1 //===---- llvm/Support/IRBuilder.h - Builder for LLVM Instrs ----*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the IRBuilder class, which is used as a convenient way
11 // to create LLVM instructions with a consistent and simplified interface.
13 //===----------------------------------------------------------------------===//
15 #ifndef LLVM_SUPPORT_IRBUILDER_H
16 #define LLVM_SUPPORT_IRBUILDER_H
18 #include "llvm/Constants.h"
19 #include "llvm/Instructions.h"
20 #include "llvm/GlobalVariable.h"
21 #include "llvm/Function.h"
22 #include "llvm/Support/ConstantFolder.h"
26 /// IRBuilder - This provides a uniform API for creating instructions and
27 /// inserting them into a basic block: either at the end of a BasicBlock, or
28 /// at a specific iterator location in a block.
30 /// Note that the builder does not expose the full generality of LLVM
31 /// instructions. For example, it cannot be used to create instructions with
32 /// arbitrary names (specifically, names with nul characters in them) - It only
33 /// supports nul-terminated C strings. For fully generic names, use
34 /// I->setName(). For access to extra instruction properties, use the mutators
35 /// (e.g. setVolatile) on the instructions after they have been created.
36 /// The first template argument handles whether or not to preserve names in the
37 /// final instruction output. This defaults to on. The second template argument
38 /// specifies a class to use for creating constants. This defaults to creating
39 /// minimally folded constants.
40 template <bool preserveNames=true, typename T = ConstantFolder> class IRBuilder{
42 BasicBlock::iterator InsertPt;
45 IRBuilder(const T& F = T()) : Folder(F) { ClearInsertionPoint(); }
46 explicit IRBuilder(BasicBlock *TheBB, const T& F = T())
47 : Folder(F) { SetInsertPoint(TheBB); }
48 IRBuilder(BasicBlock *TheBB, BasicBlock::iterator IP, const T& F = T())
49 : Folder(F) { SetInsertPoint(TheBB, IP); }
51 /// getFolder - Get the constant folder being used.
52 const T& getFolder() { return Folder; }
54 /// isNamePreserving - Return true if this builder is configured to actually
55 /// add the requested names to IR created through it.
56 bool isNamePreserving() const { return preserveNames; }
58 //===--------------------------------------------------------------------===//
59 // Builder configuration methods
60 //===--------------------------------------------------------------------===//
62 /// ClearInsertionPoint - Clear the insertion point: created instructions will
63 /// not be inserted into a block.
64 void ClearInsertionPoint() {
68 BasicBlock *GetInsertBlock() const { return BB; }
70 BasicBlock::iterator GetInsertPoint() const { return InsertPt; }
72 /// SetInsertPoint - This specifies that created instructions should be
73 /// appended to the end of the specified block.
74 void SetInsertPoint(BasicBlock *TheBB) {
79 /// SetInsertPoint - This specifies that created instructions should be
80 /// inserted at the specified point.
81 void SetInsertPoint(BasicBlock *TheBB, BasicBlock::iterator IP) {
86 /// Insert - Insert and return the specified instruction.
87 template<typename InstTy>
88 InstTy *Insert(InstTy *I, const char *Name = "") const {
89 InsertHelper(I, Name);
93 /// InsertHelper - Insert the specified instruction at the specified insertion
94 /// point. This is split out of Insert so that it isn't duplicated for every
95 /// template instantiation.
96 void InsertHelper(Instruction *I, const char *Name) const {
97 if (BB) BB->getInstList().insert(InsertPt, I);
98 if (preserveNames && Name[0])
102 //===--------------------------------------------------------------------===//
103 // Instruction creation methods: Terminators
104 //===--------------------------------------------------------------------===//
106 /// CreateRetVoid - Create a 'ret void' instruction.
107 ReturnInst *CreateRetVoid() {
108 return Insert(ReturnInst::Create());
112 /// CreateRet - Create a 'ret <val>' instruction.
114 ReturnInst *CreateRet(Value *V) {
115 return Insert(ReturnInst::Create(V));
118 /// CreateAggregateRet - Create a sequence of N insertvalue instructions,
119 /// with one Value from the retVals array each, that build a aggregate
120 /// return value one value at a time, and a ret instruction to return
121 /// the resulting aggregate value. This is a convenience function for
122 /// code that uses aggregate return values as a vehicle for having
123 /// multiple return values.
125 ReturnInst *CreateAggregateRet(Value * const* retVals, unsigned N) {
126 const Type *RetType = BB->getParent()->getReturnType();
127 Value *V = UndefValue::get(RetType);
128 for (unsigned i = 0; i != N; ++i)
129 V = CreateInsertValue(V, retVals[i], i, "mrv");
130 return Insert(ReturnInst::Create(V));
133 /// CreateBr - Create an unconditional 'br label X' instruction.
