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109 lines
3.6 KiB
C++
109 lines
3.6 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 Instruction : public User {
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BasicBlock *Parent;
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friend class ValueHolder<Instruction,BasicBlock,Method>;
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inline void setParent(BasicBlock *P) { Parent = P; }
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protected:
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unsigned iType; // InstructionType
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public:
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Instruction(const Type *Ty, unsigned iType, const std::string &Name = "");
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virtual ~Instruction() {
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assert(Parent == 0 && "Instruction still embedded in basic block!");
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}
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// Specialize setName to handle symbol table majik...
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virtual void setName(const std::string &name, SymbolTable *ST = 0);
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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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virtual bool hasSideEffects() const { return false; } // Memory & Call insts
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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 const char *getOpcodeName() const = 0;
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unsigned getOpcode() const { return iType; }
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// getInstType is deprecated, use getOpcode() instead.
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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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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const Instruction *I) { return true; }
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static inline bool classof(const Value *V) {
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return V->getValueType() == Value::InstructionVal;
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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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#define FIRST_TERM_INST(N) FirstTermOp = N,
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#define HANDLE_TERM_INST(N, OPC, CLASS) OPC = N,
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#define LAST_TERM_INST(N) NumTermOps = N+1,
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#include "llvm/Instruction.def"
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};
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enum UnaryOps {
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#define FIRST_UNARY_INST(N) FirstUnaryOp = N,
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#define HANDLE_UNARY_INST(N, OPC, CLASS) OPC = N,
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#define LAST_UNARY_INST(N) NumUnaryOps = N+1,
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#include "llvm/Instruction.def"
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};
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enum BinaryOps {
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#define FIRST_BINARY_INST(N) FirstBinaryOp = N,
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#define HANDLE_BINARY_INST(N, OPC, CLASS) OPC = N,
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#define LAST_BINARY_INST(N) NumBinaryOps = N+1,
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#include "llvm/Instruction.def"
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};
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enum MemoryOps {
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#define FIRST_MEMORY_INST(N) FirstMemoryOp = N,
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#define HANDLE_MEMORY_INST(N, OPC, CLASS) OPC = N,
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#define LAST_MEMORY_INST(N) NumMemoryOps = N+1,
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#include "llvm/Instruction.def"
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};
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enum OtherOps {
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#define FIRST_OTHER_INST(N) FirstOtherOp = N,
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#define HANDLE_OTHER_INST(N, OPC, CLASS) OPC = N,
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#define LAST_OTHER_INST(N) NumOtherOps = N+1,
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#include "llvm/Instruction.def"
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};
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};
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#endif
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