//===-- llvm/CodeGen/MachineInstr.h - MachineInstr class --------*- C++ -*-===//
-//
+//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
-//
+//
//===----------------------------------------------------------------------===//
//
// This file contains the declaration of the MachineInstr class, which is the
#ifndef LLVM_CODEGEN_MACHINEINSTR_H
#define LLVM_CODEGEN_MACHINEINSTR_H
-#include "Support/Annotation.h"
-#include "Support/iterator"
+#include "llvm/ADT/iterator"
+#include "llvm/Support/DataTypes.h"
#include <vector>
+#include <cassert>
namespace llvm {
class TargetMachine;
class GlobalValue;
-template <typename T> class ilist_traits;
-
-typedef int MachineOpCode;
+template <typename T> struct ilist_traits;
+template <typename T> struct ilist;
-//===----------------------------------------------------------------------===//
-/// MOTy - MachineOperandType - This namespace contains an enum that describes
-/// how the machine operand is used by the instruction: is it read, defined, or
-/// both? Note that the MachineInstr/Operator class currently uses bool
-/// arguments to represent this information instead of an enum. Eventually this
-/// should change over to use this _easier to read_ representation instead.
-///
-namespace MOTy {
- enum UseType {
- Use, /// This machine operand is only read by the instruction
- Def, /// This machine operand is only written by the instruction
- UseAndDef /// This machine operand is read AND written
- };
-}
+typedef short MachineOpCode;
//===----------------------------------------------------------------------===//
-// class MachineOperand
-//
+// class MachineOperand
+//
// Purpose:
// Representation of each machine instruction operand.
// This class is designed so that you can allocate a vector of operands
// first and initialize each one later.
//
// E.g, for this VM instruction:
-// ptr = alloca type, numElements
+// ptr = alloca type, numElements
// we generate 2 machine instructions on the SPARC:
-//
-// mul Constant, Numelements -> Reg
-// add %sp, Reg -> Ptr
-//
+//
+// mul Constant, Numelements -> Reg
+// add %sp, Reg -> Ptr
+//
// Each instruction has 3 operands, listed above. Of those:
-// - Reg, NumElements, and Ptr are of operand type MO_Register.
-// - Constant is of operand type MO_SignExtendedImmed on the SPARC.
-//
+// - Reg, NumElements, and Ptr are of operand type MO_Register.
+// - Constant is of operand type MO_SignExtendedImmed on the SPARC.
+//
// For the register operands, the virtual register type is as follows:
-//
-// - Reg will be of virtual register type MO_MInstrVirtualReg. The field
-// MachineInstr* minstr will point to the instruction that computes reg.
-//
-// - %sp will be of virtual register type MO_MachineReg.
-// The field regNum identifies the machine register.
-//
-// - NumElements will be of virtual register type MO_VirtualReg.
-// The field Value* value identifies the value.
-//
-// - Ptr will also be of virtual register type MO_VirtualReg.
-// Again, the field Value* value identifies the value.
-//
+//
+// - Reg will be of virtual register type MO_MInstrVirtualReg. The field
+// MachineInstr* minstr will point to the instruction that computes reg.
+//
+// - %sp will be of virtual register type MO_MachineReg.
+// The field regNum identifies the machine register.
+//
+// - NumElements will be of virtual register type MO_VirtualReg.
+// The field Value* value identifies the value.
+//
+// - Ptr will also be of virtual register type MO_VirtualReg.
+// Again, the field Value* value identifies the value.
+//
//===----------------------------------------------------------------------===//
struct MachineOperand {
- enum MachineOperandType {
- MO_VirtualRegister, // virtual register for *value
- MO_MachineRegister, // pre-assigned machine register `regNum'
- MO_CCRegister,
- MO_SignExtendedImmed,
- MO_UnextendedImmed,
- MO_PCRelativeDisp,
- MO_MachineBasicBlock, // MachineBasicBlock reference
- MO_FrameIndex, // Abstract Stack Frame Index
- MO_ConstantPoolIndex, // Address of indexed Constant in Constant Pool
- MO_ExternalSymbol, // Name of external global symbol
- MO_GlobalAddress, // Address of a global value
- };
-
private:
// Bit fields of the flags variable used for different operand properties
enum {
LOFLAG32 = 0x08, // operand is %lo32(value_or_immedVal)
HIFLAG64 = 0x10, // operand is %hi64(value_or_immedVal)
LOFLAG64 = 0x20, // operand is %lo64(value_or_immedVal)
- PCRELATIVE = 0x40, // Operand is relative to PC, not a global address
+ PCRELATIVE = 0x40 // Operand is relative to PC, not a global address
+ };
+
+public:
+ // UseType - This enum describes how the machine operand is used by
+ // the instruction. Note that the MachineInstr/Operator class
+ // currently uses bool arguments to represent this information
+ // instead of an enum. Eventually this should change over to use
+ // this _easier to read_ representation instead.
