1 //===-- llvm/Instructions.h - Instruction subclass definitions --*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file exposes the class definitions of all of the subclasses of the
11 // Instruction class. This is meant to be an easy way to get access to all
12 // instruction subclasses.
14 //===----------------------------------------------------------------------===//
16 #ifndef LLVM_INSTRUCTIONS_H
17 #define LLVM_INSTRUCTIONS_H
19 #include "llvm/InstrTypes.h"
31 //===----------------------------------------------------------------------===//
32 // AllocationInst Class
33 //===----------------------------------------------------------------------===//
35 /// AllocationInst - This class is the common base class of MallocInst and
38 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 inline const Value *getArraySize() const { return getOperand(0); }
58 inline Value *getArraySize() { return getOperand(0); }
60 /// getType - Overload to return most specific pointer type
62 inline 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 Alignment; }
75 void setAlignment(unsigned Align) {
76 assert((Align & (Align-1)) == 0 && "Alignment is not a power of 2!");
80 virtual Instruction *clone() const = 0;
82 // Methods for support type inquiry through isa, cast, and dyn_cast:
83 static inline bool classof(const AllocationInst *) { return true; }
84 static inline bool classof(const Instruction *I) {
85 return I->getOpcode() == Instruction::Alloca ||
86 I->getOpcode() == Instruction::Malloc;
88 static inline bool classof(const Value *V) {
89 return isa<Instruction>(V) && classof(cast<Instruction>(V));
94 //===----------------------------------------------------------------------===//
96 //===----------------------------------------------------------------------===//
98 /// MallocInst - an instruction to allocated memory on the heap
100 class MallocInst : public AllocationInst {
101 MallocInst(const MallocInst &MI);
103 explicit MallocInst(const Type *Ty, Value *ArraySize = 0,
104 const std::string &Name = "",
105 Instruction *InsertBefore = 0)
106 : AllocationInst(Ty, ArraySize, Malloc, 0, Name, InsertBefore) {}
107 MallocInst(const Type *Ty, Value *ArraySize, const std::string &Name,
108 BasicBlock *InsertAtEnd)
109 : AllocationInst(Ty, ArraySize, Malloc, 0, Name, InsertAtEnd) {}
111 MallocInst(const Type *Ty, const std::string &Name,
112 Instruction *InsertBefore = 0)
113 : AllocationInst(Ty, 0, Malloc, 0, Name, InsertBefore) {}
114 MallocInst(const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd)
115 : AllocationInst(Ty, 0, Malloc, 0, Name, InsertAtEnd) {}
117 MallocInst(const Type *Ty, Value *ArraySize, unsigned Align,
118 const std::string &Name, BasicBlock *InsertAtEnd)
119 : AllocationInst(Ty, ArraySize, Malloc, Align, Name, InsertAtEnd) {}
120 MallocInst(const Type *Ty, Value *ArraySize, unsigned Align,
121 const std::string &Name = "",
122 Instruction *InsertBefore = 0)
123 : AllocationInst(Ty, ArraySize, Malloc, Align, Name, InsertBefore) {}
125 virtual MallocInst *clone() const;
127 // Methods for support type inquiry through isa, cast, and dyn_cast:
128 static inline bool classof(const MallocInst *) { return true; }
129 static inline bool classof(const Instruction *I) {
130 return (I->getOpcode() == Instruction::Malloc);
132 static inline bool classof(const Value *V) {
133 return isa<Instruction>(V) && classof(cast<Instruction>(V));
138 //===----------------------------------------------------------------------===//
140 //===----------------------------------------------------------------------===//
142 /// AllocaInst - an instruction to allocate memory on the stack
144 class AllocaInst : public AllocationInst {
145 AllocaInst(const AllocaInst &);
147 explicit AllocaInst(const Type *Ty, Value *ArraySize = 0,
148 const std::string &Name = "",
149 Instruction *InsertBefore = 0)
150 : AllocationInst(Ty, ArraySize, Alloca, 0, Name, InsertBefore) {}
151 AllocaInst(const Type *Ty, Value *ArraySize, const std::string &Name,
152 BasicBlock *InsertAtEnd)
153 : AllocationInst(Ty, ArraySize, Alloca, 0, Name, InsertAtEnd) {}
155 AllocaInst(const Type *Ty, const std::string &Name,
156 Instruction *InsertBefore = 0)
157 : AllocationInst(Ty, 0, Alloca, 0, Name, InsertBefore) {}
158 AllocaInst(const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd)
159 : AllocationInst(Ty, 0, Alloca, 0, Name, InsertAtEnd) {}
161 AllocaInst(const Type *Ty, Value *ArraySize, unsigned Align,
162 const std::string &Name = "", Instruction *InsertBefore = 0)
163 : AllocationInst(Ty, ArraySize, Alloca, Align, Name, InsertBefore) {}
164 AllocaInst(const Type *Ty, Value *ArraySize, unsigned Align,
165 const std::string &Name, BasicBlock *InsertAtEnd)
166 : AllocationInst(Ty, ArraySize, Alloca, Align, Name, InsertAtEnd) {}
168 virtual AllocaInst *clone() const;
170 // Methods for support type inquiry through isa, cast, and dyn_cast:
171 static inline bool classof(const AllocaInst *) { return true; }
172 static inline bool classof(const Instruction *I) {
173 return (I->getOpcode() == Instruction::Alloca);
175 static inline bool classof(const Value *V) {
176 return isa<Instruction>(V) && classof(cast<Instruction>(V));
181 //===----------------------------------------------------------------------===//
183 //===----------------------------------------------------------------------===//
185 /// FreeInst - an instruction to deallocate memory
187 class FreeInst : public UnaryInstruction {
190 explicit FreeInst(Value *Ptr, Instruction *InsertBefore = 0);
191 FreeInst(Value *Ptr, BasicBlock *InsertAfter);
193 virtual FreeInst *clone() const;
195 // Accessor methods for consistency with other memory operations
196 Value *getPointerOperand() { return getOperand(0); }
197 const Value *getPointerOperand() const { return getOperand(0); }
199 // Methods for support type inquiry through isa, cast, and dyn_cast:
200 static inline bool classof(const FreeInst *) { return true; }
201 static inline bool classof(const Instruction *I) {
202 return (I->getOpcode() == Instruction::Free);
204 static inline bool classof(const Value *V) {
205 return isa<Instruction>(V) && classof(cast<Instruction>(V));
210 //===----------------------------------------------------------------------===//
212 //===----------------------------------------------------------------------===//
214 /// LoadInst - an instruction for reading from memory. This uses the
215 /// SubclassData field in Value to store whether or not the load is volatile.
217 class LoadInst : public UnaryInstruction {
219 LoadInst(const LoadInst &LI)
220 : UnaryInstruction(LI.getType(), Load, LI.getOperand(0)) {
221 setVolatile(LI.isVolatile());
222 setAlignment(LI.getAlignment());
230 LoadInst(Value *Ptr, const std::string &Name, Instruction *InsertBefore);
231 LoadInst(Value *Ptr, const std::string &Name, BasicBlock *InsertAtEnd);
232 LoadInst(Value *Ptr, const std::string &Name, bool isVolatile = false,
233 Instruction *InsertBefore = 0);
234 LoadInst(Value *Ptr, const std::string &Name, bool isVolatile, unsigned Align,
235 Instruction *InsertBefore = 0);
236 LoadInst(Value *Ptr, const std::string &Name, bool isVolatile,
237 BasicBlock *InsertAtEnd);
239 LoadInst(Value *Ptr, const char *Name, Instruction *InsertBefore);
240 LoadInst(Value *Ptr, const char *Name, BasicBlock *InsertAtEnd);
241 explicit LoadInst(Value *Ptr, const char *Name = 0, bool isVolatile = false,
242 Instruction *InsertBefore = 0);
243 LoadInst(Value *Ptr, const char *Name, bool isVolatile,
244 BasicBlock *InsertAtEnd);
246 /// isVolatile - Return true if this is a load from a volatile memory
249 bool isVolatile() const { return SubclassData & 1; }
251 /// setVolatile - Specify whether this is a volatile load or not.
253 void setVolatile(bool V) {
254 SubclassData = (SubclassData & ~1) | ((V) ? 1 : 0);
257 virtual LoadInst *clone() const;
259 /// getAlignment - Return the alignment of the access that is being performed
261 unsigned getAlignment() const {
262 return (1 << (SubclassData>>1)) >> 1;
265 void setAlignment(unsigned Align);
267 Value *getPointerOperand() { return getOperand(0); }
268 const Value *getPointerOperand() const { return getOperand(0); }
269 static unsigned getPointerOperandIndex() { return 0U; }
271 // Methods for support type inquiry through isa, cast, and dyn_cast:
272 static inline bool classof(const LoadInst *) { return true; }
273 static inline bool classof(const Instruction *I) {
274 return I->getOpcode() == Instruction::Load;
276 static inline bool classof(const Value *V) {
277 return isa<Instruction>(V) && classof(cast<Instruction>(V));
282 //===----------------------------------------------------------------------===//
284 //===----------------------------------------------------------------------===//
286 /// StoreInst - an instruction for storing to memory
288 class StoreInst : public Instruction {
291 StoreInst(const StoreInst &SI) : Instruction(SI.getType(), Store, Ops, 2) {
292 Ops[0].init(SI.Ops[0], this);
293 Ops[1].init(SI.Ops[1], this);
294 setVolatile(SI.isVolatile());
295 setAlignment(SI.getAlignment());
303 StoreInst(Value *Val, Value *Ptr, Instruction *InsertBefore);
304 StoreInst(Value *Val, Value *Ptr, BasicBlock *InsertAtEnd);
305 StoreInst(Value *Val, Value *Ptr, bool isVolatile = false,
306 Instruction *InsertBefore = 0);
307 StoreInst(Value *Val, Value *Ptr, bool isVolatile,
308 unsigned Align, Instruction *InsertBefore = 0);
309 StoreInst(Value *Val, Value *Ptr, bool isVolatile, BasicBlock *InsertAtEnd);
312 /// isVolatile - Return true if this is a load from a volatile memory
315 bool isVolatile() const { return SubclassData & 1; }
317 /// setVolatile - Specify whether this is a volatile load or not.
