-//===-- llvm/CodeGen/MachineInstr.h - MachineInstr class ---------*- C++ -*--=//
+//===-- 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
-// basic representation for all target dependant machine instructions used by
+// basic representation for all target dependent machine instructions used by
// the back end.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CODEGEN_MACHINEINSTR_H
#define LLVM_CODEGEN_MACHINEINSTR_H
-#include "llvm/Target/MRegisterInfo.h"
-#include "Support/Annotation.h"
-#include "Support/NonCopyable.h"
-#include "Support/iterator"
+#include "llvm/ADT/iterator"
+#include "llvm/Support/DataTypes.h"
+#include <vector>
+#include <cassert>
+
+namespace llvm {
+
class Value;
class Function;
class MachineBasicBlock;
class TargetMachine;
class GlobalValue;
-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
- };
-}
-
-//---------------------------------------------------------------------------
-// class MachineOperand
-//
-// Purpose:
+//===----------------------------------------------------------------------===//
+// class MachineOperand
+//
// 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
-// we generate 2 machine instructions on the SPARC:
-//
-// 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.
-//
-// 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.
-//
-//---------------------------------------------------------------------------
-
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_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
- };
-
-private:
- // Bit fields of the flags variable used for different operand properties
- enum {
- DEFFLAG = 0x01, // this is a def of the operand
- DEFUSEFLAG = 0x02, // this is both a def and a use
- HIFLAG32 = 0x04, // operand is %hi32(value_or_immedVal)
- 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
-
- USEDEFMASK = 0x03,
+ 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.
-
- int64_t immedVal; // Constant value for an explicit constant
-
- MachineBasicBlock *MBB; // For MO_MachineBasicBlock type
- std::string *SymbolName; // For MO_ExternalSymbol type
- };
-
- 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
- // will be set for a value after reg allocation
-private:
- MachineOperand()
- : immedVal(0),
- flags(0),
- opType(MO_VirtualRegister),
- regNum(-1) {}
-
- MachineOperand(int64_t ImmVal, MachineOperandType OpTy)
- : 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 = 0; break;
- case MOTy::Def: flags = DEFFLAG; break;
- case MOTy::UseAndDef: flags = DEFUSEFLAG; 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 = 0; break;
- case MOTy::Def: flags = DEFFLAG; break;
- case MOTy::UseAndDef: flags = DEFUSEFLAG; break;
- default: assert(0 && "Invalid value for UseTy!");
- }
- if (isPCRelative) flags |= PCRELATIVE;
- }
-
- MachineOperand(MachineBasicBlock *mbb)
- : MBB(mbb), flags(0), opType(MO_MachineBasicBlock), regNum(-1) {}
-
- MachineOperand(const std::string &SymName, bool isPCRelative)
- : SymbolName(new std::string(SymName)), flags(isPCRelative ? PCRELATIVE :0),
- opType(MO_ExternalSymbol), regNum(-1) {}
+ GlobalValue *GV; // For MO_GlobalAddress.
+ MachineBasicBlock *MBB; // For MO_MachineBasicBlock.
+ const char *SymbolName; // For MO_ExternalSymbol.
+ unsigned RegNo; // For MO_Register.
+ int64_t immedVal; // For MO_Immediate and MO_*Index.
+ } contents;
+
+ MachineOperandType opType:8; // Discriminate the union.
+ bool IsDef : 1; // True if this is a def, false if this is a use.
+
+ /// offset - Offset to address of global or external, only valid for
+ /// MO_GlobalAddress, MO_ExternalSym and MO_ConstantPoolIndex
+ int offset;
+ MachineOperand() {}
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) {
+ *this = M;
}
-
- ~MachineOperand() {
- if (isExternalSymbol())
- delete SymbolName;
+
+ ~MachineOperand() {}
+
+ static MachineOperand CreateImm(int64_t Val) {
+ MachineOperand Op;
+ Op.opType = MachineOperand::MO_Immediate;
+ Op.contents.immedVal = Val;
+ Op.IsDef = false;
+ Op.offset = 0;
+ return Op;
}
const MachineOperand &operator=(const MachineOperand &MO) {
- immedVal = MO.immedVal;
- flags = MO.flags;
+ contents = MO.contents;
+ IsDef = MO.IsDef;
opType = MO.opType;
- regNum = MO.regNum;
- if (isExternalSymbol())
- SymbolName = new std::string(MO.getSymbolName());
+ offset = MO.offset;
return *this;
}
- // Accessor methods. Caller is responsible for checking the
- // operand type before invoking the corresponding accessor.