+ //
+ enum UseType {
+ Use = USEFLAG, /// only read
+ Def = DEFFLAG, /// only written
+ UseAndDef = Use | Def /// read AND written
+ };
+
+ enum MachineOperandType {
+ MO_VirtualRegister, // virtual register for *value
+ MO_MachineRegister, // pre-assigned machine register `regNum'
+ MO_SignExtendedImmed,
+ MO_UnextendedImmed,
+ 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:
union {
- Value* value; // BasicBlockVal for a label operand.
- // ConstantVal for a non-address immediate.
- // Virtual register for an SSA operand,
- // including hidden operands required for
- // the generated machine code.
- // LLVM global for MO_GlobalAddress.
+ Value* value; // BasicBlockVal for a label operand.
+ // ConstantVal for a non-address immediate.
+ // Virtual register for an SSA operand,
+ // including hidden operands required for
+ // the generated machine code.
+ // LLVM global for MO_GlobalAddress.
- int64_t immedVal; // Constant value for an explicit constant
+ int64_t immedVal; // Constant value for an explicit constant
MachineBasicBlock *MBB; // For MO_MachineBasicBlock type
- std::string *SymbolName; // For MO_ExternalSymbol type
- };
+ const char *SymbolName; // For MO_ExternalSymbol type
+ } contents;
char flags; // see bit field definitions above
MachineOperandType opType:8; // Pack into 8 bits efficiently after flags.
- int regNum; // register number for an explicit register
+ union {
+ int regNum; // register number for an explicit register
// will be set for a value after reg allocation
-private:
- MachineOperand(int64_t ImmVal = 0, MachineOperandType OpTy = MO_VirtualRegister)
- : immedVal(ImmVal),
- flags(0),
- opType(OpTy),
- regNum(-1) {}
-
- MachineOperand(int Reg, MachineOperandType OpTy, MOTy::UseType UseTy)
- : immedVal(0),
- opType(OpTy),
- regNum(Reg) {
- switch (UseTy) {
- case MOTy::Use: flags = USEFLAG; break;
- case MOTy::Def: flags = DEFFLAG; break;
- case MOTy::UseAndDef: flags = DEFFLAG | USEFLAG; break;
- default: assert(0 && "Invalid value for UseTy!");
- }
- }
-
- MachineOperand(Value *V, MachineOperandType OpTy, MOTy::UseType UseTy,
- bool isPCRelative = false)
- : value(V), opType(OpTy), regNum(-1) {
- switch (UseTy) {
- case MOTy::Use: flags = USEFLAG; break;
- case MOTy::Def: flags = DEFFLAG; break;
- case MOTy::UseAndDef: flags = DEFFLAG | USEFLAG; break;
- default: assert(0 && "Invalid value for UseTy!");
- }
- if (isPCRelative) flags |= PCRELATIVE;
+
+ int offset; // Offset to address of global or external, only
+ // valid for MO_GlobalAddress, MO_ExternalSym
+ // and MO_ConstantPoolIndex
+ } extra;
+
+ void zeroContents () {
+ memset (&contents, 0, sizeof (contents));
+ memset (&extra, 0, sizeof (extra));
+ }
+
+ MachineOperand(int64_t ImmVal = 0,
+ MachineOperandType OpTy = MO_VirtualRegister, int Offset = 0)
+ : flags(0), opType(OpTy) {
+ zeroContents ();
+ contents.immedVal = ImmVal;
+ if (OpTy == MachineOperand::MO_ConstantPoolIndex)
+ extra.offset = Offset;
+ else
+ extra.regNum = -1;
+ }
+
+ MachineOperand(int Reg, MachineOperandType OpTy, UseType UseTy)
+ : flags(UseTy), opType(OpTy) {
+ zeroContents ();
+ extra.regNum = Reg;
+ }
+
+ MachineOperand(Value *V, MachineOperandType OpTy, UseType UseTy,
+ bool isPCRelative = false)
+ : flags(UseTy | (isPCRelative?PCRELATIVE:0)), opType(OpTy) {
+ assert(OpTy != MachineOperand::MO_GlobalAddress);
+ zeroContents();
+ contents.value = V;
+ extra.regNum = -1;
+ }
+
+ MachineOperand(GlobalValue *V, MachineOperandType OpTy, UseType UseTy,
+ bool isPCRelative = false, int Offset = 0)