319 void setVolatile(bool V) {
320 SubclassData = (SubclassData & ~1) | ((V) ? 1 : 0);
323 /// Transparently provide more efficient getOperand methods.
324 Value *getOperand(unsigned i) const {
325 assert(i < 2 && "getOperand() out of range!");
328 void setOperand(unsigned i, Value *Val) {
329 assert(i < 2 && "setOperand() out of range!");
332 unsigned getNumOperands() const { return 2; }
334 /// getAlignment - Return the alignment of the access that is being performed
336 unsigned getAlignment() const {
337 return (1 << (SubclassData>>1)) >> 1;
340 void setAlignment(unsigned Align);
342 virtual StoreInst *clone() const;
344 Value *getPointerOperand() { return getOperand(1); }
345 const Value *getPointerOperand() const { return getOperand(1); }
346 static unsigned getPointerOperandIndex() { return 1U; }
348 // Methods for support type inquiry through isa, cast, and dyn_cast:
349 static inline bool classof(const StoreInst *) { return true; }
350 static inline bool classof(const Instruction *I) {
351 return I->getOpcode() == Instruction::Store;
353 static inline bool classof(const Value *V) {
354 return isa<Instruction>(V) && classof(cast<Instruction>(V));
359 //===----------------------------------------------------------------------===//
360 // GetElementPtrInst Class
361 //===----------------------------------------------------------------------===//
363 /// GetElementPtrInst - an instruction for type-safe pointer arithmetic to
364 /// access elements of arrays and structs
366 class GetElementPtrInst : public Instruction {
367 GetElementPtrInst(const GetElementPtrInst &GEPI)
368 : Instruction(reinterpret_cast<const Type*>(GEPI.getType()), GetElementPtr,
369 0, GEPI.getNumOperands()) {
370 Use *OL = OperandList = new Use[NumOperands];
371 Use *GEPIOL = GEPI.OperandList;
372 for (unsigned i = 0, E = NumOperands; i != E; ++i)
373 OL[i].init(GEPIOL[i], this);
375 void init(Value *Ptr, Value* const *Idx, unsigned NumIdx);
376 void init(Value *Ptr, Value *Idx0, Value *Idx1);
377 void init(Value *Ptr, Value *Idx);
379 /// Constructors - Create a getelementptr instruction with a base pointer an
380 /// list of indices. The first ctor can optionally insert before an existing
381 /// instruction, the second appends the new instruction to the specified
383 GetElementPtrInst(Value *Ptr, Value* const *Idx, unsigned NumIdx,
384 const std::string &Name = "", Instruction *InsertBefore =0);
385 GetElementPtrInst(Value *Ptr, Value* const *Idx, unsigned NumIdx,
386 const std::string &Name, BasicBlock *InsertAtEnd);
388 /// Constructors - These two constructors are convenience methods because one
389 /// and two index getelementptr instructions are so common.
390 GetElementPtrInst(Value *Ptr, Value *Idx,
391 const std::string &Name = "", Instruction *InsertBefore =0);
392 GetElementPtrInst(Value *Ptr, Value *Idx,
393 const std::string &Name, BasicBlock *InsertAtEnd);
394 GetElementPtrInst(Value *Ptr, Value *Idx0, Value *Idx1,
395 const std::string &Name = "", Instruction *InsertBefore =0);
396 GetElementPtrInst(Value *Ptr, Value *Idx0, Value *Idx1,
397 const std::string &Name, BasicBlock *InsertAtEnd);
398 ~GetElementPtrInst();
400 virtual GetElementPtrInst *clone() const;
402 // getType - Overload to return most specific pointer type...
403 inline const PointerType *getType() const {
404 return reinterpret_cast<const PointerType*>(Instruction::getType());
407 /// getIndexedType - Returns the type of the element that would be loaded with
408 /// a load instruction with the specified parameters.
410 /// A null type is returned if the indices are invalid for the specified
413 static const Type *getIndexedType(const Type *Ptr,
414 Value* const *Idx, unsigned NumIdx,
415 bool AllowStructLeaf = false);
417 static const Type *getIndexedType(const Type *Ptr, Value *Idx0, Value *Idx1,
418 bool AllowStructLeaf = false);
419 static const Type *getIndexedType(const Type *Ptr, Value *Idx);
421 inline op_iterator idx_begin() { return op_begin()+1; }
422 inline const_op_iterator idx_begin() const { return op_begin()+1; }
423 inline op_iterator idx_end() { return op_end(); }
424 inline const_op_iterator idx_end() const { return op_end(); }
426 Value *getPointerOperand() {
427 return getOperand(0);
429 const Value *getPointerOperand() const {
430 return getOperand(0);
432 static unsigned getPointerOperandIndex() {
433 return 0U; // get index for modifying correct operand
436 inline unsigned getNumIndices() const { // Note: always non-negative
437 return getNumOperands() - 1;
440 inline bool hasIndices() const {
441 return getNumOperands() > 1;
444 /// hasAllZeroIndices - Return true if all of the indices of this GEP are
445 /// zeros. If so, the result pointer and the first operand have the same
446 /// value, just potentially different types.
447 bool hasAllZeroIndices() const;
449 /// hasAllConstantIndices - Return true if all of the indices of this GEP are
450 /// constant integers. If so, the result pointer and the first operand have
451 /// a constant offset between them.
452 bool hasAllConstantIndices() const;
455 // Methods for support type inquiry through isa, cast, and dyn_cast:
456 static inline bool classof(const GetElementPtrInst *) { return true; }
457 static inline bool classof(const Instruction *I) {
458 return (I->getOpcode() == Instruction::GetElementPtr);
460 static inline bool classof(const Value *V) {
461 return isa<Instruction>(V) && classof(cast<Instruction>(V));
465 //===----------------------------------------------------------------------===//
467 //===----------------------------------------------------------------------===//
469 /// This instruction compares its operands according to the predicate given
470 /// to the constructor. It only operates on integers, pointers, or packed
471 /// vectors of integrals. The two operands must be the same type.
472 /// @brief Represent an integer comparison operator.
473 class ICmpInst: public CmpInst {
475 /// This enumeration lists the possible predicates for the ICmpInst. The
476 /// values in the range 0-31 are reserved for FCmpInst while values in the
477 /// range 32-64 are reserved for ICmpInst. This is necessary to ensure the
478 /// predicate values are not overlapping between the classes.
480 ICMP_EQ = 32, ///< equal
481 ICMP_NE = 33, ///< not equal
482 ICMP_UGT = 34, ///< unsigned greater than
483 ICMP_UGE = 35, ///< unsigned greater or equal
484 ICMP_ULT = 36, ///< unsigned less than
485 ICMP_ULE = 37, ///< unsigned less or equal
486 ICMP_SGT = 38, ///< signed greater than
487 ICMP_SGE = 39, ///< signed greater or equal
488 ICMP_SLT = 40, ///< signed less than
489 ICMP_SLE = 41, ///< signed less or equal
490 FIRST_ICMP_PREDICATE = ICMP_EQ,
491 LAST_ICMP_PREDICATE = ICMP_SLE,
492 BAD_ICMP_PREDICATE = ICMP_SLE + 1
495 /// @brief Constructor with insert-before-instruction semantics.
497 Predicate pred, ///< The predicate to use for the comparison
498 Value *LHS, ///< The left-hand-side of the expression
499 Value *RHS, ///< The right-hand-side of the expression
500 const std::string &Name = "", ///< Name of the instruction
501 Instruction *InsertBefore = 0 ///< Where to insert
502 ) : CmpInst(Instruction::ICmp, pred, LHS, RHS, Name, InsertBefore) {
505 /// @brief Constructor with insert-at-block-end semantics.
507 Predicate pred, ///< The predicate to use for the comparison
508 Value *LHS, ///< The left-hand-side of the expression
509 Value *RHS, ///< The right-hand-side of the expression
510 const std::string &Name, ///< Name of the instruction
511 BasicBlock *InsertAtEnd ///< Block to insert into.
512 ) : CmpInst(Instruction::ICmp, pred, LHS, RHS, Name, InsertAtEnd) {
515 /// @brief Return the predicate for this instruction.
516 Predicate getPredicate() const { return Predicate(SubclassData); }
518 /// @brief Set the predicate for this instruction to the specified value.
519 void setPredicate(Predicate P) { SubclassData = P; }
521 /// For example, EQ -> NE, UGT -> ULE, SLT -> SGE, etc.
522 /// @returns the inverse predicate for the instruction's current predicate.
523 /// @brief Return the inverse of the instruction's predicate.
524 Predicate getInversePredicate() const {
525 return getInversePredicate(getPredicate());
528 /// For example, EQ -> NE, UGT -> ULE, SLT -> SGE, etc.
529 /// @returns the inverse predicate for predicate provided in \p pred.
530 /// @brief Return the inverse of a given predicate
531 static Predicate getInversePredicate(Predicate pred);
533 /// For example, EQ->EQ, SLE->SGE, ULT->UGT, etc.