134 BranchInst *CreateBr(BasicBlock *Dest) {
135 return Insert(BranchInst::Create(Dest));
138 /// CreateCondBr - Create a conditional 'br Cond, TrueDest, FalseDest'
140 BranchInst *CreateCondBr(Value *Cond, BasicBlock *True, BasicBlock *False) {
141 return Insert(BranchInst::Create(True, False, Cond));
144 /// CreateSwitch - Create a switch instruction with the specified value,
145 /// default dest, and with a hint for the number of cases that will be added
146 /// (for efficient allocation).
147 SwitchInst *CreateSwitch(Value *V, BasicBlock *Dest, unsigned NumCases = 10) {
148 return Insert(SwitchInst::Create(V, Dest, NumCases));
151 /// CreateInvoke - Create an invoke instruction.
152 template<typename InputIterator>
153 InvokeInst *CreateInvoke(Value *Callee, BasicBlock *NormalDest,
154 BasicBlock *UnwindDest, InputIterator ArgBegin,
155 InputIterator ArgEnd, const char *Name = "") {
156 return Insert(InvokeInst::Create(Callee, NormalDest, UnwindDest,
157 ArgBegin, ArgEnd), Name);
160 UnwindInst *CreateUnwind() {
161 return Insert(new UnwindInst());
164 UnreachableInst *CreateUnreachable() {
165 return Insert(new UnreachableInst());
168 //===--------------------------------------------------------------------===//
169 // Instruction creation methods: Binary Operators
170 //===--------------------------------------------------------------------===//
172 Value *CreateAdd(Value *LHS, Value *RHS, const char *Name = "") {
173 if (Constant *LC = dyn_cast<Constant>(LHS))
174 if (Constant *RC = dyn_cast<Constant>(RHS))
175 return Folder.CreateAdd(LC, RC);
176 return Insert(BinaryOperator::CreateAdd(LHS, RHS), Name);
178 Value *CreateSub(Value *LHS, Value *RHS, const char *Name = "") {
179 if (Constant *LC = dyn_cast<Constant>(LHS))
180 if (Constant *RC = dyn_cast<Constant>(RHS))
181 return Folder.CreateSub(LC, RC);
182 return Insert(BinaryOperator::CreateSub(LHS, RHS), Name);
184 Value *CreateMul(Value *LHS, Value *RHS, const char *Name = "") {
185 if (Constant *LC = dyn_cast<Constant>(LHS))
186 if (Constant *RC = dyn_cast<Constant>(RHS))
187 return Folder.CreateMul(LC, RC);
188 return Insert(BinaryOperator::CreateMul(LHS, RHS), Name);
190 Value *CreateUDiv(Value *LHS, Value *RHS, const char *Name = "") {
191 if (Constant *LC = dyn_cast<Constant>(LHS))
192 if (Constant *RC = dyn_cast<Constant>(RHS))
193 return Folder.CreateUDiv(LC, RC);
194 return Insert(BinaryOperator::CreateUDiv(LHS, RHS), Name);
196 Value *CreateSDiv(Value *LHS, Value *RHS, const char *Name = "") {
197 if (Constant *LC = dyn_cast<Constant>(LHS))
198 if (Constant *RC = dyn_cast<Constant>(RHS))
199 return Folder.CreateSDiv(LC, RC);
200 return Insert(BinaryOperator::CreateSDiv(LHS, RHS), Name);
202 Value *CreateFDiv(Value *LHS, Value *RHS, const char *Name = "") {
203 if (Constant *LC = dyn_cast<Constant>(LHS))
204 if (Constant *RC = dyn_cast<Constant>(RHS))
205 return Folder.CreateFDiv(LC, RC);
206 return Insert(BinaryOperator::CreateFDiv(LHS, RHS), Name);
208 Value *CreateURem(Value *LHS, Value *RHS, const char *Name = "") {
209 if (Constant *LC = dyn_cast<Constant>(LHS))
210 if (Constant *RC = dyn_cast<Constant>(RHS))
211 return Folder.CreateURem(LC, RC);
212 return Insert(BinaryOperator::CreateURem(LHS, RHS), Name);
214 Value *CreateSRem(Value *LHS, Value *RHS, const char *Name = "") {
215 if (Constant *LC = dyn_cast<Constant>(LHS))
216 if (Constant *RC = dyn_cast<Constant>(RHS))
217 return Folder.CreateSRem(LC, RC);
218 return Insert(BinaryOperator::CreateSRem(LHS, RHS), Name);
220 Value *CreateFRem(Value *LHS, Value *RHS, const char *Name = "") {
221 if (Constant *LC = dyn_cast<Constant>(LHS))
222 if (Constant *RC = dyn_cast<Constant>(RHS))
223 return Folder.CreateFRem(LC, RC);
224 return Insert(BinaryOperator::CreateFRem(LHS, RHS), Name);
226 Value *CreateShl(Value *LHS, Value *RHS, const char *Name = "") {
227 if (Constant *LC = dyn_cast<Constant>(LHS))