- //
+ /// getType - Returns the MachineOperandType for this operand.
+ ///
MachineOperandType getType() const { return opType; }
- /// 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:
- /// MachineBasicBlock, GlobalAddress, ExternalSymbol
+ /// Accessors that tell you what kind of MachineOperand you're looking at.
///
- bool isPCRelative() const { return (flags & PCRELATIVE) != 0; }
-
-
- // This is to finally stop caring whether we have a virtual or machine
- // register -- an easier interface is to simply call both virtual and machine
- // registers essentially the same, yet be able to distinguish when
- // necessary. Thus the instruction selector can just add registers without
- // abandon, and the register allocator won't be confused.
- bool isVirtualRegister() const {
- return (opType == MO_VirtualRegister || opType == MO_MachineRegister)
- && regNum >= MRegisterInfo::FirstVirtualRegister;
- }
- bool isPhysicalRegister() const {
- return (opType == MO_VirtualRegister || opType == MO_MachineRegister)
- && (unsigned)regNum < MRegisterInfo::FirstVirtualRegister;
- }
- bool isRegister() const { return isVirtualRegister() || isPhysicalRegister();}
- bool isMachineRegister() const { return !isVirtualRegister(); }
+ bool isReg() const { return opType == MO_Register; }
+ bool isImm() const { return opType == MO_Immediate; }
+ bool isMBB() const { return opType == MO_MachineBasicBlock; }
+
+ bool isRegister() const { return opType == MO_Register; }
+ bool isImmediate() const { return opType == MO_Immediate; }
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;
+ int64_t getImm() const {
+ assert(isImm() && "Wrong MachineOperand accessor");
+ return contents.immedVal;
}
- Value* getVRegValueOrNull() const {
- return (opType == MO_VirtualRegister || opType == MO_CCRegister ||
- isPCRelativeDisp()) ? value : NULL;
+
+ int64_t getImmedValue() const {
+ assert(isImm() && "Wrong MachineOperand accessor");
+ return contents.immedVal;
}
- int getMachineRegNum() const {
- assert(opType == MO_MachineRegister);
- return regNum;
+ MachineBasicBlock *getMBB() const {
+ assert(isMachineBasicBlock() && "Wrong MachineOperand accessor");
+ return contents.MBB;
}
- int64_t getImmedValue() const { assert(isImmediate()); return immedVal; }
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 contents.GV;
+ }
+ int getOffset() const {
+ assert((isGlobalAddress() || isExternalSymbol() || isConstantPoolIndex()) &&
+ "Wrong MachineOperand accessor");
+ return offset;
+ }
+ const char *getSymbolName() const {
+ assert(isExternalSymbol() && "Wrong MachineOperand accessor");
+ return contents.SymbolName;
}
- const std::string &getSymbolName() const {
- assert(isExternalSymbol());
- return *SymbolName;
+ bool isUse() const {
+ assert(isRegister() && "Wrong MachineOperand accessor");
+ return !IsDef;
+ }
+ bool isDef() const {
+ assert(isRegister() && "Wrong MachineOperand accessor");
+ return IsDef;
+ }
+ void setIsUse() {
+ assert(isRegister() && "Wrong MachineOperand accessor");
+ IsDef = false;
+ }
+ void setIsDef() {
+ assert(isRegister() && "Wrong MachineOperand accessor");
+ IsDef = true;
}
- bool opIsUse () const { return (flags & USEDEFMASK) == 0; }
- bool opIsDef () const { return flags & DEFFLAG; }
- bool opIsDefAndUse () const { return flags & DEFUSEFLAG; }
- bool opHiBits32 () const { return flags & HIFLAG32; }
- bool opLoBits32 () const { return flags & LOFLAG32; }
- bool opHiBits64 () const { return flags & HIFLAG64; }
- bool opLoBits64 () const { return flags & LOFLAG64; }
+ /// getReg - Returns the register number.