534 /// @returns the predicate that would be the result of exchanging the two
535 /// operands of the ICmpInst instruction without changing the result
537 /// @brief Return the predicate as if the operands were swapped
538 Predicate getSwappedPredicate() const {
539 return getSwappedPredicate(getPredicate());
542 /// This is a static version that you can use without an instruction
544 /// @brief Return the predicate as if the operands were swapped.
545 static Predicate getSwappedPredicate(Predicate pred);
547 /// For example, EQ->EQ, SLE->SLE, UGT->SGT, etc.
548 /// @returns the predicate that would be the result if the operand were
549 /// regarded as signed.
550 /// @brief Return the signed version of the predicate
551 Predicate getSignedPredicate() const {
552 return getSignedPredicate(getPredicate());
555 /// This is a static version that you can use without an instruction.
556 /// @brief Return the signed version of the predicate.
557 static Predicate getSignedPredicate(Predicate pred);
559 /// This also tests for commutativity. If isEquality() returns true then
560 /// the predicate is also commutative.
561 /// @returns true if the predicate of this instruction is EQ or NE.
562 /// @brief Determine if this is an equality predicate.
563 bool isEquality() const {
564 return SubclassData == ICMP_EQ || SubclassData == ICMP_NE;
567 /// @returns true if the predicate of this ICmpInst is commutative
568 /// @brief Determine if this relation is commutative.
569 bool isCommutative() const { return isEquality(); }
571 /// @returns true if the predicate is relational (not EQ or NE).
572 /// @brief Determine if this a relational predicate.
573 bool isRelational() const {
574 return !isEquality();
577 /// @returns true if the predicate of this ICmpInst is signed, false otherwise
578 /// @brief Determine if this instruction's predicate is signed.
579 bool isSignedPredicate() { return isSignedPredicate(getPredicate()); }
581 /// @returns true if the predicate provided is signed, false otherwise
582 /// @brief Determine if the predicate is signed.
583 static bool isSignedPredicate(Predicate pred);
585 /// Initialize a set of values that all satisfy the predicate with C.
586 /// @brief Make a ConstantRange for a relation with a constant value.
587 static ConstantRange makeConstantRange(Predicate pred, const APInt &C);
589 /// Exchange the two operands to this instruction in such a way that it does
590 /// not modify the semantics of the instruction. The predicate value may be
591 /// changed to retain the same result if the predicate is order dependent
593 /// @brief Swap operands and adjust predicate.
594 void swapOperands() {
595 SubclassData = getSwappedPredicate();
596 std::swap(Ops[0], Ops[1]);
599 // Methods for support type inquiry through isa, cast, and dyn_cast:
600 static inline bool classof(const ICmpInst *) { return true; }
601 static inline bool classof(const Instruction *I) {
602 return I->getOpcode() == Instruction::ICmp;
604 static inline bool classof(const Value *V) {
605 return isa<Instruction>(V) && classof(cast<Instruction>(V));
609 //===----------------------------------------------------------------------===//
611 //===----------------------------------------------------------------------===//
613 /// This instruction compares its operands according to the predicate given
614 /// to the constructor. It only operates on floating point values or packed
615 /// vectors of floating point values. The operands must be identical types.
616 /// @brief Represents a floating point comparison operator.
617 class FCmpInst: public CmpInst {
619 /// This enumeration lists the possible predicates for the FCmpInst. Values
620 /// in the range 0-31 are reserved for FCmpInst.
622 // Opcode U L G E Intuitive operation
623 FCMP_FALSE = 0, ///< 0 0 0 0 Always false (always folded)
624 FCMP_OEQ = 1, ///< 0 0 0 1 True if ordered and equal
625 FCMP_OGT = 2, ///< 0 0 1 0 True if ordered and greater than
626 FCMP_OGE = 3, ///< 0 0 1 1 True if ordered and greater than or equal
627 FCMP_OLT = 4, ///< 0 1 0 0 True if ordered and less than
628 FCMP_OLE = 5, ///< 0 1 0 1 True if ordered and less than or equal
629 FCMP_ONE = 6, ///< 0 1 1 0 True if ordered and operands are unequal
630 FCMP_ORD = 7, ///< 0 1 1 1 True if ordered (no nans)
631 FCMP_UNO = 8, ///< 1 0 0 0 True if unordered: isnan(X) | isnan(Y)
632 FCMP_UEQ = 9, ///< 1 0 0 1 True if unordered or equal
633 FCMP_UGT =10, ///< 1 0 1 0 True if unordered or greater than
634 FCMP_UGE =11, ///< 1 0 1 1 True if unordered, greater than, or equal
635 FCMP_ULT =12, ///< 1 1 0 0 True if unordered or less than
636 FCMP_ULE =13, ///< 1 1 0 1 True if unordered, less than, or equal
637 FCMP_UNE =14, ///< 1 1 1 0 True if unordered or not equal
638 FCMP_TRUE =15, ///< 1 1 1 1 Always true (always folded)
639 FIRST_FCMP_PREDICATE = FCMP_FALSE,
640 LAST_FCMP_PREDICATE = FCMP_TRUE,
641 BAD_FCMP_PREDICATE = FCMP_TRUE + 1
644 /// @brief Constructor with insert-before-instruction semantics.
646 Predicate pred, ///< The predicate to use for the comparison
647 Value *LHS, ///< The left-hand-side of the expression
648 Value *RHS, ///< The right-hand-side of the expression
649 const std::string &Name = "", ///< Name of the instruction
650 Instruction *InsertBefore = 0 ///< Where to insert
651 ) : CmpInst(Instruction::FCmp, pred, LHS, RHS, Name, InsertBefore) {
654 /// @brief Constructor with insert-at-block-end semantics.
656 Predicate pred, ///< The predicate to use for the comparison
657 Value *LHS, ///< The left-hand-side of the expression
658 Value *RHS, ///< The right-hand-side of the expression
659 const std::string &Name, ///< Name of the instruction
660 BasicBlock *InsertAtEnd ///< Block to insert into.
661 ) : CmpInst(Instruction::FCmp, pred, LHS, RHS, Name, InsertAtEnd) {
664 /// @brief Return the predicate for this instruction.
665 Predicate getPredicate() const { return Predicate(SubclassData); }
667 /// @brief Set the predicate for this instruction to the specified value.
668 void setPredicate(Predicate P) { SubclassData = P; }
670 /// For example, OEQ -> UNE, UGT -> OLE, OLT -> UGE, etc.
671 /// @returns the inverse predicate for the instructions current predicate.
672 /// @brief Return the inverse of the predicate
673 Predicate getInversePredicate() const {
674 return getInversePredicate(getPredicate());
677 /// For example, OEQ -> UNE, UGT -> OLE, OLT -> UGE, etc.
678 /// @returns the inverse predicate for \p pred.
679 /// @brief Return the inverse of a given predicate
680 static Predicate getInversePredicate(Predicate pred);
682 /// For example, OEQ->OEQ, ULE->UGE, OLT->OGT, etc.
683 /// @returns the predicate that would be the result of exchanging the two
684 /// operands of the ICmpInst instruction without changing the result
686 /// @brief Return the predicate as if the operands were swapped
687 Predicate getSwappedPredicate() const {
688 return getSwappedPredicate(getPredicate());
691 /// This is a static version that you can use without an instruction
693 /// @brief Return the predicate as if the operands were swapped.
694 static Predicate getSwappedPredicate(Predicate Opcode);
696 /// This also tests for commutativity. If isEquality() returns true then
697 /// the predicate is also commutative. Only the equality predicates are
699 /// @returns true if the predicate of this instruction is EQ or NE.
700 /// @brief Determine if this is an equality predicate.
701 bool isEquality() const {
702 return SubclassData == FCMP_OEQ || SubclassData == FCMP_ONE ||
703 SubclassData == FCMP_UEQ || SubclassData == FCMP_UNE;
705 bool isCommutative() const { return isEquality(); }
707 /// @returns true if the predicate is relational (not EQ or NE).
708 /// @brief Determine if this a relational predicate.
709 bool isRelational() const { return !isEquality(); }
711 /// Exchange the two operands to this instruction in such a way that it does
712 /// not modify the semantics of the instruction. The predicate value may be
713 /// changed to retain the same result if the predicate is order dependent
715 /// @brief Swap operands and adjust predicate.
716 void swapOperands() {
717 SubclassData = getSwappedPredicate();
718 std::swap(Ops[0], Ops[1]);
721 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
722 static inline bool classof(const FCmpInst *) { return true; }
723 static inline bool classof(const Instruction *I) {
724 return I->getOpcode() == Instruction::FCmp;
726 static inline bool classof(const Value *V) {
727 return isa<Instruction>(V) && classof(cast<Instruction>(V));
731 //===----------------------------------------------------------------------===//
733 //===----------------------------------------------------------------------===//
735 /// CallInst - This class represents a function call, abstracting a target
736 /// machine's calling convention. This class uses low bit of the SubClassData
737 /// field to indicate whether or not this is a tail call. The rest of the bits
738 /// hold the calling convention of the call.
740 class CallInst : public Instruction {
741 ParamAttrsList *ParamAttrs; ///< parameter attributes for call
742 CallInst(const CallInst &CI);
743 void init(Value *Func, Value* const *Params, unsigned NumParams);
744 void init(Value *Func, Value *Actual1, Value *Actual2);
745 void init(Value *Func, Value *Actual);
746 void init(Value *Func);
749 CallInst(Value *F, Value* const *Args, unsigned NumArgs,
750 const std::string &Name = "", Instruction *InsertBefore = 0);
751 CallInst(Value *F, Value *const *Args, unsigned NumArgs,
752 const std::string &Name, BasicBlock *InsertAtEnd);
754 // Alternate CallInst ctors w/ two actuals, w/ one actual and no
755 // actuals, respectively.