+ : flags(UseTy | (isPCRelative?PCRELATIVE:0)), opType(OpTy) {
+ assert(OpTy == MachineOperand::MO_GlobalAddress);
+ zeroContents ();
+ contents.value = (Value*)V;
+ extra.offset = Offset;
}
MachineOperand(MachineBasicBlock *mbb)
- : MBB(mbb), flags(0), opType(MO_MachineBasicBlock), regNum(-1) {}
+ : flags(0), opType(MO_MachineBasicBlock) {
+ zeroContents ();
+ contents.MBB = mbb;
+ extra.regNum = -1;
+ }
- MachineOperand(const std::string &SymName, bool isPCRelative)
- : SymbolName(new std::string(SymName)), flags(isPCRelative ? PCRELATIVE :0),
- opType(MO_ExternalSymbol), regNum(-1) {}
+ MachineOperand(const char *SymName, bool isPCRelative, int Offset)
+ : flags(isPCRelative?PCRELATIVE:0), opType(MO_ExternalSymbol) {
+ zeroContents ();
+ contents.SymbolName = SymName;
+ extra.offset = Offset;
+ }
public:
- MachineOperand(const MachineOperand &M) : immedVal(M.immedVal),
- flags(M.flags),
- opType(M.opType),
- regNum(M.regNum) {
- if (isExternalSymbol())
- SymbolName = new std::string(M.getSymbolName());
+ MachineOperand(const MachineOperand &M)
+ : flags(M.flags), opType(M.opType) {
+ zeroContents ();
+ contents = M.contents;
+ extra = M.extra;
}
- ~MachineOperand() {
- if (isExternalSymbol())
- delete SymbolName;
- }
-
+
+ ~MachineOperand() {}
+
const MachineOperand &operator=(const MachineOperand &MO) {
- if (isExternalSymbol()) // if old operand had a symbol name,
- delete SymbolName; // release old memory
- immedVal = MO.immedVal;
+ contents = MO.contents;
flags = MO.flags;
opType = MO.opType;
- regNum = MO.regNum;
- if (isExternalSymbol())
- SymbolName = new std::string(MO.getSymbolName());
+ extra = MO.extra;
return *this;
}
/// getType - Returns the MachineOperandType for this operand.
- ///
+ ///
MachineOperandType getType() const { return opType; }
+ /// getUseType - Returns the MachineOperandUseType of this operand.
+ ///
+ UseType getUseType() const { return UseType(flags & (USEFLAG|DEFFLAG)); }
+
/// isPCRelative - This returns the value of the PCRELATIVE flag, which
/// indicates whether this operand should be emitted as a PC relative value
/// instead of a global address. This is used for operands of the forms:
return opType == MO_MachineRegister || opType == MO_VirtualRegister;
}
+ /// Accessors that tell you what kind of MachineOperand you're looking at.
+ ///
bool isMachineBasicBlock() const { return opType == MO_MachineBasicBlock; }
- bool isPCRelativeDisp() const { return opType == MO_PCRelativeDisp; }
bool isImmediate() const {
return opType == MO_SignExtendedImmed || opType == MO_UnextendedImmed;
}
bool isFrameIndex() const { return opType == MO_FrameIndex; }
bool isConstantPoolIndex() const { return opType == MO_ConstantPoolIndex; }
+ bool isJumpTableIndex() const { return opType == MO_JumpTableIndex; }
bool isGlobalAddress() const { return opType == MO_GlobalAddress; }
bool isExternalSymbol() const { return opType == MO_ExternalSymbol; }
- Value* getVRegValue() const {
- assert(opType == MO_VirtualRegister || opType == MO_CCRegister ||
- isPCRelativeDisp());
- return value;
- }
+ /// getVRegValueOrNull - Get the Value* out of a MachineOperand if it
+ /// has one. This is deprecated and only used by the SPARC v9 backend.
+ ///
Value* getVRegValueOrNull() const {
- return (opType == MO_VirtualRegister || opType == MO_CCRegister ||
- isPCRelativeDisp()) ? value : NULL;
+ return opType == MO_VirtualRegister ? contents.value : NULL;
+ }
+
+ /// MachineOperand accessors that only work on certain types of
+ /// MachineOperand...