+ ///
+ unsigned getReg() const {
+ assert(isRegister() && "This is not a register operand!");
+ return contents.RegNo;
+ }
- // used to check if a machine register has been allocated to this operand
- bool hasAllocatedReg() const {
- return (regNum >= 0 &&
- (opType == MO_VirtualRegister || opType == MO_CCRegister ||
- opType == MO_MachineRegister));
+ /// MachineOperand mutators.
+ ///
+ void setReg(unsigned Reg) {
+ assert(isRegister() && "This is not a register operand!");
+ contents.RegNo = Reg;
}
- // used to get the reg number if when one is allocated
- int getAllocatedRegNum() const {
- assert(opType == MO_VirtualRegister || opType == MO_CCRegister ||
- opType == MO_MachineRegister);
- return regNum;
+ void setImmedValue(int64_t immVal) {
+ assert(isImm() && "Wrong MachineOperand mutator");
+ contents.immedVal = immVal;
+ }
+ void setImm(int64_t immVal) {
+ assert(isImm() && "Wrong MachineOperand mutator");
+ contents.immedVal = immVal;
}
- unsigned getReg() const {
- assert(hasAllocatedReg() && "Cannot call MachineOperand::getReg()!");
- return regNum;
- }
+ void setOffset(int Offset) {
+ assert((isGlobalAddress() || isExternalSymbol() || isConstantPoolIndex() ||
+ isJumpTableIndex()) &&
+ "Wrong MachineOperand accessor");
+ offset = Offset;
+ }
+ void setConstantPoolIndex(unsigned Idx) {
+ assert(isConstantPoolIndex() && "Wrong MachineOperand accessor");
+ contents.immedVal = Idx;
+ }
- friend std::ostream& operator<<(std::ostream& os, const MachineOperand& mop);
-
-private:
-
- // 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; }
+ /// isIdenticalTo - Return true if this operand is identical to the specified
+ /// operand.
+ bool isIdenticalTo(const MachineOperand &Other) const;
- // 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;
+ /// ChangeToImmediate - Replace this operand with a new immediate operand of
+ /// the specified value. If an operand is known to be an immediate already,
+ /// the setImmedValue method should be used.
+ void ChangeToImmediate(int64_t ImmVal) {
+ opType = MO_Immediate;
+ contents.immedVal = ImmVal;
}
-
- friend 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[]
-//
-// (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.
-//---------------------------------------------------------------------------
+ /// 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) {
+ opType = MO_Register;
+ contents.RegNo = Reg;
+ IsDef = isDef;
+ }
-class MachineInstr: public NonCopyable { // Disable copy operations
+ friend std::ostream& operator<<(std::ostream& os, const MachineOperand& mop);
- MachineOpCode opCode; // the opcode
- std::vector<MachineOperand> operands; // the operands
- unsigned numImplicitRefs; // number of implicit operands
+ friend class MachineInstr;
+};
- 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];
- }
- // regsUsed - all machine registers used for this instruction, including regs
- // used to save values across the instruction. This is a bitset of registers.
- std::vector<bool> regsUsed;
+//===----------------------------------------------------------------------===//
+/// MachineInstr - Representation of each machine instruction.
+///
+class MachineInstr {
+ short Opcode; // the opcode
+ std::vector<MachineOperand> Operands; // the 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;
-public:
- MachineInstr(MachineOpCode Opcode);
- MachineInstr(MachineOpCode Opcode, unsigned numOperands);
+ MachineInstr(const MachineInstr&);
+ void operator=(const MachineInstr&); // DO NOT IMPLEMENT
- /// 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(MachineOpCode Opcode, unsigned numOperands, bool XX, bool YY);
+ // Intrusive list support
+ //
+ friend struct ilist_traits<MachineInstr>;
+
+public:
+ /// MachineInstr ctor - This constructor reserve's space for numOperand
+ /// operands.