756 CallInst(Value *F, Value *Actual1, Value *Actual2,
757 const std::string& Name = "", Instruction *InsertBefore = 0);
758 CallInst(Value *F, Value *Actual1, Value *Actual2,
759 const std::string& Name, BasicBlock *InsertAtEnd);
760 CallInst(Value *F, Value *Actual, const std::string& Name = "",
761 Instruction *InsertBefore = 0);
762 CallInst(Value *F, Value *Actual, const std::string& Name,
763 BasicBlock *InsertAtEnd);
764 explicit CallInst(Value *F, const std::string &Name = "",
765 Instruction *InsertBefore = 0);
766 CallInst(Value *F, const std::string &Name, BasicBlock *InsertAtEnd);
769 virtual CallInst *clone() const;
771 bool isTailCall() const { return SubclassData & 1; }
772 void setTailCall(bool isTailCall = true) {
773 SubclassData = (SubclassData & ~1) | unsigned(isTailCall);
776 /// getCallingConv/setCallingConv - Get or set the calling convention of this
778 unsigned getCallingConv() const { return SubclassData >> 1; }
779 void setCallingConv(unsigned CC) {
780 SubclassData = (SubclassData & 1) | (CC << 1);
783 /// Obtains a pointer to the ParamAttrsList object which holds the
784 /// parameter attributes information, if any.
785 /// @returns 0 if no attributes have been set.
786 /// @brief Get the parameter attributes.
787 ParamAttrsList *getParamAttrs() const { return ParamAttrs; }
789 /// Sets the parameter attributes for this CallInst. To construct a
790 /// ParamAttrsList, see ParameterAttributes.h
791 /// @brief Set the parameter attributes.
792 void setParamAttrs(ParamAttrsList *attrs);
794 /// getCalledFunction - Return the function being called by this instruction
795 /// if it is a direct call. If it is a call through a function pointer,
797 Function *getCalledFunction() const {
798 return static_cast<Function*>(dyn_cast<Function>(getOperand(0)));
801 /// getCalledValue - Get a pointer to the function that is invoked by this
803 inline const Value *getCalledValue() const { return getOperand(0); }
804 inline Value *getCalledValue() { return getOperand(0); }
806 // Methods for support type inquiry through isa, cast, and dyn_cast:
807 static inline bool classof(const CallInst *) { return true; }
808 static inline bool classof(const Instruction *I) {
809 return I->getOpcode() == Instruction::Call;
811 static inline bool classof(const Value *V) {
812 return isa<Instruction>(V) && classof(cast<Instruction>(V));
816 //===----------------------------------------------------------------------===//
818 //===----------------------------------------------------------------------===//
820 /// SelectInst - This class represents the LLVM 'select' instruction.
822 class SelectInst : public Instruction {
825 void init(Value *C, Value *S1, Value *S2) {
826 Ops[0].init(C, this);
827 Ops[1].init(S1, this);
828 Ops[2].init(S2, this);
831 SelectInst(const SelectInst &SI)
832 : Instruction(SI.getType(), SI.getOpcode(), Ops, 3) {
833 init(SI.Ops[0], SI.Ops[1], SI.Ops[2]);
836 SelectInst(Value *C, Value *S1, Value *S2, const std::string &Name = "",
837 Instruction *InsertBefore = 0)
838 : Instruction(S1->getType(), Instruction::Select, Ops, 3, InsertBefore) {
842 SelectInst(Value *C, Value *S1, Value *S2, const std::string &Name,
843 BasicBlock *InsertAtEnd)
844 : Instruction(S1->getType(), Instruction::Select, Ops, 3, InsertAtEnd) {
849 Value *getCondition() const { return Ops[0]; }
850 Value *getTrueValue() const { return Ops[1]; }
851 Value *getFalseValue() const { return Ops[2]; }
853 /// Transparently provide more efficient getOperand methods.
854 Value *getOperand(unsigned i) const {
855 assert(i < 3 && "getOperand() out of range!");
858 void setOperand(unsigned i, Value *Val) {
859 assert(i < 3 && "setOperand() out of range!");
862 unsigned getNumOperands() const { return 3; }
864 OtherOps getOpcode() const {
865 return static_cast<OtherOps>(Instruction::getOpcode());
868 virtual SelectInst *clone() const;
870 // Methods for support type inquiry through isa, cast, and dyn_cast:
871 static inline bool classof(const SelectInst *) { return true; }
872 static inline bool classof(const Instruction *I) {
873 return I->getOpcode() == Instruction::Select;
875 static inline bool classof(const Value *V) {
876 return isa<Instruction>(V) && classof(cast<Instruction>(V));
880 //===----------------------------------------------------------------------===//
882 //===----------------------------------------------------------------------===//
884 /// VAArgInst - This class represents the va_arg llvm instruction, which returns
885 /// an argument of the specified type given a va_list and increments that list
887 class VAArgInst : public UnaryInstruction {
888 VAArgInst(const VAArgInst &VAA)
889 : UnaryInstruction(VAA.getType(), VAArg, VAA.getOperand(0)) {}
891 VAArgInst(Value *List, const Type *Ty, const std::string &Name = "",
892 Instruction *InsertBefore = 0)
893 : UnaryInstruction(Ty, VAArg, List, InsertBefore) {
896 VAArgInst(Value *List, const Type *Ty, const std::string &Name,
897 BasicBlock *InsertAtEnd)
898 : UnaryInstruction(Ty, VAArg, List, InsertAtEnd) {
902 virtual VAArgInst *clone() const;
904 // Methods for support type inquiry through isa, cast, and dyn_cast:
905 static inline bool classof(const VAArgInst *) { return true; }
906 static inline bool classof(const Instruction *I) {
907 return I->getOpcode() == VAArg;
909 static inline bool classof(const Value *V) {
910 return isa<Instruction>(V) && classof(cast<Instruction>(V));
914 //===----------------------------------------------------------------------===//
915 // ExtractElementInst Class
916 //===----------------------------------------------------------------------===//
918 /// ExtractElementInst - This instruction extracts a single (scalar)
919 /// element from a VectorType value
921 class ExtractElementInst : public Instruction {
923 ExtractElementInst(const ExtractElementInst &EE) :
924 Instruction(EE.getType(), ExtractElement, Ops, 2) {
925 Ops[0].init(EE.Ops[0], this);
926 Ops[1].init(EE.Ops[1], this);
930 ExtractElementInst(Value *Vec, Value *Idx, const std::string &Name = "",
931 Instruction *InsertBefore = 0);
932 ExtractElementInst(Value *Vec, unsigned Idx, const std::string &Name = "",
933 Instruction *InsertBefore = 0);
934 ExtractElementInst(Value *Vec, Value *Idx, const std::string &Name,
935 BasicBlock *InsertAtEnd);
936 ExtractElementInst(Value *Vec, unsigned Idx, const std::string &Name,
937 BasicBlock *InsertAtEnd);
939 /// isValidOperands - Return true if an extractelement instruction can be
940 /// formed with the specified operands.
941 static bool isValidOperands(const Value *Vec, const Value *Idx);
943 virtual ExtractElementInst *clone() const;
945 /// Transparently provide more efficient getOperand methods.
946 Value *getOperand(unsigned i) const {
947 assert(i < 2 && "getOperand() out of range!");
950 void setOperand(unsigned i, Value *Val) {
951 assert(i < 2 && "setOperand() out of range!");
954 unsigned getNumOperands() const { return 2; }
956 // Methods for support type inquiry through isa, cast, and dyn_cast:
957 static inline bool classof(const ExtractElementInst *) { return true; }
958 static inline bool classof(const Instruction *I) {
959 return I->getOpcode() == Instruction::ExtractElement;
961 static inline bool classof(const Value *V) {
962 return isa<Instruction>(V) && classof(cast<Instruction>(V));
966 //===----------------------------------------------------------------------===//
967 // InsertElementInst Class
968 //===----------------------------------------------------------------------===//
970 /// InsertElementInst - This instruction inserts a single (scalar)
971 /// element into a VectorType value
973 class InsertElementInst : public Instruction {
975 InsertElementInst(const InsertElementInst &IE);
977 InsertElementInst(Value *Vec, Value *NewElt, Value *Idx,
978 const std::string &Name = "",Instruction *InsertBefore = 0);
979 InsertElementInst(Value *Vec, Value *NewElt, unsigned Idx,
980 const std::string &Name = "",Instruction *InsertBefore = 0);
981 InsertElementInst(Value *Vec, Value *NewElt, Value *Idx,
982 const std::string &Name, BasicBlock *InsertAtEnd);
983 InsertElementInst(Value *Vec, Value *NewElt, unsigned Idx,
984 const std::string &Name, BasicBlock *InsertAtEnd);
986 /// isValidOperands - Return true if an insertelement instruction can be
987 /// formed with the specified operands.
988 static bool isValidOperands(const Value *Vec, const Value *NewElt,
991 virtual InsertElementInst *clone() const;
993 /// getType - Overload to return most specific vector type.
995 inline const VectorType *getType() const {
996 return reinterpret_cast<const VectorType*>(Instruction::getType());
999 /// Transparently provide more efficient getOperand methods.