+ ///
+ Value* getVRegValue() const {
+ assert(opType == MO_VirtualRegister && "Wrong MachineOperand accessor");
+ return contents.value;
}
int getMachineRegNum() const {
- assert(opType == MO_MachineRegister);
- return regNum;
+ assert(opType == MO_MachineRegister && "Wrong MachineOperand accessor");
+ return extra.regNum;
+ }
+ int64_t getImmedValue() const {
+ assert(isImmediate() && "Wrong MachineOperand accessor");
+ return contents.immedVal;
}
- int64_t getImmedValue() const { assert(isImmediate()); return immedVal; }
- void setImmedValue(int64_t ImmVal) { assert(isImmediate()); immedVal=ImmVal; }
-
MachineBasicBlock *getMachineBasicBlock() const {
- assert(isMachineBasicBlock() && "Can't get MBB in non-MBB operand!");
- return MBB;
+ assert(isMachineBasicBlock() && "Wrong MachineOperand accessor");
+ return contents.MBB;
+ }
+ void setMachineBasicBlock(MachineBasicBlock *MBB) {
+ assert(isMachineBasicBlock() && "Wrong MachineOperand accessor");
+ contents.MBB = MBB;
+ }
+ int getFrameIndex() const {
+ assert(isFrameIndex() && "Wrong MachineOperand accessor");
+ return (int)contents.immedVal;
}
- int getFrameIndex() const { assert(isFrameIndex()); return immedVal; }
unsigned getConstantPoolIndex() const {
- assert(isConstantPoolIndex());
- return immedVal;
+ assert(isConstantPoolIndex() && "Wrong MachineOperand accessor");
+ return (unsigned)contents.immedVal;
+ }
+ unsigned getJumpTableIndex() const {
+ assert(isJumpTableIndex() && "Wrong MachineOperand accessor");
+ return (unsigned)contents.immedVal;
}
-
GlobalValue *getGlobal() const {
- assert(isGlobalAddress());
- return (GlobalValue*)value;
+ assert(isGlobalAddress() && "Wrong MachineOperand accessor");
+ return (GlobalValue*)contents.value;
}
-
- const std::string &getSymbolName() const {
- assert(isExternalSymbol());
- return *SymbolName;
+ int getOffset() const {
+ assert((isGlobalAddress() || isExternalSymbol() || isConstantPoolIndex()) &&
+ "Wrong MachineOperand accessor");
+ return extra.offset;
+ }
+ const char *getSymbolName() const {
+ assert(isExternalSymbol() && "Wrong MachineOperand accessor");
+ return contents.SymbolName;
}
+ /// MachineOperand methods for testing that work on any kind of
+ /// MachineOperand...
+ ///
bool isUse () const { return flags & USEFLAG; }
MachineOperand& setUse () { flags |= USEFLAG; return *this; }
- bool isDef () const { return flags & DEFFLAG; }
+ bool isDef () const { return flags & DEFFLAG; }
MachineOperand& setDef () { flags |= DEFFLAG; return *this; }
bool isHiBits32 () const { return flags & HIFLAG32; }
bool isLoBits32 () const { return flags & LOFLAG32; }
bool isHiBits64 () const { return flags & HIFLAG64; }
bool isLoBits64 () const { return flags & LOFLAG64; }
- // used to check if a machine register has been allocated to this operand
+ /// hasAllocatedReg - Returns true iff a machine register has been
+ /// allocated to this operand.
+ ///
bool hasAllocatedReg() const {
- return (regNum >= 0 &&
- (opType == MO_VirtualRegister || opType == MO_CCRegister ||
- opType == MO_MachineRegister));
+ return (extra.regNum >= 0 &&
+ (opType == MO_VirtualRegister || opType == MO_MachineRegister));
}
- // used to get the reg number if when one is allocated
- int getAllocatedRegNum() const {
+ /// getReg - Returns the register number. It is a runtime error to call this
+ /// if a register is not allocated.
+ ///
+ unsigned getReg() const {
assert(hasAllocatedReg());
- return regNum;
+ return extra.regNum;
}
- // ********** TODO: get rid of this duplicate code! ***********
- unsigned getReg() const {
- return getAllocatedRegNum();
- }
+ /// MachineOperand mutators...
+ ///
void setReg(unsigned Reg) {
+ // This method's comment used to say: 'TODO: get rid of this duplicate
+ // code.' It's not clear where the duplication is.
assert(hasAllocatedReg() && "This operand cannot have a register number!");
- regNum = Reg;
- }
+ extra.regNum = Reg;
+ }
- friend std::ostream& operator<<(std::ostream& os, const MachineOperand& mop);
+ void setValueReg(Value *val) {
+ assert(getVRegValueOrNull() != 0 && "Original operand must of type Value*");
+ contents.value = val;
+ }
-private:
+ void setImmedValue(int immVal) {
+ assert(isImmediate() && "Wrong MachineOperand mutator");
+ contents.immedVal = immVal;
+ }
- // Construction methods needed for fine-grain control.
- // These must be accessed via coresponding methods in MachineInstr.
