsUse(bool Val = true) {
assert(isReg() && "Wrong MachineOperand accessor");
+ assert((Val || !isDebug()) && "Marking a debug operation as def");
IsDef = !Val;
}
-
+
void setIsDef(bool Val = true) {
assert(isReg() && "Wrong MachineOperand accessor");
+ assert((!Val || !isDebug()) && "Marking a debug operation as def");
IsDef = Val;
}
- void setImplicit(bool Val = true) {
+ void setImplicit(bool Val = true) {
assert(isReg() && "Wrong MachineOperand accessor");
IsImp = Val;
}
void setIsKill(bool Val = true) {
assert(isReg() && !IsDef && "Wrong MachineOperand accessor");
+ assert((!Val || !isDebug()) && "Marking a debug operation as kill");
IsKill = Val;
}
-
+
void setIsDead(bool Val = true) {
assert(isReg() && IsDef && "Wrong MachineOperand accessor");
IsDead = Val;
}
+ void setIsUndef(bool Val = true) {
+ assert(isReg() && "Wrong MachineOperand accessor");
+ IsUndef = Val;
+ }
+
void setIsEarlyClobber(bool Val = true) {
assert(isReg() && IsDef && "Wrong MachineOperand accessor");
IsEarlyClobber = Val;
}
+ void setIsDebug(bool Val = true) {
+ assert(isReg() && IsDef && "Wrong MachineOperand accessor");
+ IsDebug = Val;
+ }
+
//===--------------------------------------------------------------------===//
// Accessors for various operand types.
//===--------------------------------------------------------------------===//
-
+
int64_t getImm() const {
assert(isImm() && "Wrong MachineOperand accessor");
return Contents.ImmVal;
}
-
+
const ConstantFP *getFPImm() const {
assert(isFPImm() && "Wrong MachineOperand accessor");
return Contents.CFP;
}
-
+
MachineBasicBlock *getMBB() const {
assert(isMBB() && "Wrong MachineOperand accessor");
return Contents.MBB;
"Wrong MachineOperand accessor");
return Contents.OffsetedInfo.Val.Index;
}
-
- GlobalValue *getGlobal() const {
+
+ const GlobalValue *getGlobal() const {
assert(isGlobal() && "Wrong MachineOperand accessor");
return Contents.OffsetedInfo.Val.GV;
}
-
+
+ const BlockAddress *getBlockAddress() const {
+ assert(isBlockAddress() && "Wrong MachineOperand accessor");
+ return Contents.OffsetedInfo.Val.BA;
+ }
+
+ MCSymbol *getMCSymbol() const {
+ assert(isMCSymbol() && "Wrong MachineOperand accessor");
+ return Contents.Sym;
+ }
+
+ /// getOffset - Return the offset from the symbol in this operand. This always
+ /// returns 0 for ExternalSymbol operands.
int64_t getOffset() const {
- assert((isGlobal() || isSymbol() || isCPI()) &&
+ assert((isGlobal() || isSymbol() || isCPI() || isBlockAddress()) &&
"Wrong MachineOperand accessor");
return Contents.OffsetedInfo.Offset;
}
-
+
const char *getSymbolName() const {
assert(isSymbol() && "Wrong MachineOperand accessor");
return Contents.OffsetedInfo.Val.SymbolName;
}
-
+
+ const MDNode *getMetadata() const {
+ assert(isMetadata() && "Wrong MachineOperand accessor");
+ return Contents.MD;
+ }
+
//===--------------------------------------------------------------------===//
// Mutators for various operand types.
//===--------------------------------------------------------------------===//
-
+
void setImm(int64_t immVal) {
assert(isImm() && "Wrong MachineOperand mutator");
Contents.ImmVal = immVal;
}
void setOffset(int64_t Offset) {
- assert((isGlobal() || isSymbol() || isCPI()) &&
+ assert((isGlobal() || isSymbol() || isCPI() || isBlockAddress()) &&
"Wrong MachineOperand accessor");
Contents.OffsetedInfo.Offset = Offset;
}
-
+
void setIndex(int Idx) {
assert((isFI() || isCPI() || isJTI()) &&
"Wrong MachineOperand accessor");
Contents.OffsetedInfo.Val.Index = Idx;
}
-
+
void setMBB(MachineBasicBlock *MBB) {
assert(isMBB() && "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);
-
+ bool isKill = false, bool isDead = false,
+ bool isUndef = false, bool isDebug = false);
+
//===--------------------------------------------------------------------===//
// Construction methods.
