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 // Methods for support type inquiry through isa, cast, and dyn_cast:
196 static inline bool classof(const FreeInst *) { return true; }
197 static inline bool classof(const Instruction *I) {
198 return (I->getOpcode() == Instruction::Free);
200 static inline bool classof(const Value *V) {
201 return isa<Instruction>(V) && classof(cast<Instruction>(V));
206 //===----------------------------------------------------------------------===//
208 //===----------------------------------------------------------------------===//
210 /// LoadInst - an instruction for reading from memory. This uses the
211 /// SubclassData field in Value to store whether or not the load is volatile.
213 class LoadInst : public UnaryInstruction {
215 LoadInst(const LoadInst &LI)
216 : UnaryInstruction(LI.getType(), Load, LI.getOperand(0)) {
217 setVolatile(LI.isVolatile());
218 setAlignment(LI.getAlignment());
226 LoadInst(Value *Ptr, const std::string &Name, Instruction *InsertBefore);
227 LoadInst(Value *Ptr, const std::string &Name, BasicBlock *InsertAtEnd);
228 LoadInst(Value *Ptr, const std::string &Name, bool isVolatile = false,
229 Instruction *InsertBefore = 0);
230 LoadInst(Value *Ptr, const std::string &Name, bool isVolatile, unsigned Align,
231 Instruction *InsertBefore = 0);
232 LoadInst(Value *Ptr, const std::string &Name, bool isVolatile,
233 BasicBlock *InsertAtEnd);
235 LoadInst(Value *Ptr, const char *Name, Instruction *InsertBefore);
236 LoadInst(Value *Ptr, const char *Name, BasicBlock *InsertAtEnd);
237 explicit LoadInst(Value *Ptr, const char *Name = 0, bool isVolatile = false,
238 Instruction *InsertBefore = 0);
239 LoadInst(Value *Ptr, const char *Name, bool isVolatile,
240 BasicBlock *InsertAtEnd);
242 /// isVolatile - Return true if this is a load from a volatile memory
245 bool isVolatile() const { return SubclassData & 1; }
247 /// setVolatile - Specify whether this is a volatile load or not.
249 void setVolatile(bool V) {
250 SubclassData = (SubclassData & ~1) | ((V) ? 1 : 0);
253 virtual LoadInst *clone() const;
255 /// getAlignment - Return the alignment of the access that is being performed
257 unsigned getAlignment() const {
258 signed Log2AlignVal = ((SubclassData>>1)-1);
259 return ((Log2AlignVal < 0) ? 0 : 1<<Log2AlignVal);
262 void setAlignment(unsigned Align);
264 Value *getPointerOperand() { return getOperand(0); }
265 const Value *getPointerOperand() const { return getOperand(0); }
266 static unsigned getPointerOperandIndex() { return 0U; }
268 // Methods for support type inquiry through isa, cast, and dyn_cast:
269 static inline bool classof(const LoadInst *) { return true; }
270 static inline bool classof(const Instruction *I) {
271 return I->getOpcode() == Instruction::Load;
273 static inline bool classof(const Value *V) {
274 return isa<Instruction>(V) && classof(cast<Instruction>(V));
279 //===----------------------------------------------------------------------===//
281 //===----------------------------------------------------------------------===//
283 /// StoreInst - an instruction for storing to memory
285 class StoreInst : public Instruction {
288 StoreInst(const StoreInst &SI) : Instruction(SI.getType(), Store, Ops, 2) {
289 Ops[0].init(SI.Ops[0], this);
290 Ops[1].init(SI.Ops[1], this);
291 setVolatile(SI.isVolatile());
292 setAlignment(SI.getAlignment());
300 StoreInst(Value *Val, Value *Ptr, Instruction *InsertBefore);
301 StoreInst(Value *Val, Value *Ptr, BasicBlock *InsertAtEnd);
302 StoreInst(Value *Val, Value *Ptr, bool isVolatile = false,
303 Instruction *InsertBefore = 0);
304 StoreInst(Value *Val, Value *Ptr, bool isVolatile,
305 unsigned Align, Instruction *InsertBefore = 0);
306 StoreInst(Value *Val, Value *Ptr, bool isVolatile, BasicBlock *InsertAtEnd);
309 /// isVolatile - Return true if this is a load from a volatile memory
312 bool isVolatile() const { return SubclassData & 1; }
314 /// setVolatile - Specify whether this is a volatile load or not.
316 void setVolatile(bool V) {
317 SubclassData = (SubclassData & ~1) | ((V) ? 1 : 0);
320 /// Transparently provide more efficient getOperand methods.
321 Value *getOperand(unsigned i) const {
322 assert(i < 2 && "getOperand() out of range!");
325 void setOperand(unsigned i, Value *Val) {
326 assert(i < 2 && "setOperand() out of range!");
329 unsigned getNumOperands() const { return 2; }
331 /// getAlignment - Return the alignment of the access that is being performed
333 unsigned getAlignment() const {
334 signed Log2AlignVal = ((SubclassData>>1)-1);
335 return ((Log2AlignVal < 0) ? 0 : 1<<Log2AlignVal);
338 void setAlignment(unsigned Align);
340 virtual StoreInst *clone() const;
342 Value *getPointerOperand() { return getOperand(1); }
343 const Value *getPointerOperand() const { return getOperand(1); }
344 static unsigned getPointerOperandIndex() { return 1U; }
346 // Methods for support type inquiry through isa, cast, and dyn_cast:
347 static inline bool classof(const StoreInst *) { return true; }
348 static inline bool classof(const Instruction *I) {
349 return I->getOpcode() == Instruction::Store;
351 static inline bool classof(const Value *V) {
352 return isa<Instruction>(V) && classof(cast<Instruction>(V));
357 //===----------------------------------------------------------------------===//
358 // GetElementPtrInst Class
359 //===----------------------------------------------------------------------===//
361 /// GetElementPtrInst - an instruction for type-safe pointer arithmetic to
362 /// access elements of arrays and structs
364 class GetElementPtrInst : public Instruction {
365 GetElementPtrInst(const GetElementPtrInst &GEPI)
366 : Instruction(reinterpret_cast<const Type*>(GEPI.getType()), GetElementPtr,
367 0, GEPI.getNumOperands()) {
368 Use *OL = OperandList = new Use[NumOperands];
369 Use *GEPIOL = GEPI.OperandList;
370 for (unsigned i = 0, E = NumOperands; i != E; ++i)
371 OL[i].init(GEPIOL[i], this);
373 void init(Value *Ptr, Value* const *Idx, unsigned NumIdx);
374 void init(Value *Ptr, Value *Idx0, Value *Idx1);
375 void init(Value *Ptr, Value *Idx);
377 /// Constructors - Create a getelementptr instruction with a base pointer an
378 /// list of indices. The first ctor can optionally insert before an existing
379 /// instruction, the second appends the new instruction to the specified
381 GetElementPtrInst(Value *Ptr, Value* const *Idx, unsigned NumIdx,
382 const std::string &Name = "", Instruction *InsertBefore =0);
383 GetElementPtrInst(Value *Ptr, Value* const *Idx, unsigned NumIdx,
384 const std::string &Name, BasicBlock *InsertAtEnd);
386 /// Constructors - These two constructors are convenience methods because one
387 /// and two index getelementptr instructions are so common.
388 GetElementPtrInst(Value *Ptr, Value *Idx,
389 const std::string &Name = "", Instruction *InsertBefore =0);
390 GetElementPtrInst(Value *Ptr, Value *Idx,
391 const std::string &Name, BasicBlock *InsertAtEnd);
392 GetElementPtrInst(Value *Ptr, Value *Idx0, Value *Idx1,
393 const std::string &Name = "", Instruction *InsertBefore =0);
394 GetElementPtrInst(Value *Ptr, Value *Idx0, Value *Idx1,
395 const std::string &Name, BasicBlock *InsertAtEnd);
396 ~GetElementPtrInst();
398 virtual GetElementPtrInst *clone() const;
400 // getType - Overload to return most specific pointer type...
401 inline const PointerType *getType() const {
402 return reinterpret_cast<const PointerType*>(Instruction::getType());
405 /// getIndexedType - Returns the type of the element that would be loaded with
406 /// a load instruction with the specified parameters.
408 /// A null type is returned if the indices are invalid for the specified
411 static const Type *getIndexedType(const Type *Ptr,
412 Value* const *Idx, unsigned NumIdx,
413 bool AllowStructLeaf = false);
415 static const Type *getIndexedType(const Type *Ptr, Value *Idx0, Value *Idx1,
416 bool AllowStructLeaf = false);
417 static const Type *getIndexedType(const Type *Ptr, Value *Idx);
419 inline op_iterator idx_begin() { return op_begin()+1; }
420 inline const_op_iterator idx_begin() const { return op_begin()+1; }
421 inline op_iterator idx_end() { return op_end(); }
422 inline const_op_iterator idx_end() const { return op_end(); }
424 Value *getPointerOperand() {
425 return getOperand(0);
427 const Value *getPointerOperand() const {
428 return getOperand(0);
430 static unsigned getPointerOperandIndex() {
431 return 0U; // get index for modifying correct operand
434 inline unsigned getNumIndices() const { // Note: always non-negative
435 return getNumOperands() - 1;
438 inline bool hasIndices() const {
439 return getNumOperands() > 1;
442 /// hasAllZeroIndices - Return true if all of the indices of this GEP are
443 /// zeros. If so, the result pointer and the first operand have the same
444 /// value, just potentially different types.
