1 //===-- llvm/Instructions.h - Instruction subclass definitions --*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file exposes the class definitions of all of the subclasses of the
11 // Instruction class. This is meant to be an easy way to get access to all
12 // instruction subclasses.
14 //===----------------------------------------------------------------------===//
16 #ifndef LLVM_INSTRUCTIONS_H
17 #define LLVM_INSTRUCTIONS_H
19 #include "llvm/InstrTypes.h"
28 //===----------------------------------------------------------------------===//
29 // AllocationInst Class
30 //===----------------------------------------------------------------------===//
32 /// AllocationInst - This class is the common base class of MallocInst and
35 class AllocationInst : public UnaryInstruction {
38 AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy, unsigned Align,
39 const std::string &Name = "", Instruction *InsertBefore = 0);
40 AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy, unsigned Align,
41 const std::string &Name, BasicBlock *InsertAtEnd);
43 // Out of line virtual method, so the vtable, etc has a home.
44 virtual ~AllocationInst();
46 /// isArrayAllocation - Return true if there is an allocation size parameter
47 /// to the allocation instruction that is not 1.
49 bool isArrayAllocation() const;
51 /// getArraySize - Get the number of element allocated, for a simple
52 /// allocation of a single element, this will return a constant 1 value.
54 inline const Value *getArraySize() const { return getOperand(0); }
55 inline Value *getArraySize() { return getOperand(0); }
57 /// getType - Overload to return most specific pointer type
59 inline const PointerType *getType() const {
60 return reinterpret_cast<const PointerType*>(Instruction::getType());
63 /// getAllocatedType - Return the type that is being allocated by the
66 const Type *getAllocatedType() const;
68 /// getAlignment - Return the alignment of the memory that is being allocated
69 /// by the instruction.
71 unsigned getAlignment() const { return Alignment; }
72 void setAlignment(unsigned Align) {
73 assert((Align & (Align-1)) == 0 && "Alignment is not a power of 2!");
77 virtual Instruction *clone() const = 0;
79 // Methods for support type inquiry through isa, cast, and dyn_cast:
80 static inline bool classof(const AllocationInst *) { return true; }
81 static inline bool classof(const Instruction *I) {
82 return I->getOpcode() == Instruction::Alloca ||
83 I->getOpcode() == Instruction::Malloc;
85 static inline bool classof(const Value *V) {
86 return isa<Instruction>(V) && classof(cast<Instruction>(V));
91 //===----------------------------------------------------------------------===//
93 //===----------------------------------------------------------------------===//
95 /// MallocInst - an instruction to allocated memory on the heap
97 class MallocInst : public AllocationInst {
98 MallocInst(const MallocInst &MI);
100 explicit MallocInst(const Type *Ty, Value *ArraySize = 0,
101 const std::string &Name = "",
102 Instruction *InsertBefore = 0)
103 : AllocationInst(Ty, ArraySize, Malloc, 0, Name, InsertBefore) {}
104 MallocInst(const Type *Ty, Value *ArraySize, const std::string &Name,
105 BasicBlock *InsertAtEnd)
106 : AllocationInst(Ty, ArraySize, Malloc, 0, Name, InsertAtEnd) {}
108 MallocInst(const Type *Ty, const std::string &Name,
109 Instruction *InsertBefore = 0)
110 : AllocationInst(Ty, 0, Malloc, 0, Name, InsertBefore) {}
111 MallocInst(const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd)
112 : AllocationInst(Ty, 0, Malloc, 0, Name, InsertAtEnd) {}
114 MallocInst(const Type *Ty, Value *ArraySize, unsigned Align,
115 const std::string &Name, BasicBlock *InsertAtEnd)
116 : AllocationInst(Ty, ArraySize, Malloc, Align, Name, InsertAtEnd) {}
117 MallocInst(const Type *Ty, Value *ArraySize, unsigned Align,
118 const std::string &Name = "",
119 Instruction *InsertBefore = 0)
120 : AllocationInst(Ty, ArraySize, Malloc, Align, Name, InsertBefore) {}
122 virtual MallocInst *clone() const;
124 // Methods for support type inquiry through isa, cast, and dyn_cast:
125 static inline bool classof(const MallocInst *) { return true; }
126 static inline bool classof(const Instruction *I) {
127 return (I->getOpcode() == Instruction::Malloc);
129 static inline bool classof(const Value *V) {
130 return isa<Instruction>(V) && classof(cast<Instruction>(V));
135 //===----------------------------------------------------------------------===//
137 //===----------------------------------------------------------------------===//
139 /// AllocaInst - an instruction to allocate memory on the stack
141 class AllocaInst : public AllocationInst {
142 AllocaInst(const AllocaInst &);
144 explicit AllocaInst(const Type *Ty, Value *ArraySize = 0,
145 const std::string &Name = "",
146 Instruction *InsertBefore = 0)
147 : AllocationInst(Ty, ArraySize, Alloca, 0, Name, InsertBefore) {}
148 AllocaInst(const Type *Ty, Value *ArraySize, const std::string &Name,
149 BasicBlock *InsertAtEnd)
150 : AllocationInst(Ty, ArraySize, Alloca, 0, Name, InsertAtEnd) {}
152 AllocaInst(const Type *Ty, const std::string &Name,
153 Instruction *InsertBefore = 0)
154 : AllocationInst(Ty, 0, Alloca, 0, Name, InsertBefore) {}
155 AllocaInst(const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd)
156 : AllocationInst(Ty, 0, Alloca, 0, Name, InsertAtEnd) {}
158 AllocaInst(const Type *Ty, Value *ArraySize, unsigned Align,
159 const std::string &Name = "", Instruction *InsertBefore = 0)
160 : AllocationInst(Ty, ArraySize, Alloca, Align, Name, InsertBefore) {}
161 AllocaInst(const Type *Ty, Value *ArraySize, unsigned Align,
162 const std::string &Name, BasicBlock *InsertAtEnd)
163 : AllocationInst(Ty, ArraySize, Alloca, Align, Name, InsertAtEnd) {}
165 virtual AllocaInst *clone() const;
167 // Methods for support type inquiry through isa, cast, and dyn_cast:
168 static inline bool classof(const AllocaInst *) { return true; }
169 static inline bool classof(const Instruction *I) {
170 return (I->getOpcode() == Instruction::Alloca);
172 static inline bool classof(const Value *V) {
173 return isa<Instruction>(V) && classof(cast<Instruction>(V));
178 //===----------------------------------------------------------------------===//
180 //===----------------------------------------------------------------------===//
182 /// FreeInst - an instruction to deallocate memory
184 class FreeInst : public UnaryInstruction {
187 explicit FreeInst(Value *Ptr, Instruction *InsertBefore = 0);
188 FreeInst(Value *Ptr, BasicBlock *InsertAfter);
190 virtual FreeInst *clone() const;
192 virtual bool mayWriteToMemory() const { return true; }
194 // Methods for support type inquiry through isa, cast, and dyn_cast:
195 static inline bool classof(const FreeInst *) { return true; }
196 static inline bool classof(const Instruction *I) {
197 return (I->getOpcode() == Instruction::Free);
199 static inline bool classof(const Value *V) {
200 return isa<Instruction>(V) && classof(cast<Instruction>(V));
205 //===----------------------------------------------------------------------===//
207 //===----------------------------------------------------------------------===//
209 /// LoadInst - an instruction for reading from memory. This uses the
210 /// SubclassData field in Value to store whether or not the load is volatile.
212 class LoadInst : public UnaryInstruction {
213 LoadInst(const LoadInst &LI)
214 : UnaryInstruction(LI.getType(), Load, LI.getOperand(0)) {
215 setVolatile(LI.isVolatile());
223 LoadInst(Value *Ptr, const std::string &Name, Instruction *InsertBefore);
224 LoadInst(Value *Ptr, const std::string &Name, BasicBlock *InsertAtEnd);
225 LoadInst(Value *Ptr, const std::string &Name, bool isVolatile = false,
226 Instruction *InsertBefore = 0);
227 LoadInst(Value *Ptr, const std::string &Name, bool isVolatile,
228 BasicBlock *InsertAtEnd);
230 LoadInst(Value *Ptr, const char *Name, Instruction *InsertBefore);
231 LoadInst(Value *Ptr, const char *Name, BasicBlock *InsertAtEnd);
232 explicit LoadInst(Value *Ptr, const char *Name = 0, bool isVolatile = false,
233 Instruction *InsertBefore = 0);
234 LoadInst(Value *Ptr, const char *Name, bool isVolatile,
235 BasicBlock *InsertAtEnd);
237 /// isVolatile - Return true if this is a load from a volatile memory
240 bool isVolatile() const { return SubclassData; }
242 /// setVolatile - Specify whether this is a volatile load or not.
244 void setVolatile(bool V) { SubclassData = V; }
246 virtual LoadInst *clone() const;
248 virtual bool mayWriteToMemory() const { return isVolatile(); }
250 Value *getPointerOperand() { return getOperand(0); }
251 const Value *getPointerOperand() const { return getOperand(0); }
252 static unsigned getPointerOperandIndex() { return 0U; }
254 // Methods for support type inquiry through isa, cast, and dyn_cast:
255 static inline bool classof(const LoadInst *) { return true; }
256 static inline bool classof(const Instruction *I) {
257 return I->getOpcode() == Instruction::Load;
259 static inline bool classof(const Value *V) {
260 return isa<Instruction>(V) && classof(cast<Instruction>(V));
265 //===----------------------------------------------------------------------===//
267 //===----------------------------------------------------------------------===//
269 /// StoreInst - an instruction for storing to memory
271 class StoreInst : public Instruction {
273 StoreInst(const StoreInst &SI) : Instruction(SI.getType(), Store, Ops, 2) {
274 Ops[0].init(SI.Ops[0], this);
275 Ops[1].init(SI.Ops[1], this);
276 setVolatile(SI.isVolatile());
283 StoreInst(Value *Val, Value *Ptr, Instruction *InsertBefore);
284 StoreInst(Value *Val, Value *Ptr, BasicBlock *InsertAtEnd);
285 StoreInst(Value *Val, Value *Ptr, bool isVolatile = false,
286 Instruction *InsertBefore = 0);
287 StoreInst(Value *Val, Value *Ptr, bool isVolatile, BasicBlock *InsertAtEnd);
290 /// isVolatile - Return true if this is a load from a volatile memory
293 bool isVolatile() const { return SubclassData; }
295 /// setVolatile - Specify whether this is a volatile load or not.