- void markHi32() { flags |= HIFLAG32; }
- void markLo32() { flags |= LOFLAG32; }
- void markHi64() { flags |= HIFLAG64; }
- void markLo64() { flags |= LOFLAG64; }
-
- // Replaces the Value with its corresponding physical register after
- // register allocation is complete
- void setRegForValue(int reg) {
- assert(opType == MO_VirtualRegister || opType == MO_CCRegister ||
- opType == MO_MachineRegister);
- regNum = reg;
+ void setOffset(int Offset) {
+ assert((isGlobalAddress() || isExternalSymbol() || isConstantPoolIndex() ||
+ isJumpTableIndex()) &&
+ "Wrong MachineOperand accessor");
+ extra.offset = Offset;
}
-
+
+ friend std::ostream& operator<<(std::ostream& os, const MachineOperand& mop);
+
friend class MachineInstr;
};
//===----------------------------------------------------------------------===//
-// class MachineInstr
-//
+// class MachineInstr
+//
// Purpose:
// Representation of each machine instruction.
-//
+//
// MachineOpCode must be an enum, defined separately for each target.
// E.g., It is defined in SparcInstructionSelection.h for the SPARC.
-//
+//
// There are 2 kinds of operands:
-//
-// (1) Explicit operands of the machine instruction in vector operands[]
-//
+//
+// (1) Explicit operands of the machine instruction in vector operands[]
+//
// (2) "Implicit operands" are values implicitly used or defined by the
// machine instruction, such as arguments to a CALL, return value of
// a CALL (if any), and return value of a RETURN.
//===----------------------------------------------------------------------===//
class MachineInstr {
- int Opcode; // the opcode
+ short Opcode; // the opcode
std::vector<MachineOperand> operands; // the operands
- unsigned numImplicitRefs; // number of implicit operands
MachineInstr* prev, *next; // links for our intrusive list
+ MachineBasicBlock* parent; // pointer to the owning basic block
+
// OperandComplete - Return true if it's illegal to add a new operand
bool OperandsComplete() const;
- MachineInstr(const MachineInstr &); // DO NOT IMPLEMENT
+ //Constructor used by clone() method
+ MachineInstr(const MachineInstr&);
+
void operator=(const MachineInstr&); // DO NOT IMPLEMENT
-private:
// Intrusive list support
//
- friend class ilist_traits<MachineInstr>;
- MachineInstr() { /* this is for ilist use only to create the sentinel */ }
- MachineInstr* getPrev() const { return prev; }
- MachineInstr* getNext() const { return next; }
-
- void setPrev(MachineInstr* mi) { prev = mi; }
- void setNext(MachineInstr* mi) { next = mi; }
+ friend struct ilist_traits<MachineInstr>;
public:
- MachineInstr(int Opcode, unsigned numOperands);
+ MachineInstr(short Opcode, unsigned numOperands);
/// MachineInstr ctor - This constructor only does a _reserve_ of the
/// operands, not a resize for them. It is expected that if you use this that
/// you call add* methods below to fill up the operands, instead of the Set
/// methods. Eventually, the "resizing" ctors will be phased out.
///
- MachineInstr(int Opcode, unsigned numOperands, bool XX, bool YY);
+ MachineInstr(short Opcode, unsigned numOperands, bool XX, bool YY);
/// MachineInstr ctor - Work exactly the same as the ctor above, except that
/// the MachineInstr is created and added to the end of the specified basic
/// block.
///
- MachineInstr(MachineBasicBlock *MBB, int Opcode, unsigned numOps);
-
- /// Accessors for opcode.
+ MachineInstr(MachineBasicBlock *MBB, short Opcode, unsigned numOps);
+
+ ~MachineInstr();
+
+ const MachineBasicBlock* getParent() const { return parent; }
+ MachineBasicBlock* getParent() { return parent; }
+
+ /// getOpcode - Returns the opcode of this MachineInstr.
///
const int getOpcode() const { return Opcode; }
/// Access to explicit operands of the instruction.
///
- unsigned getNumOperands() const { return operands.size() - numImplicitRefs; }
-
+ unsigned getNumOperands() const { return operands.size(); }
+
const MachineOperand& getOperand(unsigned i) const {
assert(i < getNumOperands() && "getOperand() out of range!");
return operands[i];
return operands[i];
}
- //
- // Access to explicit or implicit operands of the instruction
- // This returns the i'th entry in the operand vector.
- // That represents the i'th explicit operand or the (i-N)'th implicit operand,
- // depending on whether i < N or i >= N.
- //
- const MachineOperand& getExplOrImplOperand(unsigned i) const {
- assert(i < operands.size() && "getExplOrImplOperand() out of range!");
- return (i < getNumOperands()? getOperand(i)
- : getImplicitOp(i - getNumOperands()));
- }
- //
- // Access to implicit operands of the instruction
- //
- unsigned getNumImplicitRefs() const{ return numImplicitRefs; }
+ /// clone - Create a copy of 'this' instruction that is identical in
+ /// all ways except the the instruction has no parent, prev, or next.