+ MachineInstr(short Opcode, unsigned numOperands);
/// 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, MachineOpCode Opcode, unsigned numOps);
-
+ MachineInstr(MachineBasicBlock *MBB, short Opcode, unsigned numOps);
- // The opcode.
- //
- const MachineOpCode getOpcode() const { return opCode; }
- const MachineOpCode getOpCode() const { return opCode; }
+ ~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(); }
- //
- // Information about explicit operands of the instruction
- //
- unsigned getNumOperands() const { return operands.size() - numImplicitRefs; }
-
const MachineOperand& getOperand(unsigned i) const {
assert(i < getNumOperands() && "getOperand() out of range!");
- return operands[i];
+ return Operands[i];
}
MachineOperand& getOperand(unsigned i) {
assert(i < getNumOperands() && "getOperand() out of range!");
- return operands[i];
- }
-
- // FIXME: ELIMINATE
- MachineOperand::MachineOperandType getOperandType(unsigned i) const {
- return getOperand(i).getType();
- }
-
- // FIXME: ELIMINATE: Misleading name: Definition not defined.
- bool operandIsDefined(unsigned i) const {
- return getOperand(i).opIsDef();
+ return Operands[i];
}
- bool operandIsDefinedAndUsed(unsigned i) const {
- return getOperand(i).opIsDefAndUse();
- }
-
- //
- // Information about implicit operands of the instruction
- //
- unsigned getNumImplicitRefs() const{ return numImplicitRefs; }
- const Value* getImplicitRef(unsigned i) const {
- return getImplicitOp(i).getVRegValue();
- }
- Value* getImplicitRef(unsigned i) {
- return getImplicitOp(i).getVRegValue();
- }
-
- bool implicitRefIsDefined(unsigned i) const {
- return getImplicitOp(i).opIsDef();
- }
- bool implicitRefIsDefinedAndUsed(unsigned i) const {
- return getImplicitOp(i).opIsDefAndUse();
- }
- inline void addImplicitRef (Value* V,
- bool isDef=false,bool isDefAndUse=false);
- inline void setImplicitRef (unsigned i, Value* V,
- bool isDef=false, bool isDefAndUse=false);
-
- //
- // Information about registers used in this instruction
- //
- const std::vector<bool> &getRegsUsed() const { return regsUsed; }
+ /// isIdenticalTo - Return true if this instruction is identical to (same
+ /// opcode and same operands as) the specified instruction.
+ bool isIdenticalTo(const MachineInstr *Other) const {
+ if (Other->getOpcode() != getOpcode() ||
+ Other->getNumOperands() != getNumOperands())
+ return false;
+ for (unsigned i = 0, e = getNumOperands(); i != e; ++i)
+ if (!getOperand(i).isIdenticalTo(Other->getOperand(i)))
+ return false;
+ return true;
+ }
+
+ /// 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 { return new MachineInstr(*this); }
+
+ /// removeFromParent - This method unlinks 'this' from the containing basic
+ /// block, and returns it, but does not delete it.
+ MachineInstr *removeFromParent();
- // insertUsedReg - Add a register to the Used registers set...
- void insertUsedReg(unsigned Reg) {
- if (Reg >= regsUsed.size())
- regsUsed.resize(Reg+1);
- regsUsed[Reg] = true;
+ /// 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
+ // Accessors to add operands when building up machine instructions.
//
- /// addRegOperand - Add a MO_VirtualRegister operand to the end of the
- /// operands list...
- ///
- 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)));
- }
-
- void addRegOperand(Value *V, MOTy::UseType UTy = MOTy::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));
- }
-
- /// addRegOperand - Add a symbolic virtual register reference...