1000 Value *getOperand(unsigned i) const {
1001 assert(i < 3 && "getOperand() out of range!");
1004 void setOperand(unsigned i, Value *Val) {
1005 assert(i < 3 && "setOperand() out of range!");
1008 unsigned getNumOperands() const { return 3; }
1010 // Methods for support type inquiry through isa, cast, and dyn_cast:
1011 static inline bool classof(const InsertElementInst *) { return true; }
1012 static inline bool classof(const Instruction *I) {
1013 return I->getOpcode() == Instruction::InsertElement;
1015 static inline bool classof(const Value *V) {
1016 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1020 //===----------------------------------------------------------------------===//
1021 // ShuffleVectorInst Class
1022 //===----------------------------------------------------------------------===//
1024 /// ShuffleVectorInst - This instruction constructs a fixed permutation of two
1027 class ShuffleVectorInst : public Instruction {
1029 ShuffleVectorInst(const ShuffleVectorInst &IE);
1031 ShuffleVectorInst(Value *V1, Value *V2, Value *Mask,
1032 const std::string &Name = "", Instruction *InsertBefor = 0);
1033 ShuffleVectorInst(Value *V1, Value *V2, Value *Mask,
1034 const std::string &Name, BasicBlock *InsertAtEnd);
1036 /// isValidOperands - Return true if a shufflevector instruction can be
1037 /// formed with the specified operands.
1038 static bool isValidOperands(const Value *V1, const Value *V2,
1041 virtual ShuffleVectorInst *clone() const;
1043 /// getType - Overload to return most specific vector type.
1045 inline const VectorType *getType() const {
1046 return reinterpret_cast<const VectorType*>(Instruction::getType());
1049 /// Transparently provide more efficient getOperand methods.
1050 Value *getOperand(unsigned i) const {
1051 assert(i < 3 && "getOperand() out of range!");
1054 void setOperand(unsigned i, Value *Val) {
1055 assert(i < 3 && "setOperand() out of range!");
1058 unsigned getNumOperands() const { return 3; }
1060 // Methods for support type inquiry through isa, cast, and dyn_cast:
1061 static inline bool classof(const ShuffleVectorInst *) { return true; }
1062 static inline bool classof(const Instruction *I) {
1063 return I->getOpcode() == Instruction::ShuffleVector;
1065 static inline bool classof(const Value *V) {
1066 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1071 //===----------------------------------------------------------------------===//
1073 //===----------------------------------------------------------------------===//
1075 // PHINode - The PHINode class is used to represent the magical mystical PHI
1076 // node, that can not exist in nature, but can be synthesized in a computer
1077 // scientist's overactive imagination.
1079 class PHINode : public Instruction {
1080 /// ReservedSpace - The number of operands actually allocated. NumOperands is
1081 /// the number actually in use.
1082 unsigned ReservedSpace;
1083 PHINode(const PHINode &PN);
1085 explicit PHINode(const Type *Ty, const std::string &Name = "",
1086 Instruction *InsertBefore = 0)
1087 : Instruction(Ty, Instruction::PHI, 0, 0, InsertBefore),
1092 PHINode(const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd)
1093 : Instruction(Ty, Instruction::PHI, 0, 0, InsertAtEnd),
1100 /// reserveOperandSpace - This method can be used to avoid repeated
1101 /// reallocation of PHI operand lists by reserving space for the correct
1102 /// number of operands before adding them. Unlike normal vector reserves,
1103 /// this method can also be used to trim the operand space.
1104 void reserveOperandSpace(unsigned NumValues) {
1105 resizeOperands(NumValues*2);
1108 virtual PHINode *clone() const;
1110 /// getNumIncomingValues - Return the number of incoming edges
1112 unsigned getNumIncomingValues() const { return getNumOperands()/2; }
1114 /// getIncomingValue - Return incoming value number x
1116 Value *getIncomingValue(unsigned i) const {
1117 assert(i*2 < getNumOperands() && "Invalid value number!");
1118 return getOperand(i*2);
1120 void setIncomingValue(unsigned i, Value *V) {
1121 assert(i*2 < getNumOperands() && "Invalid value number!");
1124 unsigned getOperandNumForIncomingValue(unsigned i) {
1128 /// getIncomingBlock - Return incoming basic block number x
1130 BasicBlock *getIncomingBlock(unsigned i) const {
1131 return reinterpret_cast<BasicBlock*>(getOperand(i*2+1));
1133 void setIncomingBlock(unsigned i, BasicBlock *BB) {
1134 setOperand(i*2+1, reinterpret_cast<Value*>(BB));
1136 unsigned getOperandNumForIncomingBlock(unsigned i) {
1140 /// addIncoming - Add an incoming value to the end of the PHI list
1142 void addIncoming(Value *V, BasicBlock *BB) {
1143 assert(getType() == V->getType() &&
1144 "All operands to PHI node must be the same type as the PHI node!");
1145 unsigned OpNo = NumOperands;
1146 if (OpNo+2 > ReservedSpace)
1147 resizeOperands(0); // Get more space!
1148 // Initialize some new operands.
1149 NumOperands = OpNo+2;
1150 OperandList[OpNo].init(V, this);
1151 OperandList[OpNo+1].init(reinterpret_cast<Value*>(BB), this);
1154 /// removeIncomingValue - Remove an incoming value. This is useful if a
1155 /// predecessor basic block is deleted. The value removed is returned.
1157 /// If the last incoming value for a PHI node is removed (and DeletePHIIfEmpty
1158 /// is true), the PHI node is destroyed and any uses of it are replaced with
1159 /// dummy values. The only time there should be zero incoming values to a PHI
1160 /// node is when the block is dead, so this strategy is sound.
1162 Value *removeIncomingValue(unsigned Idx, bool DeletePHIIfEmpty = true);
1164 Value *removeIncomingValue(const BasicBlock *BB, bool DeletePHIIfEmpty =true){
1165 int Idx = getBasicBlockIndex(BB);
1166 assert(Idx >= 0 && "Invalid basic block argument to remove!");
1167 return removeIncomingValue(Idx, DeletePHIIfEmpty);
1170 /// getBasicBlockIndex - Return the first index of the specified basic
1171 /// block in the value list for this PHI. Returns -1 if no instance.
1173 int getBasicBlockIndex(const BasicBlock *BB) const {
1174 Use *OL = OperandList;
1175 for (unsigned i = 0, e = getNumOperands(); i != e; i += 2)
1176 if (OL[i+1] == reinterpret_cast<const Value*>(BB)) return i/2;
1180 Value *getIncomingValueForBlock(const BasicBlock *BB) const {
1181 return getIncomingValue(getBasicBlockIndex(BB));
1184 /// hasConstantValue - If the specified PHI node always merges together the
1185 /// same value, return the value, otherwise return null.
1187 Value *hasConstantValue(bool AllowNonDominatingInstruction = false) const;
1189 /// Methods for support type inquiry through isa, cast, and dyn_cast:
1190 static inline bool classof(const PHINode *) { return true; }
1191 static inline bool classof(const Instruction *I) {
1192 return I->getOpcode() == Instruction::PHI;
1194 static inline bool classof(const Value *V) {
1195 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1198 void resizeOperands(unsigned NumOperands);
1201 //===----------------------------------------------------------------------===//
1203 //===----------------------------------------------------------------------===//
1205 //===---------------------------------------------------------------------------
1206 /// ReturnInst - Return a value (possibly void), from a function. Execution
1207 /// does not continue in this function any longer.
1209 class ReturnInst : public TerminatorInst {
1210 Use RetVal; // Return Value: null if 'void'.
1211 ReturnInst(const ReturnInst &RI);
1212 void init(Value *RetVal);
1215 // ReturnInst constructors:
1216 // ReturnInst() - 'ret void' instruction
1217 // ReturnInst( null) - 'ret void' instruction
1218 // ReturnInst(Value* X) - 'ret X' instruction
1219 // ReturnInst( null, Inst *) - 'ret void' instruction, insert before I
1220 // ReturnInst(Value* X, Inst *I) - 'ret X' instruction, insert before I
1221 // ReturnInst( null, BB *B) - 'ret void' instruction, insert @ end of BB
1222 // ReturnInst(Value* X, BB *B) - 'ret X' instruction, insert @ end of BB
1224 // NOTE: If the Value* passed is of type void then the constructor behaves as
1225 // if it was passed NULL.
1226 explicit ReturnInst(Value *retVal = 0, Instruction *InsertBefore = 0);
1227 ReturnInst(Value *retVal, BasicBlock *InsertAtEnd);
1228 explicit ReturnInst(BasicBlock *InsertAtEnd);
1230 virtual ReturnInst *clone() const;
1232 // Transparently provide more efficient getOperand methods.
1233 Value *getOperand(unsigned i) const {
1234 assert(i < getNumOperands() && "getOperand() out of range!");
1237 void setOperand(unsigned i, Value *Val) {
1238 assert(i < getNumOperands() && "setOperand() out of range!");
1242 Value *getReturnValue() const { return RetVal; }
1244 unsigned getNumSuccessors() const { return 0; }
1246 // Methods for support type inquiry through isa, cast, and dyn_cast:
1247 static inline bool classof(const ReturnInst *) { return true; }
1248 static inline bool classof(const Instruction *I) {
1249 return (I->getOpcode() == Instruction::Ret);
1251 static inline bool classof(const Value *V) {
1252 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1255 virtual BasicBlock *getSuccessorV(unsigned idx) const;
1256 virtual unsigned getNumSuccessorsV() const;
1257 virtual void setSuccessorV(unsigned idx, BasicBlock *B);
1260 //===----------------------------------------------------------------------===//
1262 //===----------------------------------------------------------------------===//
1264 //===---------------------------------------------------------------------------
1265 /// BranchInst - Conditional or Unconditional Branch instruction.
1267 class BranchInst : public TerminatorInst {
1268 /// Ops list - Branches are strange. The operands are ordered:
1269 /// TrueDest, FalseDest, Cond. This makes some accessors faster because
1270 /// they don't have to check for cond/uncond branchness.