+ MachineInstr* clone() const;
- MachineOperand& getImplicitOp(unsigned i) {
- assert(i < numImplicitRefs && "implicit ref# out of range!");
- return operands[i + operands.size() - numImplicitRefs];
- }
- const MachineOperand& getImplicitOp(unsigned i) const {
- assert(i < numImplicitRefs && "implicit ref# out of range!");
- return operands[i + operands.size() - numImplicitRefs];
- }
-
- Value* getImplicitRef(unsigned i) {
- return getImplicitOp(i).getVRegValue();
- }
- const Value* getImplicitRef(unsigned i) const {
- return getImplicitOp(i).getVRegValue();
- }
-
- void addImplicitRef(Value* V, bool isDef = false, bool isDefAndUse = false) {
- ++numImplicitRefs;
- addRegOperand(V, isDef, isDefAndUse);
- }
- void setImplicitRef(unsigned i, Value* V) {
- assert(i < getNumImplicitRefs() && "setImplicitRef() out of range!");
- SetMachineOperandVal(i + getNumOperands(),
- MachineOperand::MO_VirtualRegister, V);
+ /// removeFromParent - This method unlinks 'this' from the containing basic
+ /// block, and returns it, but does not delete it.
+ MachineInstr *removeFromParent();
+
+ /// eraseFromParent - This method unlinks 'this' from the containing basic
+ /// block and deletes it.
+ void eraseFromParent() {
+ delete removeFromParent();
}
//
// Debugging support
//
- void print(std::ostream &OS, const TargetMachine &TM) const;
+ void print(std::ostream &OS, const TargetMachine *TM) const;
void dump() const;
friend std::ostream& operator<<(std::ostream& os, const MachineInstr& minstr);
- //
- // Define iterators to access the Value operands of the Machine Instruction.
- // Note that these iterators only enumerate the explicit operands.
- // begin() and end() are defined to produce these iterators...
- //
- template<class _MI, class _V> class ValOpIterator;
- typedef ValOpIterator<const MachineInstr*,const Value*> const_val_op_iterator;
- typedef ValOpIterator< MachineInstr*, Value*> val_op_iterator;
-
-
//===--------------------------------------------------------------------===//
// Accessors to add operands when building up machine instructions
//
void addRegOperand(Value *V, bool isDef, bool isDefAndUse=false) {
assert(!OperandsComplete() &&
"Trying to add an operand to a machine instr that is already done!");
- operands.push_back(MachineOperand(V, MachineOperand::MO_VirtualRegister,
- !isDef ? MOTy::Use : (isDefAndUse ? MOTy::UseAndDef : MOTy::Def)));
+ operands.push_back(
+ MachineOperand(V, MachineOperand::MO_VirtualRegister,
+ !isDef ? MachineOperand::Use :
+ (isDefAndUse ? MachineOperand::UseAndDef :
+ MachineOperand::Def)));
}
- void addRegOperand(Value *V, MOTy::UseType UTy = MOTy::Use,
- bool isPCRelative = false) {
+ void addRegOperand(Value *V,
+ MachineOperand::UseType UTy = MachineOperand::Use,
+ bool isPCRelative = false) {
assert(!OperandsComplete() &&
"Trying to add an operand to a machine instr that is already done!");
operands.push_back(MachineOperand(V, MachineOperand::MO_VirtualRegister,
UTy, isPCRelative));
}
- void addCCRegOperand(Value *V, MOTy::UseType UTy = MOTy::Use) {
- assert(!OperandsComplete() &&
- "Trying to add an operand to a machine instr that is already done!");
- operands.push_back(MachineOperand(V, MachineOperand::MO_CCRegister, UTy,
- false));
- }
-
-
/// addRegOperand - Add a symbolic virtual register reference...
///
void addRegOperand(int reg, bool isDef) {
assert(!OperandsComplete() &&
"Trying to add an operand to a machine instr that is already done!");
- operands.push_back(MachineOperand(reg, MachineOperand::MO_VirtualRegister,
- isDef ? MOTy::Def : MOTy::Use));
+ operands.push_back(
+ MachineOperand(reg, MachineOperand::MO_VirtualRegister,
+ isDef ? MachineOperand::Def : MachineOperand::Use));
}
/// addRegOperand - Add a symbolic virtual register reference...