445 bool hasAllZeroIndices() const;
447 // Methods for support type inquiry through isa, cast, and dyn_cast:
448 static inline bool classof(const GetElementPtrInst *) { return true; }
449 static inline bool classof(const Instruction *I) {
450 return (I->getOpcode() == Instruction::GetElementPtr);
452 static inline bool classof(const Value *V) {
453 return isa<Instruction>(V) && classof(cast<Instruction>(V));
457 //===----------------------------------------------------------------------===//
459 //===----------------------------------------------------------------------===//
461 /// This instruction compares its operands according to the predicate given
462 /// to the constructor. It only operates on integers, pointers, or packed
463 /// vectors of integrals. The two operands must be the same type.
464 /// @brief Represent an integer comparison operator.
465 class ICmpInst: public CmpInst {
467 /// This enumeration lists the possible predicates for the ICmpInst. The
468 /// values in the range 0-31 are reserved for FCmpInst while values in the
469 /// range 32-64 are reserved for ICmpInst. This is necessary to ensure the
470 /// predicate values are not overlapping between the classes.
472 ICMP_EQ = 32, ///< equal
473 ICMP_NE = 33, ///< not equal
474 ICMP_UGT = 34, ///< unsigned greater than
475 ICMP_UGE = 35, ///< unsigned greater or equal
476 ICMP_ULT = 36, ///< unsigned less than
477 ICMP_ULE = 37, ///< unsigned less or equal
478 ICMP_SGT = 38, ///< signed greater than
479 ICMP_SGE = 39, ///< signed greater or equal
480 ICMP_SLT = 40, ///< signed less than
481 ICMP_SLE = 41, ///< signed less or equal
482 FIRST_ICMP_PREDICATE = ICMP_EQ,
483 LAST_ICMP_PREDICATE = ICMP_SLE,
484 BAD_ICMP_PREDICATE = ICMP_SLE + 1
487 /// @brief Constructor with insert-before-instruction semantics.
489 Predicate pred, ///< The predicate to use for the comparison
490 Value *LHS, ///< The left-hand-side of the expression
491 Value *RHS, ///< The right-hand-side of the expression
492 const std::string &Name = "", ///< Name of the instruction
493 Instruction *InsertBefore = 0 ///< Where to insert
494 ) : CmpInst(Instruction::ICmp, pred, LHS, RHS, Name, InsertBefore) {
497 /// @brief Constructor with insert-at-block-end semantics.
499 Predicate pred, ///< The predicate to use for the comparison
500 Value *LHS, ///< The left-hand-side of the expression
501 Value *RHS, ///< The right-hand-side of the expression
502 const std::string &Name, ///< Name of the instruction
503 BasicBlock *InsertAtEnd ///< Block to insert into.
504 ) : CmpInst(Instruction::ICmp, pred, LHS, RHS, Name, InsertAtEnd) {
507 /// @brief Return the predicate for this instruction.
508 Predicate getPredicate() const { return Predicate(SubclassData); }
510 /// @brief Set the predicate for this instruction to the specified value.
511 void setPredicate(Predicate P) { SubclassData = P; }
513 /// For example, EQ -> NE, UGT -> ULE, SLT -> SGE, etc.
514 /// @returns the inverse predicate for the instruction's current predicate.
515 /// @brief Return the inverse of the instruction's predicate.
516 Predicate getInversePredicate() const {
517 return getInversePredicate(getPredicate());
520 /// For example, EQ -> NE, UGT -> ULE, SLT -> SGE, etc.
521 /// @returns the inverse predicate for predicate provided in \p pred.
522 /// @brief Return the inverse of a given predicate
523 static Predicate getInversePredicate(Predicate pred);
525 /// For example, EQ->EQ, SLE->SGE, ULT->UGT, etc.
526 /// @returns the predicate that would be the result of exchanging the two
527 /// operands of the ICmpInst instruction without changing the result
529 /// @brief Return the predicate as if the operands were swapped
530 Predicate getSwappedPredicate() const {
531 return getSwappedPredicate(getPredicate());
534 /// This is a static version that you can use without an instruction
536 /// @brief Return the predicate as if the operands were swapped.
537 static Predicate getSwappedPredicate(Predicate pred);
539 /// For example, EQ->EQ, SLE->SLE, UGT->SGT, etc.
540 /// @returns the predicate that would be the result if the operand were
541 /// regarded as signed.
542 /// @brief Return the signed version of the predicate
543 Predicate getSignedPredicate() const {
544 return getSignedPredicate(getPredicate());
547 /// This is a static version that you can use without an instruction.
548 /// @brief Return the signed version of the predicate.
549 static Predicate getSignedPredicate(Predicate pred);
551 /// This also tests for commutativity. If isEquality() returns true then
552 /// the predicate is also commutative.
553 /// @returns true if the predicate of this instruction is EQ or NE.
554 /// @brief Determine if this is an equality predicate.
555 bool isEquality() const {
556 return SubclassData == ICMP_EQ || SubclassData == ICMP_NE;
559 /// @returns true if the predicate of this ICmpInst is commutative
560 /// @brief Determine if this relation is commutative.
561 bool isCommutative() const { return isEquality(); }
563 /// @returns true if the predicate is relational (not EQ or NE).
564 /// @brief Determine if this a relational predicate.
565 bool isRelational() const {
566 return !isEquality();
569 /// @returns true if the predicate of this ICmpInst is signed, false otherwise
570 /// @brief Determine if this instruction's predicate is signed.
571 bool isSignedPredicate() { return isSignedPredicate(getPredicate()); }
573 /// @returns true if the predicate provided is signed, false otherwise
574 /// @brief Determine if the predicate is signed.
575 static bool isSignedPredicate(Predicate pred);
577 /// Initialize a set of values that all satisfy the predicate with C.
578 /// @brief Make a ConstantRange for a relation with a constant value.
579 static ConstantRange makeConstantRange(Predicate pred, const APInt &C);
581 /// Exchange the two operands to this instruction in such a way that it does
582 /// not modify the semantics of the instruction. The predicate value may be
583 /// changed to retain the same result if the predicate is order dependent
585 /// @brief Swap operands and adjust predicate.
586 void swapOperands() {
587 SubclassData = getSwappedPredicate();
588 std::swap(Ops[0], Ops[1]);
591 // Methods for support type inquiry through isa, cast, and dyn_cast:
592 static inline bool classof(const ICmpInst *) { return true; }
593 static inline bool classof(const Instruction *I) {
594 return I->getOpcode() == Instruction::ICmp;
596 static inline bool classof(const Value *V) {
597 return isa<Instruction>(V) && classof(cast<Instruction>(V));
601 //===----------------------------------------------------------------------===//
603 //===----------------------------------------------------------------------===//
605 /// This instruction compares its operands according to the predicate given
606 /// to the constructor. It only operates on floating point values or packed
607 /// vectors of floating point values. The operands must be identical types.
608 /// @brief Represents a floating point comparison operator.
609 class FCmpInst: public CmpInst {
611 /// This enumeration lists the possible predicates for the FCmpInst. Values
612 /// in the range 0-31 are reserved for FCmpInst.
614 // Opcode U L G E Intuitive operation
615 FCMP_FALSE = 0, ///< 0 0 0 0 Always false (always folded)
616 FCMP_OEQ = 1, ///< 0 0 0 1 True if ordered and equal
617 FCMP_OGT = 2, ///< 0 0 1 0 True if ordered and greater than
618 FCMP_OGE = 3, ///< 0 0 1 1 True if ordered and greater than or equal
619 FCMP_OLT = 4, ///< 0 1 0 0 True if ordered and less than
620 FCMP_OLE = 5, ///< 0 1 0 1 True if ordered and less than or equal
621 FCMP_ONE = 6, ///< 0 1 1 0 True if ordered and operands are unequal
622 FCMP_ORD = 7, ///< 0 1 1 1 True if ordered (no nans)
623 FCMP_UNO = 8, ///< 1 0 0 0 True if unordered: isnan(X) | isnan(Y)
624 FCMP_UEQ = 9, ///< 1 0 0 1 True if unordered or equal
625 FCMP_UGT =10, ///< 1 0 1 0 True if unordered or greater than
626 FCMP_UGE =11, ///< 1 0 1 1 True if unordered, greater than, or equal
627 FCMP_ULT =12, ///< 1 1 0 0 True if unordered or less than
628 FCMP_ULE =13, ///< 1 1 0 1 True if unordered, less than, or equal
629 FCMP_UNE =14, ///< 1 1 1 0 True if unordered or not equal
630 FCMP_TRUE =15, ///< 1 1 1 1 Always true (always folded)
631 FIRST_FCMP_PREDICATE = FCMP_FALSE,
632 LAST_FCMP_PREDICATE = FCMP_TRUE,
633 BAD_FCMP_PREDICATE = FCMP_TRUE + 1
636 /// @brief Constructor with insert-before-instruction semantics.
