//===-- llvm/InstrTypes.h - Important Instruction subclasses ----*- 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 defines various meta classes of instructions that exist in the VM
// representation. Specific concrete subclasses of these may be found in the
#include "llvm/Instruction.h"
+namespace llvm {
+
//===----------------------------------------------------------------------===//
// TerminatorInst Class
//===----------------------------------------------------------------------===//
///
class TerminatorInst : public Instruction {
protected:
- TerminatorInst(Instruction::TermOps iType, Instruction *InsertBefore = 0);
+ TerminatorInst(Instruction::TermOps iType, Use *Ops, unsigned NumOps,
+ Instruction *InsertBefore = 0);
TerminatorInst(const Type *Ty, Instruction::TermOps iType,
+ Use *Ops, unsigned NumOps,
const std::string &Name = "", Instruction *InsertBefore = 0)
- : Instruction(Ty, iType, Name, InsertBefore) {
- }
+ : Instruction(Ty, iType, Ops, NumOps, Name, InsertBefore) {}
+
+ TerminatorInst(Instruction::TermOps iType, Use *Ops, unsigned NumOps,
+ BasicBlock *InsertAtEnd);
+ TerminatorInst(const Type *Ty, Instruction::TermOps iType,
+ Use *Ops, unsigned NumOps,
+ const std::string &Name, BasicBlock *InsertAtEnd)
+ : Instruction(Ty, iType, Ops, NumOps, Name, InsertAtEnd) {}
+
+ /// Virtual methods - Terminators should overload these and provide inline
+ /// overrides of non-V methods.
+ virtual BasicBlock *getSuccessorV(unsigned idx) const = 0;
+ virtual unsigned getNumSuccessorsV() const = 0;
+ virtual void setSuccessorV(unsigned idx, BasicBlock *B) = 0;
public:
- /// Terminators must implement the methods required by Instruction...
virtual Instruction *clone() const = 0;
- /// Additionally, they must provide a method to get at the successors of this
- /// terminator instruction. 'idx' may not be >= the number of successors
- /// returned by getNumSuccessors()!
+ /// getNumSuccessors - Return the number of successors that this terminator
+ /// has.
+ unsigned getNumSuccessors() const {
+ return getNumSuccessorsV();
+ }
+
+ /// getSuccessor - Return the specified successor.
///
- virtual const BasicBlock *getSuccessor(unsigned idx) const = 0;
- virtual unsigned getNumSuccessors() const = 0;
-
- /// Set a successor at a given index
- virtual void setSuccessor(unsigned idx, BasicBlock *B) = 0;
+ BasicBlock *getSuccessor(unsigned idx) const {
+ return getSuccessorV(idx);
+ }
- inline BasicBlock *getSuccessor(unsigned idx) {
- return (BasicBlock*)((const TerminatorInst *)this)->getSuccessor(idx);
+ /// setSuccessor - Update the specified successor to point at the provided
+ /// block.
+ void setSuccessor(unsigned idx, BasicBlock *B) {
+ setSuccessorV(idx, B);
}
// Methods for support type inquiry through isa, cast, and dyn_cast:
}
};
+//===----------------------------------------------------------------------===//
+// UnaryInstruction Class
+//===----------------------------------------------------------------------===//
+
+class UnaryInstruction : public Instruction {
+ Use Op;
+protected:
+ UnaryInstruction(const Type *Ty, unsigned iType, Value *V,
+ const std::string &Name = "", Instruction *IB = 0)
+ : Instruction(Ty, iType, &Op, 1, Name, IB), Op(V, this) {
+ }
+ UnaryInstruction(const Type *Ty, unsigned iType, Value *V,
+ const std::string &Name, BasicBlock *IAE)
+ : Instruction(Ty, iType, &Op, 1, Name, IAE), Op(V, this) {
+ }
+public:
+
+ // Transparently provide more efficient getOperand methods.
