1 //===-- llvm/Instructions.h - Instruction subclass definitions --*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // 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"
20 #include "llvm/DerivedTypes.h"
21 #include "llvm/Attributes.h"
22 #include "llvm/BasicBlock.h"
23 #include "llvm/ADT/SmallVector.h"
32 //===----------------------------------------------------------------------===//
33 // AllocationInst Class
34 //===----------------------------------------------------------------------===//
36 /// AllocationInst - This class is the common base class of MallocInst and
39 class AllocationInst : public UnaryInstruction {
41 AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy, unsigned Align,
42 const std::string &Name = "", Instruction *InsertBefore = 0);
43 AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy, unsigned Align,
44 const std::string &Name, BasicBlock *InsertAtEnd);
46 // Out of line virtual method, so the vtable, etc. has a home.
47 virtual ~AllocationInst();
49 /// isArrayAllocation - Return true if there is an allocation size parameter
50 /// to the allocation instruction that is not 1.
52 bool isArrayAllocation() const;
54 /// getArraySize - Get the number of element allocated, for a simple
55 /// allocation of a single element, this will return a constant 1 value.
57 const Value *getArraySize() const { return getOperand(0); }
58 Value *getArraySize() { return getOperand(0); }
60 /// getType - Overload to return most specific pointer type
62 const PointerType *getType() const {
63 return reinterpret_cast<const PointerType*>(Instruction::getType());
66 /// getAllocatedType - Return the type that is being allocated by the
69 const Type *getAllocatedType() const;
71 /// getAlignment - Return the alignment of the memory that is being allocated
72 /// by the instruction.
74 unsigned getAlignment() const { return (1u << SubclassData) >> 1; }
75 void setAlignment(unsigned Align);
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 &NameStr = "",
102 Instruction *InsertBefore = 0)
103 : AllocationInst(Ty, ArraySize, Malloc, 0, NameStr, InsertBefore) {}
104 MallocInst(const Type *Ty, Value *ArraySize, const std::string &NameStr,
105 BasicBlock *InsertAtEnd)
106 : AllocationInst(Ty, ArraySize, Malloc, 0, NameStr, InsertAtEnd) {}
108 MallocInst(const Type *Ty, const std::string &NameStr,
109 Instruction *InsertBefore = 0)
110 : AllocationInst(Ty, 0, Malloc, 0, NameStr, InsertBefore) {}
111 MallocInst(const Type *Ty, const std::string &NameStr,
112 BasicBlock *InsertAtEnd)
113 : AllocationInst(Ty, 0, Malloc, 0, NameStr, InsertAtEnd) {}
115 MallocInst(const Type *Ty, Value *ArraySize, unsigned Align,
116 const std::string &NameStr, BasicBlock *InsertAtEnd)
117 : AllocationInst(Ty, ArraySize, Malloc, Align, NameStr, InsertAtEnd) {}
118 MallocInst(const Type *Ty, Value *ArraySize, unsigned Align,
119 const std::string &NameStr = "",
120 Instruction *InsertBefore = 0)
121 : AllocationInst(Ty, ArraySize, Malloc, Align, NameStr, InsertBefore) {}
123 virtual MallocInst *clone() const;
125 // Methods for support type inquiry through isa, cast, and dyn_cast:
126 static inline bool classof(const MallocInst *) { return true; }
127 static inline bool classof(const Instruction *I) {
128 return (I->getOpcode() == Instruction::Malloc);
130 static inline bool classof(const Value *V) {
131 return isa<Instruction>(V) && classof(cast<Instruction>(V));
136 //===----------------------------------------------------------------------===//
138 //===----------------------------------------------------------------------===//
140 /// AllocaInst - an instruction to allocate memory on the stack
142 class AllocaInst : public AllocationInst {
143 AllocaInst(const AllocaInst &);
145 explicit AllocaInst(const Type *Ty, Value *ArraySize = 0,
146 const std::string &NameStr = "",
147 Instruction *InsertBefore = 0)
148 : AllocationInst(Ty, ArraySize, Alloca, 0, NameStr, InsertBefore) {}
149 AllocaInst(const Type *Ty, Value *ArraySize, const std::string &NameStr,
150 BasicBlock *InsertAtEnd)
151 : AllocationInst(Ty, ArraySize, Alloca, 0, NameStr, InsertAtEnd) {}
153 AllocaInst(const Type *Ty, const std::string &NameStr,
154 Instruction *InsertBefore = 0)
155 : AllocationInst(Ty, 0, Alloca, 0, NameStr, InsertBefore) {}
156 AllocaInst(const Type *Ty, const std::string &NameStr,
157 BasicBlock *InsertAtEnd)
158 : AllocationInst(Ty, 0, Alloca, 0, NameStr, InsertAtEnd) {}
160 AllocaInst(const Type *Ty, Value *ArraySize, unsigned Align,
161 const std::string &NameStr = "", Instruction *InsertBefore = 0)
162 : AllocationInst(Ty, ArraySize, Alloca, Align, NameStr, InsertBefore) {}
163 AllocaInst(const Type *Ty, Value *ArraySize, unsigned Align,
164 const std::string &NameStr, BasicBlock *InsertAtEnd)
165 : AllocationInst(Ty, ArraySize, Alloca, Align, NameStr, InsertAtEnd) {}
167 virtual AllocaInst *clone() const;
169 /// isStaticAlloca - Return true if this alloca is in the entry block of the
170 /// function and is a constant size. If so, the code generator will fold it
171 /// into the prolog/epilog code, so it is basically free.
172 bool isStaticAlloca() const;
174 // Methods for support type inquiry through isa, cast, and dyn_cast:
175 static inline bool classof(const AllocaInst *) { return true; }
176 static inline bool classof(const Instruction *I) {
177 return (I->getOpcode() == Instruction::Alloca);
179 static inline bool classof(const Value *V) {
180 return isa<Instruction>(V) && classof(cast<Instruction>(V));
185 //===----------------------------------------------------------------------===//
187 //===----------------------------------------------------------------------===//
189 /// FreeInst - an instruction to deallocate memory
191 class FreeInst : public UnaryInstruction {
194 explicit FreeInst(Value *Ptr, Instruction *InsertBefore = 0);
195 FreeInst(Value *Ptr, BasicBlock *InsertAfter);
197 virtual FreeInst *clone() const;
199 // Accessor methods for consistency with other memory operations
200 Value *getPointerOperand() { return getOperand(0); }
201 const Value *getPointerOperand() const { return getOperand(0); }
203 // Methods for support type inquiry through isa, cast, and dyn_cast:
204 static inline bool classof(const FreeInst *) { return true; }
205 static inline bool classof(const Instruction *I) {
206 return (I->getOpcode() == Instruction::Free);
208 static inline bool classof(const Value *V) {
209 return isa<Instruction>(V) && classof(cast<Instruction>(V));
214 //===----------------------------------------------------------------------===//
216 //===----------------------------------------------------------------------===//
218 /// LoadInst - an instruction for reading from memory. This uses the
219 /// SubclassData field in Value to store whether or not the load is volatile.
221 class LoadInst : public UnaryInstruction {
223 LoadInst(const LoadInst &LI)
224 : UnaryInstruction(LI.getType(), Load, LI.getOperand(0)) {
225 setVolatile(LI.isVolatile());
226 setAlignment(LI.getAlignment());
234 LoadInst(Value *Ptr, const std::string &NameStr, Instruction *InsertBefore);
235 LoadInst(Value *Ptr, const std::string &NameStr, BasicBlock *InsertAtEnd);
236 LoadInst(Value *Ptr, const std::string &NameStr, bool isVolatile = false,
237 Instruction *InsertBefore = 0);
238 LoadInst(Value *Ptr, const std::string &NameStr, bool isVolatile,
239 unsigned Align, Instruction *InsertBefore = 0);
240 LoadInst(Value *Ptr, const std::string &NameStr, bool isVolatile,
241 BasicBlock *InsertAtEnd);
242 LoadInst(Value *Ptr, const std::string &NameStr, bool isVolatile,
243 unsigned Align, BasicBlock *InsertAtEnd);
245 LoadInst(Value *Ptr, const char *NameStr, Instruction *InsertBefore);
246 LoadInst(Value *Ptr, const char *NameStr, BasicBlock *InsertAtEnd);
247 explicit LoadInst(Value *Ptr, const char *NameStr = 0,
248 bool isVolatile = false, Instruction *InsertBefore = 0);
249 LoadInst(Value *Ptr, const char *NameStr, bool isVolatile,
250 BasicBlock *InsertAtEnd);
252 /// isVolatile - Return true if this is a load from a volatile memory
255 bool isVolatile() const { return SubclassData & 1; }
257 /// setVolatile - Specify whether this is a volatile load or not.
259 void setVolatile(bool V) {
260 SubclassData = (SubclassData & ~1) | (V ? 1 : 0);
263 virtual LoadInst *clone() const;
265 /// getAlignment - Return the alignment of the access that is being performed
267 unsigned getAlignment() const {
268 return (1 << (SubclassData>>1)) >> 1;
271 void setAlignment(unsigned Align);
273 Value *getPointerOperand() { return getOperand(0); }
274 const Value *getPointerOperand() const { return getOperand(0); }
275 static unsigned getPointerOperandIndex() { return 0U; }
277 // Methods for support type inquiry through isa, cast, and dyn_cast:
278 static inline bool classof(const LoadInst *) { return true; }
279 static inline bool classof(const Instruction *I) {
280 return I->getOpcode() == Instruction::Load;
282 static inline bool classof(const Value *V) {
283 return isa<Instruction>(V) && classof(cast<Instruction>(V));
288 //===----------------------------------------------------------------------===//
290 //===----------------------------------------------------------------------===//
292 /// StoreInst - an instruction for storing to memory
294 class StoreInst : public Instruction {
295 void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
297 StoreInst(const StoreInst &SI) : Instruction(SI.getType(), Store,
299 Op<0>() = SI.Op<0>();
300 Op<1>() = SI.Op<1>();
301 setVolatile(SI.isVolatile());
302 setAlignment(SI.getAlignment());
310 // allocate space for exactly two operands
311 void *operator new(size_t s) {
312 return User::operator new(s, 2);
314 StoreInst(Value *Val, Value *Ptr, Instruction *InsertBefore);
315 StoreInst(Value *Val, Value *Ptr, BasicBlock *InsertAtEnd);
316 StoreInst(Value *Val, Value *Ptr, bool isVolatile = false,
317 Instruction *InsertBefore = 0);
318 StoreInst(Value *Val, Value *Ptr, bool isVolatile,
319 unsigned Align, Instruction *InsertBefore = 0);
320 StoreInst(Value *Val, Value *Ptr, bool isVolatile, BasicBlock *InsertAtEnd);
321 StoreInst(Value *Val, Value *Ptr, bool isVolatile,
322 unsigned Align, BasicBlock *InsertAtEnd);
325 /// isVolatile - Return true if this is a load from a volatile memory
328 bool isVolatile() const { return SubclassData & 1; }
330 /// setVolatile - Specify whether this is a volatile load or not.
332 void setVolatile(bool V) {
333 SubclassData = (SubclassData & ~1) | (V ? 1 : 0);
336 /// Transparently provide more efficient getOperand methods.
337 DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
339 /// getAlignment - Return the alignment of the access that is being performed
341 unsigned getAlignment() const {
342 return (1 << (SubclassData>>1)) >> 1;
345 void setAlignment(unsigned Align);
347 virtual StoreInst *clone() const;
349 Value *getPointerOperand() { return getOperand(1); }
350 const Value *getPointerOperand() const { return getOperand(1); }
351 static unsigned getPointerOperandIndex() { return 1U; }
353 // Methods for support type inquiry through isa, cast, and dyn_cast:
354 static inline bool classof(const StoreInst *) { return true; }
355 static inline bool classof(const Instruction *I) {
356 return I->getOpcode() == Instruction::Store;
358 static inline bool classof(const Value *V) {
359 return isa<Instruction>(V) && classof(cast<Instruction>(V));
364 struct OperandTraits<StoreInst> : FixedNumOperandTraits<2> {
367 DEFINE_TRANSPARENT_OPERAND_ACCESSORS(StoreInst, Value)
369 //===----------------------------------------------------------------------===//
370 // GetElementPtrInst Class
371 //===----------------------------------------------------------------------===//
373 // checkType - Simple wrapper function to give a better assertion failure
374 // message on bad indexes for a gep instruction.
376 static inline const Type *checkType(const Type *Ty) {
377 assert(Ty && "Invalid GetElementPtrInst indices for type!");
381 /// GetElementPtrInst - an instruction for type-safe pointer arithmetic to
382 /// access elements of arrays and structs
384 class GetElementPtrInst : public Instruction {
385 GetElementPtrInst(const GetElementPtrInst &GEPI);
386 void init(Value *Ptr, Value* const *Idx, unsigned NumIdx,
387 const std::string &NameStr);
388 void init(Value *Ptr, Value *Idx, const std::string &NameStr);
390 template<typename InputIterator>
391 void init(Value *Ptr, InputIterator IdxBegin, InputIterator IdxEnd,
392 const std::string &NameStr,
393 // This argument ensures that we have an iterator we can
394 // do arithmetic on in constant time
395 std::random_access_iterator_tag) {
396 unsigned NumIdx = static_cast<unsigned>(std::distance(IdxBegin, IdxEnd));
399 // This requires that the iterator points to contiguous memory.
400 init(Ptr, &*IdxBegin, NumIdx, NameStr); // FIXME: for the general case
401 // we have to build an array here
404 init(Ptr, 0, NumIdx, NameStr);
408 /// getIndexedType - Returns the type of the element that would be loaded with
409 /// a load instruction with the specified parameters.
411 /// Null is returned if the indices are invalid for the specified
414 template<typename InputIterator>
415 static const Type *getIndexedType(const Type *Ptr,
416 InputIterator IdxBegin,
417 InputIterator IdxEnd,
418 // This argument ensures that we
419 // have an iterator we can do
420 // arithmetic on in constant time
421 std::random_access_iterator_tag) {
422 unsigned NumIdx = static_cast<unsigned>(std::distance(IdxBegin, IdxEnd));
425 // This requires that the iterator points to contiguous memory.
426 return getIndexedType(Ptr, &*IdxBegin, NumIdx);
428 return getIndexedType(Ptr, (Value *const*)0, NumIdx);
431 /// Constructors - Create a getelementptr instruction with a base pointer an
432 /// list of indices. The first ctor can optionally insert before an existing
433 /// instruction, the second appends the new instruction to the specified
435 template<typename InputIterator>
436 inline GetElementPtrInst(Value *Ptr, InputIterator IdxBegin,
437 InputIterator IdxEnd,
439 const std::string &NameStr,
440 Instruction *InsertBefore);
441 template<typename InputIterator>
442 inline GetElementPtrInst(Value *Ptr,
443 InputIterator IdxBegin, InputIterator IdxEnd,
445 const std::string &NameStr, BasicBlock *InsertAtEnd);
447 /// Constructors - These two constructors are convenience methods because one
448 /// and two index getelementptr instructions are so common.