1272 BranchInst(const BranchInst &BI);
1275 // BranchInst constructors (where {B, T, F} are blocks, and C is a condition):
1276 // BranchInst(BB *B) - 'br B'
1277 // BranchInst(BB* T, BB *F, Value *C) - 'br C, T, F'
1278 // BranchInst(BB* B, Inst *I) - 'br B' insert before I
1279 // BranchInst(BB* T, BB *F, Value *C, Inst *I) - 'br C, T, F', insert before I
1280 // BranchInst(BB* B, BB *I) - 'br B' insert at end
1281 // BranchInst(BB* T, BB *F, Value *C, BB *I) - 'br C, T, F', insert at end
1282 explicit BranchInst(BasicBlock *IfTrue, Instruction *InsertBefore = 0);
1283 BranchInst(BasicBlock *IfTrue, BasicBlock *IfFalse, Value *Cond,
1284 Instruction *InsertBefore = 0);
1285 BranchInst(BasicBlock *IfTrue, BasicBlock *InsertAtEnd);
1286 BranchInst(BasicBlock *IfTrue, BasicBlock *IfFalse, Value *Cond,
1287 BasicBlock *InsertAtEnd);
1289 /// Transparently provide more efficient getOperand methods.
1290 Value *getOperand(unsigned i) const {
1291 assert(i < getNumOperands() && "getOperand() out of range!");
1294 void setOperand(unsigned i, Value *Val) {
1295 assert(i < getNumOperands() && "setOperand() out of range!");
1299 virtual BranchInst *clone() const;
1301 inline bool isUnconditional() const { return getNumOperands() == 1; }
1302 inline bool isConditional() const { return getNumOperands() == 3; }
1304 inline Value *getCondition() const {
1305 assert(isConditional() && "Cannot get condition of an uncond branch!");
1306 return getOperand(2);
1309 void setCondition(Value *V) {
1310 assert(isConditional() && "Cannot set condition of unconditional branch!");
1314 // setUnconditionalDest - Change the current branch to an unconditional branch
1315 // targeting the specified block.
1316 // FIXME: Eliminate this ugly method.
1317 void setUnconditionalDest(BasicBlock *Dest) {
1318 if (isConditional()) { // Convert this to an uncond branch.
1323 setOperand(0, reinterpret_cast<Value*>(Dest));
1326 unsigned getNumSuccessors() const { return 1+isConditional(); }
1328 BasicBlock *getSuccessor(unsigned i) const {
1329 assert(i < getNumSuccessors() && "Successor # out of range for Branch!");
1330 return cast<BasicBlock>(getOperand(i));
1333 void setSuccessor(unsigned idx, BasicBlock *NewSucc) {
1334 assert(idx < getNumSuccessors() && "Successor # out of range for Branch!");
1335 setOperand(idx, reinterpret_cast<Value*>(NewSucc));
1338 // Methods for support type inquiry through isa, cast, and dyn_cast:
1339 static inline bool classof(const BranchInst *) { return true; }
1340 static inline bool classof(const Instruction *I) {
1341 return (I->getOpcode() == Instruction::Br);
1343 static inline bool classof(const Value *V) {
1344 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1347 virtual BasicBlock *getSuccessorV(unsigned idx) const;
1348 virtual unsigned getNumSuccessorsV() const;
1349 virtual void setSuccessorV(unsigned idx, BasicBlock *B);
1352 //===----------------------------------------------------------------------===//
1354 //===----------------------------------------------------------------------===//
1356 //===---------------------------------------------------------------------------
1357 /// SwitchInst - Multiway switch
1359 class SwitchInst : public TerminatorInst {
1360 unsigned ReservedSpace;
1361 // Operand[0] = Value to switch on
1362 // Operand[1] = Default basic block destination
1363 // Operand[2n ] = Value to match
1364 // Operand[2n+1] = BasicBlock to go to on match
1365 SwitchInst(const SwitchInst &RI);
1366 void init(Value *Value, BasicBlock *Default, unsigned NumCases);
1367 void resizeOperands(unsigned No);
1369 /// SwitchInst ctor - Create a new switch instruction, specifying a value to
1370 /// switch on and a default destination. The number of additional cases can
1371 /// be specified here to make memory allocation more efficient. This
1372 /// constructor can also autoinsert before another instruction.
1373 SwitchInst(Value *Value, BasicBlock *Default, unsigned NumCases,
1374 Instruction *InsertBefore = 0);
1376 /// SwitchInst ctor - Create a new switch instruction, specifying a value to
1377 /// switch on and a default destination. The number of additional cases can
1378 /// be specified here to make memory allocation more efficient. This
1379 /// constructor also autoinserts at the end of the specified BasicBlock.
1380 SwitchInst(Value *Value, BasicBlock *Default, unsigned NumCases,
1381 BasicBlock *InsertAtEnd);
1385 // Accessor Methods for Switch stmt
1386 inline Value *getCondition() const { return getOperand(0); }
1387 void setCondition(Value *V) { setOperand(0, V); }
1389 inline BasicBlock *getDefaultDest() const {
1390 return cast<BasicBlock>(getOperand(1));
1393 /// getNumCases - return the number of 'cases' in this switch instruction.
1394 /// Note that case #0 is always the default case.
1395 unsigned getNumCases() const {
1396 return getNumOperands()/2;
1399 /// getCaseValue - Return the specified case value. Note that case #0, the
1400 /// default destination, does not have a case value.
1401 ConstantInt *getCaseValue(unsigned i) {
1402 assert(i && i < getNumCases() && "Illegal case value to get!");
1403 return getSuccessorValue(i);
1406 /// getCaseValue - Return the specified case value. Note that case #0, the
1407 /// default destination, does not have a case value.
1408 const ConstantInt *getCaseValue(unsigned i) const {
1409 assert(i && i < getNumCases() && "Illegal case value to get!");
1410 return getSuccessorValue(i);
1413 /// findCaseValue - Search all of the case values for the specified constant.
1414 /// If it is explicitly handled, return the case number of it, otherwise
1415 /// return 0 to indicate that it is handled by the default handler.
1416 unsigned findCaseValue(const ConstantInt *C) const {
1417 for (unsigned i = 1, e = getNumCases(); i != e; ++i)
1418 if (getCaseValue(i) == C)
1423 /// findCaseDest - Finds the unique case value for a given successor. Returns
1424 /// null if the successor is not found, not unique, or is the default case.
1425 ConstantInt *findCaseDest(BasicBlock *BB) {
1426 if (BB == getDefaultDest()) return NULL;
1428 ConstantInt *CI = NULL;
1429 for (unsigned i = 1, e = getNumCases(); i != e; ++i) {
1430 if (getSuccessor(i) == BB) {
1431 if (CI) return NULL; // Multiple cases lead to BB.
1432 else CI = getCaseValue(i);
1438 /// addCase - Add an entry to the switch instruction...
1440 void addCase(ConstantInt *OnVal, BasicBlock *Dest);
1442 /// removeCase - This method removes the specified successor from the switch
1443 /// instruction. Note that this cannot be used to remove the default
1444 /// destination (successor #0).
1446 void removeCase(unsigned idx);
1448 virtual SwitchInst *clone() const;
1450 unsigned getNumSuccessors() const { return getNumOperands()/2; }
1451 BasicBlock *getSuccessor(unsigned idx) const {
1452 assert(idx < getNumSuccessors() &&"Successor idx out of range for switch!");
1453 return cast<BasicBlock>(getOperand(idx*2+1));
1455 void setSuccessor(unsigned idx, BasicBlock *NewSucc) {
1456 assert(idx < getNumSuccessors() && "Successor # out of range for switch!");
1457 setOperand(idx*2+1, reinterpret_cast<Value*>(NewSucc));
1460 // getSuccessorValue - Return the value associated with the specified
1462 inline ConstantInt *getSuccessorValue(unsigned idx) const {
1463 assert(idx < getNumSuccessors() && "Successor # out of range!");
1464 return reinterpret_cast<ConstantInt*>(getOperand(idx*2));
1467 // Methods for support type inquiry through isa, cast, and dyn_cast:
1468 static inline bool classof(const SwitchInst *) { return true; }
1469 static inline bool classof(const Instruction *I) {
1470 return I->getOpcode() == Instruction::Switch;
1472 static inline bool classof(const Value *V) {
1473 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1476 virtual BasicBlock *getSuccessorV(unsigned idx) const;
1477 virtual unsigned getNumSuccessorsV() const;
1478 virtual void setSuccessorV(unsigned idx, BasicBlock *B);
1481 //===----------------------------------------------------------------------===//
1483 //===----------------------------------------------------------------------===//
1485 //===---------------------------------------------------------------------------
1487 /// InvokeInst - Invoke instruction. The SubclassData field is used to hold the
1488 /// calling convention of the call.
1490 class InvokeInst : public TerminatorInst {
1491 ParamAttrsList *ParamAttrs;
1492 InvokeInst(const InvokeInst &BI);
1493 void init(Value *Fn, BasicBlock *IfNormal, BasicBlock *IfException,
1494 Value* const *Args, unsigned NumArgs);
1496 InvokeInst(Value *Fn, BasicBlock *IfNormal, BasicBlock *IfException,
1497 Value* const* Args, unsigned NumArgs, const std::string &Name = "",
1498 Instruction *InsertBefore = 0);
1499 InvokeInst(Value *Fn, BasicBlock *IfNormal, BasicBlock *IfException,
1500 Value* const* Args, unsigned NumArgs, const std::string &Name,
1501 BasicBlock *InsertAtEnd);
1504 virtual InvokeInst *clone() const;
1506 /// getCallingConv/setCallingConv - Get or set the calling convention of this
1508 unsigned getCallingConv() const { return SubclassData; }
1509 void setCallingConv(unsigned CC) {
1513 /// Obtains a pointer to the ParamAttrsList object which holds the
1514 /// parameter attributes information, if any.