- ///
- void addRegOperand(int reg, MOTy::UseType UTy = MOTy::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));
- }
-
- /// addPCDispOperand - Add a PC relative displacement operand to the MI
- ///
- void addPCDispOperand(Value *V) {
- 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));
- }
-
- /// addMachineRegOperand - Add a virtual register operand to this MachineInstr
- ///
- 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(reg, MachineOperand::MO_MachineRegister,
- isDef ? MOTy::Def : MOTy::Use));
- insertUsedReg(reg);
- }
-
- /// addMachineRegOperand - Add a virtual register operand to this MachineInstr
+ /// addRegOperand - Add a register operand.
///
- void addMachineRegOperand(int reg, MOTy::UseType UTy = MOTy::Use) {
- assert(!OperandsComplete() &&
- "Trying to add an operand to a machine instr that is already done!");
- operands.push_back(MachineOperand(reg, MachineOperand::MO_MachineRegister,
- UTy));
- insertUsedReg(reg);
+ void addRegOperand(unsigned Reg, bool IsDef) {
+ MachineOperand &Op = AddNewOperand();
+ Op.opType = MachineOperand::MO_Register;
+ Op.IsDef = IsDef;
+ Op.contents.RegNo = Reg;
+ Op.offset = 0;
}
- /// addZeroExtImmOperand - Add a zero extended constant argument to the
+ /// addImmOperand - Add a zero extended constant argument to the
/// machine instruction.
///
- void addZeroExtImmOperand(int64_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));
- }
-
- /// addSignExtImmOperand - Add a zero extended constant argument to the
- /// machine instruction.
- ///
- void addSignExtImmOperand(int64_t intValue) {
- assert(!OperandsComplete() &&
- "Trying to add an operand to a machine instr that is already done!");
- operands.push_back(MachineOperand(intValue,
- MachineOperand::MO_SignExtendedImmed));
+ void addImmOperand(int64_t Val) {
+ MachineOperand &Op = AddNewOperand();
+ Op.opType = MachineOperand::MO_Immediate;
+ Op.contents.immedVal = Val;
+ Op.offset = 0;
}
void addMachineBasicBlockOperand(MachineBasicBlock *MBB) {
- assert(!OperandsComplete() &&
- "Trying to add an operand to a machine instr that is already done!");
- operands.push_back(MachineOperand(MBB));
+ MachineOperand &Op = AddNewOperand();
+ Op.opType = MachineOperand::MO_MachineBasicBlock;
+ Op.contents.MBB = MBB;
+ Op.offset = 0;
}
/// addFrameIndexOperand - Add an abstract frame index to the instruction
///
void addFrameIndexOperand(unsigned Idx) {
- assert(!OperandsComplete() &&
- "Trying to add an operand to a machine instr that is already done!");
- operands.push_back(MachineOperand(Idx, MachineOperand::MO_FrameIndex));
+ MachineOperand &Op = AddNewOperand();
+ Op.opType = MachineOperand::MO_FrameIndex;
+ Op.contents.immedVal = Idx;
+ Op.offset = 0;
}
/// addConstantPoolndexOperand - Add a constant pool object index to the
/// instruction.
///
- void addConstantPoolIndexOperand(unsigned I) {
- assert(!OperandsComplete() &&
- "Trying to add an operand to a machine instr that is already done!");
- operands.push_back(MachineOperand(I, MachineOperand::MO_ConstantPoolIndex));
+ void addConstantPoolIndexOperand(unsigned Idx, int Offset) {
+ MachineOperand &Op = AddNewOperand();
+ Op.opType = MachineOperand::MO_ConstantPoolIndex;
+ Op.contents.immedVal = Idx;
+ Op.offset = Offset;
}
- void addGlobalAddressOperand(GlobalValue *GV, bool isPCRelative) {
- 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));
+ /// addJumpTableIndexOperand - Add a jump table object index to the
+ /// instruction.