638 Predicate pred, ///< The predicate to use for the comparison
639 Value *LHS, ///< The left-hand-side of the expression
640 Value *RHS, ///< The right-hand-side of the expression
641 const std::string &Name = "", ///< Name of the instruction
642 Instruction *InsertBefore = 0 ///< Where to insert
643 ) : CmpInst(Instruction::FCmp, pred, LHS, RHS, Name, InsertBefore) {
646 /// @brief Constructor with insert-at-block-end semantics.
648 Predicate pred, ///< The predicate to use for the comparison
649 Value *LHS, ///< The left-hand-side of the expression
650 Value *RHS, ///< The right-hand-side of the expression
651 const std::string &Name, ///< Name of the instruction
652 BasicBlock *InsertAtEnd ///< Block to insert into.
653 ) : CmpInst(Instruction::FCmp, pred, LHS, RHS, Name, InsertAtEnd) {
656 /// @brief Return the predicate for this instruction.
657 Predicate getPredicate() const { return Predicate(SubclassData); }
659 /// @brief Set the predicate for this instruction to the specified value.
660 void setPredicate(Predicate P) { SubclassData = P; }
662 /// For example, OEQ -> UNE, UGT -> OLE, OLT -> UGE, etc.
663 /// @returns the inverse predicate for the instructions current predicate.
664 /// @brief Return the inverse of the predicate
665 Predicate getInversePredicate() const {
666 return getInversePredicate(getPredicate());
669 /// For example, OEQ -> UNE, UGT -> OLE, OLT -> UGE, etc.
670 /// @returns the inverse predicate for \p pred.
671 /// @brief Return the inverse of a given predicate
672 static Predicate getInversePredicate(Predicate pred);
674 /// For example, OEQ->OEQ, ULE->UGE, OLT->OGT, etc.
675 /// @returns the predicate that would be the result of exchanging the two
676 /// operands of the ICmpInst instruction without changing the result
678 /// @brief Return the predicate as if the operands were swapped
679 Predicate getSwappedPredicate() const {
680 return getSwappedPredicate(getPredicate());
683 /// This is a static version that you can use without an instruction
685 /// @brief Return the predicate as if the operands were swapped.
686 static Predicate getSwappedPredicate(Predicate Opcode);
688 /// This also tests for commutativity. If isEquality() returns true then
689 /// the predicate is also commutative. Only the equality predicates are
691 /// @returns true if the predicate of this instruction is EQ or NE.
692 /// @brief Determine if this is an equality predicate.
693 bool isEquality() const {
694 return SubclassData == FCMP_OEQ || SubclassData == FCMP_ONE ||
695 SubclassData == FCMP_UEQ || SubclassData == FCMP_UNE;
697 bool isCommutative() const { return isEquality(); }
699 /// @returns true if the predicate is relational (not EQ or NE).
700 /// @brief Determine if this a relational predicate.
701 bool isRelational() const { return !isEquality(); }
703 /// Exchange the two operands to this instruction in such a way that it does
704 /// not modify the semantics of the instruction. The predicate value may be
705 /// changed to retain the same result if the predicate is order dependent
707 /// @brief Swap operands and adjust predicate.
708 void swapOperands() {
709 SubclassData = getSwappedPredicate();
710 std::swap(Ops[0], Ops[1]);
713 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
714 static inline bool classof(const FCmpInst *) { return true; }
715 static inline bool classof(const Instruction *I) {
716 return I->getOpcode() == Instruction::FCmp;
718 static inline bool classof(const Value *V) {
719 return isa<Instruction>(V) && classof(cast<Instruction>(V));
723 //===----------------------------------------------------------------------===//
725 //===----------------------------------------------------------------------===//
727 /// CallInst - This class represents a function call, abstracting a target
728 /// machine's calling convention. This class uses low bit of the SubClassData
729 /// field to indicate whether or not this is a tail call. The rest of the bits
730 /// hold the calling convention of the call.
732 class CallInst : public Instruction {
733 ParamAttrsList *ParamAttrs; ///< parameter attributes for call
734 CallInst(const CallInst &CI);
735 void init(Value *Func, Value* const *Params, unsigned NumParams);
736 void init(Value *Func, Value *Actual1, Value *Actual2);
737 void init(Value *Func, Value *Actual);
738 void init(Value *Func);
741 CallInst(Value *F, Value* const *Args, unsigned NumArgs,
742 const std::string &Name = "", Instruction *InsertBefore = 0);
743 CallInst(Value *F, Value *const *Args, unsigned NumArgs,
744 const std::string &Name, BasicBlock *InsertAtEnd);
746 // Alternate CallInst ctors w/ two actuals, w/ one actual and no
747 // actuals, respectively.
748 CallInst(Value *F, Value *Actual1, Value *Actual2,
749 const std::string& Name = "", Instruction *InsertBefore = 0);
750 CallInst(Value *F, Value *Actual1, Value *Actual2,
751 const std::string& Name, BasicBlock *InsertAtEnd);
752 CallInst(Value *F, Value *Actual, const std::string& Name = "",
753 Instruction *InsertBefore = 0);
754 CallInst(Value *F, Value *Actual, const std::string& Name,
755 BasicBlock *InsertAtEnd);
756 explicit CallInst(Value *F, const std::string &Name = "",
757 Instruction *InsertBefore = 0);
758 CallInst(Value *F, const std::string &Name, BasicBlock *InsertAtEnd);
761 virtual CallInst *clone() const;
763 bool isTailCall() const { return SubclassData & 1; }
764 void setTailCall(bool isTailCall = true) {
765 SubclassData = (SubclassData & ~1) | unsigned(isTailCall);
768 /// getCallingConv/setCallingConv - Get or set the calling convention of this
770 unsigned getCallingConv() const { return SubclassData >> 1; }
771 void setCallingConv(unsigned CC) {
772 SubclassData = (SubclassData & 1) | (CC << 1);
775 /// Obtains a pointer to the ParamAttrsList object which holds the
776 /// parameter attributes information, if any.
777 /// @returns 0 if no attributes have been set.
778 /// @brief Get the parameter attributes.
779 ParamAttrsList *getParamAttrs() const { return ParamAttrs; }
781 /// Sets the parameter attributes for this CallInst. To construct a
782 /// ParamAttrsList, see ParameterAttributes.h
783 /// @brief Set the parameter attributes.
784 void setParamAttrs(ParamAttrsList *attrs);
786 /// getCalledFunction - Return the function being called by this instruction
787 /// if it is a direct call. If it is a call through a function pointer,
789 Function *getCalledFunction() const {
790 return static_cast<Function*>(dyn_cast<Function>(getOperand(0)));
793 /// getCalledValue - Get a pointer to the function that is invoked by this
795 inline const Value *getCalledValue() const { return getOperand(0); }
796 inline Value *getCalledValue() { return getOperand(0); }
798 // Methods for support type inquiry through isa, cast, and dyn_cast:
799 static inline bool classof(const CallInst *) { return true; }
800 static inline bool classof(const Instruction *I) {
801 return I->getOpcode() == Instruction::Call;
803 static inline bool classof(const Value *V) {
804 return isa<Instruction>(V) && classof(cast<Instruction>(V));
808 //===----------------------------------------------------------------------===//
810 //===----------------------------------------------------------------------===//
812 /// SelectInst - This class represents the LLVM 'select' instruction.
814 class SelectInst : public Instruction {
817 void init(Value *C, Value *S1, Value *S2) {
818 Ops[0].init(C, this);
819 Ops[1].init(S1, this);
820 Ops[2].init(S2, this);
823 SelectInst(const SelectInst &SI)
824 : Instruction(SI.getType(), SI.getOpcode(), Ops, 3) {
825 init(SI.Ops[0], SI.Ops[1], SI.Ops[2]);
828 SelectInst(Value *C, Value *S1, Value *S2, const std::string &Name = "",
829 Instruction *InsertBefore = 0)
830 : Instruction(S1->getType(), Instruction::Select, Ops, 3, InsertBefore) {
834 SelectInst(Value *C, Value *S1, Value *S2, const std::string &Name,
835 BasicBlock *InsertAtEnd)
836 : Instruction(S1->getType(), Instruction::Select, Ops, 3, InsertAtEnd) {
841 Value *getCondition() const { return Ops[0]; }
842 Value *getTrueValue() const { return Ops[1]; }
843 Value *getFalseValue() const { return Ops[2]; }
845 /// Transparently provide more efficient getOperand methods.