297 void setVolatile(bool V) { SubclassData = V; }
299 /// Transparently provide more efficient getOperand methods.
300 Value *getOperand(unsigned i) const {
301 assert(i < 2 && "getOperand() out of range!");
304 void setOperand(unsigned i, Value *Val) {
305 assert(i < 2 && "setOperand() out of range!");
308 unsigned getNumOperands() const { return 2; }
311 virtual StoreInst *clone() const;
313 virtual bool mayWriteToMemory() const { return true; }
315 Value *getPointerOperand() { return getOperand(1); }
316 const Value *getPointerOperand() const { return getOperand(1); }
317 static unsigned getPointerOperandIndex() { return 1U; }
319 // Methods for support type inquiry through isa, cast, and dyn_cast:
320 static inline bool classof(const StoreInst *) { return true; }
321 static inline bool classof(const Instruction *I) {
322 return I->getOpcode() == Instruction::Store;
324 static inline bool classof(const Value *V) {
325 return isa<Instruction>(V) && classof(cast<Instruction>(V));
330 //===----------------------------------------------------------------------===//
331 // GetElementPtrInst Class
332 //===----------------------------------------------------------------------===//
334 /// GetElementPtrInst - an instruction for type-safe pointer arithmetic to
335 /// access elements of arrays and structs
337 class GetElementPtrInst : public Instruction {
338 GetElementPtrInst(const GetElementPtrInst &GEPI)
339 : Instruction(reinterpret_cast<const Type*>(GEPI.getType()), GetElementPtr,
340 0, GEPI.getNumOperands()) {
341 Use *OL = OperandList = new Use[NumOperands];
342 Use *GEPIOL = GEPI.OperandList;
343 for (unsigned i = 0, E = NumOperands; i != E; ++i)
344 OL[i].init(GEPIOL[i], this);
346 void init(Value *Ptr, Value* const *Idx, unsigned NumIdx);
347 void init(Value *Ptr, Value *Idx0, Value *Idx1);
348 void init(Value *Ptr, Value *Idx);
350 /// Constructors - Create a getelementptr instruction with a base pointer an
351 /// list of indices. The first ctor can optionally insert before an existing
352 /// instruction, the second appends the new instruction to the specified
354 GetElementPtrInst(Value *Ptr, Value* const *Idx, unsigned NumIdx,
355 const std::string &Name = "", Instruction *InsertBefore =0);
356 GetElementPtrInst(Value *Ptr, Value* const *Idx, unsigned NumIdx,
357 const std::string &Name, BasicBlock *InsertAtEnd);
359 /// Constructors - These two constructors are convenience methods because one
360 /// and two index getelementptr instructions are so common.
361 GetElementPtrInst(Value *Ptr, Value *Idx,
362 const std::string &Name = "", Instruction *InsertBefore =0);
363 GetElementPtrInst(Value *Ptr, Value *Idx,
364 const std::string &Name, BasicBlock *InsertAtEnd);
365 GetElementPtrInst(Value *Ptr, Value *Idx0, Value *Idx1,
366 const std::string &Name = "", Instruction *InsertBefore =0);
367 GetElementPtrInst(Value *Ptr, Value *Idx0, Value *Idx1,
368 const std::string &Name, BasicBlock *InsertAtEnd);
369 ~GetElementPtrInst();
371 virtual GetElementPtrInst *clone() const;
373 // getType - Overload to return most specific pointer type...
374 inline const PointerType *getType() const {
375 return reinterpret_cast<const PointerType*>(Instruction::getType());
378 /// getIndexedType - Returns the type of the element that would be loaded with
379 /// a load instruction with the specified parameters.
381 /// A null type is returned if the indices are invalid for the specified
384 static const Type *getIndexedType(const Type *Ptr,
385 Value* const *Idx, unsigned NumIdx,
386 bool AllowStructLeaf = false);
388 static const Type *getIndexedType(const Type *Ptr, Value *Idx0, Value *Idx1,
389 bool AllowStructLeaf = false);
390 static const Type *getIndexedType(const Type *Ptr, Value *Idx);
392 inline op_iterator idx_begin() { return op_begin()+1; }
393 inline const_op_iterator idx_begin() const { return op_begin()+1; }
394 inline op_iterator idx_end() { return op_end(); }
395 inline const_op_iterator idx_end() const { return op_end(); }
397 Value *getPointerOperand() {
398 return getOperand(0);
400 const Value *getPointerOperand() const {
401 return getOperand(0);
403 static unsigned getPointerOperandIndex() {
404 return 0U; // get index for modifying correct operand
407 inline unsigned getNumIndices() const { // Note: always non-negative
408 return getNumOperands() - 1;
411 inline bool hasIndices() const {
412 return getNumOperands() > 1;
415 // Methods for support type inquiry through isa, cast, and dyn_cast:
416 static inline bool classof(const GetElementPtrInst *) { return true; }
417 static inline bool classof(const Instruction *I) {
418 return (I->getOpcode() == Instruction::GetElementPtr);
420 static inline bool classof(const Value *V) {
421 return isa<Instruction>(V) && classof(cast<Instruction>(V));
425 //===----------------------------------------------------------------------===//
427 //===----------------------------------------------------------------------===//
429 /// This instruction compares its operands according to the predicate given
430 /// to the constructor. It only operates on integers, pointers, or packed
431 /// vectors of integrals. The two operands must be the same type.
432 /// @brief Represent an integer comparison operator.
433 class ICmpInst: public CmpInst {
435 /// This enumeration lists the possible predicates for the ICmpInst. The
436 /// values in the range 0-31 are reserved for FCmpInst while values in the
437 /// range 32-64 are reserved for ICmpInst. This is necessary to ensure the
438 /// predicate values are not overlapping between the classes.
440 ICMP_EQ = 32, ///< equal
441 ICMP_NE = 33, ///< not equal
442 ICMP_UGT = 34, ///< unsigned greater than
443 ICMP_UGE = 35, ///< unsigned greater or equal
444 ICMP_ULT = 36, ///< unsigned less than
445 ICMP_ULE = 37, ///< unsigned less or equal
446 ICMP_SGT = 38, ///< signed greater than
447 ICMP_SGE = 39, ///< signed greater or equal
448 ICMP_SLT = 40, ///< signed less than
449 ICMP_SLE = 41, ///< signed less or equal
450 FIRST_ICMP_PREDICATE = ICMP_EQ,
451 LAST_ICMP_PREDICATE = ICMP_SLE,
452 BAD_ICMP_PREDICATE = ICMP_SLE + 1
455 /// @brief Constructor with insert-before-instruction semantics.
457 Predicate pred, ///< The predicate to use for the comparison
458 Value *LHS, ///< The left-hand-side of the expression
459 Value *RHS, ///< The right-hand-side of the expression
460 const std::string &Name = "", ///< Name of the instruction
461 Instruction *InsertBefore = 0 ///< Where to insert
462 ) : CmpInst(Instruction::ICmp, pred, LHS, RHS, Name, InsertBefore) {
465 /// @brief Constructor with insert-at-block-end semantics.
467 Predicate pred, ///< The predicate to use for the comparison
468 Value *LHS, ///< The left-hand-side of the expression
469 Value *RHS, ///< The right-hand-side of the expression
470 const std::string &Name, ///< Name of the instruction
471 BasicBlock *InsertAtEnd ///< Block to insert into.
472 ) : CmpInst(Instruction::ICmp, pred, LHS, RHS, Name, InsertAtEnd) {
475 /// @brief Return the predicate for this instruction.
476 Predicate getPredicate() const { return Predicate(SubclassData); }
478 /// @brief Set the predicate for this instruction to the specified value.
479 void setPredicate(Predicate P) { SubclassData = P; }
481 /// For example, EQ -> NE, UGT -> ULE, SLT -> SGE, etc.
482 /// @returns the inverse predicate for the instruction's current predicate.
483 /// @brief Return the inverse of the instruction's predicate.
484 Predicate getInversePredicate() const {
485 return getInversePredicate(getPredicate());
488 /// For example, EQ -> NE, UGT -> ULE, SLT -> SGE, etc.
489 /// @returns the inverse predicate for predicate provided in \p pred.
490 /// @brief Return the inverse of a given predicate
491 static Predicate getInversePredicate(Predicate pred);
493 /// For example, EQ->EQ, SLE->SGE, ULT->UGT, etc.
494 /// @returns the predicate that would be the result of exchanging the two
495 /// operands of the ICmpInst instruction without changing the result
497 /// @brief Return the predicate as if the operands were swapped
498 Predicate getSwappedPredicate() const {
499 return getSwappedPredicate(getPredicate());
502 /// This is a static version that you can use without an instruction
504 /// @brief Return the predicate as if the operands were swapped.
505 static Predicate getSwappedPredicate(Predicate pred);
507 /// For example, EQ->EQ, SLE->SLE, UGT->SGT, etc.
508 /// @returns the predicate that would be the result if the operand were
509 /// regarded as signed.
510 /// @brief Return the signed version of the predicate
511 Predicate getSignedPredicate() const {
512 return getSignedPredicate(getPredicate());
515 /// This is a static version that you can use without an instruction.