1515 /// @returns 0 if no attributes have been set.
1516 /// @brief Get the parameter attributes.
1517 ParamAttrsList *getParamAttrs() const { return ParamAttrs; }
1519 /// Sets the parameter attributes for this InvokeInst. To construct a
1520 /// ParamAttrsList, see ParameterAttributes.h
1521 /// @brief Set the parameter attributes.
1522 void setParamAttrs(ParamAttrsList *attrs);
1524 /// getCalledFunction - Return the function called, or null if this is an
1525 /// indirect function invocation.
1527 Function *getCalledFunction() const {
1528 return dyn_cast<Function>(getOperand(0));
1531 // getCalledValue - Get a pointer to a function that is invoked by this inst.
1532 inline Value *getCalledValue() const { return getOperand(0); }
1534 // get*Dest - Return the destination basic blocks...
1535 BasicBlock *getNormalDest() const {
1536 return cast<BasicBlock>(getOperand(1));
1538 BasicBlock *getUnwindDest() const {
1539 return cast<BasicBlock>(getOperand(2));
1541 void setNormalDest(BasicBlock *B) {
1542 setOperand(1, reinterpret_cast<Value*>(B));
1545 void setUnwindDest(BasicBlock *B) {
1546 setOperand(2, reinterpret_cast<Value*>(B));
1549 inline BasicBlock *getSuccessor(unsigned i) const {
1550 assert(i < 2 && "Successor # out of range for invoke!");
1551 return i == 0 ? getNormalDest() : getUnwindDest();
1554 void setSuccessor(unsigned idx, BasicBlock *NewSucc) {
1555 assert(idx < 2 && "Successor # out of range for invoke!");
1556 setOperand(idx+1, reinterpret_cast<Value*>(NewSucc));
1559 unsigned getNumSuccessors() const { return 2; }
1561 // Methods for support type inquiry through isa, cast, and dyn_cast:
1562 static inline bool classof(const InvokeInst *) { return true; }
1563 static inline bool classof(const Instruction *I) {
1564 return (I->getOpcode() == Instruction::Invoke);
1566 static inline bool classof(const Value *V) {
1567 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1570 virtual BasicBlock *getSuccessorV(unsigned idx) const;
1571 virtual unsigned getNumSuccessorsV() const;
1572 virtual void setSuccessorV(unsigned idx, BasicBlock *B);
1576 //===----------------------------------------------------------------------===//
1578 //===----------------------------------------------------------------------===//
1580 //===---------------------------------------------------------------------------
1581 /// UnwindInst - Immediately exit the current function, unwinding the stack
1582 /// until an invoke instruction is found.
1584 class UnwindInst : public TerminatorInst {
1586 explicit UnwindInst(Instruction *InsertBefore = 0);
1587 explicit UnwindInst(BasicBlock *InsertAtEnd);
1589 virtual UnwindInst *clone() const;
1591 unsigned getNumSuccessors() const { return 0; }
1593 // Methods for support type inquiry through isa, cast, and dyn_cast:
1594 static inline bool classof(const UnwindInst *) { return true; }
1595 static inline bool classof(const Instruction *I) {
1596 return I->getOpcode() == Instruction::Unwind;
1598 static inline bool classof(const Value *V) {
1599 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1602 virtual BasicBlock *getSuccessorV(unsigned idx) const;
1603 virtual unsigned getNumSuccessorsV() const;
1604 virtual void setSuccessorV(unsigned idx, BasicBlock *B);
1607 //===----------------------------------------------------------------------===//
1608 // UnreachableInst Class
1609 //===----------------------------------------------------------------------===//
1611 //===---------------------------------------------------------------------------
1612 /// UnreachableInst - This function has undefined behavior. In particular, the
1613 /// presence of this instruction indicates some higher level knowledge that the
1614 /// end of the block cannot be reached.
1616 class UnreachableInst : public TerminatorInst {
1618 explicit UnreachableInst(Instruction *InsertBefore = 0);
1619 explicit UnreachableInst(BasicBlock *InsertAtEnd);
1621 virtual UnreachableInst *clone() const;
1623 unsigned getNumSuccessors() const { return 0; }
1625 // Methods for support type inquiry through isa, cast, and dyn_cast:
1626 static inline bool classof(const UnreachableInst *) { return true; }
1627 static inline bool classof(const Instruction *I) {
1628 return I->getOpcode() == Instruction::Unreachable;
1630 static inline bool classof(const Value *V) {
1631 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1634 virtual BasicBlock *getSuccessorV(unsigned idx) const;
1635 virtual unsigned getNumSuccessorsV() const;
1636 virtual void setSuccessorV(unsigned idx, BasicBlock *B);
1639 //===----------------------------------------------------------------------===//
1641 //===----------------------------------------------------------------------===//
1643 /// @brief This class represents a truncation of integer types.
1644 class TruncInst : public CastInst {
1645 /// Private copy constructor
1646 TruncInst(const TruncInst &CI)
1647 : CastInst(CI.getType(), Trunc, CI.getOperand(0)) {
1650 /// @brief Constructor with insert-before-instruction semantics
1652 Value *S, ///< The value to be truncated
1653 const Type *Ty, ///< The (smaller) type to truncate to
1654 const std::string &Name = "", ///< A name for the new instruction
1655 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
1658 /// @brief Constructor with insert-at-end-of-block semantics
1660 Value *S, ///< The value to be truncated
1661 const Type *Ty, ///< The (smaller) type to truncate to
1662 const std::string &Name, ///< A name for the new instruction
1663 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
1666 /// @brief Clone an identical TruncInst
1667 virtual CastInst *clone() const;
1669 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
1670 static inline bool classof(const TruncInst *) { return true; }
1671 static inline bool classof(const Instruction *I) {
1672 return I->getOpcode() == Trunc;
1674 static inline bool classof(const Value *V) {
1675 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1679 //===----------------------------------------------------------------------===//
1681 //===----------------------------------------------------------------------===//
1683 /// @brief This class represents zero extension of integer types.
1684 class ZExtInst : public CastInst {
1685 /// @brief Private copy constructor
1686 ZExtInst(const ZExtInst &CI)
1687 : CastInst(CI.getType(), ZExt, CI.getOperand(0)) {
1690 /// @brief Constructor with insert-before-instruction semantics
1692 Value *S, ///< The value to be zero extended
1693 const Type *Ty, ///< The type to zero extend to
1694 const std::string &Name = "", ///< A name for the new instruction
1695 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
1698 /// @brief Constructor with insert-at-end semantics.
1700 Value *S, ///< The value to be zero extended
1701 const Type *Ty, ///< The type to zero extend to
1702 const std::string &Name, ///< A name for the new instruction
1703 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
1706 /// @brief Clone an identical ZExtInst
1707 virtual CastInst *clone() const;
1709 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
1710 static inline bool classof(const ZExtInst *) { return true; }
1711 static inline bool classof(const Instruction *I) {
1712 return I->getOpcode() == ZExt;
1714 static inline bool classof(const Value *V) {
1715 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1719 //===----------------------------------------------------------------------===//
1721 //===----------------------------------------------------------------------===//
1723 /// @brief This class represents a sign extension of integer types.
1724 class SExtInst : public CastInst {
1725 /// @brief Private copy constructor
1726 SExtInst(const SExtInst &CI)
1727 : CastInst(CI.getType(), SExt, CI.getOperand(0)) {
1730 /// @brief Constructor with insert-before-instruction semantics
1732 Value *S, ///< The value to be sign extended
1733 const Type *Ty, ///< The type to sign extend to
1734 const std::string &Name = "", ///< A name for the new instruction
1735 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
1738 /// @brief Constructor with insert-at-end-of-block semantics
1740 Value *S, ///< The value to be sign extended
1741 const Type *Ty, ///< The type to sign extend to
1742 const std::string &Name, ///< A name for the new instruction
1743 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
1746 /// @brief Clone an identical SExtInst
1747 virtual CastInst *clone() const;
1749 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
1750 static inline bool classof(const SExtInst *) { return true; }
1751 static inline bool classof(const Instruction *I) {
1752 return I->getOpcode() == SExt;
1754 static inline bool classof(const Value *V) {
1755 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1759 //===----------------------------------------------------------------------===//
1760 // FPTruncInst Class
1761 //===----------------------------------------------------------------------===//
1763 /// @brief This class represents a truncation of floating point types.
1764 class FPTruncInst : public CastInst {
1765 FPTruncInst(const FPTruncInst &CI)
1766 : CastInst(CI.getType(), FPTrunc, CI.getOperand(0)) {
1769 /// @brief Constructor with insert-before-instruction semantics
1771 Value *S, ///< The value to be truncated
1772 const Type *Ty, ///< The type to truncate to
1773 const std::string &Name = "", ///< A name for the new instruction
1774 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
1777 /// @brief Constructor with insert-before-instruction semantics
1779 Value *S, ///< The value to be truncated
1780 const Type *Ty, ///< The type to truncate to
1781 const std::string &Name, ///< A name for the new instruction
1782 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
1785 /// @brief Clone an identical FPTruncInst
1786 virtual CastInst *clone() const;
1788 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
1789 static inline bool classof(const FPTruncInst *) { return true; }
1790 static inline bool classof(const Instruction *I) {
1791 return I->getOpcode() == FPTrunc;
1793 static inline bool classof(const Value *V) {
1794 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1798 //===----------------------------------------------------------------------===//
1800 //===----------------------------------------------------------------------===//
1802 /// @brief This class represents an extension of floating point types.