846 Value *getOperand(unsigned i) const {
847 assert(i < 3 && "getOperand() out of range!");
850 void setOperand(unsigned i, Value *Val) {
851 assert(i < 3 && "setOperand() out of range!");
854 unsigned getNumOperands() const { return 3; }
856 OtherOps getOpcode() const {
857 return static_cast<OtherOps>(Instruction::getOpcode());
860 virtual SelectInst *clone() const;
862 // Methods for support type inquiry through isa, cast, and dyn_cast:
863 static inline bool classof(const SelectInst *) { return true; }
864 static inline bool classof(const Instruction *I) {
865 return I->getOpcode() == Instruction::Select;
867 static inline bool classof(const Value *V) {
868 return isa<Instruction>(V) && classof(cast<Instruction>(V));
872 //===----------------------------------------------------------------------===//
874 //===----------------------------------------------------------------------===//
876 /// VAArgInst - This class represents the va_arg llvm instruction, which returns
877 /// an argument of the specified type given a va_list and increments that list
879 class VAArgInst : public UnaryInstruction {
880 VAArgInst(const VAArgInst &VAA)
881 : UnaryInstruction(VAA.getType(), VAArg, VAA.getOperand(0)) {}
883 VAArgInst(Value *List, const Type *Ty, const std::string &Name = "",
884 Instruction *InsertBefore = 0)
885 : UnaryInstruction(Ty, VAArg, List, InsertBefore) {
888 VAArgInst(Value *List, const Type *Ty, const std::string &Name,
889 BasicBlock *InsertAtEnd)
890 : UnaryInstruction(Ty, VAArg, List, InsertAtEnd) {
894 virtual VAArgInst *clone() const;
896 // Methods for support type inquiry through isa, cast, and dyn_cast:
897 static inline bool classof(const VAArgInst *) { return true; }
898 static inline bool classof(const Instruction *I) {
899 return I->getOpcode() == VAArg;
901 static inline bool classof(const Value *V) {
902 return isa<Instruction>(V) && classof(cast<Instruction>(V));
906 //===----------------------------------------------------------------------===//
907 // ExtractElementInst Class
908 //===----------------------------------------------------------------------===//
910 /// ExtractElementInst - This instruction extracts a single (scalar)
911 /// element from a VectorType value
913 class ExtractElementInst : public Instruction {
915 ExtractElementInst(const ExtractElementInst &EE) :
916 Instruction(EE.getType(), ExtractElement, Ops, 2) {
917 Ops[0].init(EE.Ops[0], this);
918 Ops[1].init(EE.Ops[1], this);
922 ExtractElementInst(Value *Vec, Value *Idx, const std::string &Name = "",
923 Instruction *InsertBefore = 0);
924 ExtractElementInst(Value *Vec, unsigned Idx, const std::string &Name = "",
925 Instruction *InsertBefore = 0);
926 ExtractElementInst(Value *Vec, Value *Idx, const std::string &Name,
927 BasicBlock *InsertAtEnd);
928 ExtractElementInst(Value *Vec, unsigned Idx, const std::string &Name,
929 BasicBlock *InsertAtEnd);
931 /// isValidOperands - Return true if an extractelement instruction can be
932 /// formed with the specified operands.
933 static bool isValidOperands(const Value *Vec, const Value *Idx);
935 virtual ExtractElementInst *clone() const;
937 /// Transparently provide more efficient getOperand methods.
938 Value *getOperand(unsigned i) const {
939 assert(i < 2 && "getOperand() out of range!");
942 void setOperand(unsigned i, Value *Val) {
943 assert(i < 2 && "setOperand() out of range!");
946 unsigned getNumOperands() const { return 2; }
948 // Methods for support type inquiry through isa, cast, and dyn_cast:
949 static inline bool classof(const ExtractElementInst *) { return true; }
950 static inline bool classof(const Instruction *I) {
951 return I->getOpcode() == Instruction::ExtractElement;
953 static inline bool classof(const Value *V) {
954 return isa<Instruction>(V) && classof(cast<Instruction>(V));
958 //===----------------------------------------------------------------------===//
959 // InsertElementInst Class
960 //===----------------------------------------------------------------------===//
962 /// InsertElementInst - This instruction inserts a single (scalar)
963 /// element into a VectorType value
965 class InsertElementInst : public Instruction {
967 InsertElementInst(const InsertElementInst &IE);
969 InsertElementInst(Value *Vec, Value *NewElt, Value *Idx,
970 const std::string &Name = "",Instruction *InsertBefore = 0);
971 InsertElementInst(Value *Vec, Value *NewElt, unsigned Idx,
972 const std::string &Name = "",Instruction *InsertBefore = 0);
973 InsertElementInst(Value *Vec, Value *NewElt, Value *Idx,
974 const std::string &Name, BasicBlock *InsertAtEnd);
975 InsertElementInst(Value *Vec, Value *NewElt, unsigned Idx,
976 const std::string &Name, BasicBlock *InsertAtEnd);
978 /// isValidOperands - Return true if an insertelement instruction can be
979 /// formed with the specified operands.
980 static bool isValidOperands(const Value *Vec, const Value *NewElt,
983 virtual InsertElementInst *clone() const;
985 /// getType - Overload to return most specific vector type.
987 inline const VectorType *getType() const {
988 return reinterpret_cast<const VectorType*>(Instruction::getType());
991 /// Transparently provide more efficient getOperand methods.
992 Value *getOperand(unsigned i) const {
993 assert(i < 3 && "getOperand() out of range!");
996 void setOperand(unsigned i, Value *Val) {
997 assert(i < 3 && "setOperand() out of range!");
1000 unsigned getNumOperands() const { return 3; }
1002 // Methods for support type inquiry through isa, cast, and dyn_cast:
1003 static inline bool classof(const InsertElementInst *) { return true; }
1004 static inline bool classof(const Instruction *I) {
1005 return I->getOpcode() == Instruction::InsertElement;
1007 static inline bool classof(const Value *V) {
1008 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1012 //===----------------------------------------------------------------------===//
1013 // ShuffleVectorInst Class
1014 //===----------------------------------------------------------------------===//
1016 /// ShuffleVectorInst - This instruction constructs a fixed permutation of two
1019 class ShuffleVectorInst : public Instruction {
1021 ShuffleVectorInst(const ShuffleVectorInst &IE);
1023 ShuffleVectorInst(Value *V1, Value *V2, Value *Mask,
1024 const std::string &Name = "", Instruction *InsertBefor = 0);
1025 ShuffleVectorInst(Value *V1, Value *V2, Value *Mask,
1026 const std::string &Name, BasicBlock *InsertAtEnd);
1028 /// isValidOperands - Return true if a shufflevector instruction can be
1029 /// formed with the specified operands.
1030 static bool isValidOperands(const Value *V1, const Value *V2,
1033 virtual ShuffleVectorInst *clone() const;
1035 /// getType - Overload to return most specific vector type.
1037 inline const VectorType *getType() const {
1038 return reinterpret_cast<const VectorType*>(Instruction::getType());
1041 /// Transparently provide more efficient getOperand methods.
1042 Value *getOperand(unsigned i) const {
1043 assert(i < 3 && "getOperand() out of range!");
1046 void setOperand(unsigned i, Value *Val) {
1047 assert(i < 3 && "setOperand() out of range!");
1050 unsigned getNumOperands() const { return 3; }
1052 // Methods for support type inquiry through isa, cast, and dyn_cast:
1053 static inline bool classof(const ShuffleVectorInst *) { return true; }
1054 static inline bool classof(const Instruction *I) {
1055 return I->getOpcode() == Instruction::ShuffleVector;
1057 static inline bool classof(const Value *V) {
1058 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1063 //===----------------------------------------------------------------------===//
1065 //===----------------------------------------------------------------------===//
1067 // PHINode - The PHINode class is used to represent the magical mystical PHI
1068 // node, that can not exist in nature, but can be synthesized in a computer
1069 // scientist's overactive imagination.
1071 class PHINode : public Instruction {
1072 /// ReservedSpace - The number of operands actually allocated. NumOperands is
1073 /// the number actually in use.
1074 unsigned ReservedSpace;
1075 PHINode(const PHINode &PN);
1077 explicit PHINode(const Type *Ty, const std::string &Name = "",
1078 Instruction *InsertBefore = 0)
1079 : Instruction(Ty, Instruction::PHI, 0, 0, InsertBefore),
1084 PHINode(const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd)
1085 : Instruction(Ty, Instruction::PHI, 0, 0, InsertAtEnd),
1092 /// reserveOperandSpace - This method can be used to avoid repeated
1093 /// reallocation of PHI operand lists by reserving space for the correct
1094 /// number of operands before adding them. Unlike normal vector reserves,
1095 /// this method can also be used to trim the operand space.