516 /// @brief Return the signed version of the predicate.
517 static Predicate getSignedPredicate(Predicate pred);
519 /// This also tests for commutativity. If isEquality() returns true then
520 /// the predicate is also commutative.
521 /// @returns true if the predicate of this instruction is EQ or NE.
522 /// @brief Determine if this is an equality predicate.
523 bool isEquality() const {
524 return SubclassData == ICMP_EQ || SubclassData == ICMP_NE;
527 /// @returns true if the predicate of this ICmpInst is commutative
528 /// @brief Determine if this relation is commutative.
529 bool isCommutative() const { return isEquality(); }
531 /// @returns true if the predicate is relational (not EQ or NE).
532 /// @brief Determine if this a relational predicate.
533 bool isRelational() const {
534 return !isEquality();
537 /// @returns true if the predicate of this ICmpInst is signed, false otherwise
538 /// @brief Determine if this instruction's predicate is signed.
539 bool isSignedPredicate() { return isSignedPredicate(getPredicate()); }
541 /// @returns true if the predicate provided is signed, false otherwise
542 /// @brief Determine if the predicate is signed.
543 static bool isSignedPredicate(Predicate pred);
545 /// Exchange the two operands to this instruction in such a way that it does
546 /// not modify the semantics of the instruction. The predicate value may be
547 /// changed to retain the same result if the predicate is order dependent
549 /// @brief Swap operands and adjust predicate.
550 void swapOperands() {
551 SubclassData = getSwappedPredicate();
552 std::swap(Ops[0], Ops[1]);
555 // Methods for support type inquiry through isa, cast, and dyn_cast:
556 static inline bool classof(const ICmpInst *) { return true; }
557 static inline bool classof(const Instruction *I) {
558 return I->getOpcode() == Instruction::ICmp;
560 static inline bool classof(const Value *V) {
561 return isa<Instruction>(V) && classof(cast<Instruction>(V));
565 //===----------------------------------------------------------------------===//
567 //===----------------------------------------------------------------------===//
569 /// This instruction compares its operands according to the predicate given
570 /// to the constructor. It only operates on floating point values or packed
571 /// vectors of floating point values. The operands must be identical types.
572 /// @brief Represents a floating point comparison operator.
573 class FCmpInst: public CmpInst {
575 /// This enumeration lists the possible predicates for the FCmpInst. Values
576 /// in the range 0-31 are reserved for FCmpInst.
578 // Opcode U L G E Intuitive operation
579 FCMP_FALSE = 0, ///< 0 0 0 0 Always false (always folded)
580 FCMP_OEQ = 1, ///< 0 0 0 1 True if ordered and equal
581 FCMP_OGT = 2, ///< 0 0 1 0 True if ordered and greater than
582 FCMP_OGE = 3, ///< 0 0 1 1 True if ordered and greater than or equal
583 FCMP_OLT = 4, ///< 0 1 0 0 True if ordered and less than
584 FCMP_OLE = 5, ///< 0 1 0 1 True if ordered and less than or equal
585 FCMP_ONE = 6, ///< 0 1 1 0 True if ordered and operands are unequal
586 FCMP_ORD = 7, ///< 0 1 1 1 True if ordered (no nans)
587 FCMP_UNO = 8, ///< 1 0 0 0 True if unordered: isnan(X) | isnan(Y)
588 FCMP_UEQ = 9, ///< 1 0 0 1 True if unordered or equal
589 FCMP_UGT =10, ///< 1 0 1 0 True if unordered or greater than
590 FCMP_UGE =11, ///< 1 0 1 1 True if unordered, greater than, or equal
591 FCMP_ULT =12, ///< 1 1 0 0 True if unordered or less than
592 FCMP_ULE =13, ///< 1 1 0 1 True if unordered, less than, or equal
593 FCMP_UNE =14, ///< 1 1 1 0 True if unordered or not equal
594 FCMP_TRUE =15, ///< 1 1 1 1 Always true (always folded)
595 FIRST_FCMP_PREDICATE = FCMP_FALSE,
596 LAST_FCMP_PREDICATE = FCMP_TRUE,
597 BAD_FCMP_PREDICATE = FCMP_TRUE + 1
600 /// @brief Constructor with insert-before-instruction semantics.
602 Predicate pred, ///< The predicate to use for the comparison
603 Value *LHS, ///< The left-hand-side of the expression
604 Value *RHS, ///< The right-hand-side of the expression
605 const std::string &Name = "", ///< Name of the instruction
606 Instruction *InsertBefore = 0 ///< Where to insert
607 ) : CmpInst(Instruction::FCmp, pred, LHS, RHS, Name, InsertBefore) {
610 /// @brief Constructor with insert-at-block-end semantics.
612 Predicate pred, ///< The predicate to use for the comparison
613 Value *LHS, ///< The left-hand-side of the expression
614 Value *RHS, ///< The right-hand-side of the expression
615 const std::string &Name, ///< Name of the instruction
616 BasicBlock *InsertAtEnd ///< Block to insert into.
617 ) : CmpInst(Instruction::FCmp, pred, LHS, RHS, Name, InsertAtEnd) {
620 /// @brief Return the predicate for this instruction.
621 Predicate getPredicate() const { return Predicate(SubclassData); }
623 /// @brief Set the predicate for this instruction to the specified value.
624 void setPredicate(Predicate P) { SubclassData = P; }
626 /// For example, OEQ -> UNE, UGT -> OLE, OLT -> UGE, etc.
627 /// @returns the inverse predicate for the instructions current predicate.
628 /// @brief Return the inverse of the predicate
629 Predicate getInversePredicate() const {
630 return getInversePredicate(getPredicate());
633 /// For example, OEQ -> UNE, UGT -> OLE, OLT -> UGE, etc.
634 /// @returns the inverse predicate for \p pred.
635 /// @brief Return the inverse of a given predicate
636 static Predicate getInversePredicate(Predicate pred);
638 /// For example, OEQ->OEQ, ULE->UGE, OLT->OGT, etc.
639 /// @returns the predicate that would be the result of exchanging the two
640 /// operands of the ICmpInst instruction without changing the result
642 /// @brief Return the predicate as if the operands were swapped
643 Predicate getSwappedPredicate() const {
644 return getSwappedPredicate(getPredicate());
647 /// This is a static version that you can use without an instruction
649 /// @brief Return the predicate as if the operands were swapped.
650 static Predicate getSwappedPredicate(Predicate Opcode);
652 /// This also tests for commutativity. If isEquality() returns true then
653 /// the predicate is also commutative. Only the equality predicates are
655 /// @returns true if the predicate of this instruction is EQ or NE.
656 /// @brief Determine if this is an equality predicate.
657 bool isEquality() const {
658 return SubclassData == FCMP_OEQ || SubclassData == FCMP_ONE ||
659 SubclassData == FCMP_UEQ || SubclassData == FCMP_UNE;
661 bool isCommutative() const { return isEquality(); }
663 /// @returns true if the predicate is relational (not EQ or NE).
664 /// @brief Determine if this a relational predicate.
665 bool isRelational() const { return !isEquality(); }
667 /// Exchange the two operands to this instruction in such a way that it does
668 /// not modify the semantics of the instruction. The predicate value may be
669 /// changed to retain the same result if the predicate is order dependent
671 /// @brief Swap operands and adjust predicate.
672 void swapOperands() {
673 SubclassData = getSwappedPredicate();
674 std::swap(Ops[0], Ops[1]);
677 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
678 static inline bool classof(const FCmpInst *) { return true; }
679 static inline bool classof(const Instruction *I) {
680 return I->getOpcode() == Instruction::FCmp;
682 static inline bool classof(const Value *V) {
683 return isa<Instruction>(V) && classof(cast<Instruction>(V));
687 //===----------------------------------------------------------------------===//
689 //===----------------------------------------------------------------------===//
691 /// CallInst - This class represents a function call, abstracting a target
692 /// machine's calling convention. This class uses low bit of the SubClassData
693 /// field to indicate whether or not this is a tail call. The rest of the bits
694 /// hold the calling convention of the call.
696 class CallInst : public Instruction {
697 CallInst(const CallInst &CI);
698 void init(Value *Func, Value* const *Params, unsigned NumParams);
699 void init(Value *Func, Value *Actual1, Value *Actual2);
700 void init(Value *Func, Value *Actual);
701 void init(Value *Func);
704 CallInst(Value *F, Value* const *Args, unsigned NumArgs,
705 const std::string &Name = "", Instruction *InsertBefore = 0);
706 CallInst(Value *F, Value *const *Args, unsigned NumArgs,
707 const std::string &Name, BasicBlock *InsertAtEnd);
709 // Alternate CallInst ctors w/ two actuals, w/ one actual and no
710 // actuals, respectively.