449 GetElementPtrInst(Value *Ptr, Value *Idx, const std::string &NameStr = "",
450 Instruction *InsertBefore = 0);
451 GetElementPtrInst(Value *Ptr, Value *Idx,
452 const std::string &NameStr, BasicBlock *InsertAtEnd);
454 template<typename InputIterator>
455 static GetElementPtrInst *Create(Value *Ptr, InputIterator IdxBegin,
456 InputIterator IdxEnd,
457 const std::string &NameStr = "",
458 Instruction *InsertBefore = 0) {
459 typename std::iterator_traits<InputIterator>::difference_type Values =
460 1 + std::distance(IdxBegin, IdxEnd);
462 GetElementPtrInst(Ptr, IdxBegin, IdxEnd, Values, NameStr, InsertBefore);
464 template<typename InputIterator>
465 static GetElementPtrInst *Create(Value *Ptr,
466 InputIterator IdxBegin, InputIterator IdxEnd,
467 const std::string &NameStr,
468 BasicBlock *InsertAtEnd) {
469 typename std::iterator_traits<InputIterator>::difference_type Values =
470 1 + std::distance(IdxBegin, IdxEnd);
472 GetElementPtrInst(Ptr, IdxBegin, IdxEnd, Values, NameStr, InsertAtEnd);
475 /// Constructors - These two creators are convenience methods because one
476 /// index getelementptr instructions are so common.
477 static GetElementPtrInst *Create(Value *Ptr, Value *Idx,
478 const std::string &NameStr = "",
479 Instruction *InsertBefore = 0) {
480 return new(2) GetElementPtrInst(Ptr, Idx, NameStr, InsertBefore);
482 static GetElementPtrInst *Create(Value *Ptr, Value *Idx,
483 const std::string &NameStr,
484 BasicBlock *InsertAtEnd) {
485 return new(2) GetElementPtrInst(Ptr, Idx, NameStr, InsertAtEnd);
488 virtual GetElementPtrInst *clone() const;
490 /// Transparently provide more efficient getOperand methods.
491 DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
493 // getType - Overload to return most specific pointer type...
494 const PointerType *getType() const {
495 return reinterpret_cast<const PointerType*>(Instruction::getType());
498 /// getIndexedType - Returns the type of the element that would be loaded with
499 /// a load instruction with the specified parameters.
501 /// Null is returned if the indices are invalid for the specified
504 template<typename InputIterator>
505 static const Type *getIndexedType(const Type *Ptr,
506 InputIterator IdxBegin,
507 InputIterator IdxEnd) {
508 return getIndexedType(Ptr, IdxBegin, IdxEnd,
509 typename std::iterator_traits<InputIterator>::
510 iterator_category());
513 static const Type *getIndexedType(const Type *Ptr,
514 Value* const *Idx, unsigned NumIdx);
516 static const Type *getIndexedType(const Type *Ptr,
517 uint64_t const *Idx, unsigned NumIdx);
519 static const Type *getIndexedType(const Type *Ptr, Value *Idx);
521 inline op_iterator idx_begin() { return op_begin()+1; }
522 inline const_op_iterator idx_begin() const { return op_begin()+1; }
523 inline op_iterator idx_end() { return op_end(); }
524 inline const_op_iterator idx_end() const { return op_end(); }
526 Value *getPointerOperand() {
527 return getOperand(0);
529 const Value *getPointerOperand() const {
530 return getOperand(0);
532 static unsigned getPointerOperandIndex() {
533 return 0U; // get index for modifying correct operand
536 /// getPointerOperandType - Method to return the pointer operand as a
538 const PointerType *getPointerOperandType() const {
539 return reinterpret_cast<const PointerType*>(getPointerOperand()->getType());
543 unsigned getNumIndices() const { // Note: always non-negative
544 return getNumOperands() - 1;
547 bool hasIndices() const {
548 return getNumOperands() > 1;
551 /// hasAllZeroIndices - Return true if all of the indices of this GEP are
552 /// zeros. If so, the result pointer and the first operand have the same
553 /// value, just potentially different types.
554 bool hasAllZeroIndices() const;
556 /// hasAllConstantIndices - Return true if all of the indices of this GEP are
557 /// constant integers. If so, the result pointer and the first operand have
558 /// a constant offset between them.
559 bool hasAllConstantIndices() const;
562 // Methods for support type inquiry through isa, cast, and dyn_cast:
563 static inline bool classof(const GetElementPtrInst *) { return true; }
564 static inline bool classof(const Instruction *I) {
565 return (I->getOpcode() == Instruction::GetElementPtr);
567 static inline bool classof(const Value *V) {
568 return isa<Instruction>(V) && classof(cast<Instruction>(V));
573 struct OperandTraits<GetElementPtrInst> : VariadicOperandTraits<1> {
576 template<typename InputIterator>
577 GetElementPtrInst::GetElementPtrInst(Value *Ptr,
578 InputIterator IdxBegin,
579 InputIterator IdxEnd,
581 const std::string &NameStr,
582 Instruction *InsertBefore)
583 : Instruction(PointerType::get(checkType(
584 getIndexedType(Ptr->getType(),
586 cast<PointerType>(Ptr->getType())
587 ->getAddressSpace()),
589 OperandTraits<GetElementPtrInst>::op_end(this) - Values,
590 Values, InsertBefore) {
591 init(Ptr, IdxBegin, IdxEnd, NameStr,
592 typename std::iterator_traits<InputIterator>::iterator_category());
594 template<typename InputIterator>
595 GetElementPtrInst::GetElementPtrInst(Value *Ptr,
596 InputIterator IdxBegin,
597 InputIterator IdxEnd,
599 const std::string &NameStr,
600 BasicBlock *InsertAtEnd)
601 : Instruction(PointerType::get(checkType(
602 getIndexedType(Ptr->getType(),
604 cast<PointerType>(Ptr->getType())
605 ->getAddressSpace()),
607 OperandTraits<GetElementPtrInst>::op_end(this) - Values,
608 Values, InsertAtEnd) {
609 init(Ptr, IdxBegin, IdxEnd, NameStr,
610 typename std::iterator_traits<InputIterator>::iterator_category());
614 DEFINE_TRANSPARENT_OPERAND_ACCESSORS(GetElementPtrInst, Value)
617 //===----------------------------------------------------------------------===//
619 //===----------------------------------------------------------------------===//
621 /// This instruction compares its operands according to the predicate given
622 /// to the constructor. It only operates on integers or pointers. The operands
623 /// must be identical types.
624 /// @brief Represent an integer comparison operator.
625 class ICmpInst: public CmpInst {
627 /// @brief Constructor with insert-before-instruction semantics.
629 Predicate pred, ///< The predicate to use for the comparison
630 Value *LHS, ///< The left-hand-side of the expression
631 Value *RHS, ///< The right-hand-side of the expression
632 const std::string &NameStr = "", ///< Name of the instruction
633 Instruction *InsertBefore = 0 ///< Where to insert
634 ) : CmpInst(makeCmpResultType(LHS->getType()),
635 Instruction::ICmp, pred, LHS, RHS, NameStr,
637 assert(pred >= CmpInst::FIRST_ICMP_PREDICATE &&
638 pred <= CmpInst::LAST_ICMP_PREDICATE &&
639 "Invalid ICmp predicate value");
640 assert(getOperand(0)->getType() == getOperand(1)->getType() &&
641 "Both operands to ICmp instruction are not of the same type!");
642 // Check that the operands are the right type
643 assert((getOperand(0)->getType()->isIntOrIntVector() ||
644 isa<PointerType>(getOperand(0)->getType())) &&
645 "Invalid operand types for ICmp instruction");
648 /// @brief Constructor with insert-at-block-end semantics.
650 Predicate pred, ///< The predicate to use for the comparison
651 Value *LHS, ///< The left-hand-side of the expression
652 Value *RHS, ///< The right-hand-side of the expression
653 const std::string &NameStr, ///< Name of the instruction
654 BasicBlock *InsertAtEnd ///< Block to insert into.
655 ) : CmpInst(makeCmpResultType(LHS->getType()),
656 Instruction::ICmp, pred, LHS, RHS, NameStr,
658 assert(pred >= CmpInst::FIRST_ICMP_PREDICATE &&
659 pred <= CmpInst::LAST_ICMP_PREDICATE &&
660 "Invalid ICmp predicate value");
661 assert(getOperand(0)->getType() == getOperand(1)->getType() &&
662 "Both operands to ICmp instruction are not of the same type!");
663 // Check that the operands are the right type
664 assert((getOperand(0)->getType()->isIntOrIntVector() ||
665 isa<PointerType>(getOperand(0)->getType())) &&
666 "Invalid operand types for ICmp instruction");
669 /// For example, EQ->EQ, SLE->SLE, UGT->SGT, etc.
670 /// @returns the predicate that would be the result if the operand were
671 /// regarded as signed.
672 /// @brief Return the signed version of the predicate
673 Predicate getSignedPredicate() const {
674 return getSignedPredicate(getPredicate());
677 /// This is a static version that you can use without an instruction.
678 /// @brief Return the signed version of the predicate.
679 static Predicate getSignedPredicate(Predicate pred);
681 /// For example, EQ->EQ, SLE->ULE, UGT->UGT, etc.
682 /// @returns the predicate that would be the result if the operand were
683 /// regarded as unsigned.
684 /// @brief Return the unsigned version of the predicate
685 Predicate getUnsignedPredicate() const {
686 return getUnsignedPredicate(getPredicate());
689 /// This is a static version that you can use without an instruction.
690 /// @brief Return the unsigned version of the predicate.
691 static Predicate getUnsignedPredicate(Predicate pred);
693 /// isEquality - Return true if this predicate is either EQ or NE. This also
694 /// tests for commutativity.
695 static bool isEquality(Predicate P) {
696 return P == ICMP_EQ || P == ICMP_NE;
699 /// isEquality - Return true if this predicate is either EQ or NE. This also
700 /// tests for commutativity.
701 bool isEquality() const {
702 return isEquality(getPredicate());
705 /// @returns true if the predicate of this ICmpInst is commutative
706 /// @brief Determine if this relation is commutative.
707 bool isCommutative() const { return isEquality(); }
709 /// isRelational - Return true if the predicate is relational (not EQ or NE).
711 bool isRelational() const {
712 return !isEquality();
715 /// isRelational - Return true if the predicate is relational (not EQ or NE).
717 static bool isRelational(Predicate P) {
718 return !isEquality(P);
721 /// @returns true if the predicate of this ICmpInst is signed, false otherwise
722 /// @brief Determine if this instruction's predicate is signed.
723 bool isSignedPredicate() const { return isSignedPredicate(getPredicate()); }
725 /// @returns true if the predicate provided is signed, false otherwise
726 /// @brief Determine if the predicate is signed.
727 static bool isSignedPredicate(Predicate pred);
729 /// @returns true if the specified compare predicate is
730 /// true when both operands are equal...
731 /// @brief Determine if the icmp is true when both operands are equal
732 static bool isTrueWhenEqual(ICmpInst::Predicate pred) {
733 return pred == ICmpInst::ICMP_EQ || pred == ICmpInst::ICMP_UGE ||
734 pred == ICmpInst::ICMP_SGE || pred == ICmpInst::ICMP_ULE ||
735 pred == ICmpInst::ICMP_SLE;
738 /// @returns true if the specified compare instruction is
739 /// true when both operands are equal...
740 /// @brief Determine if the ICmpInst returns true when both operands are equal
741 bool isTrueWhenEqual() {
742 return isTrueWhenEqual(getPredicate());
745 /// Initialize a set of values that all satisfy the predicate with C.
746 /// @brief Make a ConstantRange for a relation with a constant value.
747 static ConstantRange makeConstantRange(Predicate pred, const APInt &C);
749 /// Exchange the two operands to this instruction in such a way that it does
750 /// not modify the semantics of the instruction. The predicate value may be
751 /// changed to retain the same result if the predicate is order dependent
753 /// @brief Swap operands and adjust predicate.
754 void swapOperands() {
755 SubclassData = getSwappedPredicate();
756 Op<0>().swap(Op<1>());
759 virtual ICmpInst *clone() const;
761 // Methods for support type inquiry through isa, cast, and dyn_cast:
762 static inline bool classof(const ICmpInst *) { return true; }
763 static inline bool classof(const Instruction *I) {
764 return I->getOpcode() == Instruction::ICmp;
766 static inline bool classof(const Value *V) {
767 return isa<Instruction>(V) && classof(cast<Instruction>(V));
772 //===----------------------------------------------------------------------===//
774 //===----------------------------------------------------------------------===//
776 /// This instruction compares its operands according to the predicate given
777 /// to the constructor. It only operates on floating point values or packed
778 /// vectors of floating point values. The operands must be identical types.
779 /// @brief Represents a floating point comparison operator.
780 class FCmpInst: public CmpInst {
782 /// @brief Constructor with insert-before-instruction semantics.
784 Predicate pred, ///< The predicate to use for the comparison
785 Value *LHS, ///< The left-hand-side of the expression
786 Value *RHS, ///< The right-hand-side of the expression
787 const std::string &NameStr = "", ///< Name of the instruction
788 Instruction *InsertBefore = 0 ///< Where to insert
789 ) : CmpInst(makeCmpResultType(LHS->getType()),
790 Instruction::FCmp, pred, LHS, RHS, NameStr,
792 assert(pred <= FCmpInst::LAST_FCMP_PREDICATE &&
793 "Invalid FCmp predicate value");
794 assert(getOperand(0)->getType() == getOperand(1)->getType() &&
795 "Both operands to FCmp instruction are not of the same type!");
796 // Check that the operands are the right type
797 assert(getOperand(0)->getType()->isFPOrFPVector() &&
798 "Invalid operand types for FCmp instruction");
801 /// @brief Constructor with insert-at-block-end semantics.
803 Predicate pred, ///< The predicate to use for the comparison
804 Value *LHS, ///< The left-hand-side of the expression
805 Value *RHS, ///< The right-hand-side of the expression
806 const std::string &NameStr, ///< Name of the instruction
807 BasicBlock *InsertAtEnd ///< Block to insert into.
808 ) : CmpInst(makeCmpResultType(LHS->getType()),
809 Instruction::FCmp, pred, LHS, RHS, NameStr,
811 assert(pred <= FCmpInst::LAST_FCMP_PREDICATE &&
812 "Invalid FCmp predicate value");
813 assert(getOperand(0)->getType() == getOperand(1)->getType() &&
814 "Both operands to FCmp instruction are not of the same type!");
815 // Check that the operands are the right type
816 assert(getOperand(0)->getType()->isFPOrFPVector() &&
817 "Invalid operand types for FCmp instruction");
820 /// @returns true if the predicate of this instruction is EQ or NE.
821 /// @brief Determine if this is an equality predicate.