+ Value *getOperand(unsigned i) const {
+ assert(i == 0 && "getOperand() out of range!");
+ return Op;
+ }
+ void setOperand(unsigned i, Value *Val) {
+ assert(i == 0 && "setOperand() out of range!");
+ Op = Val;
+ }
+ unsigned getNumOperands() const { return 1; }
+};
//===----------------------------------------------------------------------===//
// BinaryOperator Class
//===----------------------------------------------------------------------===//
class BinaryOperator : public Instruction {
+ Use Ops[2];
protected:
+ void init(BinaryOps iType);
BinaryOperator(BinaryOps iType, Value *S1, Value *S2, const Type *Ty,
- const std::string &Name, Instruction *InsertBefore);
+ const std::string &Name, Instruction *InsertBefore)
+ : Instruction(Ty, iType, Ops, 2, Name, InsertBefore) {
+ Ops[0].init(S1, this);
+ Ops[1].init(S2, this);
+ init(iType);
+ }
+ BinaryOperator(BinaryOps iType, Value *S1, Value *S2, const Type *Ty,
+ const std::string &Name, BasicBlock *InsertAtEnd)
+ : Instruction(Ty, iType, Ops, 2, Name, InsertAtEnd) {
+ Ops[0].init(S1, this);
+ Ops[1].init(S2, this);
+ init(iType);
+ }
public:
+ /// Transparently provide more efficient getOperand methods.
+ Value *getOperand(unsigned i) const {
+ assert(i < 2 && "getOperand() out of range!");
+ return Ops[i];
+ }
+ void setOperand(unsigned i, Value *Val) {
+ assert(i < 2 && "setOperand() out of range!");
+ Ops[i] = Val;
+ }
+ unsigned getNumOperands() const { return 2; }
+
/// create() - Construct a binary instruction, given the opcode and the two
/// operands. Optionally (if InstBefore is specified) insert the instruction
/// into a BasicBlock right before the specified instruction. The specified
const std::string &Name = "",
Instruction *InsertBefore = 0);
+ /// create() - Construct a binary instruction, given the opcode and the two
+ /// operands. Also automatically insert this instruction to the end of the
+ /// BasicBlock specified.
+ ///
+ static BinaryOperator *create(BinaryOps Op, Value *S1, Value *S2,
+ const std::string &Name,
+ BasicBlock *InsertAtEnd);
+
+ /// create* - These methods just forward to create, and are useful when you
+ /// statically know what type of instruction you're going to create. These
+ /// helpers just save some typing.
+#define HANDLE_BINARY_INST(N, OPC, CLASS) \
+ static BinaryOperator *create##OPC(Value *V1, Value *V2, \
+ const std::string &Name = "") {\
+ return create(Instruction::OPC, V1, V2, Name);\
+ }
+#include "llvm/Instruction.def"
+#define HANDLE_BINARY_INST(N, OPC, CLASS) \
+ static BinaryOperator *create##OPC(Value *V1, Value *V2, \
+ const std::string &Name, BasicBlock *BB) {\
+ return create(Instruction::OPC, V1, V2, Name, BB);\
+ }
+#include "llvm/Instruction.def"
+#define HANDLE_BINARY_INST(N, OPC, CLASS) \
+ static BinaryOperator *create##OPC(Value *V1, Value *V2, \
+ const std::string &Name, Instruction *I) {\
+ return create(Instruction::OPC, V1, V2, Name, I);\
+ }
+#include "llvm/Instruction.def"
+
/// Helper functions to construct and inspect unary operations (NEG and NOT)
/// via binary operators SUB and XOR:
///
static BinaryOperator *createNeg(Value *Op, const std::string &Name = "",
Instruction *InsertBefore = 0);
+ static BinaryOperator *createNeg(Value *Op, const std::string &Name,
+ BasicBlock *InsertAtEnd);
static BinaryOperator *createNot(Value *Op, const std::string &Name = "",
Instruction *InsertBefore = 0);
+ static BinaryOperator *createNot(Value *Op, const std::string &Name,
+ BasicBlock *InsertAtEnd);
/// isNeg, isNot - Check if the given Value is a NEG or NOT instruction.
///
static Value* getNotArgument( BinaryOperator* Bop);
BinaryOps getOpcode() const {
- return (BinaryOps)Instruction::getOpcode();
+ return static_cast<BinaryOps>(Instruction::getOpcode());
}
- virtual Instruction *clone() const {
- return create(getOpcode(), Operands[0], Operands[1]);
- }
+ virtual BinaryOperator *clone() const;
/// swapOperands - Exchange the two operands to this instruction.
/// This instruction is safe to use on any binary instruction and
}
};
+} // End llvm namespace
+
#endif
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