-//===-- llvm/Instruction.h - Instruction class definition --------*- C++ -*--=//
+//===-- llvm/Instruction.h - Instruction class definition -------*- C++ -*-===//
//
// This file contains the declaration of the Instruction class, which is the
-// base class for all of the VM instructions.
+// base class for all of the LLVM instructions.
//
//===----------------------------------------------------------------------===//
#define LLVM_INSTRUCTION_H
#include "llvm/User.h"
-
-class Type;
-class BasicBlock;
-class Method;
-class MachineInstr;
-class MachineCodeForVMInstr;
+template<typename SC> struct ilist_traits;
+template<typename ValueSubClass, typename ItemParentClass, typename SymTabClass,
+ typename SubClass> class SymbolTableListTraits;
class Instruction : public User {
BasicBlock *Parent;
- unsigned iType; // InstructionType
+ Instruction *Prev, *Next; // Next and Prev links for our intrusive linked list
+
+ void setNext(Instruction *N) { Next = N; }
+ void setPrev(Instruction *N) { Prev = N; }
- MachineCodeForVMInstr* machineInstrVec;
- friend class ValueHolder<Instruction,BasicBlock,Method>;
- inline void setParent(BasicBlock *P) { Parent = P; }
+ friend class SymbolTableListTraits<Instruction, BasicBlock, Function,
+ ilist_traits<Instruction> >;
+ void setParent(BasicBlock *P);
+protected:
+ unsigned iType; // InstructionType: The opcode of the instruction
+ Instruction(const Type *Ty, unsigned iType, const std::string &Name = "",
+ Instruction *InsertBefore = 0);
public:
- Instruction(const Type *Ty, unsigned iType, const string &Name = "");
- virtual ~Instruction(); // Virtual dtor == good.
+ virtual ~Instruction() {
+ assert(Parent == 0 && "Instruction still embedded in basic block!");
+ }
// Specialize setName to handle symbol table majik...
- virtual void setName(const string &name, SymbolTable *ST = 0);
+ virtual void setName(const std::string &name, SymbolTable *ST = 0);
- // clone() - Create a copy of 'this' instruction that is identical in all ways
- // except the following:
- // * The instruction has no parent
- // * The instruction has no name
- //
+ /// clone() - Create a copy of 'this' instruction that is identical in all
+ /// ways except the following:
+ /// * The instruction has no parent
+ /// * The instruction has no name
+ ///
virtual Instruction *clone() const = 0;
// Accessor methods...
//
inline const BasicBlock *getParent() const { return Parent; }
inline BasicBlock *getParent() { return Parent; }
+
+ // getNext/Prev - Return the next or previous instruction in the list. The
+ // last node in the list is a terminator instruction.
+ Instruction *getNext() { return Next; }
+ const Instruction *getNext() const { return Next; }
+ Instruction *getPrev() { return Prev; }
+ const Instruction *getPrev() const { return Prev; }
+
virtual bool hasSideEffects() const { return false; } // Memory & Call insts
// ---------------------------------------------------------------------------
- // Machine code accessors...
- //
- inline MachineCodeForVMInstr &getMachineInstrVec() const {
- return *machineInstrVec;
- }
-
- // Add a machine instruction used to implement this instruction
- //
- void addMachineInstruction(MachineInstr* minstr);
-
- // ---------------------------------------------------------------------------
- // Subclass classification... getInstType() returns a member of
- // one of the enums that is coming soon (down below)...
- //
- virtual const char *getOpcodeName() const = 0;
+ /// Subclass classification... getOpcode() returns a member of
+ /// one of the enums that is coming soon (down below)...
+ ///
unsigned getOpcode() const { return iType; }
-
- // getInstType is deprecated, use getOpcode() instead.
- unsigned getInstType() const { return iType; }
+ virtual const char *getOpcodeName() const {
+ return getOpcodeName(getOpcode());
+ }
+ static const char* getOpcodeName(unsigned OpCode);
inline bool isTerminator() const { // Instance of TerminatorInst?
return iType >= FirstTermOp && iType < NumTermOps;
}
- inline bool isDefinition() const { return !isTerminator(); }
- inline bool isUnaryOp() const {
- return iType >= FirstUnaryOp && iType < NumUnaryOps;
- }
inline bool isBinaryOp() const {
return iType >= FirstBinaryOp && iType < NumBinaryOps;
}
- // dropAllReferences() - This function is in charge of "letting go" of all
- // objects that this Instruction refers to. This first lets go of all
- // references to hidden values generated code for this instruction,
- // and then drops all references to its operands.
- //
- void dropAllReferences();
+ virtual void print(std::ostream &OS) const;
-
- // Methods for support type inquiry through isa, cast, and dyn_cast:
+ /// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const Instruction *I) { return true; }
static inline bool classof(const Value *V) {
return V->getValueType() == Value::InstructionVal;
// Exported enumerations...
//
enum TermOps { // These terminate basic blocks
- FirstTermOp = 1,
- Ret = 1, Br, Switch,
- NumTermOps // Must remain at end of enum
- };
-
- enum UnaryOps {
- FirstUnaryOp = NumTermOps,
- Not = NumTermOps, // Binary inverse
-
- NumUnaryOps // Must remain at end of enum
+#define FIRST_TERM_INST(N) FirstTermOp = N,
+#define HANDLE_TERM_INST(N, OPC, CLASS) OPC = N,
+#define LAST_TERM_INST(N) NumTermOps = N+1,
+#include "llvm/Instruction.def"
};
enum BinaryOps {
- // Standard binary operators...
- FirstBinaryOp = NumUnaryOps,
- Add = NumUnaryOps, Sub, Mul, Div, Rem,
-
- // Logical operators...
- And, Or, Xor,
-
- // Binary comparison operators...
- SetEQ, SetNE, SetLE, SetGE, SetLT, SetGT,
-
- NumBinaryOps
+#define FIRST_BINARY_INST(N) FirstBinaryOp = N,
+#define HANDLE_BINARY_INST(N, OPC, CLASS) OPC = N,
+#define LAST_BINARY_INST(N) NumBinaryOps = N+1,
+#include "llvm/Instruction.def"
};
enum MemoryOps {
- FirstMemoryOp = NumBinaryOps,
- Malloc = NumBinaryOps, Free, // Heap management instructions
- Alloca, // Stack management instruction
-
- Load, Store, // Memory manipulation instructions.
- GetElementPtr, // Get addr of Structure or Array element
-
- NumMemoryOps
+#define FIRST_MEMORY_INST(N) FirstMemoryOp = N,
+#define HANDLE_MEMORY_INST(N, OPC, CLASS) OPC = N,
+#define LAST_MEMORY_INST(N) NumMemoryOps = N+1,
+#include "llvm/Instruction.def"
};
enum OtherOps {
- FirstOtherOp = NumMemoryOps,
- PHINode = NumMemoryOps, // PHI node instruction
- Cast, // Type cast...
- Call, // Call a function
-
- Shl, Shr, // Shift operations...
-
- NumOps, // Must be the last 'op' defined.
- UserOp1, UserOp2 // May be used internally to a pass...
+#define FIRST_OTHER_INST(N) FirstOtherOp = N,
+#define HANDLE_OTHER_INST(N, OPC, CLASS) OPC = N,
+#define LAST_OTHER_INST(N) NumOtherOps = N+1,
+#include "llvm/Instruction.def"
};
};
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