711 CallInst(Value *F, Value *Actual1, Value *Actual2,
712 const std::string& Name = "", Instruction *InsertBefore = 0);
713 CallInst(Value *F, Value *Actual1, Value *Actual2,
714 const std::string& Name, BasicBlock *InsertAtEnd);
715 CallInst(Value *F, Value *Actual, const std::string& Name = "",
716 Instruction *InsertBefore = 0);
717 CallInst(Value *F, Value *Actual, const std::string& Name,
718 BasicBlock *InsertAtEnd);
719 explicit CallInst(Value *F, const std::string &Name = "",
720 Instruction *InsertBefore = 0);
721 CallInst(Value *F, const std::string &Name, BasicBlock *InsertAtEnd);
724 virtual CallInst *clone() const;
725 bool mayWriteToMemory() const { return true; }
727 bool isTailCall() const { return SubclassData & 1; }
728 void setTailCall(bool isTailCall = true) {
729 SubclassData = (SubclassData & ~1) | unsigned(isTailCall);
732 /// getCallingConv/setCallingConv - Get or set the calling convention of this
734 unsigned getCallingConv() const { return SubclassData >> 1; }
735 void setCallingConv(unsigned CC) {
736 SubclassData = (SubclassData & 1) | (CC << 1);
739 /// getCalledFunction - Return the function being called by this instruction
740 /// if it is a direct call. If it is a call through a function pointer,
742 Function *getCalledFunction() const {
743 return static_cast<Function*>(dyn_cast<Function>(getOperand(0)));
746 /// getCalledValue - Get a pointer to the function that is invoked by this
748 inline const Value *getCalledValue() const { return getOperand(0); }
749 inline Value *getCalledValue() { return getOperand(0); }
751 // Methods for support type inquiry through isa, cast, and dyn_cast:
752 static inline bool classof(const CallInst *) { return true; }
753 static inline bool classof(const Instruction *I) {
754 return I->getOpcode() == Instruction::Call;
756 static inline bool classof(const Value *V) {
757 return isa<Instruction>(V) && classof(cast<Instruction>(V));
761 //===----------------------------------------------------------------------===//
763 //===----------------------------------------------------------------------===//
765 /// SelectInst - This class represents the LLVM 'select' instruction.
767 class SelectInst : public Instruction {
770 void init(Value *C, Value *S1, Value *S2) {
771 Ops[0].init(C, this);
772 Ops[1].init(S1, this);
773 Ops[2].init(S2, this);
776 SelectInst(const SelectInst &SI)
777 : Instruction(SI.getType(), SI.getOpcode(), Ops, 3) {
778 init(SI.Ops[0], SI.Ops[1], SI.Ops[2]);
781 SelectInst(Value *C, Value *S1, Value *S2, const std::string &Name = "",
782 Instruction *InsertBefore = 0)
783 : Instruction(S1->getType(), Instruction::Select, Ops, 3,
784 Name, InsertBefore) {
787 SelectInst(Value *C, Value *S1, Value *S2, const std::string &Name,
788 BasicBlock *InsertAtEnd)
789 : Instruction(S1->getType(), Instruction::Select, Ops, 3,
794 Value *getCondition() const { return Ops[0]; }
795 Value *getTrueValue() const { return Ops[1]; }
796 Value *getFalseValue() const { return Ops[2]; }
798 /// Transparently provide more efficient getOperand methods.
799 Value *getOperand(unsigned i) const {
800 assert(i < 3 && "getOperand() out of range!");
803 void setOperand(unsigned i, Value *Val) {
804 assert(i < 3 && "setOperand() out of range!");
807 unsigned getNumOperands() const { return 3; }
809 OtherOps getOpcode() const {
810 return static_cast<OtherOps>(Instruction::getOpcode());
813 virtual SelectInst *clone() const;
815 // Methods for support type inquiry through isa, cast, and dyn_cast:
816 static inline bool classof(const SelectInst *) { return true; }
817 static inline bool classof(const Instruction *I) {
818 return I->getOpcode() == Instruction::Select;
820 static inline bool classof(const Value *V) {
821 return isa<Instruction>(V) && classof(cast<Instruction>(V));
825 //===----------------------------------------------------------------------===//
827 //===----------------------------------------------------------------------===//
829 /// VAArgInst - This class represents the va_arg llvm instruction, which returns
830 /// an argument of the specified type given a va_list and increments that list
832 class VAArgInst : public UnaryInstruction {
833 VAArgInst(const VAArgInst &VAA)
834 : UnaryInstruction(VAA.getType(), VAArg, VAA.getOperand(0)) {}
836 VAArgInst(Value *List, const Type *Ty, const std::string &Name = "",
837 Instruction *InsertBefore = 0)
838 : UnaryInstruction(Ty, VAArg, List, 0, InsertBefore) {
841 VAArgInst(Value *List, const Type *Ty, const std::string &Name,
842 BasicBlock *InsertAtEnd)
843 : UnaryInstruction(Ty, VAArg, List, 0, InsertAtEnd) {
847 virtual VAArgInst *clone() const;
848 bool mayWriteToMemory() const { return true; }
850 // Methods for support type inquiry through isa, cast, and dyn_cast:
851 static inline bool classof(const VAArgInst *) { return true; }
852 static inline bool classof(const Instruction *I) {
853 return I->getOpcode() == VAArg;
855 static inline bool classof(const Value *V) {
856 return isa<Instruction>(V) && classof(cast<Instruction>(V));
860 //===----------------------------------------------------------------------===//
861 // ExtractElementInst Class
862 //===----------------------------------------------------------------------===//
864 /// ExtractElementInst - This instruction extracts a single (scalar)
865 /// element from a PackedType value
867 class ExtractElementInst : public Instruction {
869 ExtractElementInst(const ExtractElementInst &EE) :
870 Instruction(EE.getType(), ExtractElement, Ops, 2) {
871 Ops[0].init(EE.Ops[0], this);
872 Ops[1].init(EE.Ops[1], this);
876 ExtractElementInst(Value *Vec, Value *Idx, const std::string &Name = "",
877 Instruction *InsertBefore = 0);
878 ExtractElementInst(Value *Vec, unsigned Idx, const std::string &Name = "",
879 Instruction *InsertBefore = 0);
880 ExtractElementInst(Value *Vec, Value *Idx, const std::string &Name,
881 BasicBlock *InsertAtEnd);
882 ExtractElementInst(Value *Vec, unsigned Idx, const std::string &Name,
883 BasicBlock *InsertAtEnd);
885 /// isValidOperands - Return true if an extractelement instruction can be
886 /// formed with the specified operands.
887 static bool isValidOperands(const Value *Vec, const Value *Idx);
889 virtual ExtractElementInst *clone() const;
891 virtual bool mayWriteToMemory() const { return false; }
893 /// Transparently provide more efficient getOperand methods.
894 Value *getOperand(unsigned i) const {
895 assert(i < 2 && "getOperand() out of range!");
898 void setOperand(unsigned i, Value *Val) {
899 assert(i < 2 && "setOperand() out of range!");
902 unsigned getNumOperands() const { return 2; }
904 // Methods for support type inquiry through isa, cast, and dyn_cast:
905 static inline bool classof(const ExtractElementInst *) { return true; }
906 static inline bool classof(const Instruction *I) {
907 return I->getOpcode() == Instruction::ExtractElement;
909 static inline bool classof(const Value *V) {
910 return isa<Instruction>(V) && classof(cast<Instruction>(V));
914 //===----------------------------------------------------------------------===//
915 // InsertElementInst Class
916 //===----------------------------------------------------------------------===//
918 /// InsertElementInst - This instruction inserts a single (scalar)
919 /// element into a PackedType value
921 class InsertElementInst : public Instruction {
923 InsertElementInst(const InsertElementInst &IE);
925 InsertElementInst(Value *Vec, Value *NewElt, Value *Idx,
926 const std::string &Name = "",Instruction *InsertBefore = 0);
927 InsertElementInst(Value *Vec, Value *NewElt, unsigned Idx,
928 const std::string &Name = "",Instruction *InsertBefore = 0);
929 InsertElementInst(Value *Vec, Value *NewElt, Value *Idx,
930 const std::string &Name, BasicBlock *InsertAtEnd);
931 InsertElementInst(Value *Vec, Value *NewElt, unsigned Idx,
932 const std::string &Name, BasicBlock *InsertAtEnd);
934 /// isValidOperands - Return true if an insertelement instruction can be
935 /// formed with the specified operands.
936 static bool isValidOperands(const Value *Vec, const Value *NewElt,
939 virtual InsertElementInst *clone() const;
941 virtual bool mayWriteToMemory() const { return false; }
943 /// getType - Overload to return most specific packed type.
945 inline const PackedType *getType() const {
946 return reinterpret_cast<const PackedType*>(Instruction::getType());
949 /// Transparently provide more efficient getOperand methods.
950 Value *getOperand(unsigned i) const {
951 assert(i < 3 && "getOperand() out of range!");
954 void setOperand(unsigned i, Value *Val) {
955 assert(i < 3 && "setOperand() out of range!");
958 unsigned getNumOperands() const { return 3; }
960 // Methods for support type inquiry through isa, cast, and dyn_cast:
961 static inline bool classof(const InsertElementInst *) { return true; }
962 static inline bool classof(const Instruction *I) {
963 return I->getOpcode() == Instruction::InsertElement;
965 static inline bool classof(const Value *V) {
966 return isa<Instruction>(V) && classof(cast<Instruction>(V));
970 //===----------------------------------------------------------------------===//
971 // ShuffleVectorInst Class
972 //===----------------------------------------------------------------------===//
974 /// ShuffleVectorInst - This instruction constructs a fixed permutation of two
977 class ShuffleVectorInst : public Instruction {
979 ShuffleVectorInst(const ShuffleVectorInst &IE);
981 ShuffleVectorInst(Value *V1, Value *V2, Value *Mask,
982 const std::string &Name = "", Instruction *InsertBefor = 0);
983 ShuffleVectorInst(Value *V1, Value *V2, Value *Mask,
984 const std::string &Name, BasicBlock *InsertAtEnd);
986 /// isValidOperands - Return true if a shufflevector instruction can be
987 /// formed with the specified operands.
988 static bool isValidOperands(const Value *V1, const Value *V2,
991 virtual ShuffleVectorInst *clone() const;
993 virtual bool mayWriteToMemory() const { return false; }
995 /// getType - Overload to return most specific packed type.
997 inline const PackedType *getType() const {
998 return reinterpret_cast<const PackedType*>(Instruction::getType());
1001 /// Transparently provide more efficient getOperand methods.