1096 void reserveOperandSpace(unsigned NumValues) {
1097 resizeOperands(NumValues*2);
1100 virtual PHINode *clone() const;
1102 /// getNumIncomingValues - Return the number of incoming edges
1104 unsigned getNumIncomingValues() const { return getNumOperands()/2; }
1106 /// getIncomingValue - Return incoming value number x
1108 Value *getIncomingValue(unsigned i) const {
1109 assert(i*2 < getNumOperands() && "Invalid value number!");
1110 return getOperand(i*2);
1112 void setIncomingValue(unsigned i, Value *V) {
1113 assert(i*2 < getNumOperands() && "Invalid value number!");
1116 unsigned getOperandNumForIncomingValue(unsigned i) {
1120 /// getIncomingBlock - Return incoming basic block number x
1122 BasicBlock *getIncomingBlock(unsigned i) const {
1123 return reinterpret_cast<BasicBlock*>(getOperand(i*2+1));
1125 void setIncomingBlock(unsigned i, BasicBlock *BB) {
1126 setOperand(i*2+1, reinterpret_cast<Value*>(BB));
1128 unsigned getOperandNumForIncomingBlock(unsigned i) {
1132 /// addIncoming - Add an incoming value to the end of the PHI list
1134 void addIncoming(Value *V, BasicBlock *BB) {
1135 assert(getType() == V->getType() &&
1136 "All operands to PHI node must be the same type as the PHI node!");
1137 unsigned OpNo = NumOperands;
1138 if (OpNo+2 > ReservedSpace)
1139 resizeOperands(0); // Get more space!
1140 // Initialize some new operands.
1141 NumOperands = OpNo+2;
1142 OperandList[OpNo].init(V, this);
1143 OperandList[OpNo+1].init(reinterpret_cast<Value*>(BB), this);
1146 /// removeIncomingValue - Remove an incoming value. This is useful if a
1147 /// predecessor basic block is deleted. The value removed is returned.
1149 /// If the last incoming value for a PHI node is removed (and DeletePHIIfEmpty
1150 /// is true), the PHI node is destroyed and any uses of it are replaced with
1151 /// dummy values. The only time there should be zero incoming values to a PHI
1152 /// node is when the block is dead, so this strategy is sound.
1154 Value *removeIncomingValue(unsigned Idx, bool DeletePHIIfEmpty = true);
1156 Value *removeIncomingValue(const BasicBlock *BB, bool DeletePHIIfEmpty =true){
1157 int Idx = getBasicBlockIndex(BB);
1158 assert(Idx >= 0 && "Invalid basic block argument to remove!");
1159 return removeIncomingValue(Idx, DeletePHIIfEmpty);
1162 /// getBasicBlockIndex - Return the first index of the specified basic
1163 /// block in the value list for this PHI. Returns -1 if no instance.
1165 int getBasicBlockIndex(const BasicBlock *BB) const {
1166 Use *OL = OperandList;
1167 for (unsigned i = 0, e = getNumOperands(); i != e; i += 2)
1168 if (OL[i+1] == reinterpret_cast<const Value*>(BB)) return i/2;
1172 Value *getIncomingValueForBlock(const BasicBlock *BB) const {
1173 return getIncomingValue(getBasicBlockIndex(BB));
1176 /// hasConstantValue - If the specified PHI node always merges together the
1177 /// same value, return the value, otherwise return null.
1179 Value *hasConstantValue(bool AllowNonDominatingInstruction = false) const;
1181 /// Methods for support type inquiry through isa, cast, and dyn_cast:
1182 static inline bool classof(const PHINode *) { return true; }
1183 static inline bool classof(const Instruction *I) {
1184 return I->getOpcode() == Instruction::PHI;
1186 static inline bool classof(const Value *V) {
1187 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1190 void resizeOperands(unsigned NumOperands);
1193 //===----------------------------------------------------------------------===//
1195 //===----------------------------------------------------------------------===//
1197 //===---------------------------------------------------------------------------
1198 /// ReturnInst - Return a value (possibly void), from a function. Execution
1199 /// does not continue in this function any longer.
1201 class ReturnInst : public TerminatorInst {
1202 Use RetVal; // Return Value: null if 'void'.
1203 ReturnInst(const ReturnInst &RI);
1204 void init(Value *RetVal);
1207 // ReturnInst constructors:
1208 // ReturnInst() - 'ret void' instruction
1209 // ReturnInst( null) - 'ret void' instruction
1210 // ReturnInst(Value* X) - 'ret X' instruction
1211 // ReturnInst( null, Inst *) - 'ret void' instruction, insert before I
1212 // ReturnInst(Value* X, Inst *I) - 'ret X' instruction, insert before I
1213 // ReturnInst( null, BB *B) - 'ret void' instruction, insert @ end of BB
1214 // ReturnInst(Value* X, BB *B) - 'ret X' instruction, insert @ end of BB
1216 // NOTE: If the Value* passed is of type void then the constructor behaves as
1217 // if it was passed NULL.
1218 explicit ReturnInst(Value *retVal = 0, Instruction *InsertBefore = 0);
1219 ReturnInst(Value *retVal, BasicBlock *InsertAtEnd);
1220 explicit ReturnInst(BasicBlock *InsertAtEnd);
1222 virtual ReturnInst *clone() const;
1224 // Transparently provide more efficient getOperand methods.
1225 Value *getOperand(unsigned i) const {
1226 assert(i < getNumOperands() && "getOperand() out of range!");
1229 void setOperand(unsigned i, Value *Val) {
1230 assert(i < getNumOperands() && "setOperand() out of range!");
1234 Value *getReturnValue() const { return RetVal; }
1236 unsigned getNumSuccessors() const { return 0; }
1238 // Methods for support type inquiry through isa, cast, and dyn_cast:
1239 static inline bool classof(const ReturnInst *) { return true; }
1240 static inline bool classof(const Instruction *I) {
1241 return (I->getOpcode() == Instruction::Ret);
1243 static inline bool classof(const Value *V) {
1244 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1247 virtual BasicBlock *getSuccessorV(unsigned idx) const;
1248 virtual unsigned getNumSuccessorsV() const;
1249 virtual void setSuccessorV(unsigned idx, BasicBlock *B);
1252 //===----------------------------------------------------------------------===//
1254 //===----------------------------------------------------------------------===//
1256 //===---------------------------------------------------------------------------
1257 /// BranchInst - Conditional or Unconditional Branch instruction.
1259 class BranchInst : public TerminatorInst {
1260 /// Ops list - Branches are strange. The operands are ordered:
1261 /// TrueDest, FalseDest, Cond. This makes some accessors faster because
1262 /// they don't have to check for cond/uncond branchness.
1264 BranchInst(const BranchInst &BI);
1267 // BranchInst constructors (where {B, T, F} are blocks, and C is a condition):
1268 // BranchInst(BB *B) - 'br B'
1269 // BranchInst(BB* T, BB *F, Value *C) - 'br C, T, F'
1270 // BranchInst(BB* B, Inst *I) - 'br B' insert before I
1271 // BranchInst(BB* T, BB *F, Value *C, Inst *I) - 'br C, T, F', insert before I
1272 // BranchInst(BB* B, BB *I) - 'br B' insert at end
1273 // BranchInst(BB* T, BB *F, Value *C, BB *I) - 'br C, T, F', insert at end
1274 explicit BranchInst(BasicBlock *IfTrue, Instruction *InsertBefore = 0);
1275 BranchInst(BasicBlock *IfTrue, BasicBlock *IfFalse, Value *Cond,
1276 Instruction *InsertBefore = 0);
1277 BranchInst(BasicBlock *IfTrue, BasicBlock *InsertAtEnd);
1278 BranchInst(BasicBlock *IfTrue, BasicBlock *IfFalse, Value *Cond,
1279 BasicBlock *InsertAtEnd);
1281 /// Transparently provide more efficient getOperand methods.
1282 Value *getOperand(unsigned i) const {
1283 assert(i < getNumOperands() && "getOperand() out of range!");
1286 void setOperand(unsigned i, Value *Val) {
1287 assert(i < getNumOperands() && "setOperand() out of range!");
1291 virtual BranchInst *clone() const;
1293 inline bool isUnconditional() const { return getNumOperands() == 1; }
1294 inline bool isConditional() const { return getNumOperands() == 3; }
1296 inline Value *getCondition() const {
1297 assert(isConditional() && "Cannot get condition of an uncond branch!");
1298 return getOperand(2);
1301 void setCondition(Value *V) {
1302 assert(isConditional() && "Cannot set condition of unconditional branch!");
1306 // setUnconditionalDest - Change the current branch to an unconditional branch
1307 // targeting the specified block.
1308 // FIXME: Eliminate this ugly method.
1309 void setUnconditionalDest(BasicBlock *Dest) {
1310 if (isConditional()) { // Convert this to an uncond branch.