822 bool isEquality() const {
823 return SubclassData == FCMP_OEQ || SubclassData == FCMP_ONE ||
824 SubclassData == FCMP_UEQ || SubclassData == FCMP_UNE;
827 /// @returns true if the predicate of this instruction is commutative.
828 /// @brief Determine if this is a commutative predicate.
829 bool isCommutative() const {
830 return isEquality() ||
831 SubclassData == FCMP_FALSE ||
832 SubclassData == FCMP_TRUE ||
833 SubclassData == FCMP_ORD ||
834 SubclassData == FCMP_UNO;
837 /// @returns true if the predicate is relational (not EQ or NE).
838 /// @brief Determine if this a relational predicate.
839 bool isRelational() const { return !isEquality(); }
841 /// Exchange the two operands to this instruction in such a way that it does
842 /// not modify the semantics of the instruction. The predicate value may be
843 /// changed to retain the same result if the predicate is order dependent
845 /// @brief Swap operands and adjust predicate.
846 void swapOperands() {
847 SubclassData = getSwappedPredicate();
848 Op<0>().swap(Op<1>());
851 virtual FCmpInst *clone() const;
853 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
854 static inline bool classof(const FCmpInst *) { return true; }
855 static inline bool classof(const Instruction *I) {
856 return I->getOpcode() == Instruction::FCmp;
858 static inline bool classof(const Value *V) {
859 return isa<Instruction>(V) && classof(cast<Instruction>(V));
864 //===----------------------------------------------------------------------===//
866 //===----------------------------------------------------------------------===//
868 /// This instruction compares its operands according to the predicate given
869 /// to the constructor. It only operates on vectors of integers.
870 /// The operands must be identical types.
871 /// @brief Represents a vector integer comparison operator.
872 class VICmpInst: public CmpInst {
874 /// @brief Constructor with insert-before-instruction semantics.
876 Predicate pred, ///< The predicate to use for the comparison
877 Value *LHS, ///< The left-hand-side of the expression
878 Value *RHS, ///< The right-hand-side of the expression
879 const std::string &NameStr = "", ///< Name of the instruction
880 Instruction *InsertBefore = 0 ///< Where to insert
881 ) : CmpInst(LHS->getType(), Instruction::VICmp, pred, LHS, RHS, NameStr,
883 assert(pred >= CmpInst::FIRST_ICMP_PREDICATE &&
884 pred <= CmpInst::LAST_ICMP_PREDICATE &&
885 "Invalid VICmp predicate value");
886 assert(getOperand(0)->getType() == getOperand(1)->getType() &&
887 "Both operands to VICmp instruction are not of the same type!");
890 /// @brief Constructor with insert-at-block-end semantics.
892 Predicate pred, ///< The predicate to use for the comparison
893 Value *LHS, ///< The left-hand-side of the expression
894 Value *RHS, ///< The right-hand-side of the expression
895 const std::string &NameStr, ///< Name of the instruction
896 BasicBlock *InsertAtEnd ///< Block to insert into.
897 ) : CmpInst(LHS->getType(), Instruction::VICmp, pred, LHS, RHS, NameStr,
899 assert(pred >= CmpInst::FIRST_ICMP_PREDICATE &&
900 pred <= CmpInst::LAST_ICMP_PREDICATE &&
901 "Invalid VICmp predicate value");
902 assert(getOperand(0)->getType() == getOperand(1)->getType() &&
903 "Both operands to VICmp instruction are not of the same type!");
906 /// @brief Return the predicate for this instruction.
907 Predicate getPredicate() const { return Predicate(SubclassData); }
909 virtual VICmpInst *clone() const;
911 // Methods for support type inquiry through isa, cast, and dyn_cast:
912 static inline bool classof(const VICmpInst *) { return true; }
913 static inline bool classof(const Instruction *I) {
914 return I->getOpcode() == Instruction::VICmp;
916 static inline bool classof(const Value *V) {
917 return isa<Instruction>(V) && classof(cast<Instruction>(V));
921 //===----------------------------------------------------------------------===//
923 //===----------------------------------------------------------------------===//
925 /// This instruction compares its operands according to the predicate given
926 /// to the constructor. It only operates on vectors of floating point values.
927 /// The operands must be identical types.
928 /// @brief Represents a vector floating point comparison operator.
929 class VFCmpInst: public CmpInst {
931 /// @brief Constructor with insert-before-instruction semantics.
933 Predicate pred, ///< The predicate to use for the comparison
934 Value *LHS, ///< The left-hand-side of the expression
935 Value *RHS, ///< The right-hand-side of the expression
936 const std::string &NameStr = "", ///< Name of the instruction
937 Instruction *InsertBefore = 0 ///< Where to insert
938 ) : CmpInst(VectorType::getInteger(cast<VectorType>(LHS->getType())),
939 Instruction::VFCmp, pred, LHS, RHS, NameStr, InsertBefore) {
940 assert(pred <= CmpInst::LAST_FCMP_PREDICATE &&
941 "Invalid VFCmp predicate value");
942 assert(getOperand(0)->getType() == getOperand(1)->getType() &&
943 "Both operands to VFCmp instruction are not of the same type!");
946 /// @brief Constructor with insert-at-block-end semantics.
948 Predicate pred, ///< The predicate to use for the comparison
949 Value *LHS, ///< The left-hand-side of the expression
950 Value *RHS, ///< The right-hand-side of the expression
951 const std::string &NameStr, ///< Name of the instruction
952 BasicBlock *InsertAtEnd ///< Block to insert into.
953 ) : CmpInst(VectorType::getInteger(cast<VectorType>(LHS->getType())),
954 Instruction::VFCmp, pred, LHS, RHS, NameStr, InsertAtEnd) {
955 assert(pred <= CmpInst::LAST_FCMP_PREDICATE &&
956 "Invalid VFCmp predicate value");
957 assert(getOperand(0)->getType() == getOperand(1)->getType() &&
958 "Both operands to VFCmp instruction are not of the same type!");
961 /// @brief Return the predicate for this instruction.
962 Predicate getPredicate() const { return Predicate(SubclassData); }
964 virtual VFCmpInst *clone() const;
966 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
967 static inline bool classof(const VFCmpInst *) { return true; }
968 static inline bool classof(const Instruction *I) {
969 return I->getOpcode() == Instruction::VFCmp;
971 static inline bool classof(const Value *V) {
972 return isa<Instruction>(V) && classof(cast<Instruction>(V));
976 //===----------------------------------------------------------------------===//
978 //===----------------------------------------------------------------------===//
979 /// CallInst - This class represents a function call, abstracting a target
980 /// machine's calling convention. This class uses low bit of the SubClassData
981 /// field to indicate whether or not this is a tail call. The rest of the bits
982 /// hold the calling convention of the call.
985 class CallInst : public Instruction {
986 AttrListPtr AttributeList; ///< parameter attributes for call
987 CallInst(const CallInst &CI);
988 void init(Value *Func, Value* const *Params, unsigned NumParams);
989 void init(Value *Func, Value *Actual1, Value *Actual2);
990 void init(Value *Func, Value *Actual);
991 void init(Value *Func);
993 template<typename InputIterator>
994 void init(Value *Func, InputIterator ArgBegin, InputIterator ArgEnd,
995 const std::string &NameStr,
996 // This argument ensures that we have an iterator we can
997 // do arithmetic on in constant time
998 std::random_access_iterator_tag) {
999 unsigned NumArgs = (unsigned)std::distance(ArgBegin, ArgEnd);
1001 // This requires that the iterator points to contiguous memory.
1002 init(Func, NumArgs ? &*ArgBegin : 0, NumArgs);
1006 /// Construct a CallInst given a range of arguments. InputIterator
1007 /// must be a random-access iterator pointing to contiguous storage
1008 /// (e.g. a std::vector<>::iterator). Checks are made for
1009 /// random-accessness but not for contiguous storage as that would
1010 /// incur runtime overhead.
1011 /// @brief Construct a CallInst from a range of arguments
1012 template<typename InputIterator>
1013 CallInst(Value *Func, InputIterator ArgBegin, InputIterator ArgEnd,
1014 const std::string &NameStr, Instruction *InsertBefore);
1016 /// Construct a CallInst given a range of arguments. InputIterator
1017 /// must be a random-access iterator pointing to contiguous storage
1018 /// (e.g. a std::vector<>::iterator). Checks are made for
1019 /// random-accessness but not for contiguous storage as that would
1020 /// incur runtime overhead.
1021 /// @brief Construct a CallInst from a range of arguments
1022 template<typename InputIterator>
1023 inline CallInst(Value *Func, InputIterator ArgBegin, InputIterator ArgEnd,
1024 const std::string &NameStr, BasicBlock *InsertAtEnd);
1026 CallInst(Value *F, Value *Actual, const std::string& NameStr,
1027 Instruction *InsertBefore);
1028 CallInst(Value *F, Value *Actual, const std::string& NameStr,
1029 BasicBlock *InsertAtEnd);
1030 explicit CallInst(Value *F, const std::string &NameStr,
1031 Instruction *InsertBefore);
1032 CallInst(Value *F, const std::string &NameStr, BasicBlock *InsertAtEnd);
1034 template<typename InputIterator>
1035 static CallInst *Create(Value *Func,
1036 InputIterator ArgBegin, InputIterator ArgEnd,
1037 const std::string &NameStr = "",
1038 Instruction *InsertBefore = 0) {
1039 return new((unsigned)(ArgEnd - ArgBegin + 1))
1040 CallInst(Func, ArgBegin, ArgEnd, NameStr, InsertBefore);
1042 template<typename InputIterator>
1043 static CallInst *Create(Value *Func,
1044 InputIterator ArgBegin, InputIterator ArgEnd,
1045 const std::string &NameStr, BasicBlock *InsertAtEnd) {
1046 return new((unsigned)(ArgEnd - ArgBegin + 1))
1047 CallInst(Func, ArgBegin, ArgEnd, NameStr, InsertAtEnd);
1049 static CallInst *Create(Value *F, Value *Actual,
1050 const std::string& NameStr = "",
1051 Instruction *InsertBefore = 0) {
1052 return new(2) CallInst(F, Actual, NameStr, InsertBefore);
1054 static CallInst *Create(Value *F, Value *Actual, const std::string& NameStr,
1055 BasicBlock *InsertAtEnd) {
1056 return new(2) CallInst(F, Actual, NameStr, InsertAtEnd);
1058 static CallInst *Create(Value *F, const std::string &NameStr = "",
1059 Instruction *InsertBefore = 0) {
1060 return new(1) CallInst(F, NameStr, InsertBefore);
1062 static CallInst *Create(Value *F, const std::string &NameStr,
1063 BasicBlock *InsertAtEnd) {
1064 return new(1) CallInst(F, NameStr, InsertAtEnd);
1069 bool isTailCall() const { return SubclassData & 1; }
1070 void setTailCall(bool isTC = true) {
1071 SubclassData = (SubclassData & ~1) | unsigned(isTC);
1074 virtual CallInst *clone() const;
1076 /// Provide fast operand accessors
1077 DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
1079 /// getCallingConv/setCallingConv - Get or set the calling convention of this
1081 unsigned getCallingConv() const { return SubclassData >> 1; }
1082 void setCallingConv(unsigned CC) {
1083 SubclassData = (SubclassData & 1) | (CC << 1);
1086 /// getAttributes - Return the parameter attributes for this call.
1088 const AttrListPtr &getAttributes() const { return AttributeList; }
1090 /// setAttributes - Set the parameter attributes for this call.
1092 void setAttributes(const AttrListPtr &Attrs) { AttributeList = Attrs; }
1094 /// addAttribute - adds the attribute to the list of attributes.
1095 void addAttribute(unsigned i, Attributes attr);
1097 /// removeAttribute - removes the attribute from the list of attributes.
1098 void removeAttribute(unsigned i, Attributes attr);
1100 /// @brief Determine whether the call or the callee has the given attribute.
1101 bool paramHasAttr(unsigned i, Attributes attr) const;
1103 /// @brief Extract the alignment for a call or parameter (0=unknown).
1104 unsigned getParamAlignment(unsigned i) const {
1105 return AttributeList.getParamAlignment(i);
1108 /// @brief Determine if the call does not access memory.
1109 bool doesNotAccessMemory() const {
1110 return paramHasAttr(~0, Attribute::ReadNone);
1112 void setDoesNotAccessMemory(bool NotAccessMemory = true) {
1113 if (NotAccessMemory) addAttribute(~0, Attribute::ReadNone);
1114 else removeAttribute(~0, Attribute::ReadNone);
1117 /// @brief Determine if the call does not access or only reads memory.
1118 bool onlyReadsMemory() const {
1119 return doesNotAccessMemory() || paramHasAttr(~0, Attribute::ReadOnly);
1121 void setOnlyReadsMemory(bool OnlyReadsMemory = true) {
1122 if (OnlyReadsMemory) addAttribute(~0, Attribute::ReadOnly);
1123 else removeAttribute(~0, Attribute::ReadOnly | Attribute::ReadNone);
1126 /// @brief Determine if the call cannot return.
1127 bool doesNotReturn() const {
1128 return paramHasAttr(~0, Attribute::NoReturn);
1130 void setDoesNotReturn(bool DoesNotReturn = true) {
1131 if (DoesNotReturn) addAttribute(~0, Attribute::NoReturn);
1132 else removeAttribute(~0, Attribute::NoReturn);
1135 /// @brief Determine if the call cannot unwind.
1136 bool doesNotThrow() const {
1137 return paramHasAttr(~0, Attribute::NoUnwind);
1139 void setDoesNotThrow(bool DoesNotThrow = true) {
1140 if (DoesNotThrow) addAttribute(~0, Attribute::NoUnwind);
1141 else removeAttribute(~0, Attribute::NoUnwind);
1144 /// @brief Determine if the call returns a structure through first
1145 /// pointer argument.
1146 bool hasStructRetAttr() const {
1147 // Be friendly and also check the callee.
1148 return paramHasAttr(1, Attribute::StructRet);
1151 /// @brief Determine if any call argument is an aggregate passed by value.
1152 bool hasByValArgument() const {
1153 return AttributeList.hasAttrSomewhere(Attribute::ByVal);
1156 /// getCalledFunction - Return the function called, or null if this is an
1157 /// indirect function invocation.