1002 Value *getOperand(unsigned i) const {
1003 assert(i < 3 && "getOperand() out of range!");
1006 void setOperand(unsigned i, Value *Val) {
1007 assert(i < 3 && "setOperand() out of range!");
1010 unsigned getNumOperands() const { return 3; }
1012 // Methods for support type inquiry through isa, cast, and dyn_cast:
1013 static inline bool classof(const ShuffleVectorInst *) { return true; }
1014 static inline bool classof(const Instruction *I) {
1015 return I->getOpcode() == Instruction::ShuffleVector;
1017 static inline bool classof(const Value *V) {
1018 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1023 //===----------------------------------------------------------------------===//
1025 //===----------------------------------------------------------------------===//
1027 // PHINode - The PHINode class is used to represent the magical mystical PHI
1028 // node, that can not exist in nature, but can be synthesized in a computer
1029 // scientist's overactive imagination.
1031 class PHINode : public Instruction {
1032 /// ReservedSpace - The number of operands actually allocated. NumOperands is
1033 /// the number actually in use.
1034 unsigned ReservedSpace;
1035 PHINode(const PHINode &PN);
1037 explicit PHINode(const Type *Ty, const std::string &Name = "",
1038 Instruction *InsertBefore = 0)
1039 : Instruction(Ty, Instruction::PHI, 0, 0, Name, InsertBefore),
1043 PHINode(const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd)
1044 : Instruction(Ty, Instruction::PHI, 0, 0, Name, InsertAtEnd),
1050 /// reserveOperandSpace - This method can be used to avoid repeated
1051 /// reallocation of PHI operand lists by reserving space for the correct
1052 /// number of operands before adding them. Unlike normal vector reserves,
1053 /// this method can also be used to trim the operand space.
1054 void reserveOperandSpace(unsigned NumValues) {
1055 resizeOperands(NumValues*2);
1058 virtual PHINode *clone() const;
1060 /// getNumIncomingValues - Return the number of incoming edges
1062 unsigned getNumIncomingValues() const { return getNumOperands()/2; }
1064 /// getIncomingValue - Return incoming value number x
1066 Value *getIncomingValue(unsigned i) const {
1067 assert(i*2 < getNumOperands() && "Invalid value number!");
1068 return getOperand(i*2);
1070 void setIncomingValue(unsigned i, Value *V) {
1071 assert(i*2 < getNumOperands() && "Invalid value number!");
1074 unsigned getOperandNumForIncomingValue(unsigned i) {
1078 /// getIncomingBlock - Return incoming basic block number x
1080 BasicBlock *getIncomingBlock(unsigned i) const {
1081 return reinterpret_cast<BasicBlock*>(getOperand(i*2+1));
1083 void setIncomingBlock(unsigned i, BasicBlock *BB) {
1084 setOperand(i*2+1, reinterpret_cast<Value*>(BB));
1086 unsigned getOperandNumForIncomingBlock(unsigned i) {
1090 /// addIncoming - Add an incoming value to the end of the PHI list
1092 void addIncoming(Value *V, BasicBlock *BB) {
1093 assert(getType() == V->getType() &&
1094 "All operands to PHI node must be the same type as the PHI node!");
1095 unsigned OpNo = NumOperands;
1096 if (OpNo+2 > ReservedSpace)
1097 resizeOperands(0); // Get more space!
1098 // Initialize some new operands.
1099 NumOperands = OpNo+2;
1100 OperandList[OpNo].init(V, this);
1101 OperandList[OpNo+1].init(reinterpret_cast<Value*>(BB), this);
1104 /// removeIncomingValue - Remove an incoming value. This is useful if a
1105 /// predecessor basic block is deleted. The value removed is returned.
1107 /// If the last incoming value for a PHI node is removed (and DeletePHIIfEmpty
1108 /// is true), the PHI node is destroyed and any uses of it are replaced with
1109 /// dummy values. The only time there should be zero incoming values to a PHI
1110 /// node is when the block is dead, so this strategy is sound.
1112 Value *removeIncomingValue(unsigned Idx, bool DeletePHIIfEmpty = true);
1114 Value *removeIncomingValue(const BasicBlock *BB, bool DeletePHIIfEmpty =true){
1115 int Idx = getBasicBlockIndex(BB);
1116 assert(Idx >= 0 && "Invalid basic block argument to remove!");
1117 return removeIncomingValue(Idx, DeletePHIIfEmpty);
1120 /// getBasicBlockIndex - Return the first index of the specified basic
1121 /// block in the value list for this PHI. Returns -1 if no instance.
1123 int getBasicBlockIndex(const BasicBlock *BB) const {
1124 Use *OL = OperandList;
1125 for (unsigned i = 0, e = getNumOperands(); i != e; i += 2)
1126 if (OL[i+1] == reinterpret_cast<const Value*>(BB)) return i/2;
1130 Value *getIncomingValueForBlock(const BasicBlock *BB) const {
1131 return getIncomingValue(getBasicBlockIndex(BB));
1134 /// hasConstantValue - If the specified PHI node always merges together the
1135 /// same value, return the value, otherwise return null.
1137 Value *hasConstantValue(bool AllowNonDominatingInstruction = false) const;
1139 /// Methods for support type inquiry through isa, cast, and dyn_cast:
1140 static inline bool classof(const PHINode *) { return true; }
1141 static inline bool classof(const Instruction *I) {
1142 return I->getOpcode() == Instruction::PHI;
1144 static inline bool classof(const Value *V) {
1145 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1148 void resizeOperands(unsigned NumOperands);
1151 //===----------------------------------------------------------------------===//
1153 //===----------------------------------------------------------------------===//
1155 //===---------------------------------------------------------------------------
1156 /// ReturnInst - Return a value (possibly void), from a function. Execution
1157 /// does not continue in this function any longer.
1159 class ReturnInst : public TerminatorInst {
1160 Use RetVal; // Possibly null retval.
1161 ReturnInst(const ReturnInst &RI) : TerminatorInst(Instruction::Ret, &RetVal,
1162 RI.getNumOperands()) {
1163 if (RI.getNumOperands())
1164 RetVal.init(RI.RetVal, this);
1167 void init(Value *RetVal);
1170 // ReturnInst constructors:
1171 // ReturnInst() - 'ret void' instruction
1172 // ReturnInst( null) - 'ret void' instruction
1173 // ReturnInst(Value* X) - 'ret X' instruction
1174 // ReturnInst( null, Inst *) - 'ret void' instruction, insert before I
1175 // ReturnInst(Value* X, Inst *I) - 'ret X' instruction, insert before I
1176 // ReturnInst( null, BB *B) - 'ret void' instruction, insert @ end of BB
1177 // ReturnInst(Value* X, BB *B) - 'ret X' instruction, insert @ end of BB
1179 // NOTE: If the Value* passed is of type void then the constructor behaves as
1180 // if it was passed NULL.
1181 explicit ReturnInst(Value *retVal = 0, Instruction *InsertBefore = 0)
1182 : TerminatorInst(Instruction::Ret, &RetVal, 0, InsertBefore) {
1185 ReturnInst(Value *retVal, BasicBlock *InsertAtEnd)
1186 : TerminatorInst(Instruction::Ret, &RetVal, 0, InsertAtEnd) {
1189 explicit ReturnInst(BasicBlock *InsertAtEnd)
1190 : TerminatorInst(Instruction::Ret, &RetVal, 0, InsertAtEnd) {
1193 virtual ReturnInst *clone() const;
1195 // Transparently provide more efficient getOperand methods.
1196 Value *getOperand(unsigned i) const {
1197 assert(i < getNumOperands() && "getOperand() out of range!");
1200 void setOperand(unsigned i, Value *Val) {
1201 assert(i < getNumOperands() && "setOperand() out of range!");
1205 Value *getReturnValue() const { return RetVal; }
1207 unsigned getNumSuccessors() const { return 0; }
1209 // Methods for support type inquiry through isa, cast, and dyn_cast:
1210 static inline bool classof(const ReturnInst *) { return true; }
1211 static inline bool classof(const Instruction *I) {
1212 return (I->getOpcode() == Instruction::Ret);
1214 static inline bool classof(const Value *V) {
1215 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1218 virtual BasicBlock *getSuccessorV(unsigned idx) const;
1219 virtual unsigned getNumSuccessorsV() const;
1220 virtual void setSuccessorV(unsigned idx, BasicBlock *B);
1223 //===----------------------------------------------------------------------===//
1225 //===----------------------------------------------------------------------===//
1227 //===---------------------------------------------------------------------------
1228 /// BranchInst - Conditional or Unconditional Branch instruction.
1230 class BranchInst : public TerminatorInst {
1231 /// Ops list - Branches are strange. The operands are ordered:
1232 /// TrueDest, FalseDest, Cond. This makes some accessors faster because
1233 /// they don't have to check for cond/uncond branchness.