1803 class FPExtInst : public CastInst {
1804 FPExtInst(const FPExtInst &CI)
1805 : CastInst(CI.getType(), FPExt, CI.getOperand(0)) {
1808 /// @brief Constructor with insert-before-instruction semantics
1810 Value *S, ///< The value to be extended
1811 const Type *Ty, ///< The type to extend to
1812 const std::string &Name = "", ///< A name for the new instruction
1813 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
1816 /// @brief Constructor with insert-at-end-of-block semantics
1818 Value *S, ///< The value to be extended
1819 const Type *Ty, ///< The type to extend to
1820 const std::string &Name, ///< A name for the new instruction
1821 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
1824 /// @brief Clone an identical FPExtInst
1825 virtual CastInst *clone() const;
1827 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
1828 static inline bool classof(const FPExtInst *) { return true; }
1829 static inline bool classof(const Instruction *I) {
1830 return I->getOpcode() == FPExt;
1832 static inline bool classof(const Value *V) {
1833 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1837 //===----------------------------------------------------------------------===//
1839 //===----------------------------------------------------------------------===//
1841 /// @brief This class represents a cast unsigned integer to floating point.
1842 class UIToFPInst : public CastInst {
1843 UIToFPInst(const UIToFPInst &CI)
1844 : CastInst(CI.getType(), UIToFP, CI.getOperand(0)) {
1847 /// @brief Constructor with insert-before-instruction semantics
1849 Value *S, ///< The value to be converted
1850 const Type *Ty, ///< The type to convert to
1851 const std::string &Name = "", ///< A name for the new instruction
1852 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
1855 /// @brief Constructor with insert-at-end-of-block semantics
1857 Value *S, ///< The value to be converted
1858 const Type *Ty, ///< The type to convert to
1859 const std::string &Name, ///< A name for the new instruction
1860 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
1863 /// @brief Clone an identical UIToFPInst
1864 virtual CastInst *clone() const;
1866 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
1867 static inline bool classof(const UIToFPInst *) { return true; }
1868 static inline bool classof(const Instruction *I) {
1869 return I->getOpcode() == UIToFP;
1871 static inline bool classof(const Value *V) {
1872 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1876 //===----------------------------------------------------------------------===//
1878 //===----------------------------------------------------------------------===//
1880 /// @brief This class represents a cast from signed integer to floating point.
1881 class SIToFPInst : public CastInst {
1882 SIToFPInst(const SIToFPInst &CI)
1883 : CastInst(CI.getType(), SIToFP, CI.getOperand(0)) {
1886 /// @brief Constructor with insert-before-instruction semantics
1888 Value *S, ///< The value to be converted
1889 const Type *Ty, ///< The type to convert to
1890 const std::string &Name = "", ///< A name for the new instruction
1891 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
1894 /// @brief Constructor with insert-at-end-of-block semantics
1896 Value *S, ///< The value to be converted
1897 const Type *Ty, ///< The type to convert to
1898 const std::string &Name, ///< A name for the new instruction
1899 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
1902 /// @brief Clone an identical SIToFPInst
1903 virtual CastInst *clone() const;
1905 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
1906 static inline bool classof(const SIToFPInst *) { return true; }
1907 static inline bool classof(const Instruction *I) {
1908 return I->getOpcode() == SIToFP;
1910 static inline bool classof(const Value *V) {
1911 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1915 //===----------------------------------------------------------------------===//
1917 //===----------------------------------------------------------------------===//
1919 /// @brief This class represents a cast from floating point to unsigned integer
1920 class FPToUIInst : public CastInst {
1921 FPToUIInst(const FPToUIInst &CI)
1922 : CastInst(CI.getType(), FPToUI, CI.getOperand(0)) {
1925 /// @brief Constructor with insert-before-instruction semantics
1927 Value *S, ///< The value to be converted
1928 const Type *Ty, ///< The type to convert to
1929 const std::string &Name = "", ///< A name for the new instruction
1930 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
1933 /// @brief Constructor with insert-at-end-of-block semantics
1935 Value *S, ///< The value to be converted
1936 const Type *Ty, ///< The type to convert to
1937 const std::string &Name, ///< A name for the new instruction
1938 BasicBlock *InsertAtEnd ///< Where to insert the new instruction
1941 /// @brief Clone an identical FPToUIInst
1942 virtual CastInst *clone() const;
1944 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
1945 static inline bool classof(const FPToUIInst *) { return true; }
1946 static inline bool classof(const Instruction *I) {
1947 return I->getOpcode() == FPToUI;
1949 static inline bool classof(const Value *V) {
1950 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1954 //===----------------------------------------------------------------------===//
1956 //===----------------------------------------------------------------------===//
1958 /// @brief This class represents a cast from floating point to signed integer.
1959 class FPToSIInst : public CastInst {
1960 FPToSIInst(const FPToSIInst &CI)
1961 : CastInst(CI.getType(), FPToSI, CI.getOperand(0)) {
1964 /// @brief Constructor with insert-before-instruction semantics
1966 Value *S, ///< The value to be converted
1967 const Type *Ty, ///< The type to convert to
1968 const std::string &Name = "", ///< A name for the new instruction
1969 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
1972 /// @brief Constructor with insert-at-end-of-block semantics
1974 Value *S, ///< The value to be converted
1975 const Type *Ty, ///< The type to convert to
1976 const std::string &Name, ///< A name for the new instruction
1977 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
1980 /// @brief Clone an identical FPToSIInst
1981 virtual CastInst *clone() const;
1983 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
1984 static inline bool classof(const FPToSIInst *) { return true; }
1985 static inline bool classof(const Instruction *I) {
1986 return I->getOpcode() == FPToSI;
1988 static inline bool classof(const Value *V) {
1989 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1993 //===----------------------------------------------------------------------===//
1994 // IntToPtrInst Class
1995 //===----------------------------------------------------------------------===//
1997 /// @brief This class represents a cast from an integer to a pointer.
1998 class IntToPtrInst : public CastInst {
1999 IntToPtrInst(const IntToPtrInst &CI)
2000 : CastInst(CI.getType(), IntToPtr, CI.getOperand(0)) {
2003 /// @brief Constructor with insert-before-instruction semantics
2005 Value *S, ///< The value to be converted
2006 const Type *Ty, ///< The type to convert to
2007 const std::string &Name = "", ///< A name for the new instruction
2008 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
2011 /// @brief Constructor with insert-at-end-of-block semantics
2013 Value *S, ///< The value to be converted
2014 const Type *Ty, ///< The type to convert to
2015 const std::string &Name, ///< A name for the new instruction
2016 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
2019 /// @brief Clone an identical IntToPtrInst
2020 virtual CastInst *clone() const;
2022 // Methods for support type inquiry through isa, cast, and dyn_cast:
2023 static inline bool classof(const IntToPtrInst *) { return true; }
2024 static inline bool classof(const Instruction *I) {
2025 return I->getOpcode() == IntToPtr;
2027 static inline bool classof(const Value *V) {
2028 return isa<Instruction>(V) && classof(cast<Instruction>(V));
2032 //===----------------------------------------------------------------------===//
2033 // PtrToIntInst Class
2034 //===----------------------------------------------------------------------===//
2036 /// @brief This class represents a cast from a pointer to an integer
2037 class PtrToIntInst : public CastInst {
2038 PtrToIntInst(const PtrToIntInst &CI)
2039 : CastInst(CI.getType(), PtrToInt, CI.getOperand(0)) {
2042 /// @brief Constructor with insert-before-instruction semantics
2044 Value *S, ///< The value to be converted
2045 const Type *Ty, ///< The type to convert to
2046 const std::string &Name = "", ///< A name for the new instruction
2047 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
2050 /// @brief Constructor with insert-at-end-of-block semantics
2052 Value *S, ///< The value to be converted
2053 const Type *Ty, ///< The type to convert to
2054 const std::string &Name, ///< A name for the new instruction
2055 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
2058 /// @brief Clone an identical PtrToIntInst
2059 virtual CastInst *clone() const;
2061 // Methods for support type inquiry through isa, cast, and dyn_cast:
2062 static inline bool classof(const PtrToIntInst *) { return true; }
2063 static inline bool classof(const Instruction *I) {
2064 return I->getOpcode() == PtrToInt;
2066 static inline bool classof(const Value *V) {
2067 return isa<Instruction>(V) && classof(cast<Instruction>(V));
2071 //===----------------------------------------------------------------------===//
2072 // BitCastInst Class
2073 //===----------------------------------------------------------------------===//
2075 /// @brief This class represents a no-op cast from one type to another.
2076 class BitCastInst : public CastInst {
2077 BitCastInst(const BitCastInst &CI)
2078 : CastInst(CI.getType(), BitCast, CI.getOperand(0)) {
2081 /// @brief Constructor with insert-before-instruction semantics
2083 Value *S, ///< The value to be casted
2084 const Type *Ty, ///< The type to casted to
2085 const std::string &Name = "", ///< A name for the new instruction
2086 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
2089 /// @brief Constructor with insert-at-end-of-block semantics
2091 Value *S, ///< The value to be casted
2092 const Type *Ty, ///< The type to casted to
2093 const std::string &Name, ///< A name for the new instruction
2094 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
2097 /// @brief Clone an identical BitCastInst
2098 virtual CastInst *clone() const;
2100 // Methods for support type inquiry through isa, cast, and dyn_cast:
2101 static inline bool classof(const BitCastInst *) { return true; }
2102 static inline bool classof(const Instruction *I) {
2103 return I->getOpcode() == BitCast;
2105 static inline bool classof(const Value *V) {
2106 return isa<Instruction>(V) && classof(cast<Instruction>(V));
2110 } // End llvm namespace