1159 Function *getCalledFunction() const {
1160 return dyn_cast<Function>(Op<0>());
1163 /// getCalledValue - Get a pointer to the function that is invoked by this
1165 const Value *getCalledValue() const { return Op<0>(); }
1166 Value *getCalledValue() { return Op<0>(); }
1168 // Methods for support type inquiry through isa, cast, and dyn_cast:
1169 static inline bool classof(const CallInst *) { return true; }
1170 static inline bool classof(const Instruction *I) {
1171 return I->getOpcode() == Instruction::Call;
1173 static inline bool classof(const Value *V) {
1174 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1179 struct OperandTraits<CallInst> : VariadicOperandTraits<1> {
1182 template<typename InputIterator>
1183 CallInst::CallInst(Value *Func, InputIterator ArgBegin, InputIterator ArgEnd,
1184 const std::string &NameStr, BasicBlock *InsertAtEnd)
1185 : Instruction(cast<FunctionType>(cast<PointerType>(Func->getType())
1186 ->getElementType())->getReturnType(),
1188 OperandTraits<CallInst>::op_end(this) - (ArgEnd - ArgBegin + 1),
1189 (unsigned)(ArgEnd - ArgBegin + 1), InsertAtEnd) {
1190 init(Func, ArgBegin, ArgEnd, NameStr,
1191 typename std::iterator_traits<InputIterator>::iterator_category());
1194 template<typename InputIterator>
1195 CallInst::CallInst(Value *Func, InputIterator ArgBegin, InputIterator ArgEnd,
1196 const std::string &NameStr, Instruction *InsertBefore)
1197 : Instruction(cast<FunctionType>(cast<PointerType>(Func->getType())
1198 ->getElementType())->getReturnType(),
1200 OperandTraits<CallInst>::op_end(this) - (ArgEnd - ArgBegin + 1),
1201 (unsigned)(ArgEnd - ArgBegin + 1), InsertBefore) {
1202 init(Func, ArgBegin, ArgEnd, NameStr,
1203 typename std::iterator_traits<InputIterator>::iterator_category());
1206 DEFINE_TRANSPARENT_OPERAND_ACCESSORS(CallInst, Value)
1208 //===----------------------------------------------------------------------===//
1210 //===----------------------------------------------------------------------===//
1212 /// SelectInst - This class represents the LLVM 'select' instruction.
1214 class SelectInst : public Instruction {
1215 void init(Value *C, Value *S1, Value *S2) {
1216 assert(!areInvalidOperands(C, S1, S2) && "Invalid operands for select");
1222 SelectInst(const SelectInst &SI)
1223 : Instruction(SI.getType(), SI.getOpcode(), &Op<0>(), 3) {
1224 init(SI.Op<0>(), SI.Op<1>(), SI.Op<2>());
1226 SelectInst(Value *C, Value *S1, Value *S2, const std::string &NameStr,
1227 Instruction *InsertBefore)
1228 : Instruction(S1->getType(), Instruction::Select,
1229 &Op<0>(), 3, InsertBefore) {
1233 SelectInst(Value *C, Value *S1, Value *S2, const std::string &NameStr,
1234 BasicBlock *InsertAtEnd)
1235 : Instruction(S1->getType(), Instruction::Select,
1236 &Op<0>(), 3, InsertAtEnd) {
1241 static SelectInst *Create(Value *C, Value *S1, Value *S2,
1242 const std::string &NameStr = "",
1243 Instruction *InsertBefore = 0) {
1244 return new(3) SelectInst(C, S1, S2, NameStr, InsertBefore);
1246 static SelectInst *Create(Value *C, Value *S1, Value *S2,
1247 const std::string &NameStr,
1248 BasicBlock *InsertAtEnd) {
1249 return new(3) SelectInst(C, S1, S2, NameStr, InsertAtEnd);
1252 Value *getCondition() const { return Op<0>(); }
1253 Value *getTrueValue() const { return Op<1>(); }
1254 Value *getFalseValue() const { return Op<2>(); }
1256 /// areInvalidOperands - Return a string if the specified operands are invalid
1257 /// for a select operation, otherwise return null.
1258 static const char *areInvalidOperands(Value *Cond, Value *True, Value *False);
1260 /// Transparently provide more efficient getOperand methods.
1261 DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
1263 OtherOps getOpcode() const {
1264 return static_cast<OtherOps>(Instruction::getOpcode());
1267 virtual SelectInst *clone() const;
1269 // Methods for support type inquiry through isa, cast, and dyn_cast:
1270 static inline bool classof(const SelectInst *) { return true; }
1271 static inline bool classof(const Instruction *I) {
1272 return I->getOpcode() == Instruction::Select;
1274 static inline bool classof(const Value *V) {
1275 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1280 struct OperandTraits<SelectInst> : FixedNumOperandTraits<3> {
1283 DEFINE_TRANSPARENT_OPERAND_ACCESSORS(SelectInst, Value)
1285 //===----------------------------------------------------------------------===//
1287 //===----------------------------------------------------------------------===//
1289 /// VAArgInst - This class represents the va_arg llvm instruction, which returns
1290 /// an argument of the specified type given a va_list and increments that list
1292 class VAArgInst : public UnaryInstruction {
1293 VAArgInst(const VAArgInst &VAA)
1294 : UnaryInstruction(VAA.getType(), VAArg, VAA.getOperand(0)) {}
1296 VAArgInst(Value *List, const Type *Ty, const std::string &NameStr = "",
1297 Instruction *InsertBefore = 0)
1298 : UnaryInstruction(Ty, VAArg, List, InsertBefore) {
1301 VAArgInst(Value *List, const Type *Ty, const std::string &NameStr,
1302 BasicBlock *InsertAtEnd)
1303 : UnaryInstruction(Ty, VAArg, List, InsertAtEnd) {
1307 virtual VAArgInst *clone() const;
1309 // Methods for support type inquiry through isa, cast, and dyn_cast:
1310 static inline bool classof(const VAArgInst *) { return true; }
1311 static inline bool classof(const Instruction *I) {
1312 return I->getOpcode() == VAArg;
1314 static inline bool classof(const Value *V) {
1315 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1319 //===----------------------------------------------------------------------===//
1320 // ExtractElementInst Class
1321 //===----------------------------------------------------------------------===//
1323 /// ExtractElementInst - This instruction extracts a single (scalar)
1324 /// element from a VectorType value
1326 class ExtractElementInst : public Instruction {
1327 ExtractElementInst(const ExtractElementInst &EE) :
1328 Instruction(EE.getType(), ExtractElement, &Op<0>(), 2) {
1329 Op<0>() = EE.Op<0>();
1330 Op<1>() = EE.Op<1>();
1334 // allocate space for exactly two operands
1335 void *operator new(size_t s) {
1336 return User::operator new(s, 2); // FIXME: "unsigned Idx" forms of ctor?
1338 ExtractElementInst(Value *Vec, Value *Idx, const std::string &NameStr = "",
1339 Instruction *InsertBefore = 0);
1340 ExtractElementInst(Value *Vec, unsigned Idx, const std::string &NameStr = "",
1341 Instruction *InsertBefore = 0);
1342 ExtractElementInst(Value *Vec, Value *Idx, const std::string &NameStr,
1343 BasicBlock *InsertAtEnd);
1344 ExtractElementInst(Value *Vec, unsigned Idx, const std::string &NameStr,
1345 BasicBlock *InsertAtEnd);
1347 /// isValidOperands - Return true if an extractelement instruction can be
1348 /// formed with the specified operands.
1349 static bool isValidOperands(const Value *Vec, const Value *Idx);
1351 virtual ExtractElementInst *clone() const;
1353 /// Transparently provide more efficient getOperand methods.
1354 DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
1356 // Methods for support type inquiry through isa, cast, and dyn_cast:
1357 static inline bool classof(const ExtractElementInst *) { return true; }
1358 static inline bool classof(const Instruction *I) {
1359 return I->getOpcode() == Instruction::ExtractElement;
1361 static inline bool classof(const Value *V) {
1362 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1367 struct OperandTraits<ExtractElementInst> : FixedNumOperandTraits<2> {
1370 DEFINE_TRANSPARENT_OPERAND_ACCESSORS(ExtractElementInst, Value)
1372 //===----------------------------------------------------------------------===//
1373 // InsertElementInst Class
1374 //===----------------------------------------------------------------------===//
1376 /// InsertElementInst - This instruction inserts a single (scalar)
1377 /// element into a VectorType value
1379 class InsertElementInst : public Instruction {
1380 InsertElementInst(const InsertElementInst &IE);
1381 InsertElementInst(Value *Vec, Value *NewElt, Value *Idx,
1382 const std::string &NameStr = "",
1383 Instruction *InsertBefore = 0);
1384 InsertElementInst(Value *Vec, Value *NewElt, unsigned Idx,
1385 const std::string &NameStr = "",
1386 Instruction *InsertBefore = 0);
1387 InsertElementInst(Value *Vec, Value *NewElt, Value *Idx,
1388 const std::string &NameStr, BasicBlock *InsertAtEnd);
1389 InsertElementInst(Value *Vec, Value *NewElt, unsigned Idx,
1390 const std::string &NameStr, BasicBlock *InsertAtEnd);
1392 static InsertElementInst *Create(const InsertElementInst &IE) {
1393 return new(IE.getNumOperands()) InsertElementInst(IE);
1395 static InsertElementInst *Create(Value *Vec, Value *NewElt, Value *Idx,
1396 const std::string &NameStr = "",
1397 Instruction *InsertBefore = 0) {
1398 return new(3) InsertElementInst(Vec, NewElt, Idx, NameStr, InsertBefore);
1400 static InsertElementInst *Create(Value *Vec, Value *NewElt, unsigned Idx,
1401 const std::string &NameStr = "",
1402 Instruction *InsertBefore = 0) {
1403 return new(3) InsertElementInst(Vec, NewElt, Idx, NameStr, InsertBefore);
1405 static InsertElementInst *Create(Value *Vec, Value *NewElt, Value *Idx,
1406 const std::string &NameStr,
1407 BasicBlock *InsertAtEnd) {
1408 return new(3) InsertElementInst(Vec, NewElt, Idx, NameStr, InsertAtEnd);
1410 static InsertElementInst *Create(Value *Vec, Value *NewElt, unsigned Idx,
1411 const std::string &NameStr,
1412 BasicBlock *InsertAtEnd) {
1413 return new(3) InsertElementInst(Vec, NewElt, Idx, NameStr, InsertAtEnd);
1416 /// isValidOperands - Return true if an insertelement instruction can be
1417 /// formed with the specified operands.
1418 static bool isValidOperands(const Value *Vec, const Value *NewElt,
1421 virtual InsertElementInst *clone() const;
1423 /// getType - Overload to return most specific vector type.
1425 const VectorType *getType() const {
1426 return reinterpret_cast<const VectorType*>(Instruction::getType());
1429 /// Transparently provide more efficient getOperand methods.
1430 DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
1432 // Methods for support type inquiry through isa, cast, and dyn_cast:
1433 static inline bool classof(const InsertElementInst *) { return true; }
1434 static inline bool classof(const Instruction *I) {
1435 return I->getOpcode() == Instruction::InsertElement;
1437 static inline bool classof(const Value *V) {
1438 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1443 struct OperandTraits<InsertElementInst> : FixedNumOperandTraits<3> {
1446 DEFINE_TRANSPARENT_OPERAND_ACCESSORS(InsertElementInst, Value)
1448 //===----------------------------------------------------------------------===//
1449 // ShuffleVectorInst Class
1450 //===----------------------------------------------------------------------===//
1452 /// ShuffleVectorInst - This instruction constructs a fixed permutation of two
1455 class ShuffleVectorInst : public Instruction {
1456 ShuffleVectorInst(const ShuffleVectorInst &IE);
1458 // allocate space for exactly three operands
1459 void *operator new(size_t s) {
1460 return User::operator new(s, 3);
1462 ShuffleVectorInst(Value *V1, Value *V2, Value *Mask,
1463 const std::string &NameStr = "",
1464 Instruction *InsertBefor = 0);
1465 ShuffleVectorInst(Value *V1, Value *V2, Value *Mask,
1466 const std::string &NameStr, BasicBlock *InsertAtEnd);
1468 /// isValidOperands - Return true if a shufflevector instruction can be
1469 /// formed with the specified operands.
1470 static bool isValidOperands(const Value *V1, const Value *V2,
1473 virtual ShuffleVectorInst *clone() const;
1475 /// getType - Overload to return most specific vector type.
1477 const VectorType *getType() const {
1478 return reinterpret_cast<const VectorType*>(Instruction::getType());
1481 /// Transparently provide more efficient getOperand methods.
1482 DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
1484 /// getMaskValue - Return the index from the shuffle mask for the specified
1485 /// output result. This is either -1 if the element is undef or a number less
1486 /// than 2*numelements.
1487 int getMaskValue(unsigned i) const;
1489 // Methods for support type inquiry through isa, cast, and dyn_cast:
1490 static inline bool classof(const ShuffleVectorInst *) { return true; }
1491 static inline bool classof(const Instruction *I) {
1492 return I->getOpcode() == Instruction::ShuffleVector;
1494 static inline bool classof(const Value *V) {
1495 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1500 struct OperandTraits<ShuffleVectorInst> : FixedNumOperandTraits<3> {
1503 DEFINE_TRANSPARENT_OPERAND_ACCESSORS(ShuffleVectorInst, Value)
1505 //===----------------------------------------------------------------------===//
1506 // ExtractValueInst Class
1507 //===----------------------------------------------------------------------===//
1509 /// ExtractValueInst - This instruction extracts a struct member or array
1510 /// element value from an aggregate value.
1512 class ExtractValueInst : public UnaryInstruction {
1513 SmallVector<unsigned, 4> Indices;
1515 ExtractValueInst(const ExtractValueInst &EVI);
1516 void init(const unsigned *Idx, unsigned NumIdx,
1517 const std::string &NameStr);
1518 void init(unsigned Idx, const std::string &NameStr);
1520 template<typename InputIterator>
1521 void init(InputIterator IdxBegin, InputIterator IdxEnd,
1522 const std::string &NameStr,
1523 // This argument ensures that we have an iterator we can
1524 // do arithmetic on in constant time
1525 std::random_access_iterator_tag) {
1526 unsigned NumIdx = static_cast<unsigned>(std::distance(IdxBegin, IdxEnd));
1528 // There's no fundamental reason why we require at least one index
1529 // (other than weirdness with &*IdxBegin being invalid; see
1530 // getelementptr's init routine for example). But there's no
1531 // present need to support it.
1532 assert(NumIdx > 0 && "ExtractValueInst must have at least one index");
1534 // This requires that the iterator points to contiguous memory.
1535 init(&*IdxBegin, NumIdx, NameStr); // FIXME: for the general case
1536 // we have to build an array here
1539 /// getIndexedType - Returns the type of the element that would be extracted
1540 /// with an extractvalue instruction with the specified parameters.
1542 /// Null is returned if the indices are invalid for the specified
1545 static const Type *getIndexedType(const Type *Agg,
1546 const unsigned *Idx, unsigned NumIdx);
1548 template<typename InputIterator>
1549 static const Type *getIndexedType(const Type *Ptr,
1550 InputIterator IdxBegin,
1551 InputIterator IdxEnd,
1552 // This argument ensures that we
1553 // have an iterator we can do
1554 // arithmetic on in constant time
1555 std::random_access_iterator_tag) {
1556 unsigned NumIdx = static_cast<unsigned>(std::distance(IdxBegin, IdxEnd));
1559 // This requires that the iterator points to contiguous memory.