1315 setOperand(0, reinterpret_cast<Value*>(Dest));
1318 unsigned getNumSuccessors() const { return 1+isConditional(); }
1320 BasicBlock *getSuccessor(unsigned i) const {
1321 assert(i < getNumSuccessors() && "Successor # out of range for Branch!");
1322 return (i == 0) ? cast<BasicBlock>(getOperand(0)) :
1323 cast<BasicBlock>(getOperand(1));
1326 void setSuccessor(unsigned idx, BasicBlock *NewSucc) {
1327 assert(idx < getNumSuccessors() && "Successor # out of range for Branch!");
1328 setOperand(idx, reinterpret_cast<Value*>(NewSucc));
1331 // Methods for support type inquiry through isa, cast, and dyn_cast:
1332 static inline bool classof(const BranchInst *) { return true; }
1333 static inline bool classof(const Instruction *I) {
1334 return (I->getOpcode() == Instruction::Br);
1336 static inline bool classof(const Value *V) {
1337 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1340 virtual BasicBlock *getSuccessorV(unsigned idx) const;
1341 virtual unsigned getNumSuccessorsV() const;
1342 virtual void setSuccessorV(unsigned idx, BasicBlock *B);
1345 //===----------------------------------------------------------------------===//
1347 //===----------------------------------------------------------------------===//
1349 //===---------------------------------------------------------------------------
1350 /// SwitchInst - Multiway switch
1352 class SwitchInst : public TerminatorInst {
1353 unsigned ReservedSpace;
1354 // Operand[0] = Value to switch on
1355 // Operand[1] = Default basic block destination
1356 // Operand[2n ] = Value to match
1357 // Operand[2n+1] = BasicBlock to go to on match
1358 SwitchInst(const SwitchInst &RI);
1359 void init(Value *Value, BasicBlock *Default, unsigned NumCases);
1360 void resizeOperands(unsigned No);
1362 /// SwitchInst ctor - Create a new switch instruction, specifying a value to
1363 /// switch on and a default destination. The number of additional cases can
1364 /// be specified here to make memory allocation more efficient. This
1365 /// constructor can also autoinsert before another instruction.
1366 SwitchInst(Value *Value, BasicBlock *Default, unsigned NumCases,
1367 Instruction *InsertBefore = 0);
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 also autoinserts at the end of the specified BasicBlock.
1373 SwitchInst(Value *Value, BasicBlock *Default, unsigned NumCases,
1374 BasicBlock *InsertAtEnd);
1378 // Accessor Methods for Switch stmt
1379 inline Value *getCondition() const { return getOperand(0); }
1380 void setCondition(Value *V) { setOperand(0, V); }
1382 inline BasicBlock *getDefaultDest() const {
1383 return cast<BasicBlock>(getOperand(1));
1386 /// getNumCases - return the number of 'cases' in this switch instruction.
1387 /// Note that case #0 is always the default case.
1388 unsigned getNumCases() const {
1389 return getNumOperands()/2;
1392 /// getCaseValue - Return the specified case value. Note that case #0, the
1393 /// default destination, does not have a case value.
1394 ConstantInt *getCaseValue(unsigned i) {
1395 assert(i && i < getNumCases() && "Illegal case value to get!");
1396 return getSuccessorValue(i);
1399 /// getCaseValue - Return the specified case value. Note that case #0, the
1400 /// default destination, does not have a case value.
1401 const ConstantInt *getCaseValue(unsigned i) const {
1402 assert(i && i < getNumCases() && "Illegal case value to get!");
1403 return getSuccessorValue(i);
1406 /// findCaseValue - Search all of the case values for the specified constant.
1407 /// If it is explicitly handled, return the case number of it, otherwise
1408 /// return 0 to indicate that it is handled by the default handler.
1409 unsigned findCaseValue(const ConstantInt *C) const {
1410 for (unsigned i = 1, e = getNumCases(); i != e; ++i)
1411 if (getCaseValue(i) == C)
1416 /// findCaseDest - Finds the unique case value for a given successor. Returns
1417 /// null if the successor is not found, not unique, or is the default case.
1418 ConstantInt *findCaseDest(BasicBlock *BB) {
1419 if (BB == getDefaultDest()) return NULL;
1421 ConstantInt *CI = NULL;
1422 for (unsigned i = 1, e = getNumCases(); i != e; ++i) {
1423 if (getSuccessor(i) == BB) {
1424 if (CI) return NULL; // Multiple cases lead to BB.
1425 else CI = getCaseValue(i);
1431 /// addCase - Add an entry to the switch instruction...
1433 void addCase(ConstantInt *OnVal, BasicBlock *Dest);
1435 /// removeCase - This method removes the specified successor from the switch
1436 /// instruction. Note that this cannot be used to remove the default
1437 /// destination (successor #0).
1439 void removeCase(unsigned idx);
1441 virtual SwitchInst *clone() const;
1443 unsigned getNumSuccessors() const { return getNumOperands()/2; }
1444 BasicBlock *getSuccessor(unsigned idx) const {
1445 assert(idx < getNumSuccessors() &&"Successor idx out of range for switch!");
1446 return cast<BasicBlock>(getOperand(idx*2+1));
1448 void setSuccessor(unsigned idx, BasicBlock *NewSucc) {
1449 assert(idx < getNumSuccessors() && "Successor # out of range for switch!");
1450 setOperand(idx*2+1, reinterpret_cast<Value*>(NewSucc));
1453 // getSuccessorValue - Return the value associated with the specified
1455 inline ConstantInt *getSuccessorValue(unsigned idx) const {
1456 assert(idx < getNumSuccessors() && "Successor # out of range!");
1457 return reinterpret_cast<ConstantInt*>(getOperand(idx*2));
1460 // Methods for support type inquiry through isa, cast, and dyn_cast:
1461 static inline bool classof(const SwitchInst *) { return true; }
1462 static inline bool classof(const Instruction *I) {
1463 return I->getOpcode() == Instruction::Switch;
1465 static inline bool classof(const Value *V) {
1466 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1469 virtual BasicBlock *getSuccessorV(unsigned idx) const;
1470 virtual unsigned getNumSuccessorsV() const;
1471 virtual void setSuccessorV(unsigned idx, BasicBlock *B);
1474 //===----------------------------------------------------------------------===//
1476 //===----------------------------------------------------------------------===//
1478 //===---------------------------------------------------------------------------
1480 /// InvokeInst - Invoke instruction. The SubclassData field is used to hold the
1481 /// calling convention of the call.
1483 class InvokeInst : public TerminatorInst {
1484 ParamAttrsList *ParamAttrs;
1485 InvokeInst(const InvokeInst &BI);
1486 void init(Value *Fn, BasicBlock *IfNormal, BasicBlock *IfException,
1487 Value* const *Args, unsigned NumArgs);
1489 InvokeInst(Value *Fn, BasicBlock *IfNormal, BasicBlock *IfException,
1490 Value* const* Args, unsigned NumArgs, const std::string &Name = "",
1491 Instruction *InsertBefore = 0);
1492 InvokeInst(Value *Fn, BasicBlock *IfNormal, BasicBlock *IfException,
1493 Value* const* Args, unsigned NumArgs, const std::string &Name,
1494 BasicBlock *InsertAtEnd);
1497 virtual InvokeInst *clone() const;
1499 /// getCallingConv/setCallingConv - Get or set the calling convention of this
1501 unsigned getCallingConv() const { return SubclassData; }
1502 void setCallingConv(unsigned CC) {
1506 /// Obtains a pointer to the ParamAttrsList object which holds the
1507 /// parameter attributes information, if any.
1508 /// @returns 0 if no attributes have been set.
1509 /// @brief Get the parameter attributes.
1510 ParamAttrsList *getParamAttrs() const { return ParamAttrs; }
1512 /// Sets the parameter attributes for this InvokeInst. To construct a
1513 /// ParamAttrsList, see ParameterAttributes.h
1514 /// @brief Set the parameter attributes.
1515 void setParamAttrs(ParamAttrsList *attrs);
1517 /// getCalledFunction - Return the function called, or null if this is an
1518 /// indirect function invocation.
1520 Function *getCalledFunction() const {
1521 return dyn_cast<Function>(getOperand(0));
1524 // getCalledValue - Get a pointer to a function that is invoked by this inst.
1525 inline Value *getCalledValue() const { return getOperand(0); }
1527 // get*Dest - Return the destination basic blocks...