+ ///
+ void addJumpTableIndexOperand(unsigned Idx) {
+ MachineOperand &Op = AddNewOperand();
+ Op.opType = MachineOperand::MO_JumpTableIndex;
+ Op.contents.immedVal = Idx;
+ Op.offset = 0;
+ }
+
+ void addGlobalAddressOperand(GlobalValue *GV, int Offset) {
+ MachineOperand &Op = AddNewOperand();
+ Op.opType = MachineOperand::MO_GlobalAddress;
+ Op.contents.GV = GV;
+ Op.offset = 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) {
+ MachineOperand &Op = AddNewOperand();
+ Op.opType = MachineOperand::MO_ExternalSymbol;
+ Op.contents.SymbolName = SymName;
+ Op.offset = 0;
}
//===--------------------------------------------------------------------===//
// Accessors used to modify instructions in place.
//
- // 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(MachineOpCode Opcode, unsigned numOperands);
/// setOpcode - Replace the opcode of the current instruction with a new one.
///
- void setOpcode(unsigned Op) { opCode = Op; }
+ void setOpcode(unsigned Op) { Opcode = Op; }
/// RemoveOperand - Erase an operand from an instruction, leaving it with one
/// fewer operand than it started with.
///
void RemoveOperand(unsigned i) {
- operands.erase(operands.begin()+i);
- }
-
- // Access to set the operands when building the machine instruction
- //
- void SetMachineOperandVal (unsigned i,
- MachineOperand::MachineOperandType operandType,
- Value* V,
- bool isDef=false,
- bool isDefAndUse=false);
-
- void SetMachineOperandConst (unsigned i,
- MachineOperand::MachineOperandType operandType,
- int64_t intValue);
-
- void SetMachineOperandReg (unsigned i,
- int regNum,
- bool isDef=false);
-
-
- unsigned substituteValue(const Value* oldVal, Value* newVal,
- bool defsOnly = true);
-
- 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 - Replaces the Value for the operand with its allocated
- // physical register after register allocation is complete.
- //
- void SetRegForOperand(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->getOperandType(i) == MachineOperand::MO_VirtualRegister ||
- MI->getOperandType(i) == 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 isDef() const { return MI->getOperand(i).opIsDef(); }
- inline bool isDefAndUse() const { return MI->getOperand(i).opIsDefAndUse();}
-
- 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());
- }
- };
-
- // define begin() and end()
- val_op_iterator begin() { return val_op_iterator::begin(this); }
- val_op_iterator end() { return val_op_iterator::end(this); }
-
- const_val_op_iterator begin() const {
- return const_val_op_iterator::begin(this);
+ Operands.erase(Operands.begin()+i);
}
- const_val_op_iterator end() const {
- return const_val_op_iterator::end(this);
+private:
+ MachineOperand &AddNewOperand() {
+ assert(!OperandsComplete() &&
+ "Trying to add an operand to a machine instr that is already done!");
+ Operands.push_back(MachineOperand());
+ return Operands.back();
}
};
-
-// Define here to enable inlining of the functions used.
-//
-void MachineInstr::addImplicitRef(Value* V,
- bool isDef,
- bool isDefAndUse)
-{
- ++numImplicitRefs;
- addRegOperand(V, isDef, isDefAndUse);
-}
-
-void MachineInstr::setImplicitRef(unsigned i,
- Value* V,
- bool isDef,
- bool isDefAndUse)
-{
- assert(i < getNumImplicitRefs() && "setImplicitRef() out of range!");
- SetMachineOperandVal(i + getNumOperands(),
- MachineOperand::MO_VirtualRegister,
- V, isDef, isDefAndUse);
-}
-
-
-//---------------------------------------------------------------------------
+//===----------------------------------------------------------------------===//
// Debugging Support
-//---------------------------------------------------------------------------
-std::ostream& operator<< (std::ostream& os,
- const MachineInstr& minstr);
+std::ostream& operator<<(std::ostream &OS, const MachineInstr &MI);
+std::ostream& operator<<(std::ostream &OS, const MachineOperand &MO);
-std::ostream& operator<< (std::ostream& os,
- const MachineOperand& mop);
-
-void PrintMachineInstructions (const Function *F);
+} // End llvm namespace
#endif
projects / oota-llvm.git / blobdiff