1560 return getIndexedType(Ptr, &*IdxBegin, NumIdx);
1562 return getIndexedType(Ptr, (const unsigned *)0, NumIdx);
1565 /// Constructors - Create a extractvalue instruction with a base aggregate
1566 /// value and a list of indices. The first ctor can optionally insert before
1567 /// an existing instruction, the second appends the new instruction to the
1568 /// specified BasicBlock.
1569 template<typename InputIterator>
1570 inline ExtractValueInst(Value *Agg, InputIterator IdxBegin,
1571 InputIterator IdxEnd,
1572 const std::string &NameStr,
1573 Instruction *InsertBefore);
1574 template<typename InputIterator>
1575 inline ExtractValueInst(Value *Agg,
1576 InputIterator IdxBegin, InputIterator IdxEnd,
1577 const std::string &NameStr, BasicBlock *InsertAtEnd);
1579 // allocate space for exactly one operand
1580 void *operator new(size_t s) {
1581 return User::operator new(s, 1);
1585 template<typename InputIterator>
1586 static ExtractValueInst *Create(Value *Agg, InputIterator IdxBegin,
1587 InputIterator IdxEnd,
1588 const std::string &NameStr = "",
1589 Instruction *InsertBefore = 0) {
1591 ExtractValueInst(Agg, IdxBegin, IdxEnd, NameStr, InsertBefore);
1593 template<typename InputIterator>
1594 static ExtractValueInst *Create(Value *Agg,
1595 InputIterator IdxBegin, InputIterator IdxEnd,
1596 const std::string &NameStr,
1597 BasicBlock *InsertAtEnd) {
1598 return new ExtractValueInst(Agg, IdxBegin, IdxEnd, NameStr, InsertAtEnd);
1601 /// Constructors - These two creators are convenience methods because one
1602 /// index extractvalue instructions are much more common than those with
1604 static ExtractValueInst *Create(Value *Agg, unsigned Idx,
1605 const std::string &NameStr = "",
1606 Instruction *InsertBefore = 0) {
1607 unsigned Idxs[1] = { Idx };
1608 return new ExtractValueInst(Agg, Idxs, Idxs + 1, NameStr, InsertBefore);
1610 static ExtractValueInst *Create(Value *Agg, unsigned Idx,
1611 const std::string &NameStr,
1612 BasicBlock *InsertAtEnd) {
1613 unsigned Idxs[1] = { Idx };
1614 return new ExtractValueInst(Agg, Idxs, Idxs + 1, NameStr, InsertAtEnd);
1617 virtual ExtractValueInst *clone() const;
1619 /// getIndexedType - Returns the type of the element that would be extracted
1620 /// with an extractvalue instruction with the specified parameters.
1622 /// Null is returned if the indices are invalid for the specified
1625 template<typename InputIterator>
1626 static const Type *getIndexedType(const Type *Ptr,
1627 InputIterator IdxBegin,
1628 InputIterator IdxEnd) {
1629 return getIndexedType(Ptr, IdxBegin, IdxEnd,
1630 typename std::iterator_traits<InputIterator>::
1631 iterator_category());
1633 static const Type *getIndexedType(const Type *Ptr, unsigned Idx);
1635 typedef const unsigned* idx_iterator;
1636 inline idx_iterator idx_begin() const { return Indices.begin(); }
1637 inline idx_iterator idx_end() const { return Indices.end(); }
1639 Value *getAggregateOperand() {
1640 return getOperand(0);
1642 const Value *getAggregateOperand() const {
1643 return getOperand(0);
1645 static unsigned getAggregateOperandIndex() {
1646 return 0U; // get index for modifying correct operand
1649 unsigned getNumIndices() const { // Note: always non-negative
1650 return (unsigned)Indices.size();
1653 bool hasIndices() const {
1657 // Methods for support type inquiry through isa, cast, and dyn_cast:
1658 static inline bool classof(const ExtractValueInst *) { return true; }
1659 static inline bool classof(const Instruction *I) {
1660 return I->getOpcode() == Instruction::ExtractValue;
1662 static inline bool classof(const Value *V) {
1663 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1667 template<typename InputIterator>
1668 ExtractValueInst::ExtractValueInst(Value *Agg,
1669 InputIterator IdxBegin,
1670 InputIterator IdxEnd,
1671 const std::string &NameStr,
1672 Instruction *InsertBefore)
1673 : UnaryInstruction(checkType(getIndexedType(Agg->getType(),
1675 ExtractValue, Agg, InsertBefore) {
1676 init(IdxBegin, IdxEnd, NameStr,
1677 typename std::iterator_traits<InputIterator>::iterator_category());
1679 template<typename InputIterator>
1680 ExtractValueInst::ExtractValueInst(Value *Agg,
1681 InputIterator IdxBegin,
1682 InputIterator IdxEnd,
1683 const std::string &NameStr,
1684 BasicBlock *InsertAtEnd)
1685 : UnaryInstruction(checkType(getIndexedType(Agg->getType(),
1687 ExtractValue, Agg, InsertAtEnd) {
1688 init(IdxBegin, IdxEnd, NameStr,
1689 typename std::iterator_traits<InputIterator>::iterator_category());
1693 //===----------------------------------------------------------------------===//
1694 // InsertValueInst Class
1695 //===----------------------------------------------------------------------===//
1697 /// InsertValueInst - This instruction inserts a struct field of array element
1698 /// value into an aggregate value.
1700 class InsertValueInst : public Instruction {
1701 SmallVector<unsigned, 4> Indices;
1703 void *operator new(size_t, unsigned); // Do not implement
1704 InsertValueInst(const InsertValueInst &IVI);
1705 void init(Value *Agg, Value *Val, const unsigned *Idx, unsigned NumIdx,
1706 const std::string &NameStr);
1707 void init(Value *Agg, Value *Val, unsigned Idx, const std::string &NameStr);
1709 template<typename InputIterator>
1710 void init(Value *Agg, Value *Val,
1711 InputIterator IdxBegin, InputIterator IdxEnd,
1712 const std::string &NameStr,
1713 // This argument ensures that we have an iterator we can
1714 // do arithmetic on in constant time
1715 std::random_access_iterator_tag) {
1716 unsigned NumIdx = static_cast<unsigned>(std::distance(IdxBegin, IdxEnd));
1718 // There's no fundamental reason why we require at least one index
1719 // (other than weirdness with &*IdxBegin being invalid; see
1720 // getelementptr's init routine for example). But there's no
1721 // present need to support it.
1722 assert(NumIdx > 0 && "InsertValueInst must have at least one index");
1724 // This requires that the iterator points to contiguous memory.
1725 init(Agg, Val, &*IdxBegin, NumIdx, NameStr); // FIXME: for the general case
1726 // we have to build an array here
1729 /// Constructors - Create a insertvalue instruction with a base aggregate
1730 /// value, a value to insert, and a list of indices. The first ctor can
1731 /// optionally insert before an existing instruction, the second appends
1732 /// the new instruction to the specified BasicBlock.
1733 template<typename InputIterator>
1734 inline InsertValueInst(Value *Agg, Value *Val, InputIterator IdxBegin,
1735 InputIterator IdxEnd,
1736 const std::string &NameStr,
1737 Instruction *InsertBefore);
1738 template<typename InputIterator>
1739 inline InsertValueInst(Value *Agg, Value *Val,
1740 InputIterator IdxBegin, InputIterator IdxEnd,
1741 const std::string &NameStr, BasicBlock *InsertAtEnd);
1743 /// Constructors - These two constructors are convenience methods because one
1744 /// and two index insertvalue instructions are so common.
1745 InsertValueInst(Value *Agg, Value *Val,
1746 unsigned Idx, const std::string &NameStr = "",
1747 Instruction *InsertBefore = 0);
1748 InsertValueInst(Value *Agg, Value *Val, unsigned Idx,
1749 const std::string &NameStr, BasicBlock *InsertAtEnd);
1751 // allocate space for exactly two operands
1752 void *operator new(size_t s) {
1753 return User::operator new(s, 2);
1756 template<typename InputIterator>
1757 static InsertValueInst *Create(Value *Agg, Value *Val, InputIterator IdxBegin,
1758 InputIterator IdxEnd,
1759 const std::string &NameStr = "",
1760 Instruction *InsertBefore = 0) {
1761 return new InsertValueInst(Agg, Val, IdxBegin, IdxEnd,
1762 NameStr, InsertBefore);
1764 template<typename InputIterator>
1765 static InsertValueInst *Create(Value *Agg, Value *Val,
1766 InputIterator IdxBegin, InputIterator IdxEnd,
1767 const std::string &NameStr,
1768 BasicBlock *InsertAtEnd) {
1769 return new InsertValueInst(Agg, Val, IdxBegin, IdxEnd,
1770 NameStr, InsertAtEnd);
1773 /// Constructors - These two creators are convenience methods because one
1774 /// index insertvalue instructions are much more common than those with
1776 static InsertValueInst *Create(Value *Agg, Value *Val, unsigned Idx,
1777 const std::string &NameStr = "",
1778 Instruction *InsertBefore = 0) {
1779 return new InsertValueInst(Agg, Val, Idx, NameStr, InsertBefore);
1781 static InsertValueInst *Create(Value *Agg, Value *Val, unsigned Idx,
1782 const std::string &NameStr,
1783 BasicBlock *InsertAtEnd) {
1784 return new InsertValueInst(Agg, Val, Idx, NameStr, InsertAtEnd);
1787 virtual InsertValueInst *clone() const;
1789 /// Transparently provide more efficient getOperand methods.
1790 DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
1792 typedef const unsigned* idx_iterator;
1793 inline idx_iterator idx_begin() const { return Indices.begin(); }
1794 inline idx_iterator idx_end() const { return Indices.end(); }
1796 Value *getAggregateOperand() {
1797 return getOperand(0);
1799 const Value *getAggregateOperand() const {
1800 return getOperand(0);
1802 static unsigned getAggregateOperandIndex() {
1803 return 0U; // get index for modifying correct operand
1806 Value *getInsertedValueOperand() {
1807 return getOperand(1);
1809 const Value *getInsertedValueOperand() const {
1810 return getOperand(1);
1812 static unsigned getInsertedValueOperandIndex() {
1813 return 1U; // get index for modifying correct operand
1816 unsigned getNumIndices() const { // Note: always non-negative
1817 return (unsigned)Indices.size();
1820 bool hasIndices() const {
1824 // Methods for support type inquiry through isa, cast, and dyn_cast:
1825 static inline bool classof(const InsertValueInst *) { return true; }
1826 static inline bool classof(const Instruction *I) {
1827 return I->getOpcode() == Instruction::InsertValue;
1829 static inline bool classof(const Value *V) {
1830 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1835 struct OperandTraits<InsertValueInst> : FixedNumOperandTraits<2> {
1838 template<typename InputIterator>
1839 InsertValueInst::InsertValueInst(Value *Agg,
1841 InputIterator IdxBegin,
1842 InputIterator IdxEnd,
1843 const std::string &NameStr,
1844 Instruction *InsertBefore)
1845 : Instruction(Agg->getType(), InsertValue,
1846 OperandTraits<InsertValueInst>::op_begin(this),
1848 init(Agg, Val, IdxBegin, IdxEnd, NameStr,
1849 typename std::iterator_traits<InputIterator>::iterator_category());
1851 template<typename InputIterator>
1852 InsertValueInst::InsertValueInst(Value *Agg,
1854 InputIterator IdxBegin,
1855 InputIterator IdxEnd,
1856 const std::string &NameStr,
1857 BasicBlock *InsertAtEnd)
1858 : Instruction(Agg->getType(), InsertValue,
1859 OperandTraits<InsertValueInst>::op_begin(this),
1861 init(Agg, Val, IdxBegin, IdxEnd, NameStr,
1862 typename std::iterator_traits<InputIterator>::iterator_category());
1865 DEFINE_TRANSPARENT_OPERAND_ACCESSORS(InsertValueInst, Value)
1867 //===----------------------------------------------------------------------===//
1869 //===----------------------------------------------------------------------===//
1871 // PHINode - The PHINode class is used to represent the magical mystical PHI
1872 // node, that can not exist in nature, but can be synthesized in a computer
1873 // scientist's overactive imagination.
1875 class PHINode : public Instruction {
1876 void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
1877 /// ReservedSpace - The number of operands actually allocated. NumOperands is
1878 /// the number actually in use.
1879 unsigned ReservedSpace;
1880 PHINode(const PHINode &PN);
1881 // allocate space for exactly zero operands
1882 void *operator new(size_t s) {
1883 return User::operator new(s, 0);
1885 explicit PHINode(const Type *Ty, const std::string &NameStr = "",
1886 Instruction *InsertBefore = 0)
1887 : Instruction(Ty, Instruction::PHI, 0, 0, InsertBefore),
1892 PHINode(const Type *Ty, const std::string &NameStr, BasicBlock *InsertAtEnd)
1893 : Instruction(Ty, Instruction::PHI, 0, 0, InsertAtEnd),
1898 static PHINode *Create(const Type *Ty, const std::string &NameStr = "",
1899 Instruction *InsertBefore = 0) {
1900 return new PHINode(Ty, NameStr, InsertBefore);
1902 static PHINode *Create(const Type *Ty, const std::string &NameStr,
1903 BasicBlock *InsertAtEnd) {
1904 return new PHINode(Ty, NameStr, InsertAtEnd);
1908 /// reserveOperandSpace - This method can be used to avoid repeated
1909 /// reallocation of PHI operand lists by reserving space for the correct
1910 /// number of operands before adding them. Unlike normal vector reserves,
1911 /// this method can also be used to trim the operand space.
1912 void reserveOperandSpace(unsigned NumValues) {
1913 resizeOperands(NumValues*2);
1916 virtual PHINode *clone() const;
1918 /// Provide fast operand accessors
1919 DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
1921 /// getNumIncomingValues - Return the number of incoming edges
1923 unsigned getNumIncomingValues() const { return getNumOperands()/2; }
1925 /// getIncomingValue - Return incoming value number x
1927 Value *getIncomingValue(unsigned i) const {
1928 assert(i*2 < getNumOperands() && "Invalid value number!");
1929 return getOperand(i*2);
1931 void setIncomingValue(unsigned i, Value *V) {
1932 assert(i*2 < getNumOperands() && "Invalid value number!");
1935 static unsigned getOperandNumForIncomingValue(unsigned i) {
1938 static unsigned getIncomingValueNumForOperand(unsigned i) {
1939 assert(i % 2 == 0 && "Invalid incoming-value operand index!");
1943 /// getIncomingBlock - Return incoming basic block corresponding
1944 /// to value use iterator
1946 template <typename U>
1947 BasicBlock *getIncomingBlock(value_use_iterator<U> I) const {
1948 assert(this == *I && "Iterator doesn't point to PHI's Uses?");
1949 return static_cast<BasicBlock*>((&I.getUse() + 1)->get());
1951 /// getIncomingBlock - Return incoming basic block number x
1953 BasicBlock *getIncomingBlock(unsigned i) const {
1954 return static_cast<BasicBlock*>(getOperand(i*2+1));
1956 void setIncomingBlock(unsigned i, BasicBlock *BB) {
1957 setOperand(i*2+1, BB);
1959 static unsigned getOperandNumForIncomingBlock(unsigned i) {
1962 static unsigned getIncomingBlockNumForOperand(unsigned i) {
1963 assert(i % 2 == 1 && "Invalid incoming-block operand index!");
1967 /// addIncoming - Add an incoming value to the end of the PHI list
1969 void addIncoming(Value *V, BasicBlock *BB) {
1970 assert(V && "PHI node got a null value!");
1971 assert(BB && "PHI node got a null basic block!");
1972 assert(getType() == V->getType() &&
1973 "All operands to PHI node must be the same type as the PHI node!");
1974 unsigned OpNo = NumOperands;
1975 if (OpNo+2 > ReservedSpace)
1976 resizeOperands(0); // Get more space!