1528 BasicBlock *getNormalDest() const {
1529 return cast<BasicBlock>(getOperand(1));
1531 BasicBlock *getUnwindDest() const {
1532 return cast<BasicBlock>(getOperand(2));
1534 void setNormalDest(BasicBlock *B) {
1535 setOperand(1, reinterpret_cast<Value*>(B));
1538 void setUnwindDest(BasicBlock *B) {
1539 setOperand(2, reinterpret_cast<Value*>(B));
1542 inline BasicBlock *getSuccessor(unsigned i) const {
1543 assert(i < 2 && "Successor # out of range for invoke!");
1544 return i == 0 ? getNormalDest() : getUnwindDest();
1547 void setSuccessor(unsigned idx, BasicBlock *NewSucc) {
1548 assert(idx < 2 && "Successor # out of range for invoke!");
1549 setOperand(idx+1, reinterpret_cast<Value*>(NewSucc));
1552 unsigned getNumSuccessors() const { return 2; }
1554 // Methods for support type inquiry through isa, cast, and dyn_cast:
1555 static inline bool classof(const InvokeInst *) { return true; }
1556 static inline bool classof(const Instruction *I) {
1557 return (I->getOpcode() == Instruction::Invoke);
1559 static inline bool classof(const Value *V) {
1560 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1563 virtual BasicBlock *getSuccessorV(unsigned idx) const;
1564 virtual unsigned getNumSuccessorsV() const;
1565 virtual void setSuccessorV(unsigned idx, BasicBlock *B);
1569 //===----------------------------------------------------------------------===//
1571 //===----------------------------------------------------------------------===//
1573 //===---------------------------------------------------------------------------
1574 /// UnwindInst - Immediately exit the current function, unwinding the stack
1575 /// until an invoke instruction is found.
1577 class UnwindInst : public TerminatorInst {
1579 explicit UnwindInst(Instruction *InsertBefore = 0);
1580 explicit UnwindInst(BasicBlock *InsertAtEnd);
1582 virtual UnwindInst *clone() const;
1584 unsigned getNumSuccessors() const { return 0; }
1586 // Methods for support type inquiry through isa, cast, and dyn_cast:
1587 static inline bool classof(const UnwindInst *) { return true; }
1588 static inline bool classof(const Instruction *I) {
1589 return I->getOpcode() == Instruction::Unwind;
1591 static inline bool classof(const Value *V) {
1592 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1595 virtual BasicBlock *getSuccessorV(unsigned idx) const;
1596 virtual unsigned getNumSuccessorsV() const;
1597 virtual void setSuccessorV(unsigned idx, BasicBlock *B);
1600 //===----------------------------------------------------------------------===//
1601 // UnreachableInst Class
1602 //===----------------------------------------------------------------------===//
1604 //===---------------------------------------------------------------------------
1605 /// UnreachableInst - This function has undefined behavior. In particular, the
1606 /// presence of this instruction indicates some higher level knowledge that the
1607 /// end of the block cannot be reached.
1609 class UnreachableInst : public TerminatorInst {
1611 explicit UnreachableInst(Instruction *InsertBefore = 0);
1612 explicit UnreachableInst(BasicBlock *InsertAtEnd);
1614 virtual UnreachableInst *clone() const;
1616 unsigned getNumSuccessors() const { return 0; }
1618 // Methods for support type inquiry through isa, cast, and dyn_cast:
1619 static inline bool classof(const UnreachableInst *) { return true; }
1620 static inline bool classof(const Instruction *I) {
1621 return I->getOpcode() == Instruction::Unreachable;
1623 static inline bool classof(const Value *V) {
1624 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1627 virtual BasicBlock *getSuccessorV(unsigned idx) const;
1628 virtual unsigned getNumSuccessorsV() const;
1629 virtual void setSuccessorV(unsigned idx, BasicBlock *B);
1632 //===----------------------------------------------------------------------===//
1634 //===----------------------------------------------------------------------===//
1636 /// @brief This class represents a truncation of integer types.
1637 class TruncInst : public CastInst {
1638 /// Private copy constructor
1639 TruncInst(const TruncInst &CI)
1640 : CastInst(CI.getType(), Trunc, CI.getOperand(0)) {
1643 /// @brief Constructor with insert-before-instruction semantics
1645 Value *S, ///< The value to be truncated
1646 const Type *Ty, ///< The (smaller) type to truncate to
1647 const std::string &Name = "", ///< A name for the new instruction
1648 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
1651 /// @brief Constructor with insert-at-end-of-block semantics
1653 Value *S, ///< The value to be truncated
1654 const Type *Ty, ///< The (smaller) type to truncate to
1655 const std::string &Name, ///< A name for the new instruction
1656 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
1659 /// @brief Clone an identical TruncInst
1660 virtual CastInst *clone() const;
1662 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
1663 static inline bool classof(const TruncInst *) { return true; }
1664 static inline bool classof(const Instruction *I) {
1665 return I->getOpcode() == Trunc;
1667 static inline bool classof(const Value *V) {
1668 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1672 //===----------------------------------------------------------------------===//
1674 //===----------------------------------------------------------------------===//
1676 /// @brief This class represents zero extension of integer types.
1677 class ZExtInst : public CastInst {
1678 /// @brief Private copy constructor
1679 ZExtInst(const ZExtInst &CI)
1680 : CastInst(CI.getType(), ZExt, CI.getOperand(0)) {
1683 /// @brief Constructor with insert-before-instruction semantics
1685 Value *S, ///< The value to be zero extended
1686 const Type *Ty, ///< The type to zero extend to
1687 const std::string &Name = "", ///< A name for the new instruction
1688 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
1691 /// @brief Constructor with insert-at-end semantics.
1693 Value *S, ///< The value to be zero extended
1694 const Type *Ty, ///< The type to zero extend to
1695 const std::string &Name, ///< A name for the new instruction
1696 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
1699 /// @brief Clone an identical ZExtInst
1700 virtual CastInst *clone() const;
1702 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
1703 static inline bool classof(const ZExtInst *) { return true; }
1704 static inline bool classof(const Instruction *I) {
1705 return I->getOpcode() == ZExt;
1707 static inline bool classof(const Value *V) {
1708 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1712 //===----------------------------------------------------------------------===//
1714 //===----------------------------------------------------------------------===//
1716 /// @brief This class represents a sign extension of integer types.
1717 class SExtInst : public CastInst {
1718 /// @brief Private copy constructor
1719 SExtInst(const SExtInst &CI)
1720 : CastInst(CI.getType(), SExt, CI.getOperand(0)) {
1723 /// @brief Constructor with insert-before-instruction semantics
1725 Value *S, ///< The value to be sign extended
1726 const Type *Ty, ///< The type to sign extend to
1727 const std::string &Name = "", ///< A name for the new instruction
1728 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
1731 /// @brief Constructor with insert-at-end-of-block semantics
1733 Value *S, ///< The value to be sign extended
1734 const Type *Ty, ///< The type to sign extend to
1735 const std::string &Name, ///< A name for the new instruction
1736 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
1739 /// @brief Clone an identical SExtInst
1740 virtual CastInst *clone() const;
1742 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
1743 static inline bool classof(const SExtInst *) { return true; }
1744 static inline bool classof(const Instruction *I) {
1745 return I->getOpcode() == SExt;
1747 static inline bool classof(const Value *V) {
1748 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1752 //===----------------------------------------------------------------------===//
1753 // FPTruncInst Class
1754 //===----------------------------------------------------------------------===//
1756 /// @brief This class represents a truncation of floating point types.
1757 class FPTruncInst : public CastInst {
1758 FPTruncInst(const FPTruncInst &CI)
1759 : CastInst(CI.getType(), FPTrunc, CI.getOperand(0)) {
1762 /// @brief Constructor with insert-before-instruction semantics
1764 Value *S, ///< The value to be truncated
1765 const Type *Ty, ///< The type to truncate to
1766 const std::string &Name = "", ///< A name for the new instruction
1767 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
1770 /// @brief Constructor with insert-before-instruction semantics
1772 Value *S, ///< The value to be truncated
1773 const Type *Ty, ///< The type to truncate to
1774 const std::string &Name, ///< A name for the new instruction
1775 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
1778 /// @brief Clone an identical FPTruncInst
1779 virtual CastInst *clone() const;
1781 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
1782 static inline bool classof(const FPTruncInst *) { return true; }
1783 static inline bool classof(const Instruction *I) {
1784 return I->getOpcode() == FPTrunc;
1786 static inline bool classof(const Value *V) {
1787 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1791 //===----------------------------------------------------------------------===//
1793 //===----------------------------------------------------------------------===//
1795 /// @brief This class represents an extension of floating point types.
1796 class FPExtInst : public CastInst {
1797 FPExtInst(const FPExtInst &CI)
1798 : CastInst(CI.getType(), FPExt, CI.getOperand(0)) {
1801 /// @brief Constructor with insert-before-instruction semantics
1803 Value *S, ///< The value to be extended
1804 const Type *Ty, ///< The type to extend to
1805 const std::string &Name = "", ///< A name for the new instruction
1806 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
1809 /// @brief Constructor with insert-at-end-of-block semantics
1811 Value *S, ///< The value to be extended
1812 const Type *Ty, ///< The type to extend to
1813 const std::string &Name, ///< A name for the new instruction
1814 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
1817 /// @brief Clone an identical FPExtInst
1818 virtual CastInst *clone() const;
1820 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
1821 static inline bool classof(const FPExtInst *) { return true; }
1822 static inline bool classof(const Instruction *I) {
1823 return I->getOpcode() == FPExt;
1825 static inline bool classof(const Value *V) {
1826 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1830 //===----------------------------------------------------------------------===//
1832 //===----------------------------------------------------------------------===//
1834 /// @brief This class represents a cast unsigned integer to floating point.