1235 BranchInst(const BranchInst &BI);
1238 // BranchInst constructors (where {B, T, F} are blocks, and C is a condition):
1239 // BranchInst(BB *B) - 'br B'
1240 // BranchInst(BB* T, BB *F, Value *C) - 'br C, T, F'
1241 // BranchInst(BB* B, Inst *I) - 'br B' insert before I
1242 // BranchInst(BB* T, BB *F, Value *C, Inst *I) - 'br C, T, F', insert before I
1243 // BranchInst(BB* B, BB *I) - 'br B' insert at end
1244 // BranchInst(BB* T, BB *F, Value *C, BB *I) - 'br C, T, F', insert at end
1245 explicit BranchInst(BasicBlock *IfTrue, Instruction *InsertBefore = 0)
1246 : TerminatorInst(Instruction::Br, Ops, 1, InsertBefore) {
1247 assert(IfTrue != 0 && "Branch destination may not be null!");
1248 Ops[0].init(reinterpret_cast<Value*>(IfTrue), this);
1250 BranchInst(BasicBlock *IfTrue, BasicBlock *IfFalse, Value *Cond,
1251 Instruction *InsertBefore = 0)
1252 : TerminatorInst(Instruction::Br, Ops, 3, InsertBefore) {
1253 Ops[0].init(reinterpret_cast<Value*>(IfTrue), this);
1254 Ops[1].init(reinterpret_cast<Value*>(IfFalse), this);
1255 Ops[2].init(Cond, this);
1261 BranchInst(BasicBlock *IfTrue, BasicBlock *InsertAtEnd)
1262 : TerminatorInst(Instruction::Br, Ops, 1, InsertAtEnd) {
1263 assert(IfTrue != 0 && "Branch destination may not be null!");
1264 Ops[0].init(reinterpret_cast<Value*>(IfTrue), this);
1267 BranchInst(BasicBlock *IfTrue, BasicBlock *IfFalse, Value *Cond,
1268 BasicBlock *InsertAtEnd)
1269 : TerminatorInst(Instruction::Br, Ops, 3, InsertAtEnd) {
1270 Ops[0].init(reinterpret_cast<Value*>(IfTrue), this);
1271 Ops[1].init(reinterpret_cast<Value*>(IfFalse), this);
1272 Ops[2].init(Cond, this);
1279 /// Transparently provide more efficient getOperand methods.
1280 Value *getOperand(unsigned i) const {
1281 assert(i < getNumOperands() && "getOperand() out of range!");
1284 void setOperand(unsigned i, Value *Val) {
1285 assert(i < getNumOperands() && "setOperand() out of range!");
1289 virtual BranchInst *clone() const;
1291 inline bool isUnconditional() const { return getNumOperands() == 1; }
1292 inline bool isConditional() const { return getNumOperands() == 3; }
1294 inline Value *getCondition() const {
1295 assert(isConditional() && "Cannot get condition of an uncond branch!");
1296 return getOperand(2);
1299 void setCondition(Value *V) {
1300 assert(isConditional() && "Cannot set condition of unconditional branch!");
1304 // setUnconditionalDest - Change the current branch to an unconditional branch
1305 // targeting the specified block.
1306 // FIXME: Eliminate this ugly method.
1307 void setUnconditionalDest(BasicBlock *Dest) {
1308 if (isConditional()) { // Convert this to an uncond branch.
1313 setOperand(0, reinterpret_cast<Value*>(Dest));
1316 unsigned getNumSuccessors() const { return 1+isConditional(); }
1318 BasicBlock *getSuccessor(unsigned i) const {
1319 assert(i < getNumSuccessors() && "Successor # out of range for Branch!");
1320 return (i == 0) ? cast<BasicBlock>(getOperand(0)) :
1321 cast<BasicBlock>(getOperand(1));
1324 void setSuccessor(unsigned idx, BasicBlock *NewSucc) {
1325 assert(idx < getNumSuccessors() && "Successor # out of range for Branch!");
1326 setOperand(idx, reinterpret_cast<Value*>(NewSucc));
1329 // Methods for support type inquiry through isa, cast, and dyn_cast:
1330 static inline bool classof(const BranchInst *) { return true; }
1331 static inline bool classof(const Instruction *I) {
1332 return (I->getOpcode() == Instruction::Br);
1334 static inline bool classof(const Value *V) {
1335 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1338 virtual BasicBlock *getSuccessorV(unsigned idx) const;
1339 virtual unsigned getNumSuccessorsV() const;
1340 virtual void setSuccessorV(unsigned idx, BasicBlock *B);
1343 //===----------------------------------------------------------------------===//
1345 //===----------------------------------------------------------------------===//
1347 //===---------------------------------------------------------------------------
1348 /// SwitchInst - Multiway switch
1350 class SwitchInst : public TerminatorInst {
1351 unsigned ReservedSpace;
1352 // Operand[0] = Value to switch on
1353 // Operand[1] = Default basic block destination
1354 // Operand[2n ] = Value to match
1355 // Operand[2n+1] = BasicBlock to go to on match
1356 SwitchInst(const SwitchInst &RI);
1357 void init(Value *Value, BasicBlock *Default, unsigned NumCases);
1358 void resizeOperands(unsigned No);
1360 /// SwitchInst ctor - Create a new switch instruction, specifying a value to
1361 /// switch on and a default destination. The number of additional cases can
1362 /// be specified here to make memory allocation more efficient. This
1363 /// constructor can also autoinsert before another instruction.
1364 SwitchInst(Value *Value, BasicBlock *Default, unsigned NumCases,
1365 Instruction *InsertBefore = 0)
1366 : TerminatorInst(Instruction::Switch, 0, 0, InsertBefore) {
1367 init(Value, Default, NumCases);
1370 /// SwitchInst ctor - Create a new switch instruction, specifying a value to
1371 /// switch on and a default destination. The number of additional cases can
1372 /// be specified here to make memory allocation more efficient. This
1373 /// constructor also autoinserts at the end of the specified BasicBlock.
1374 SwitchInst(Value *Value, BasicBlock *Default, unsigned NumCases,
1375 BasicBlock *InsertAtEnd)
1376 : TerminatorInst(Instruction::Switch, 0, 0, InsertAtEnd) {
1377 init(Value, Default, NumCases);
1382 // Accessor Methods for Switch stmt
1383 inline Value *getCondition() const { return getOperand(0); }
1384 void setCondition(Value *V) { setOperand(0, V); }
1386 inline BasicBlock *getDefaultDest() const {
1387 return cast<BasicBlock>(getOperand(1));
1390 /// getNumCases - return the number of 'cases' in this switch instruction.
1391 /// Note that case #0 is always the default case.
1392 unsigned getNumCases() const {
1393 return getNumOperands()/2;
1396 /// getCaseValue - Return the specified case value. Note that case #0, the
1397 /// default destination, does not have a case value.
1398 ConstantInt *getCaseValue(unsigned i) {
1399 assert(i && i < getNumCases() && "Illegal case value to get!");
1400 return getSuccessorValue(i);
1403 /// getCaseValue - Return the specified case value. Note that case #0, the
1404 /// default destination, does not have a case value.
1405 const ConstantInt *getCaseValue(unsigned i) const {
1406 assert(i && i < getNumCases() && "Illegal case value to get!");
1407 return getSuccessorValue(i);
1410 /// findCaseValue - Search all of the case values for the specified constant.
1411 /// If it is explicitly handled, return the case number of it, otherwise
1412 /// return 0 to indicate that it is handled by the default handler.
1413 unsigned findCaseValue(const ConstantInt *C) const {
1414 for (unsigned i = 1, e = getNumCases(); i != e; ++i)
1415 if (getCaseValue(i) == C)
1420 /// findCaseDest - Finds the unique case value for a given successor. Returns
1421 /// null if the successor is not found, not unique, or is the default case.
1422 ConstantInt *findCaseDest(BasicBlock *BB) {
1423 if (BB == getDefaultDest()) return NULL;
1425 ConstantInt *CI = NULL;
1426 for (unsigned i = 1, e = getNumCases(); i != e; ++i) {
1427 if (getSuccessor(i) == BB) {
1428 if (CI) return NULL; // Multiple cases lead to BB.
1429 else CI = getCaseValue(i);
1435 /// addCase - Add an entry to the switch instruction...
1437 void addCase(ConstantInt *OnVal, BasicBlock *Dest);
1439 /// removeCase - This method removes the specified successor from the switch
1440 /// instruction. Note that this cannot be used to remove the default
1441 /// destination (successor #0).
1443 void removeCase(unsigned idx);
1445 virtual SwitchInst *clone() const;
1447 unsigned getNumSuccessors() const { return getNumOperands()/2; }
1448 BasicBlock *getSuccessor(unsigned idx) const {
1449 assert(idx < getNumSuccessors() &&"Successor idx out of range for switch!");
1450 return cast<BasicBlock>(getOperand(idx*2+1));
1452 void setSuccessor(unsigned idx, BasicBlock *NewSucc) {
1453 assert(idx < getNumSuccessors() && "Successor # out of range for switch!");
1454 setOperand(idx*2+1, reinterpret_cast<Value*>(NewSucc));
1457 // getSuccessorValue - Return the value associated with the specified
1459 inline ConstantInt *getSuccessorValue(unsigned idx) const {
1460 assert(idx < getNumSuccessors() && "Successor # out of range!");
1461 return reinterpret_cast<ConstantInt*>(getOperand(idx*2));
1464 // Methods for support type inquiry through isa, cast, and dyn_cast:
1465 static inline bool classof(const SwitchInst *) { return true; }
1466 static inline bool classof(const Instruction *I) {
1467 return I->getOpcode() == Instruction::Switch;
1469 static inline bool classof(const Value *V) {
1470 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1473 virtual BasicBlock *getSuccessorV(unsigned idx) const;
1474 virtual unsigned getNumSuccessorsV() const;
1475 virtual void setSuccessorV(unsigned idx, BasicBlock *B);
1478 //===----------------------------------------------------------------------===//
1480 //===----------------------------------------------------------------------===//
1482 //===---------------------------------------------------------------------------
1484 /// InvokeInst - Invoke instruction. The SubclassData field is used to hold the
1485 /// calling convention of the call.
1487 class InvokeInst : public TerminatorInst {
1488 InvokeInst(const InvokeInst &BI);
1489 void init(Value *Fn, BasicBlock *IfNormal, BasicBlock *IfException,
1490 Value* const *Args, unsigned NumArgs);
1492 InvokeInst(Value *Fn, BasicBlock *IfNormal, BasicBlock *IfException,
1493 Value* const* Args, unsigned NumArgs, const std::string &Name = "",
1494 Instruction *InsertBefore = 0);
1495 InvokeInst(Value *Fn, BasicBlock *IfNormal, BasicBlock *IfException,
1496 Value* const* Args, unsigned NumArgs, const std::string &Name,
1497 BasicBlock *InsertAtEnd);
1500 virtual InvokeInst *clone() const;
1502 bool mayWriteToMemory() const { return true; }
1504 /// getCallingConv/setCallingConv - Get or set the calling convention of this
1506 unsigned getCallingConv() const { return SubclassData; }
1507 void setCallingConv(unsigned CC) {
1511 /// getCalledFunction - Return the function called, or null if this is an
1512 /// indirect function invocation.