1977 // Initialize some new operands.
1978 NumOperands = OpNo+2;
1979 OperandList[OpNo] = V;
1980 OperandList[OpNo+1] = BB;
1983 /// removeIncomingValue - Remove an incoming value. This is useful if a
1984 /// predecessor basic block is deleted. The value removed is returned.
1986 /// If the last incoming value for a PHI node is removed (and DeletePHIIfEmpty
1987 /// is true), the PHI node is destroyed and any uses of it are replaced with
1988 /// dummy values. The only time there should be zero incoming values to a PHI
1989 /// node is when the block is dead, so this strategy is sound.
1991 Value *removeIncomingValue(unsigned Idx, bool DeletePHIIfEmpty = true);
1993 Value *removeIncomingValue(const BasicBlock *BB, bool DeletePHIIfEmpty=true) {
1994 int Idx = getBasicBlockIndex(BB);
1995 assert(Idx >= 0 && "Invalid basic block argument to remove!");
1996 return removeIncomingValue(Idx, DeletePHIIfEmpty);
1999 /// getBasicBlockIndex - Return the first index of the specified basic
2000 /// block in the value list for this PHI. Returns -1 if no instance.
2002 int getBasicBlockIndex(const BasicBlock *BB) const {
2003 Use *OL = OperandList;
2004 for (unsigned i = 0, e = getNumOperands(); i != e; i += 2)
2005 if (OL[i+1].get() == BB) return i/2;
2009 Value *getIncomingValueForBlock(const BasicBlock *BB) const {
2010 return getIncomingValue(getBasicBlockIndex(BB));
2013 /// hasConstantValue - If the specified PHI node always merges together the
2014 /// same value, return the value, otherwise return null.
2016 Value *hasConstantValue(bool AllowNonDominatingInstruction = false) const;
2018 /// Methods for support type inquiry through isa, cast, and dyn_cast:
2019 static inline bool classof(const PHINode *) { return true; }
2020 static inline bool classof(const Instruction *I) {
2021 return I->getOpcode() == Instruction::PHI;
2023 static inline bool classof(const Value *V) {
2024 return isa<Instruction>(V) && classof(cast<Instruction>(V));
2027 void resizeOperands(unsigned NumOperands);
2031 struct OperandTraits<PHINode> : HungoffOperandTraits<2> {
2034 DEFINE_TRANSPARENT_OPERAND_ACCESSORS(PHINode, Value)
2037 //===----------------------------------------------------------------------===//
2039 //===----------------------------------------------------------------------===//
2041 //===---------------------------------------------------------------------------
2042 /// ReturnInst - Return a value (possibly void), from a function. Execution
2043 /// does not continue in this function any longer.
2045 class ReturnInst : public TerminatorInst {
2046 ReturnInst(const ReturnInst &RI);
2049 // ReturnInst constructors:
2050 // ReturnInst() - 'ret void' instruction
2051 // ReturnInst( null) - 'ret void' instruction
2052 // ReturnInst(Value* X) - 'ret X' instruction
2053 // ReturnInst( null, Inst *I) - 'ret void' instruction, insert before I
2054 // ReturnInst(Value* X, Inst *I) - 'ret X' instruction, insert before I
2055 // ReturnInst( null, BB *B) - 'ret void' instruction, insert @ end of B
2056 // ReturnInst(Value* X, BB *B) - 'ret X' instruction, insert @ end of B
2058 // NOTE: If the Value* passed is of type void then the constructor behaves as
2059 // if it was passed NULL.
2060 explicit ReturnInst(Value *retVal = 0, Instruction *InsertBefore = 0);
2061 ReturnInst(Value *retVal, BasicBlock *InsertAtEnd);
2062 explicit ReturnInst(BasicBlock *InsertAtEnd);
2064 static ReturnInst* Create(Value *retVal = 0, Instruction *InsertBefore = 0) {
2065 return new(!!retVal) ReturnInst(retVal, InsertBefore);
2067 static ReturnInst* Create(Value *retVal, BasicBlock *InsertAtEnd) {
2068 return new(!!retVal) ReturnInst(retVal, InsertAtEnd);
2070 static ReturnInst* Create(BasicBlock *InsertAtEnd) {
2071 return new(0) ReturnInst(InsertAtEnd);
2073 virtual ~ReturnInst();
2075 virtual ReturnInst *clone() const;
2077 /// Provide fast operand accessors
2078 DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
2080 /// Convenience accessor
2081 Value *getReturnValue(unsigned n = 0) const {
2082 return n < getNumOperands()
2087 unsigned getNumSuccessors() const { return 0; }
2089 // Methods for support type inquiry through isa, cast, and dyn_cast:
2090 static inline bool classof(const ReturnInst *) { return true; }
2091 static inline bool classof(const Instruction *I) {
2092 return (I->getOpcode() == Instruction::Ret);
2094 static inline bool classof(const Value *V) {
2095 return isa<Instruction>(V) && classof(cast<Instruction>(V));
2098 virtual BasicBlock *getSuccessorV(unsigned idx) const;
2099 virtual unsigned getNumSuccessorsV() const;
2100 virtual void setSuccessorV(unsigned idx, BasicBlock *B);
2104 struct OperandTraits<ReturnInst> : OptionalOperandTraits<> {
2107 DEFINE_TRANSPARENT_OPERAND_ACCESSORS(ReturnInst, Value)
2109 //===----------------------------------------------------------------------===//
2111 //===----------------------------------------------------------------------===//
2113 //===---------------------------------------------------------------------------
2114 /// BranchInst - Conditional or Unconditional Branch instruction.
2116 class BranchInst : public TerminatorInst {
2117 /// Ops list - Branches are strange. The operands are ordered:
2118 /// [Cond, FalseDest,] TrueDest. This makes some accessors faster because
2119 /// they don't have to check for cond/uncond branchness. These are mostly
2120 /// accessed relative from op_end().
2121 BranchInst(const BranchInst &BI);
2123 // BranchInst constructors (where {B, T, F} are blocks, and C is a condition):
2124 // BranchInst(BB *B) - 'br B'
2125 // BranchInst(BB* T, BB *F, Value *C) - 'br C, T, F'
2126 // BranchInst(BB* B, Inst *I) - 'br B' insert before I
2127 // BranchInst(BB* T, BB *F, Value *C, Inst *I) - 'br C, T, F', insert before I
2128 // BranchInst(BB* B, BB *I) - 'br B' insert at end
2129 // BranchInst(BB* T, BB *F, Value *C, BB *I) - 'br C, T, F', insert at end
2130 explicit BranchInst(BasicBlock *IfTrue, Instruction *InsertBefore = 0);
2131 BranchInst(BasicBlock *IfTrue, BasicBlock *IfFalse, Value *Cond,
2132 Instruction *InsertBefore = 0);
2133 BranchInst(BasicBlock *IfTrue, BasicBlock *InsertAtEnd);
2134 BranchInst(BasicBlock *IfTrue, BasicBlock *IfFalse, Value *Cond,
2135 BasicBlock *InsertAtEnd);
2137 static BranchInst *Create(BasicBlock *IfTrue, Instruction *InsertBefore = 0) {
2138 return new(1, true) BranchInst(IfTrue, InsertBefore);
2140 static BranchInst *Create(BasicBlock *IfTrue, BasicBlock *IfFalse,
2141 Value *Cond, Instruction *InsertBefore = 0) {
2142 return new(3) BranchInst(IfTrue, IfFalse, Cond, InsertBefore);
2144 static BranchInst *Create(BasicBlock *IfTrue, BasicBlock *InsertAtEnd) {
2145 return new(1, true) BranchInst(IfTrue, InsertAtEnd);
2147 static BranchInst *Create(BasicBlock *IfTrue, BasicBlock *IfFalse,
2148 Value *Cond, BasicBlock *InsertAtEnd) {
2149 return new(3) BranchInst(IfTrue, IfFalse, Cond, InsertAtEnd);
2154 /// Transparently provide more efficient getOperand methods.
2155 DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
2157 virtual BranchInst *clone() const;
2159 bool isUnconditional() const { return getNumOperands() == 1; }
2160 bool isConditional() const { return getNumOperands() == 3; }
2162 Value *getCondition() const {
2163 assert(isConditional() && "Cannot get condition of an uncond branch!");
2167 void setCondition(Value *V) {
2168 assert(isConditional() && "Cannot set condition of unconditional branch!");
2172 // setUnconditionalDest - Change the current branch to an unconditional branch
2173 // targeting the specified block.
2174 // FIXME: Eliminate this ugly method.
2175 void setUnconditionalDest(BasicBlock *Dest) {
2177 if (isConditional()) { // Convert this to an uncond branch.
2181 OperandList = op_begin();
2185 unsigned getNumSuccessors() const { return 1+isConditional(); }
2187 BasicBlock *getSuccessor(unsigned i) const {
2188 assert(i < getNumSuccessors() && "Successor # out of range for Branch!");
2189 return cast_or_null<BasicBlock>((&Op<-1>() - i)->get());
2192 void setSuccessor(unsigned idx, BasicBlock *NewSucc) {
2193 assert(idx < getNumSuccessors() && "Successor # out of range for Branch!");
2194 *(&Op<-1>() - idx) = NewSucc;
2197 // Methods for support type inquiry through isa, cast, and dyn_cast:
2198 static inline bool classof(const BranchInst *) { return true; }
2199 static inline bool classof(const Instruction *I) {
2200 return (I->getOpcode() == Instruction::Br);
2202 static inline bool classof(const Value *V) {
2203 return isa<Instruction>(V) && classof(cast<Instruction>(V));
2206 virtual BasicBlock *getSuccessorV(unsigned idx) const;
2207 virtual unsigned getNumSuccessorsV() const;
2208 virtual void setSuccessorV(unsigned idx, BasicBlock *B);
2212 struct OperandTraits<BranchInst> : VariadicOperandTraits<1> {};
2214 DEFINE_TRANSPARENT_OPERAND_ACCESSORS(BranchInst, Value)
2216 //===----------------------------------------------------------------------===//
2218 //===----------------------------------------------------------------------===//
2220 //===---------------------------------------------------------------------------
2221 /// SwitchInst - Multiway switch
2223 class SwitchInst : public TerminatorInst {
2224 void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
2225 unsigned ReservedSpace;
2226 // Operand[0] = Value to switch on
2227 // Operand[1] = Default basic block destination
2228 // Operand[2n ] = Value to match
2229 // Operand[2n+1] = BasicBlock to go to on match
2230 SwitchInst(const SwitchInst &RI);
2231 void init(Value *Value, BasicBlock *Default, unsigned NumCases);
2232 void resizeOperands(unsigned No);
2233 // allocate space for exactly zero operands
2234 void *operator new(size_t s) {
2235 return User::operator new(s, 0);
2237 /// SwitchInst ctor - Create a new switch instruction, specifying a value to
2238 /// switch on and a default destination. The number of additional cases can
2239 /// be specified here to make memory allocation more efficient. This
2240 /// constructor can also autoinsert before another instruction.
2241 SwitchInst(Value *Value, BasicBlock *Default, unsigned NumCases,
2242 Instruction *InsertBefore = 0);
2244 /// SwitchInst ctor - Create a new switch instruction, specifying a value to
2245 /// switch on and a default destination. The number of additional cases can
2246 /// be specified here to make memory allocation more efficient. This
2247 /// constructor also autoinserts at the end of the specified BasicBlock.
2248 SwitchInst(Value *Value, BasicBlock *Default, unsigned NumCases,
2249 BasicBlock *InsertAtEnd);
2251 static SwitchInst *Create(Value *Value, BasicBlock *Default,
2252 unsigned NumCases, Instruction *InsertBefore = 0) {
2253 return new SwitchInst(Value, Default, NumCases, InsertBefore);
2255 static SwitchInst *Create(Value *Value, BasicBlock *Default,
2256 unsigned NumCases, BasicBlock *InsertAtEnd) {
2257 return new SwitchInst(Value, Default, NumCases, InsertAtEnd);
2261 /// Provide fast operand accessors
2262 DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
2264 // Accessor Methods for Switch stmt
2265 Value *getCondition() const { return getOperand(0); }
2266 void setCondition(Value *V) { setOperand(0, V); }
2268 BasicBlock *getDefaultDest() const {
2269 return cast<BasicBlock>(getOperand(1));
2272 /// getNumCases - return the number of 'cases' in this switch instruction.
2273 /// Note that case #0 is always the default case.
2274 unsigned getNumCases() const {
2275 return getNumOperands()/2;
2278 /// getCaseValue - Return the specified case value. Note that case #0, the
2279 /// default destination, does not have a case value.
2280 ConstantInt *getCaseValue(unsigned i) {
2281 assert(i && i < getNumCases() && "Illegal case value to get!");
2282 return getSuccessorValue(i);
2285 /// getCaseValue - Return the specified case value. Note that case #0, the
2286 /// default destination, does not have a case value.
2287 const ConstantInt *getCaseValue(unsigned i) const {
2288 assert(i && i < getNumCases() && "Illegal case value to get!");
2289 return getSuccessorValue(i);
2292 /// findCaseValue - Search all of the case values for the specified constant.
2293 /// If it is explicitly handled, return the case number of it, otherwise
2294 /// return 0 to indicate that it is handled by the default handler.
2295 unsigned findCaseValue(const ConstantInt *C) const {
2296 for (unsigned i = 1, e = getNumCases(); i != e; ++i)
2297 if (getCaseValue(i) == C)
2302 /// findCaseDest - Finds the unique case value for a given successor. Returns
2303 /// null if the successor is not found, not unique, or is the default case.
2304 ConstantInt *findCaseDest(BasicBlock *BB) {
2305 if (BB == getDefaultDest()) return NULL;
2307 ConstantInt *CI = NULL;
2308 for (unsigned i = 1, e = getNumCases(); i != e; ++i) {
2309 if (getSuccessor(i) == BB) {
2310 if (CI) return NULL; // Multiple cases lead to BB.
2311 else CI = getCaseValue(i);
2317 /// addCase - Add an entry to the switch instruction...