///
- void addRegOperand(int reg, MOTy::UseType UTy = MOTy::Use) {
+ void addRegOperand(int reg,
+ MachineOperand::UseType UTy = MachineOperand::Use) {
assert(!OperandsComplete() &&
"Trying to add an operand to a machine instr that is already done!");
- operands.push_back(MachineOperand(reg, MachineOperand::MO_VirtualRegister,
- UTy));
+ operands.push_back(
+ MachineOperand(reg, MachineOperand::MO_VirtualRegister, UTy));
}
- /// addPCDispOperand - Add a PC relative displacement operand to the MI
+ /// addMachineRegOperand - Add a virtual register operand to this MachineInstr
///
- void addPCDispOperand(Value *V) {
+ void addMachineRegOperand(int reg, bool isDef) {
assert(!OperandsComplete() &&
"Trying to add an operand to a machine instr that is already done!");
- operands.push_back(MachineOperand(V, MachineOperand::MO_PCRelativeDisp,
- MOTy::Use));
+ operands.push_back(
+ MachineOperand(reg, MachineOperand::MO_MachineRegister,
+ isDef ? MachineOperand::Def : MachineOperand::Use));
}
/// addMachineRegOperand - Add a virtual register operand to this MachineInstr
///
- void addMachineRegOperand(int reg, bool isDef) {
+ void addMachineRegOperand(int reg,
+ MachineOperand::UseType UTy = MachineOperand::Use) {
assert(!OperandsComplete() &&
"Trying to add an operand to a machine instr that is already done!");
- operands.push_back(MachineOperand(reg, MachineOperand::MO_MachineRegister,
- isDef ? MOTy::Def : MOTy::Use));
+ operands.push_back(
+ MachineOperand(reg, MachineOperand::MO_MachineRegister, UTy));
}
- /// addMachineRegOperand - Add a virtual register operand to this MachineInstr
+ /// addZeroExtImmOperand - Add a zero extended constant argument to the
+ /// machine instruction.
///
- void addMachineRegOperand(int reg, MOTy::UseType UTy = MOTy::Use) {
+ void addZeroExtImmOperand(int intValue) {
assert(!OperandsComplete() &&
"Trying to add an operand to a machine instr that is already done!");
- operands.push_back(MachineOperand(reg, MachineOperand::MO_MachineRegister,
- UTy));
+ operands.push_back(
+ MachineOperand(intValue, MachineOperand::MO_UnextendedImmed));
}
- /// addZeroExtImmOperand - Add a zero extended constant argument to the
- /// machine instruction.
+ /// addZeroExtImm64Operand - Add a zero extended 64-bit constant argument
+ /// to the machine instruction.
///
- void addZeroExtImmOperand(int64_t intValue) {
+ void addZeroExtImm64Operand(uint64_t intValue) {
assert(!OperandsComplete() &&
"Trying to add an operand to a machine instr that is already done!");
- operands.push_back(MachineOperand(intValue,
- MachineOperand::MO_UnextendedImmed));
+ operands.push_back(
+ MachineOperand(intValue, MachineOperand::MO_UnextendedImmed));
}
/// addSignExtImmOperand - Add a zero extended constant argument to the
/// machine instruction.
///
- void addSignExtImmOperand(int64_t intValue) {
+ void addSignExtImmOperand(int intValue) {
assert(!OperandsComplete() &&
"Trying to add an operand to a machine instr that is already done!");
- operands.push_back(MachineOperand(intValue,
- MachineOperand::MO_SignExtendedImmed));
+ operands.push_back(
+ MachineOperand(intValue, MachineOperand::MO_SignExtendedImmed));
}
void addMachineBasicBlockOperand(MachineBasicBlock *MBB) {
/// addConstantPoolndexOperand - Add a constant pool object index to the
/// instruction.
///
- void addConstantPoolIndexOperand(unsigned I) {
+ void addConstantPoolIndexOperand(unsigned I, int Offset=0) {
assert(!OperandsComplete() &&
"Trying to add an operand to a machine instr that is already done!");
operands.push_back(MachineOperand(I, MachineOperand::MO_ConstantPoolIndex));
}
- void addGlobalAddressOperand(GlobalValue *GV, bool isPCRelative) {
+ /// addJumpTableIndexOperand - Add a jump table object index to the
+ /// instruction.
+ ///
+ void addJumpTableIndexOperand(unsigned I) {
assert(!OperandsComplete() &&
"Trying to add an operand to a machine instr that is already done!");
- operands.push_back(MachineOperand((Value*)GV,
- MachineOperand::MO_GlobalAddress,
- MOTy::Use, isPCRelative));
+ operands.push_back(MachineOperand(I, MachineOperand::MO_JumpTableIndex));
+ }
+
+ void addGlobalAddressOperand(GlobalValue *GV, bool isPCRelative, int Offset) {
+ assert(!OperandsComplete() &&
+ "Trying to add an operand to a machine instr that is already done!");
+ operands.push_back(
+ MachineOperand(GV, MachineOperand::MO_GlobalAddress,
+ MachineOperand::Use, isPCRelative, Offset));
}
/// addExternalSymbolOperand - Add an external symbol operand to this instr
///
- void addExternalSymbolOperand(const std::string &SymName, bool isPCRelative) {
- operands.push_back(MachineOperand(SymName, isPCRelative));
+ void addExternalSymbolOperand(const char *SymName, bool isPCRelative) {
+ operands.push_back(MachineOperand(SymName, isPCRelative, 0));
}
//===--------------------------------------------------------------------===//
//
// FIXME: Move this stuff to MachineOperand itself!