1514 Function *getCalledFunction() const {
1515 return dyn_cast<Function>(getOperand(0));
1518 // getCalledValue - Get a pointer to a function that is invoked by this inst.
1519 inline Value *getCalledValue() const { return getOperand(0); }
1521 // get*Dest - Return the destination basic blocks...
1522 BasicBlock *getNormalDest() const {
1523 return cast<BasicBlock>(getOperand(1));
1525 BasicBlock *getUnwindDest() const {
1526 return cast<BasicBlock>(getOperand(2));
1528 void setNormalDest(BasicBlock *B) {
1529 setOperand(1, reinterpret_cast<Value*>(B));
1532 void setUnwindDest(BasicBlock *B) {
1533 setOperand(2, reinterpret_cast<Value*>(B));
1536 inline BasicBlock *getSuccessor(unsigned i) const {
1537 assert(i < 2 && "Successor # out of range for invoke!");
1538 return i == 0 ? getNormalDest() : getUnwindDest();
1541 void setSuccessor(unsigned idx, BasicBlock *NewSucc) {
1542 assert(idx < 2 && "Successor # out of range for invoke!");
1543 setOperand(idx+1, reinterpret_cast<Value*>(NewSucc));
1546 unsigned getNumSuccessors() const { return 2; }
1548 // Methods for support type inquiry through isa, cast, and dyn_cast:
1549 static inline bool classof(const InvokeInst *) { return true; }
1550 static inline bool classof(const Instruction *I) {
1551 return (I->getOpcode() == Instruction::Invoke);
1553 static inline bool classof(const Value *V) {
1554 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1557 virtual BasicBlock *getSuccessorV(unsigned idx) const;
1558 virtual unsigned getNumSuccessorsV() const;
1559 virtual void setSuccessorV(unsigned idx, BasicBlock *B);
1563 //===----------------------------------------------------------------------===//
1565 //===----------------------------------------------------------------------===//
1567 //===---------------------------------------------------------------------------
1568 /// UnwindInst - Immediately exit the current function, unwinding the stack
1569 /// until an invoke instruction is found.
1571 class UnwindInst : public TerminatorInst {
1573 explicit UnwindInst(Instruction *InsertBefore = 0)
1574 : TerminatorInst(Instruction::Unwind, 0, 0, InsertBefore) {
1576 explicit UnwindInst(BasicBlock *InsertAtEnd)
1577 : TerminatorInst(Instruction::Unwind, 0, 0, InsertAtEnd) {
1580 virtual UnwindInst *clone() const;
1582 unsigned getNumSuccessors() const { return 0; }
1584 // Methods for support type inquiry through isa, cast, and dyn_cast:
1585 static inline bool classof(const UnwindInst *) { return true; }
1586 static inline bool classof(const Instruction *I) {
1587 return I->getOpcode() == Instruction::Unwind;
1589 static inline bool classof(const Value *V) {
1590 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1593 virtual BasicBlock *getSuccessorV(unsigned idx) const;
1594 virtual unsigned getNumSuccessorsV() const;
1595 virtual void setSuccessorV(unsigned idx, BasicBlock *B);
1598 //===----------------------------------------------------------------------===//
1599 // UnreachableInst Class
1600 //===----------------------------------------------------------------------===//
1602 //===---------------------------------------------------------------------------
1603 /// UnreachableInst - This function has undefined behavior. In particular, the
1604 /// presence of this instruction indicates some higher level knowledge that the
1605 /// end of the block cannot be reached.
1607 class UnreachableInst : public TerminatorInst {
1609 explicit UnreachableInst(Instruction *InsertBefore = 0)
1610 : TerminatorInst(Instruction::Unreachable, 0, 0, InsertBefore) {
1612 explicit UnreachableInst(BasicBlock *InsertAtEnd)
1613 : TerminatorInst(Instruction::Unreachable, 0, 0, InsertAtEnd) {
1616 virtual UnreachableInst *clone() const;
1618 unsigned getNumSuccessors() const { return 0; }
1620 // Methods for support type inquiry through isa, cast, and dyn_cast:
1621 static inline bool classof(const UnreachableInst *) { return true; }
1622 static inline bool classof(const Instruction *I) {
1623 return I->getOpcode() == Instruction::Unreachable;
1625 static inline bool classof(const Value *V) {
1626 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1629 virtual BasicBlock *getSuccessorV(unsigned idx) const;
1630 virtual unsigned getNumSuccessorsV() const;
1631 virtual void setSuccessorV(unsigned idx, BasicBlock *B);
1634 //===----------------------------------------------------------------------===//
1636 //===----------------------------------------------------------------------===//
1638 /// @brief This class represents a truncation of integer types.
1639 class TruncInst : public CastInst {
1640 /// Private copy constructor
1641 TruncInst(const TruncInst &CI)
1642 : CastInst(CI.getType(), Trunc, CI.getOperand(0)) {
1645 /// @brief Constructor with insert-before-instruction semantics
1647 Value *S, ///< The value to be truncated
1648 const Type *Ty, ///< The (smaller) type to truncate to
1649 const std::string &Name = "", ///< A name for the new instruction
1650 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
1653 /// @brief Constructor with insert-at-end-of-block semantics
1655 Value *S, ///< The value to be truncated
1656 const Type *Ty, ///< The (smaller) type to truncate to
1657 const std::string &Name, ///< A name for the new instruction
1658 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
1661 /// @brief Clone an identical TruncInst
1662 virtual CastInst *clone() const;
1664 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
1665 static inline bool classof(const TruncInst *) { return true; }
1666 static inline bool classof(const Instruction *I) {
1667 return I->getOpcode() == Trunc;
1669 static inline bool classof(const Value *V) {
1670 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1674 //===----------------------------------------------------------------------===//
1676 //===----------------------------------------------------------------------===//
1678 /// @brief This class represents zero extension of integer types.
1679 class ZExtInst : public CastInst {
1680 /// @brief Private copy constructor
1681 ZExtInst(const ZExtInst &CI)
1682 : CastInst(CI.getType(), ZExt, CI.getOperand(0)) {
1685 /// @brief Constructor with insert-before-instruction semantics
1687 Value *S, ///< The value to be zero extended
1688 const Type *Ty, ///< The type to zero extend to
1689 const std::string &Name = "", ///< A name for the new instruction
1690 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
1693 /// @brief Constructor with insert-at-end semantics.
1695 Value *S, ///< The value to be zero extended
1696 const Type *Ty, ///< The type to zero extend to
1697 const std::string &Name, ///< A name for the new instruction
1698 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
1701 /// @brief Clone an identical ZExtInst
1702 virtual CastInst *clone() const;
1704 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
1705 static inline bool classof(const ZExtInst *) { return true; }
1706 static inline bool classof(const Instruction *I) {
1707 return I->getOpcode() == ZExt;
1709 static inline bool classof(const Value *V) {
1710 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1714 //===----------------------------------------------------------------------===//
1716 //===----------------------------------------------------------------------===//
1718 /// @brief This class represents a sign extension of integer types.
1719 class SExtInst : public CastInst {
1720 /// @brief Private copy constructor
1721 SExtInst(const SExtInst &CI)
1722 : CastInst(CI.getType(), SExt, CI.getOperand(0)) {
1725 /// @brief Constructor with insert-before-instruction semantics
1727 Value *S, ///< The value to be sign extended
1728 const Type *Ty, ///< The type to sign extend to
1729 const std::string &Name = "", ///< A name for the new instruction
1730 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
1733 /// @brief Constructor with insert-at-end-of-block semantics
1735 Value *S, ///< The value to be sign extended
1736 const Type *Ty, ///< The type to sign extend to
1737 const std::string &Name, ///< A name for the new instruction
1738 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
1741 /// @brief Clone an identical SExtInst
1742 virtual CastInst *clone() const;
1744 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
1745 static inline bool classof(const SExtInst *) { return true; }
1746 static inline bool classof(const Instruction *I) {
1747 return I->getOpcode() == SExt;
1749 static inline bool classof(const Value *V) {
1750 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1754 //===----------------------------------------------------------------------===//
1755 // FPTruncInst Class
1756 //===----------------------------------------------------------------------===//
1758 /// @brief This class represents a truncation of floating point types.
1759 class FPTruncInst : public CastInst {
1760 FPTruncInst(const FPTruncInst &CI)
1761 : CastInst(CI.getType(), FPTrunc, CI.getOperand(0)) {
1764 /// @brief Constructor with insert-before-instruction semantics
1766 Value *S, ///< The value to be truncated
1767 const Type *Ty, ///< The type to truncate to
1768 const std::string &Name = "", ///< A name for the new instruction
1769 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
1772 /// @brief Constructor with insert-before-instruction semantics
1774 Value *S, ///< The value to be truncated
1775 const Type *Ty, ///< The type to truncate to
1776 const std::string &Name, ///< A name for the new instruction
1777 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
1780 /// @brief Clone an identical FPTruncInst
1781 virtual CastInst *clone() const;
1783 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
1784 static inline bool classof(const FPTruncInst *) { return true; }
1785 static inline bool classof(const Instruction *I) {
1786 return I->getOpcode() == FPTrunc;
1788 static inline bool classof(const Value *V) {
1789 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1793 //===----------------------------------------------------------------------===//
1795 //===----------------------------------------------------------------------===//
1797 /// @brief This class represents an extension of floating point types.