2319 void addCase(ConstantInt *OnVal, BasicBlock *Dest);
2321 /// removeCase - This method removes the specified successor from the switch
2322 /// instruction. Note that this cannot be used to remove the default
2323 /// destination (successor #0).
2325 void removeCase(unsigned idx);
2327 virtual SwitchInst *clone() const;
2329 unsigned getNumSuccessors() const { return getNumOperands()/2; }
2330 BasicBlock *getSuccessor(unsigned idx) const {
2331 assert(idx < getNumSuccessors() &&"Successor idx out of range for switch!");
2332 return cast<BasicBlock>(getOperand(idx*2+1));
2334 void setSuccessor(unsigned idx, BasicBlock *NewSucc) {
2335 assert(idx < getNumSuccessors() && "Successor # out of range for switch!");
2336 setOperand(idx*2+1, NewSucc);
2339 // getSuccessorValue - Return the value associated with the specified
2341 ConstantInt *getSuccessorValue(unsigned idx) const {
2342 assert(idx < getNumSuccessors() && "Successor # out of range!");
2343 return reinterpret_cast<ConstantInt*>(getOperand(idx*2));
2346 // Methods for support type inquiry through isa, cast, and dyn_cast:
2347 static inline bool classof(const SwitchInst *) { return true; }
2348 static inline bool classof(const Instruction *I) {
2349 return I->getOpcode() == Instruction::Switch;
2351 static inline bool classof(const Value *V) {
2352 return isa<Instruction>(V) && classof(cast<Instruction>(V));
2355 virtual BasicBlock *getSuccessorV(unsigned idx) const;
2356 virtual unsigned getNumSuccessorsV() const;
2357 virtual void setSuccessorV(unsigned idx, BasicBlock *B);
2361 struct OperandTraits<SwitchInst> : HungoffOperandTraits<2> {
2364 DEFINE_TRANSPARENT_OPERAND_ACCESSORS(SwitchInst, Value)
2367 //===----------------------------------------------------------------------===//
2369 //===----------------------------------------------------------------------===//
2371 /// InvokeInst - Invoke instruction. The SubclassData field is used to hold the
2372 /// calling convention of the call.
2374 class InvokeInst : public TerminatorInst {
2375 AttrListPtr AttributeList;
2376 InvokeInst(const InvokeInst &BI);
2377 void init(Value *Fn, BasicBlock *IfNormal, BasicBlock *IfException,
2378 Value* const *Args, unsigned NumArgs);
2380 template<typename InputIterator>
2381 void init(Value *Func, BasicBlock *IfNormal, BasicBlock *IfException,
2382 InputIterator ArgBegin, InputIterator ArgEnd,
2383 const std::string &NameStr,
2384 // This argument ensures that we have an iterator we can
2385 // do arithmetic on in constant time
2386 std::random_access_iterator_tag) {
2387 unsigned NumArgs = (unsigned)std::distance(ArgBegin, ArgEnd);
2389 // This requires that the iterator points to contiguous memory.
2390 init(Func, IfNormal, IfException, NumArgs ? &*ArgBegin : 0, NumArgs);
2394 /// Construct an InvokeInst given a range of arguments.
2395 /// InputIterator must be a random-access iterator pointing to
2396 /// contiguous storage (e.g. a std::vector<>::iterator). Checks are
2397 /// made for random-accessness but not for contiguous storage as
2398 /// that would incur runtime overhead.
2400 /// @brief Construct an InvokeInst from a range of arguments
2401 template<typename InputIterator>
2402 inline InvokeInst(Value *Func, BasicBlock *IfNormal, BasicBlock *IfException,
2403 InputIterator ArgBegin, InputIterator ArgEnd,
2405 const std::string &NameStr, Instruction *InsertBefore);
2407 /// Construct an InvokeInst given a range of arguments.
2408 /// InputIterator must be a random-access iterator pointing to
2409 /// contiguous storage (e.g. a std::vector<>::iterator). Checks are
2410 /// made for random-accessness but not for contiguous storage as
2411 /// that would incur runtime overhead.
2413 /// @brief Construct an InvokeInst from a range of arguments
2414 template<typename InputIterator>
2415 inline InvokeInst(Value *Func, BasicBlock *IfNormal, BasicBlock *IfException,
2416 InputIterator ArgBegin, InputIterator ArgEnd,
2418 const std::string &NameStr, BasicBlock *InsertAtEnd);
2420 template<typename InputIterator>
2421 static InvokeInst *Create(Value *Func,
2422 BasicBlock *IfNormal, BasicBlock *IfException,
2423 InputIterator ArgBegin, InputIterator ArgEnd,
2424 const std::string &NameStr = "",
2425 Instruction *InsertBefore = 0) {
2426 unsigned Values(ArgEnd - ArgBegin + 3);
2427 return new(Values) InvokeInst(Func, IfNormal, IfException, ArgBegin, ArgEnd,
2428 Values, NameStr, InsertBefore);
2430 template<typename InputIterator>
2431 static InvokeInst *Create(Value *Func,
2432 BasicBlock *IfNormal, BasicBlock *IfException,
2433 InputIterator ArgBegin, InputIterator ArgEnd,
2434 const std::string &NameStr,
2435 BasicBlock *InsertAtEnd) {
2436 unsigned Values(ArgEnd - ArgBegin + 3);
2437 return new(Values) InvokeInst(Func, IfNormal, IfException, ArgBegin, ArgEnd,
2438 Values, NameStr, InsertAtEnd);
2441 virtual InvokeInst *clone() const;
2443 /// Provide fast operand accessors
2444 DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
2446 /// getCallingConv/setCallingConv - Get or set the calling convention of this
2448 unsigned getCallingConv() const { return SubclassData; }
2449 void setCallingConv(unsigned CC) {
2453 /// getAttributes - Return the parameter attributes for this invoke.
2455 const AttrListPtr &getAttributes() const { return AttributeList; }
2457 /// setAttributes - Set the parameter attributes for this invoke.
2459 void setAttributes(const AttrListPtr &Attrs) { AttributeList = Attrs; }
2461 /// addAttribute - adds the attribute to the list of attributes.
2462 void addAttribute(unsigned i, Attributes attr);
2464 /// removeAttribute - removes the attribute from the list of attributes.
2465 void removeAttribute(unsigned i, Attributes attr);
2467 /// @brief Determine whether the call or the callee has the given attribute.
2468 bool paramHasAttr(unsigned i, Attributes attr) const;
2470 /// @brief Extract the alignment for a call or parameter (0=unknown).
2471 unsigned getParamAlignment(unsigned i) const {
2472 return AttributeList.getParamAlignment(i);
2475 /// @brief Determine if the call does not access memory.
2476 bool doesNotAccessMemory() const {
2477 return paramHasAttr(0, Attribute::ReadNone);
2479 void setDoesNotAccessMemory(bool NotAccessMemory = true) {
2480 if (NotAccessMemory) addAttribute(~0, Attribute::ReadNone);
2481 else removeAttribute(~0, Attribute::ReadNone);
2484 /// @brief Determine if the call does not access or only reads memory.
2485 bool onlyReadsMemory() const {
2486 return doesNotAccessMemory() || paramHasAttr(~0, Attribute::ReadOnly);
2488 void setOnlyReadsMemory(bool OnlyReadsMemory = true) {
2489 if (OnlyReadsMemory) addAttribute(~0, Attribute::ReadOnly);
2490 else removeAttribute(~0, Attribute::ReadOnly | Attribute::ReadNone);
2493 /// @brief Determine if the call cannot return.
2494 bool doesNotReturn() const {
2495 return paramHasAttr(~0, Attribute::NoReturn);
2497 void setDoesNotReturn(bool DoesNotReturn = true) {
2498 if (DoesNotReturn) addAttribute(~0, Attribute::NoReturn);
2499 else removeAttribute(~0, Attribute::NoReturn);
2502 /// @brief Determine if the call cannot unwind.
2503 bool doesNotThrow() const {
2504 return paramHasAttr(~0, Attribute::NoUnwind);
2506 void setDoesNotThrow(bool DoesNotThrow = true) {
2507 if (DoesNotThrow) addAttribute(~0, Attribute::NoUnwind);
2508 else removeAttribute(~0, Attribute::NoUnwind);
2511 /// @brief Determine if the call returns a structure through first
2512 /// pointer argument.
2513 bool hasStructRetAttr() const {
2514 // Be friendly and also check the callee.
2515 return paramHasAttr(1, Attribute::StructRet);
2518 /// @brief Determine if any call argument is an aggregate passed by value.
2519 bool hasByValArgument() const {
2520 return AttributeList.hasAttrSomewhere(Attribute::ByVal);
2523 /// getCalledFunction - Return the function called, or null if this is an
2524 /// indirect function invocation.
2526 Function *getCalledFunction() const {
2527 return dyn_cast<Function>(getOperand(0));
2530 /// getCalledValue - Get a pointer to the function that is invoked by this
2532 const Value *getCalledValue() const { return getOperand(0); }
2533 Value *getCalledValue() { return getOperand(0); }
2535 // get*Dest - Return the destination basic blocks...
2536 BasicBlock *getNormalDest() const {
2537 return cast<BasicBlock>(getOperand(1));
2539 BasicBlock *getUnwindDest() const {
2540 return cast<BasicBlock>(getOperand(2));
2542 void setNormalDest(BasicBlock *B) {
2546 void setUnwindDest(BasicBlock *B) {
2550 BasicBlock *getSuccessor(unsigned i) const {
2551 assert(i < 2 && "Successor # out of range for invoke!");
2552 return i == 0 ? getNormalDest() : getUnwindDest();
2555 void setSuccessor(unsigned idx, BasicBlock *NewSucc) {
2556 assert(idx < 2 && "Successor # out of range for invoke!");
2557 setOperand(idx+1, NewSucc);
2560 unsigned getNumSuccessors() const { return 2; }
2562 // Methods for support type inquiry through isa, cast, and dyn_cast:
2563 static inline bool classof(const InvokeInst *) { return true; }
2564 static inline bool classof(const Instruction *I) {
2565 return (I->getOpcode() == Instruction::Invoke);
2567 static inline bool classof(const Value *V) {
2568 return isa<Instruction>(V) && classof(cast<Instruction>(V));
2571 virtual BasicBlock *getSuccessorV(unsigned idx) const;
2572 virtual unsigned getNumSuccessorsV() const;
2573 virtual void setSuccessorV(unsigned idx, BasicBlock *B);
2577 struct OperandTraits<InvokeInst> : VariadicOperandTraits<3> {
2580 template<typename InputIterator>
2581 InvokeInst::InvokeInst(Value *Func,
2582 BasicBlock *IfNormal, BasicBlock *IfException,
2583 InputIterator ArgBegin, InputIterator ArgEnd,
2585 const std::string &NameStr, Instruction *InsertBefore)
2586 : TerminatorInst(cast<FunctionType>(cast<PointerType>(Func->getType())
2587 ->getElementType())->getReturnType(),
2588 Instruction::Invoke,
2589 OperandTraits<InvokeInst>::op_end(this) - Values,
2590 Values, InsertBefore) {
2591 init(Func, IfNormal, IfException, ArgBegin, ArgEnd, NameStr,
2592 typename std::iterator_traits<InputIterator>::iterator_category());
2594 template<typename InputIterator>
2595 InvokeInst::InvokeInst(Value *Func,
2596 BasicBlock *IfNormal, BasicBlock *IfException,
2597 InputIterator ArgBegin, InputIterator ArgEnd,
2599 const std::string &NameStr, BasicBlock *InsertAtEnd)
2600 : TerminatorInst(cast<FunctionType>(cast<PointerType>(Func->getType())
2601 ->getElementType())->getReturnType(),
2602 Instruction::Invoke,
2603 OperandTraits<InvokeInst>::op_end(this) - Values,
2604 Values, InsertAtEnd) {
2605 init(Func, IfNormal, IfException, ArgBegin, ArgEnd, NameStr,
2606 typename std::iterator_traits<InputIterator>::iterator_category());
2609 DEFINE_TRANSPARENT_OPERAND_ACCESSORS(InvokeInst, Value)
2611 //===----------------------------------------------------------------------===//
2613 //===----------------------------------------------------------------------===//
2615 //===---------------------------------------------------------------------------
2616 /// UnwindInst - Immediately exit the current function, unwinding the stack
2617 /// until an invoke instruction is found.
2619 class UnwindInst : public TerminatorInst {
2620 void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
2622 // allocate space for exactly zero operands
2623 void *operator new(size_t s) {
2624 return User::operator new(s, 0);
2626 explicit UnwindInst(Instruction *InsertBefore = 0);
2627 explicit UnwindInst(BasicBlock *InsertAtEnd);
2629 virtual UnwindInst *clone() const;
2631 unsigned getNumSuccessors() const { return 0; }
2633 // Methods for support type inquiry through isa, cast, and dyn_cast:
2634 static inline bool classof(const UnwindInst *) { return true; }
2635 static inline bool classof(const Instruction *I) {
2636 return I->getOpcode() == Instruction::Unwind;
2638 static inline bool classof(const Value *V) {
2639 return isa<Instruction>(V) && classof(cast<Instruction>(V));
2642 virtual BasicBlock *getSuccessorV(unsigned idx) const;
2643 virtual unsigned getNumSuccessorsV() const;
2644 virtual void setSuccessorV(unsigned idx, BasicBlock *B);
2647 //===----------------------------------------------------------------------===//
2648 // UnreachableInst Class
2649 //===----------------------------------------------------------------------===//
2651 //===---------------------------------------------------------------------------
2652 /// UnreachableInst - This function has undefined behavior. In particular, the
2653 /// presence of this instruction indicates some higher level knowledge that the
2654 /// end of the block cannot be reached.
2656 class UnreachableInst : public TerminatorInst {
2657 void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
2659 // allocate space for exactly zero operands
2660 void *operator new(size_t s) {
2661 return User::operator new(s, 0);
2663 explicit UnreachableInst(Instruction *InsertBefore = 0);
2664 explicit UnreachableInst(BasicBlock *InsertAtEnd);
2666 virtual UnreachableInst *clone() const;
2668 unsigned getNumSuccessors() const { return 0; }
2670 // Methods for support type inquiry through isa, cast, and dyn_cast:
2671 static inline bool classof(const UnreachableInst *) { return true; }
2672 static inline bool classof(const Instruction *I) {
2673 return I->getOpcode() == Instruction::Unreachable;
2675 static inline bool classof(const Value *V) {
2676 return isa<Instruction>(V) && classof(cast<Instruction>(V));
2679 virtual BasicBlock *getSuccessorV(unsigned idx) const;
2680 virtual unsigned getNumSuccessorsV() const;
2681 virtual void setSuccessorV(unsigned idx, BasicBlock *B);
2684 //===----------------------------------------------------------------------===//
2686 //===----------------------------------------------------------------------===//
2688 /// @brief This class represents a truncation of integer types.