1835 class UIToFPInst : public CastInst {
1836 UIToFPInst(const UIToFPInst &CI)
1837 : CastInst(CI.getType(), UIToFP, CI.getOperand(0)) {
1840 /// @brief Constructor with insert-before-instruction semantics
1842 Value *S, ///< The value to be converted
1843 const Type *Ty, ///< The type to convert to
1844 const std::string &Name = "", ///< A name for the new instruction
1845 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
1848 /// @brief Constructor with insert-at-end-of-block semantics
1850 Value *S, ///< The value to be converted
1851 const Type *Ty, ///< The type to convert to
1852 const std::string &Name, ///< A name for the new instruction
1853 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
1856 /// @brief Clone an identical UIToFPInst
1857 virtual CastInst *clone() const;
1859 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
1860 static inline bool classof(const UIToFPInst *) { return true; }
1861 static inline bool classof(const Instruction *I) {
1862 return I->getOpcode() == UIToFP;
1864 static inline bool classof(const Value *V) {
1865 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1869 //===----------------------------------------------------------------------===//
1871 //===----------------------------------------------------------------------===//
1873 /// @brief This class represents a cast from signed integer to floating point.
1874 class SIToFPInst : public CastInst {
1875 SIToFPInst(const SIToFPInst &CI)
1876 : CastInst(CI.getType(), SIToFP, CI.getOperand(0)) {
1879 /// @brief Constructor with insert-before-instruction semantics
1881 Value *S, ///< The value to be converted
1882 const Type *Ty, ///< The type to convert to
1883 const std::string &Name = "", ///< A name for the new instruction
1884 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
1887 /// @brief Constructor with insert-at-end-of-block semantics
1889 Value *S, ///< The value to be converted
1890 const Type *Ty, ///< The type to convert to
1891 const std::string &Name, ///< A name for the new instruction
1892 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
1895 /// @brief Clone an identical SIToFPInst
1896 virtual CastInst *clone() const;
1898 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
1899 static inline bool classof(const SIToFPInst *) { return true; }
1900 static inline bool classof(const Instruction *I) {
1901 return I->getOpcode() == SIToFP;
1903 static inline bool classof(const Value *V) {
1904 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1908 //===----------------------------------------------------------------------===//
1910 //===----------------------------------------------------------------------===//
1912 /// @brief This class represents a cast from floating point to unsigned integer
1913 class FPToUIInst : public CastInst {
1914 FPToUIInst(const FPToUIInst &CI)
1915 : CastInst(CI.getType(), FPToUI, CI.getOperand(0)) {
1918 /// @brief Constructor with insert-before-instruction semantics
1920 Value *S, ///< The value to be converted
1921 const Type *Ty, ///< The type to convert to
1922 const std::string &Name = "", ///< A name for the new instruction
1923 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
1926 /// @brief Constructor with insert-at-end-of-block semantics
1928 Value *S, ///< The value to be converted
1929 const Type *Ty, ///< The type to convert to
1930 const std::string &Name, ///< A name for the new instruction
1931 BasicBlock *InsertAtEnd ///< Where to insert the new instruction
1934 /// @brief Clone an identical FPToUIInst
1935 virtual CastInst *clone() const;
1937 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
1938 static inline bool classof(const FPToUIInst *) { return true; }
1939 static inline bool classof(const Instruction *I) {
1940 return I->getOpcode() == FPToUI;
1942 static inline bool classof(const Value *V) {
1943 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1947 //===----------------------------------------------------------------------===//
1949 //===----------------------------------------------------------------------===//
1951 /// @brief This class represents a cast from floating point to signed integer.
1952 class FPToSIInst : public CastInst {
1953 FPToSIInst(const FPToSIInst &CI)
1954 : CastInst(CI.getType(), FPToSI, CI.getOperand(0)) {
1957 /// @brief Constructor with insert-before-instruction semantics
1959 Value *S, ///< The value to be converted
1960 const Type *Ty, ///< The type to convert to
1961 const std::string &Name = "", ///< A name for the new instruction
1962 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
1965 /// @brief Constructor with insert-at-end-of-block semantics
1967 Value *S, ///< The value to be converted
1968 const Type *Ty, ///< The type to convert to
1969 const std::string &Name, ///< A name for the new instruction
1970 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
1973 /// @brief Clone an identical FPToSIInst
1974 virtual CastInst *clone() const;
1976 /// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
1977 static inline bool classof(const FPToSIInst *) { return true; }
1978 static inline bool classof(const Instruction *I) {
1979 return I->getOpcode() == FPToSI;
1981 static inline bool classof(const Value *V) {
1982 return isa<Instruction>(V) && classof(cast<Instruction>(V));
1986 //===----------------------------------------------------------------------===//
1987 // IntToPtrInst Class
1988 //===----------------------------------------------------------------------===//
1990 /// @brief This class represents a cast from an integer to a pointer.
1991 class IntToPtrInst : public CastInst {
1992 IntToPtrInst(const IntToPtrInst &CI)
1993 : CastInst(CI.getType(), IntToPtr, CI.getOperand(0)) {
1996 /// @brief Constructor with insert-before-instruction semantics
1998 Value *S, ///< The value to be converted
1999 const Type *Ty, ///< The type to convert to
2000 const std::string &Name = "", ///< A name for the new instruction
2001 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
2004 /// @brief Constructor with insert-at-end-of-block semantics
2006 Value *S, ///< The value to be converted
2007 const Type *Ty, ///< The type to convert to
2008 const std::string &Name, ///< A name for the new instruction
2009 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
2012 /// @brief Clone an identical IntToPtrInst
2013 virtual CastInst *clone() const;
2015 // Methods for support type inquiry through isa, cast, and dyn_cast:
2016 static inline bool classof(const IntToPtrInst *) { return true; }
2017 static inline bool classof(const Instruction *I) {
2018 return I->getOpcode() == IntToPtr;
2020 static inline bool classof(const Value *V) {
2021 return isa<Instruction>(V) && classof(cast<Instruction>(V));
2025 //===----------------------------------------------------------------------===//
2026 // PtrToIntInst Class
2027 //===----------------------------------------------------------------------===//
2029 /// @brief This class represents a cast from a pointer to an integer
2030 class PtrToIntInst : public CastInst {
2031 PtrToIntInst(const PtrToIntInst &CI)
2032 : CastInst(CI.getType(), PtrToInt, CI.getOperand(0)) {
2035 /// @brief Constructor with insert-before-instruction semantics
2037 Value *S, ///< The value to be converted
2038 const Type *Ty, ///< The type to convert to
2039 const std::string &Name = "", ///< A name for the new instruction
2040 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
2043 /// @brief Constructor with insert-at-end-of-block semantics
2045 Value *S, ///< The value to be converted
2046 const Type *Ty, ///< The type to convert to
2047 const std::string &Name, ///< A name for the new instruction
2048 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
2051 /// @brief Clone an identical PtrToIntInst
2052 virtual CastInst *clone() const;
2054 // Methods for support type inquiry through isa, cast, and dyn_cast:
2055 static inline bool classof(const PtrToIntInst *) { return true; }
2056 static inline bool classof(const Instruction *I) {
2057 return I->getOpcode() == PtrToInt;
2059 static inline bool classof(const Value *V) {
2060 return isa<Instruction>(V) && classof(cast<Instruction>(V));
2064 //===----------------------------------------------------------------------===//
2065 // BitCastInst Class
2066 //===----------------------------------------------------------------------===//
2068 /// @brief This class represents a no-op cast from one type to another.
2069 class BitCastInst : public CastInst {
2070 BitCastInst(const BitCastInst &CI)
2071 : CastInst(CI.getType(), BitCast, CI.getOperand(0)) {
2074 /// @brief Constructor with insert-before-instruction semantics
2076 Value *S, ///< The value to be casted
2077 const Type *Ty, ///< The type to casted to
2078 const std::string &Name = "", ///< A name for the new instruction
2079 Instruction *InsertBefore = 0 ///< Where to insert the new instruction
2082 /// @brief Constructor with insert-at-end-of-block semantics
2084 Value *S, ///< The value to be casted
2085 const Type *Ty, ///< The type to casted to
2086 const std::string &Name, ///< A name for the new instruction
2087 BasicBlock *InsertAtEnd ///< The block to insert the instruction into
2090 /// @brief Clone an identical BitCastInst
2091 virtual CastInst *clone() const;
2093 // Methods for support type inquiry through isa, cast, and dyn_cast:
2094 static inline bool classof(const BitCastInst *) { return true; }
2095 static inline bool classof(const Instruction *I) {
2096 return I->getOpcode() == BitCast;
2098 static inline bool classof(const Value *V) {
2099 return isa<Instruction>(V) && classof(cast<Instruction>(V));
2103 } // End llvm namespace