1798 class FPExtInst : public CastInst {
1799 FPExtInst(const FPExtInst &CI)
1800 : CastInst(CI.getType(), FPExt, CI.getOperand(0)) {
1803 /// @brief Constructor with insert-before-instruction semantics
1805 Value *S, ///< The value to be extended
1806 const Type *Ty, ///< The type to extend to
1807 const std::string &Name = "", ///< A name for the new instruction
1808 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
1811 /// @brief Constructor with insert-at-end-of-block semantics
1813 Value *S, ///< The value to be extended
1814 const Type *Ty, ///< The type to extend to
1815 const std::string &Name, ///< A name for the new instruction
1816 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
1819 /// @brief Clone an identical FPExtInst
1820 virtual CastInst *clone() const;
1822 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
1823 static inline bool classof(const FPExtInst *) { return true; }
1824 static inline bool classof(const Instruction *I) {
1825 return I->getOpcode() == FPExt;
1827 static inline bool classof(const Value *V) {
1828 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1832 //===----------------------------------------------------------------------===//
1834 //===----------------------------------------------------------------------===//
1836 /// @brief This class represents a cast unsigned integer to floating point.
1837 class UIToFPInst : public CastInst {
1838 UIToFPInst(const UIToFPInst &CI)
1839 : CastInst(CI.getType(), UIToFP, CI.getOperand(0)) {
1842 /// @brief Constructor with insert-before-instruction semantics
1844 Value *S, ///< The value to be converted
1845 const Type *Ty, ///< The type to convert to
1846 const std::string &Name = "", ///< A name for the new instruction
1847 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
1850 /// @brief Constructor with insert-at-end-of-block semantics
1852 Value *S, ///< The value to be converted
1853 const Type *Ty, ///< The type to convert to
1854 const std::string &Name, ///< A name for the new instruction
1855 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
1858 /// @brief Clone an identical UIToFPInst
1859 virtual CastInst *clone() const;
1861 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
1862 static inline bool classof(const UIToFPInst *) { return true; }
1863 static inline bool classof(const Instruction *I) {
1864 return I->getOpcode() == UIToFP;
1866 static inline bool classof(const Value *V) {
1867 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1871 //===----------------------------------------------------------------------===//
1873 //===----------------------------------------------------------------------===//
1875 /// @brief This class represents a cast from signed integer to floating point.
1876 class SIToFPInst : public CastInst {
1877 SIToFPInst(const SIToFPInst &CI)
1878 : CastInst(CI.getType(), SIToFP, CI.getOperand(0)) {
1881 /// @brief Constructor with insert-before-instruction semantics
1883 Value *S, ///< The value to be converted
1884 const Type *Ty, ///< The type to convert to
1885 const std::string &Name = "", ///< A name for the new instruction
1886 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
1889 /// @brief Constructor with insert-at-end-of-block semantics
1891 Value *S, ///< The value to be converted
1892 const Type *Ty, ///< The type to convert to
1893 const std::string &Name, ///< A name for the new instruction
1894 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
1897 /// @brief Clone an identical SIToFPInst
1898 virtual CastInst *clone() const;
1900 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
1901 static inline bool classof(const SIToFPInst *) { return true; }
1902 static inline bool classof(const Instruction *I) {
1903 return I->getOpcode() == SIToFP;
1905 static inline bool classof(const Value *V) {
1906 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1910 //===----------------------------------------------------------------------===//
1912 //===----------------------------------------------------------------------===//
1914 /// @brief This class represents a cast from floating point to unsigned integer
1915 class FPToUIInst : public CastInst {
1916 FPToUIInst(const FPToUIInst &CI)
1917 : CastInst(CI.getType(), FPToUI, CI.getOperand(0)) {
1920 /// @brief Constructor with insert-before-instruction semantics
1922 Value *S, ///< The value to be converted
1923 const Type *Ty, ///< The type to convert to
1924 const std::string &Name = "", ///< A name for the new instruction
1925 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
1928 /// @brief Constructor with insert-at-end-of-block semantics
1930 Value *S, ///< The value to be converted
1931 const Type *Ty, ///< The type to convert to
1932 const std::string &Name, ///< A name for the new instruction
1933 BasicBlock *InsertAtEnd ///< Where to insert the new instruction
1936 /// @brief Clone an identical FPToUIInst
1937 virtual CastInst *clone() const;
1939 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
1940 static inline bool classof(const FPToUIInst *) { return true; }
1941 static inline bool classof(const Instruction *I) {
1942 return I->getOpcode() == FPToUI;
1944 static inline bool classof(const Value *V) {
1945 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1949 //===----------------------------------------------------------------------===//
1951 //===----------------------------------------------------------------------===//
1953 /// @brief This class represents a cast from floating point to signed integer.
1954 class FPToSIInst : public CastInst {
1955 FPToSIInst(const FPToSIInst &CI)
1956 : CastInst(CI.getType(), FPToSI, CI.getOperand(0)) {
1959 /// @brief Constructor with insert-before-instruction semantics
1961 Value *S, ///< The value to be converted
1962 const Type *Ty, ///< The type to convert to
1963 const std::string &Name = "", ///< A name for the new instruction
1964 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
1967 /// @brief Constructor with insert-at-end-of-block semantics
1969 Value *S, ///< The value to be converted
1970 const Type *Ty, ///< The type to convert to
1971 const std::string &Name, ///< A name for the new instruction
1972 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
1975 /// @brief Clone an identical FPToSIInst
1976 virtual CastInst *clone() const;
1978 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
1979 static inline bool classof(const FPToSIInst *) { return true; }
1980 static inline bool classof(const Instruction *I) {
1981 return I->getOpcode() == FPToSI;
1983 static inline bool classof(const Value *V) {
1984 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1988 //===----------------------------------------------------------------------===//
1989 // IntToPtrInst Class
1990 //===----------------------------------------------------------------------===//
1992 /// @brief This class represents a cast from an integer to a pointer.
1993 class IntToPtrInst : public CastInst {
1994 IntToPtrInst(const IntToPtrInst &CI)
1995 : CastInst(CI.getType(), IntToPtr, CI.getOperand(0)) {
1998 /// @brief Constructor with insert-before-instruction semantics
2000 Value *S, ///< The value to be converted
2001 const Type *Ty, ///< The type to convert to
2002 const std::string &Name = "", ///< A name for the new instruction
2003 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
2006 /// @brief Constructor with insert-at-end-of-block semantics
2008 Value *S, ///< The value to be converted
2009 const Type *Ty, ///< The type to convert to
2010 const std::string &Name, ///< A name for the new instruction
2011 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
2014 /// @brief Clone an identical IntToPtrInst
2015 virtual CastInst *clone() const;
2017 // Methods for support type inquiry through isa, cast, and dyn_cast:
2018 static inline bool classof(const IntToPtrInst *) { return true; }
2019 static inline bool classof(const Instruction *I) {
2020 return I->getOpcode() == IntToPtr;
2022 static inline bool classof(const Value *V) {
2023 return isa<Instruction>(V) && classof(cast<Instruction>(V));
2027 //===----------------------------------------------------------------------===//
2028 // PtrToIntInst Class
2029 //===----------------------------------------------------------------------===//
2031 /// @brief This class represents a cast from a pointer to an integer
2032 class PtrToIntInst : public CastInst {
2033 PtrToIntInst(const PtrToIntInst &CI)
2034 : CastInst(CI.getType(), PtrToInt, CI.getOperand(0)) {
2037 /// @brief Constructor with insert-before-instruction semantics
2039 Value *S, ///< The value to be converted
2040 const Type *Ty, ///< The type to convert to
2041 const std::string &Name = "", ///< A name for the new instruction
2042 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
2045 /// @brief Constructor with insert-at-end-of-block semantics
2047 Value *S, ///< The value to be converted
2048 const Type *Ty, ///< The type to convert to
2049 const std::string &Name, ///< A name for the new instruction
2050 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
2053 /// @brief Clone an identical PtrToIntInst
2054 virtual CastInst *clone() const;
2056 // Methods for support type inquiry through isa, cast, and dyn_cast:
2057 static inline bool classof(const PtrToIntInst *) { return true; }
2058 static inline bool classof(const Instruction *I) {
2059 return I->getOpcode() == PtrToInt;
2061 static inline bool classof(const Value *V) {
2062 return isa<Instruction>(V) && classof(cast<Instruction>(V));
2066 //===----------------------------------------------------------------------===//
2067 // BitCastInst Class
2068 //===----------------------------------------------------------------------===//
2070 /// @brief This class represents a no-op cast from one type to another.
2071 class BitCastInst : public CastInst {
2072 BitCastInst(const BitCastInst &CI)
2073 : CastInst(CI.getType(), BitCast, CI.getOperand(0)) {
2076 /// @brief Constructor with insert-before-instruction semantics
2078 Value *S, ///< The value to be casted
2079 const Type *Ty, ///< The type to casted to
2080 const std::string &Name = "", ///< A name for the new instruction
2081 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
2084 /// @brief Constructor with insert-at-end-of-block semantics
2086 Value *S, ///< The value to be casted
2087 const Type *Ty, ///< The type to casted to
2088 const std::string &Name, ///< A name for the new instruction
2089 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
2092 /// @brief Clone an identical BitCastInst
2093 virtual CastInst *clone() const;
2095 // Methods for support type inquiry through isa, cast, and dyn_cast:
2096 static inline bool classof(const BitCastInst *) { return true; }
2097 static inline bool classof(const Instruction *I) {
2098 return I->getOpcode() == BitCast;
2100 static inline bool classof(const Value *V) {
2101 return isa<Instruction>(V) && classof(cast<Instruction>(V));
2105 } // End llvm namespace