2689 class TruncInst : public CastInst {
2690 /// Private copy constructor
2691 TruncInst(const TruncInst &CI)
2692 : CastInst(CI.getType(), Trunc, CI.getOperand(0)) {
2695 /// @brief Constructor with insert-before-instruction semantics
2697 Value *S, ///< The value to be truncated
2698 const Type *Ty, ///< The (smaller) type to truncate to
2699 const std::string &NameStr = "", ///< A name for the new instruction
2700 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
2703 /// @brief Constructor with insert-at-end-of-block semantics
2705 Value *S, ///< The value to be truncated
2706 const Type *Ty, ///< The (smaller) type to truncate to
2707 const std::string &NameStr, ///< A name for the new instruction
2708 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
2711 /// @brief Clone an identical TruncInst
2712 virtual CastInst *clone() const;
2714 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
2715 static inline bool classof(const TruncInst *) { return true; }
2716 static inline bool classof(const Instruction *I) {
2717 return I->getOpcode() == Trunc;
2719 static inline bool classof(const Value *V) {
2720 return isa<Instruction>(V) && classof(cast<Instruction>(V));
2724 //===----------------------------------------------------------------------===//
2726 //===----------------------------------------------------------------------===//
2728 /// @brief This class represents zero extension of integer types.
2729 class ZExtInst : public CastInst {
2730 /// @brief Private copy constructor
2731 ZExtInst(const ZExtInst &CI)
2732 : CastInst(CI.getType(), ZExt, CI.getOperand(0)) {
2735 /// @brief Constructor with insert-before-instruction semantics
2737 Value *S, ///< The value to be zero extended
2738 const Type *Ty, ///< The type to zero extend to
2739 const std::string &NameStr = "", ///< A name for the new instruction
2740 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
2743 /// @brief Constructor with insert-at-end semantics.
2745 Value *S, ///< The value to be zero extended
2746 const Type *Ty, ///< The type to zero extend to
2747 const std::string &NameStr, ///< A name for the new instruction
2748 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
2751 /// @brief Clone an identical ZExtInst
2752 virtual CastInst *clone() const;
2754 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
2755 static inline bool classof(const ZExtInst *) { return true; }
2756 static inline bool classof(const Instruction *I) {
2757 return I->getOpcode() == ZExt;
2759 static inline bool classof(const Value *V) {
2760 return isa<Instruction>(V) && classof(cast<Instruction>(V));
2764 //===----------------------------------------------------------------------===//
2766 //===----------------------------------------------------------------------===//
2768 /// @brief This class represents a sign extension of integer types.
2769 class SExtInst : public CastInst {
2770 /// @brief Private copy constructor
2771 SExtInst(const SExtInst &CI)
2772 : CastInst(CI.getType(), SExt, CI.getOperand(0)) {
2775 /// @brief Constructor with insert-before-instruction semantics
2777 Value *S, ///< The value to be sign extended
2778 const Type *Ty, ///< The type to sign extend to
2779 const std::string &NameStr = "", ///< A name for the new instruction
2780 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
2783 /// @brief Constructor with insert-at-end-of-block semantics
2785 Value *S, ///< The value to be sign extended
2786 const Type *Ty, ///< The type to sign extend to
2787 const std::string &NameStr, ///< A name for the new instruction
2788 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
2791 /// @brief Clone an identical SExtInst
2792 virtual CastInst *clone() const;
2794 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
2795 static inline bool classof(const SExtInst *) { return true; }
2796 static inline bool classof(const Instruction *I) {
2797 return I->getOpcode() == SExt;
2799 static inline bool classof(const Value *V) {
2800 return isa<Instruction>(V) && classof(cast<Instruction>(V));
2804 //===----------------------------------------------------------------------===//
2805 // FPTruncInst Class
2806 //===----------------------------------------------------------------------===//
2808 /// @brief This class represents a truncation of floating point types.
2809 class FPTruncInst : public CastInst {
2810 FPTruncInst(const FPTruncInst &CI)
2811 : CastInst(CI.getType(), FPTrunc, CI.getOperand(0)) {
2814 /// @brief Constructor with insert-before-instruction semantics
2816 Value *S, ///< The value to be truncated
2817 const Type *Ty, ///< The type to truncate to
2818 const std::string &NameStr = "", ///< A name for the new instruction
2819 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
2822 /// @brief Constructor with insert-before-instruction semantics
2824 Value *S, ///< The value to be truncated
2825 const Type *Ty, ///< The type to truncate to
2826 const std::string &NameStr, ///< A name for the new instruction
2827 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
2830 /// @brief Clone an identical FPTruncInst
2831 virtual CastInst *clone() const;
2833 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
2834 static inline bool classof(const FPTruncInst *) { return true; }
2835 static inline bool classof(const Instruction *I) {
2836 return I->getOpcode() == FPTrunc;
2838 static inline bool classof(const Value *V) {
2839 return isa<Instruction>(V) && classof(cast<Instruction>(V));
2843 //===----------------------------------------------------------------------===//
2845 //===----------------------------------------------------------------------===//
2847 /// @brief This class represents an extension of floating point types.
2848 class FPExtInst : public CastInst {
2849 FPExtInst(const FPExtInst &CI)
2850 : CastInst(CI.getType(), FPExt, CI.getOperand(0)) {
2853 /// @brief Constructor with insert-before-instruction semantics
2855 Value *S, ///< The value to be extended
2856 const Type *Ty, ///< The type to extend to
2857 const std::string &NameStr = "", ///< A name for the new instruction
2858 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
2861 /// @brief Constructor with insert-at-end-of-block semantics
2863 Value *S, ///< The value to be extended
2864 const Type *Ty, ///< The type to extend to
2865 const std::string &NameStr, ///< A name for the new instruction
2866 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
2869 /// @brief Clone an identical FPExtInst
2870 virtual CastInst *clone() const;
2872 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
2873 static inline bool classof(const FPExtInst *) { return true; }
2874 static inline bool classof(const Instruction *I) {
2875 return I->getOpcode() == FPExt;
2877 static inline bool classof(const Value *V) {
2878 return isa<Instruction>(V) && classof(cast<Instruction>(V));
2882 //===----------------------------------------------------------------------===//
2884 //===----------------------------------------------------------------------===//
2886 /// @brief This class represents a cast unsigned integer to floating point.
2887 class UIToFPInst : public CastInst {
2888 UIToFPInst(const UIToFPInst &CI)
2889 : CastInst(CI.getType(), UIToFP, CI.getOperand(0)) {
2892 /// @brief Constructor with insert-before-instruction semantics
2894 Value *S, ///< The value to be converted
2895 const Type *Ty, ///< The type to convert to
2896 const std::string &NameStr = "", ///< A name for the new instruction
2897 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
2900 /// @brief Constructor with insert-at-end-of-block semantics
2902 Value *S, ///< The value to be converted
2903 const Type *Ty, ///< The type to convert to
2904 const std::string &NameStr, ///< A name for the new instruction
2905 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
2908 /// @brief Clone an identical UIToFPInst
2909 virtual CastInst *clone() const;
2911 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
2912 static inline bool classof(const UIToFPInst *) { return true; }
2913 static inline bool classof(const Instruction *I) {
2914 return I->getOpcode() == UIToFP;
2916 static inline bool classof(const Value *V) {
2917 return isa<Instruction>(V) && classof(cast<Instruction>(V));
2921 //===----------------------------------------------------------------------===//
2923 //===----------------------------------------------------------------------===//
2925 /// @brief This class represents a cast from signed integer to floating point.
2926 class SIToFPInst : public CastInst {
2927 SIToFPInst(const SIToFPInst &CI)
2928 : CastInst(CI.getType(), SIToFP, CI.getOperand(0)) {
2931 /// @brief Constructor with insert-before-instruction semantics
2933 Value *S, ///< The value to be converted
2934 const Type *Ty, ///< The type to convert to
2935 const std::string &NameStr = "", ///< A name for the new instruction
2936 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
2939 /// @brief Constructor with insert-at-end-of-block semantics
2941 Value *S, ///< The value to be converted
2942 const Type *Ty, ///< The type to convert to
2943 const std::string &NameStr, ///< A name for the new instruction
2944 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
2947 /// @brief Clone an identical SIToFPInst
2948 virtual CastInst *clone() const;
2950 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
2951 static inline bool classof(const SIToFPInst *) { return true; }
2952 static inline bool classof(const Instruction *I) {
2953 return I->getOpcode() == SIToFP;
2955 static inline bool classof(const Value *V) {
2956 return isa<Instruction>(V) && classof(cast<Instruction>(V));
2960 //===----------------------------------------------------------------------===//
2962 //===----------------------------------------------------------------------===//
2964 /// @brief This class represents a cast from floating point to unsigned integer
2965 class FPToUIInst : public CastInst {
2966 FPToUIInst(const FPToUIInst &CI)
2967 : CastInst(CI.getType(), FPToUI, CI.getOperand(0)) {
2970 /// @brief Constructor with insert-before-instruction semantics
2972 Value *S, ///< The value to be converted
2973 const Type *Ty, ///< The type to convert to
2974 const std::string &NameStr = "", ///< A name for the new instruction
2975 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
2978 /// @brief Constructor with insert-at-end-of-block semantics
2980 Value *S, ///< The value to be converted
2981 const Type *Ty, ///< The type to convert to
2982 const std::string &NameStr, ///< A name for the new instruction
2983 BasicBlock *InsertAtEnd ///< Where to insert the new instruction
2986 /// @brief Clone an identical FPToUIInst
2987 virtual CastInst *clone() const;
2989 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
2990 static inline bool classof(const FPToUIInst *) { return true; }
2991 static inline bool classof(const Instruction *I) {
2992 return I->getOpcode() == FPToUI;
2994 static inline bool classof(const Value *V) {
2995 return isa<Instruction>(V) && classof(cast<Instruction>(V));
2999 //===----------------------------------------------------------------------===//
3001 //===----------------------------------------------------------------------===//
3003 /// @brief This class represents a cast from floating point to signed integer.
3004 class FPToSIInst : public CastInst {
3005 FPToSIInst(const FPToSIInst &CI)
3006 : CastInst(CI.getType(), FPToSI, CI.getOperand(0)) {
3009 /// @brief Constructor with insert-before-instruction semantics
3011 Value *S, ///< The value to be converted
3012 const Type *Ty, ///< The type to convert to
3013 const std::string &NameStr = "", ///< A name for the new instruction
3014 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
3017 /// @brief Constructor with insert-at-end-of-block semantics
3019 Value *S, ///< The value to be converted
3020 const Type *Ty, ///< The type to convert to
3021 const std::string &NameStr, ///< A name for the new instruction
3022 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
3025 /// @brief Clone an identical FPToSIInst
3026 virtual CastInst *clone() const;
3028 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
3029 static inline bool classof(const FPToSIInst *) { return true; }
3030 static inline bool classof(const Instruction *I) {
3031 return I->getOpcode() == FPToSI;
3033 static inline bool classof(const Value *V) {
3034 return isa<Instruction>(V) && classof(cast<Instruction>(V));
3038 //===----------------------------------------------------------------------===//
3039 // IntToPtrInst Class
3040 //===----------------------------------------------------------------------===//
3042 /// @brief This class represents a cast from an integer to a pointer.
3043 class IntToPtrInst : public CastInst {
3044 IntToPtrInst(const IntToPtrInst &CI)
3045 : CastInst(CI.getType(), IntToPtr, CI.getOperand(0)) {
3048 /// @brief Constructor with insert-before-instruction semantics
3050 Value *S, ///< The value to be converted
3051 const Type *Ty, ///< The type to convert to
3052 const std::string &NameStr = "", ///< A name for the new instruction
3053 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
3056 /// @brief Constructor with insert-at-end-of-block semantics
3058 Value *S, ///< The value to be converted
3059 const Type *Ty, ///< The type to convert to
3060 const std::string &NameStr, ///< A name for the new instruction
3061 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
3064 /// @brief Clone an identical IntToPtrInst
3065 virtual CastInst *clone() const;
3067 // Methods for support type inquiry through isa, cast, and dyn_cast:
3068 static inline bool classof(const IntToPtrInst *) { return true; }
3069 static inline bool classof(const Instruction *I) {
3070 return I->getOpcode() == IntToPtr;
3072 static inline bool classof(const Value *V) {
3073 return isa<Instruction>(V) && classof(cast<Instruction>(V));
3077 //===----------------------------------------------------------------------===//
3078 // PtrToIntInst Class
3079 //===----------------------------------------------------------------------===//
3081 /// @brief This class represents a cast from a pointer to an integer
3082 class PtrToIntInst : public CastInst {
3083 PtrToIntInst(const PtrToIntInst &CI)
3084 : CastInst(CI.getType(), PtrToInt, CI.getOperand(0)) {
3087 /// @brief Constructor with insert-before-instruction semantics
3089 Value *S, ///< The value to be converted
3090 const Type *Ty, ///< The type to convert to
3091 const std::string &NameStr = "", ///< A name for the new instruction
3092 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
3095 /// @brief Constructor with insert-at-end-of-block semantics
3097 Value *S, ///< The value to be converted
3098 const Type *Ty, ///< The type to convert to
3099 const std::string &NameStr, ///< A name for the new instruction
3100 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
3103 /// @brief Clone an identical PtrToIntInst
3104 virtual CastInst *clone() const;
3106 // Methods for support type inquiry through isa, cast, and dyn_cast:
3107 static inline bool classof(const PtrToIntInst *) { return true; }
3108 static inline bool classof(const Instruction *I) {
3109 return I->getOpcode() == PtrToInt;
3111 static inline bool classof(const Value *V) {
3112 return isa<Instruction>(V) && classof(cast<Instruction>(V));
3116 //===----------------------------------------------------------------------===//
3117 // BitCastInst Class
3118 //===----------------------------------------------------------------------===//
3120 /// @brief This class represents a no-op cast from one type to another.
3121 class BitCastInst : public CastInst {
3122 BitCastInst(const BitCastInst &CI)
3123 : CastInst(CI.getType(), BitCast, CI.getOperand(0)) {
3126 /// @brief Constructor with insert-before-instruction semantics
3128 Value *S, ///< The value to be casted
3129 const Type *Ty, ///< The type to casted to
3130 const std::string &NameStr = "", ///< A name for the new instruction
3131 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
3134 /// @brief Constructor with insert-at-end-of-block semantics
3136 Value *S, ///< The value to be casted
3137 const Type *Ty, ///< The type to casted to
3138 const std::string &NameStr, ///< A name for the new instruction
3139 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
3142 /// @brief Clone an identical BitCastInst
3143 virtual CastInst *clone() const;
3145 // Methods for support type inquiry through isa, cast, and dyn_cast:
3146 static inline bool classof(const BitCastInst *) { return true; }
3147 static inline bool classof(const Instruction *I) {
3148 return I->getOpcode() == BitCast;
3150 static inline bool classof(const Value *V) {
3151 return isa<Instruction>(V) && classof(cast<Instruction>(V));
3155 } // End llvm namespace