- /// replace - Support to rewrite a machine instruction in place: for now,
- /// simply replace() and then set new operands with Set.*Operand methods
- /// below.
- ///
- void replace(int Opcode, unsigned numOperands);
-
/// setOpcode - Replace the opcode of the current instruction with a new one.
///
void setOpcode(unsigned Op) { Opcode = Op; }
}
// Access to set the operands when building the machine instruction
- //
- void SetMachineOperandVal (unsigned i,
- MachineOperand::MachineOperandType operandType,
- Value* V);
-
- void SetMachineOperandConst (unsigned i,
- MachineOperand::MachineOperandType operandType,
- int64_t intValue);
-
- void SetMachineOperandReg(unsigned i, int regNum);
-
-
- unsigned substituteValue(const Value* oldVal, Value* newVal,
- bool defsOnly, bool notDefsAndUses,
- bool& someArgsWereIgnored);
-
- void setOperandHi32(unsigned i) { operands[i].markHi32(); }
- void setOperandLo32(unsigned i) { operands[i].markLo32(); }
- void setOperandHi64(unsigned i) { operands[i].markHi64(); }
- void setOperandLo64(unsigned i) { operands[i].markLo64(); }
-
-
- // SetRegForOperand -
- // SetRegForImplicitRef -
- // Mark an explicit or implicit operand with its allocated physical register.
- //
- void SetRegForOperand(unsigned i, int regNum);
- void SetRegForImplicitRef(unsigned i, int regNum);
-
//
- // Iterator to enumerate machine operands.
- //
- template<class MITy, class VTy>
- class ValOpIterator : public forward_iterator<VTy, ptrdiff_t> {
- unsigned i;
- MITy MI;
-
- void skipToNextVal() {
- while (i < MI->getNumOperands() &&
- !( (MI->getOperand(i).getType() == MachineOperand::MO_VirtualRegister ||
- MI->getOperand(i).getType() == MachineOperand::MO_CCRegister)
- && MI->getOperand(i).getVRegValue() != 0))
- ++i;
- }
-
- inline ValOpIterator(MITy mi, unsigned I) : i(I), MI(mi) {
- skipToNextVal();
- }
-
- public:
- typedef ValOpIterator<MITy, VTy> _Self;
-
- inline VTy operator*() const {
- return MI->getOperand(i).getVRegValue();
- }
-
- const MachineOperand &getMachineOperand() const { return MI->getOperand(i);}
- MachineOperand &getMachineOperand() { return MI->getOperand(i);}
-
- inline VTy operator->() const { return operator*(); }
-
- inline bool isUse() const { return MI->getOperand(i).isUse(); }
- inline bool isDef() const { return MI->getOperand(i).isDef(); }
-
- inline _Self& operator++() { i++; skipToNextVal(); return *this; }
- inline _Self operator++(int) { _Self tmp = *this; ++*this; return tmp; }
-
- inline bool operator==(const _Self &y) const {
- return i == y.i;
- }
- inline bool operator!=(const _Self &y) const {
- return !operator==(y);
- }
-
- static _Self begin(MITy MI) {
- return _Self(MI, 0);
- }
- static _Self end(MITy MI) {
- return _Self(MI, MI->getNumOperands());
- }
- };
+ void SetMachineOperandVal(unsigned i,
+ MachineOperand::MachineOperandType operandType,
+ Value* V);
- // define begin() and end()
- val_op_iterator begin() { return val_op_iterator::begin(this); }
- val_op_iterator end() { return val_op_iterator::end(this); }
+ void SetMachineOperandConst(unsigned i,
+ MachineOperand::MachineOperandType operandType,
+ int intValue);
- const_val_op_iterator begin() const {
- return const_val_op_iterator::begin(this);
- }
- const_val_op_iterator end() const {
- return const_val_op_iterator::end(this);
- }
+ void SetMachineOperandReg(unsigned i, int regNum);
};
-
//===----------------------------------------------------------------------===//
// Debugging Support
std::ostream& operator<<(std::ostream &OS, const MachineInstr &MI);
std::ostream& operator<<(std::ostream &OS, const MachineOperand &MO);
-void PrintMachineInstructions(const Function *F);
} // End llvm namespace
projects / oota-llvm.git / blobdiff