//===--------------------------------------------------------------------===//
-
+
static MachineOperand CreateImm(int64_t Val) {
MachineOperand Op(MachineOperand::MO_Immediate);
Op.setImm(Val);
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,
+ bool isUndef = false,
+ bool isEarlyClobber = false,
unsigned SubReg = 0,
- bool isEarlyClobber = false) {
+ bool isDebug = false) {
MachineOperand Op(MachineOperand::MO_Register);
Op.IsDef = isDef;
Op.IsImp = isImp;
Op.IsKill = isKill;
Op.IsDead = isDead;
+ Op.IsUndef = isUndef;
Op.IsEarlyClobber = isEarlyClobber;
+ Op.IsDebug = isDebug;
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) {
+ static MachineOperand CreateMBB(MachineBasicBlock *MBB,
+ unsigned char TargetFlags = 0) {
MachineOperand Op(MachineOperand::MO_MachineBasicBlock);
Op.setMBB(MBB);
+ Op.setTargetFlags(TargetFlags);
return Op;
}
static MachineOperand CreateFI(unsigned Idx) {
Op.setIndex(Idx);
return Op;
}
- static MachineOperand CreateCPI(unsigned Idx, int Offset) {
+ static MachineOperand CreateCPI(unsigned Idx, int Offset,
+ unsigned char TargetFlags = 0) {
MachineOperand Op(MachineOperand::MO_ConstantPoolIndex);
Op.setIndex(Idx);
Op.setOffset(Offset);
+ Op.setTargetFlags(TargetFlags);
return Op;
}
- static MachineOperand CreateJTI(unsigned Idx) {
+ static MachineOperand CreateJTI(unsigned Idx,
+ unsigned char TargetFlags = 0) {
MachineOperand Op(MachineOperand::MO_JumpTableIndex);
Op.setIndex(Idx);
+ Op.setTargetFlags(TargetFlags);
return Op;
}
- static MachineOperand CreateGA(GlobalValue *GV, int64_t Offset) {
+ static MachineOperand CreateGA(const GlobalValue *GV, int64_t Offset,
+ unsigned char TargetFlags = 0) {
MachineOperand Op(MachineOperand::MO_GlobalAddress);
Op.Contents.OffsetedInfo.Val.GV = GV;
Op.setOffset(Offset);
+ Op.setTargetFlags(TargetFlags);
return Op;
}
- static MachineOperand CreateES(const char *SymName, int64_t Offset = 0) {
+ static MachineOperand CreateES(const char *SymName,
+ unsigned char TargetFlags = 0) {
MachineOperand Op(MachineOperand::MO_ExternalSymbol);
Op.Contents.OffsetedInfo.Val.SymbolName = SymName;
- Op.setOffset(Offset);
+ Op.setOffset(0); // Offset is always 0.
+ Op.setTargetFlags(TargetFlags);
+ return Op;
+ }
+ static MachineOperand CreateBA(const BlockAddress *BA,
+ unsigned char TargetFlags = 0) {
+ MachineOperand Op(MachineOperand::MO_BlockAddress);
+ Op.Contents.OffsetedInfo.Val.BA = BA;
+ Op.setOffset(0); // Offset is always 0.
+ Op.setTargetFlags(TargetFlags);
+ return Op;
+ }
+ static MachineOperand CreateMetadata(const MDNode *Meta) {
+ MachineOperand Op(MachineOperand::MO_Metadata);
+ Op.Contents.MD = Meta;
return Op;
}
- const MachineOperand &operator=(const MachineOperand &MO) {
- OpKind = MO.OpKind;
- IsDef = MO.IsDef;
- IsImp = MO.IsImp;
- IsKill = MO.IsKill;
- IsDead = MO.IsDead;
- IsEarlyClobber = MO.IsEarlyClobber;
- SubReg = MO.SubReg;
- ParentMI = MO.ParentMI;
- Contents = MO.Contents;
- return *this;
+
+ static MachineOperand CreateMCSymbol(MCSymbol *Sym) {
+ MachineOperand Op(MachineOperand::MO_MCSymbol);
+ Op.Contents.Sym = Sym;
+ return Op;
}
friend class MachineInstr;
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;
- }
+ /// RemoveRegOperandFromRegInfo - Remove this register operand from the
+ /// MachineRegisterInfo it is linked with.
+ void RemoveRegOperandFromRegInfo();
};
-inline std::ostream &operator<<(std::ostream &OS, const MachineOperand &MO) {
- MO.print(OS, 0);
- return OS;
-}
-
inline raw_ostream &operator<<(raw_ostream &OS, const MachineOperand& MO) {
MO.print(OS, 0);
return OS;
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