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https://github.com/c64scene-ar/llvm-6502.git
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to the UnaryOperator class (from the Instruction class). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21 91177308-0d34-0410-b5e6-96231b3b80d8
197 lines
6.2 KiB
C++
197 lines
6.2 KiB
C++
//===-- llvm/Instruction.h - Instruction class definition --------*- C++ -*--=//
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//
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// This file contains the declaration of the Instruction class, which is the
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// base class for all of the VM instructions.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_INSTRUCTION_H
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#define LLVM_INSTRUCTION_H
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#include "llvm/User.h"
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class Type;
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class BasicBlock;
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class Method;
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class Instruction : public User {
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BasicBlock *Parent;
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unsigned iType; // InstructionType
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friend class ValueHolder<Instruction,BasicBlock>;
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inline void setParent(BasicBlock *P) { Parent = P; }
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public:
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Instruction(const Type *Ty, unsigned iType, const string &Name = "");
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virtual ~Instruction(); // Virtual dtor == good.
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// Specialize setName to handle symbol table majik...
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virtual void setName(const string &name);
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// clone() - Create a copy of 'this' instruction that is identical in all ways
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// except the following:
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// * The instruction has no parent
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// * The instruction has no name
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//
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virtual Instruction *clone() const = 0;
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// Accessor methods...
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//
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inline const BasicBlock *getParent() const { return Parent; }
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inline BasicBlock *getParent() { return Parent; }
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bool hasSideEffects() const { return false; } // Memory & Call insts = true
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// ---------------------------------------------------------------------------
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// Implement the User interface
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// if i > the number of operands, then getOperand() returns 0, and setOperand
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// returns false. setOperand() may also return false if the operand is of
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// the wrong type.
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//
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inline Value *getOperand(unsigned i) {
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return (Value*)((const Instruction *)this)->getOperand(i);
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}
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virtual const Value *getOperand(unsigned i) const = 0;
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virtual bool setOperand(unsigned i, Value *Val) = 0;
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virtual unsigned getNumOperands() const = 0;
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// ---------------------------------------------------------------------------
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// Operand Iterator interface...
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//
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template <class _Inst, class _Val> class OperandIterator;
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typedef OperandIterator<Instruction *, Value *> op_iterator;
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typedef OperandIterator<const Instruction *, const Value *> op_const_iterator;
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inline op_iterator op_begin() ;
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inline op_const_iterator op_begin() const;
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inline op_iterator op_end() ;
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inline op_const_iterator op_end() const;
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// ---------------------------------------------------------------------------
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// Subclass classification... getInstType() returns a member of
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// one of the enums that is coming soon (down below)...
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//
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virtual string getOpcode() const = 0;
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unsigned getInstType() const { return iType; }
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inline bool isTerminator() const { // Instance of TerminatorInst?
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return iType >= FirstTermOp && iType < NumTermOps;
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}
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inline bool isDefinition() const { return !isTerminator(); }
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inline bool isUnaryOp() const {
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return iType >= FirstUnaryOp && iType < NumUnaryOps;
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}
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inline bool isBinaryOp() const {
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return iType >= FirstBinaryOp && iType < NumBinaryOps;
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}
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//----------------------------------------------------------------------
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// Exported enumerations...
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//
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enum TermOps { // These terminate basic blocks
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FirstTermOp = 1,
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Ret = 1, Br, Switch,
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NumTermOps // Must remain at end of enum
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};
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enum UnaryOps {
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FirstUnaryOp = NumTermOps,
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Neg = NumTermOps, Not,
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// Type conversions...
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ToBoolTy ,
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ToUByteTy , ToSByteTy, ToUShortTy, ToShortTy,
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ToUInt , ToInt, ToULongTy , ToLongTy,
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ToFloatTy , ToDoubleTy, ToArrayTy , ToPointerTy,
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NumUnaryOps // Must remain at end of enum
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};
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enum BinaryOps {
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// Standard binary operators...
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FirstBinaryOp = NumUnaryOps,
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Add = NumUnaryOps, Sub, Mul, Div, Rem,
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// Logical operators...
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And, Or, Xor,
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// Binary comparison operators...
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SetEQ, SetNE, SetLE, SetGE, SetLT, SetGT,
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NumBinaryOps
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};
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enum MemoryOps {
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FirstMemoryOp = NumBinaryOps,
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Malloc = NumBinaryOps, Free, // Heap management instructions
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Alloca, // Stack management instruction
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Load, Store, // Memory manipulation instructions.
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GetField, PutField, // Structure manipulation instructions
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NumMemoryOps
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};
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enum OtherOps {
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FirstOtherOp = NumMemoryOps,
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PHINode = NumMemoryOps, // PHI node instruction
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Call, // Call a function
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Shl, Shr, // Shift operations...
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NumOps, // Must be the last 'op' defined.
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UserOp1, UserOp2 // May be used internally to a pass...
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};
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public:
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template <class _Inst, class _Val> // Operand Iterator Implementation
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class OperandIterator {
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const _Inst Inst;
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unsigned idx;
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public:
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typedef OperandIterator<_Inst, _Val> _Self;
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typedef bidirectional_iterator_tag iterator_category;
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typedef _Val pointer;
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inline OperandIterator(_Inst T) : Inst(T), idx(0) {} // begin iterator
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inline OperandIterator(_Inst T, bool)
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: Inst(T), idx(Inst->getNumOperands()) {} // end iterator
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inline bool operator==(const _Self& x) const { return idx == x.idx; }
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inline bool operator!=(const _Self& x) const { return !operator==(x); }
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inline pointer operator*() const { return Inst->getOperand(idx); }
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inline pointer *operator->() const { return &(operator*()); }
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inline _Self& operator++() { ++idx; return *this; } // Preincrement
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inline _Self operator++(int) { // Postincrement
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_Self tmp = *this; ++*this; return tmp;
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}
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inline _Self& operator--() { --idx; return *this; } // Predecrement
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inline _Self operator--(int) { // Postdecrement
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_Self tmp = *this; --*this; return tmp;
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}
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};
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};
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inline Instruction::op_iterator Instruction::op_begin() {
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return op_iterator(this);
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}
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inline Instruction::op_const_iterator Instruction::op_begin() const {
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return op_const_iterator(this);
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}
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inline Instruction::op_iterator Instruction::op_end() {
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return op_iterator(this,true);
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}
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inline Instruction::op_const_iterator Instruction::op_end() const {
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return op_const_iterator(this,true);
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}
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#endif
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