228 if (Constant *RC = dyn_cast<Constant>(RHS))
229 return Folder.CreateShl(LC, RC);
230 return Insert(BinaryOperator::CreateShl(LHS, RHS), Name);
232 Value *CreateLShr(Value *LHS, Value *RHS, const char *Name = "") {
233 if (Constant *LC = dyn_cast<Constant>(LHS))
234 if (Constant *RC = dyn_cast<Constant>(RHS))
235 return Folder.CreateLShr(LC, RC);
236 return Insert(BinaryOperator::CreateLShr(LHS, RHS), Name);
238 Value *CreateAShr(Value *LHS, Value *RHS, const char *Name = "") {
239 if (Constant *LC = dyn_cast<Constant>(LHS))
240 if (Constant *RC = dyn_cast<Constant>(RHS))
241 return Folder.CreateAShr(LC, RC);
242 return Insert(BinaryOperator::CreateAShr(LHS, RHS), Name);
244 Value *CreateAnd(Value *LHS, Value *RHS, const char *Name = "") {
245 if (Constant *LC = dyn_cast<Constant>(LHS))
246 if (Constant *RC = dyn_cast<Constant>(RHS))
247 return Folder.CreateAnd(LC, RC);
248 return Insert(BinaryOperator::CreateAnd(LHS, RHS), Name);
250 Value *CreateOr(Value *LHS, Value *RHS, const char *Name = "") {
251 if (Constant *LC = dyn_cast<Constant>(LHS))
252 if (Constant *RC = dyn_cast<Constant>(RHS))
253 return Folder.CreateOr(LC, RC);
254 return Insert(BinaryOperator::CreateOr(LHS, RHS), Name);
256 Value *CreateXor(Value *LHS, Value *RHS, const char *Name = "") {
257 if (Constant *LC = dyn_cast<Constant>(LHS))
258 if (Constant *RC = dyn_cast<Constant>(RHS))
259 return Folder.CreateXor(LC, RC);
260 return Insert(BinaryOperator::CreateXor(LHS, RHS), Name);
263 Value *CreateBinOp(Instruction::BinaryOps Opc,
264 Value *LHS, Value *RHS, const char *Name = "") {
265 if (Constant *LC = dyn_cast<Constant>(LHS))
266 if (Constant *RC = dyn_cast<Constant>(RHS))
267 return Folder.CreateBinOp(Opc, LC, RC);
268 return Insert(BinaryOperator::Create(Opc, LHS, RHS), Name);
271 Value *CreateNeg(Value *V, const char *Name = "") {
272 if (Constant *VC = dyn_cast<Constant>(V))
273 return Folder.CreateNeg(VC);
274 return Insert(BinaryOperator::CreateNeg(V), Name);
276 Value *CreateNot(Value *V, const char *Name = "") {
277 if (Constant *VC = dyn_cast<Constant>(V))
278 return Folder.CreateNot(VC);
279 return Insert(BinaryOperator::CreateNot(V), Name);
282 //===--------------------------------------------------------------------===//
283 // Instruction creation methods: Memory Instructions
284 //===--------------------------------------------------------------------===//
286 MallocInst *CreateMalloc(const Type *Ty, Value *ArraySize = 0,
287 const char *Name = "") {
288 return Insert(new MallocInst(Ty, ArraySize), Name);
290 AllocaInst *CreateAlloca(const Type *Ty, Value *ArraySize = 0,
291 const char *Name = "") {
292 return Insert(new AllocaInst(Ty, ArraySize), Name);
294 FreeInst *CreateFree(Value *Ptr) {
295 return Insert(new FreeInst(Ptr));
297 LoadInst *CreateLoad(Value *Ptr, const char *Name = "") {
298 return Insert(new LoadInst(Ptr), Name);
300 LoadInst *CreateLoad(Value *Ptr, bool isVolatile, const char *Name = "") {
301 return Insert(new LoadInst(Ptr, 0, isVolatile), Name);
303 StoreInst *CreateStore(Value *Val, Value *Ptr, bool isVolatile = false) {
304 return Insert(new StoreInst(Val, Ptr, isVolatile));
306 template<typename InputIterator>
307 Value *CreateGEP(Value *Ptr, InputIterator IdxBegin, InputIterator IdxEnd,
308 const char *Name = "") {
309 if (Constant *PC = dyn_cast<Constant>(Ptr)) {
310 // Every index must be constant.
312 for (i = IdxBegin; i < IdxEnd; ++i) {
313 if (!dyn_cast<Constant>(*i))
317 return Folder.CreateGetElementPtr(PC, &IdxBegin[0], IdxEnd - IdxBegin);
319 return Insert(GetElementPtrInst::Create(Ptr, IdxBegin, IdxEnd), Name);
321 Value *CreateGEP(Value *Ptr, Value *Idx, const char *Name = "") {
322 if (Constant *PC = dyn_cast<Constant>(Ptr))
323 if (Constant *IC = dyn_cast<Constant>(Idx))
324 return Folder.CreateGetElementPtr(PC, &IC, 1);
325 return Insert(GetElementPtrInst::Create(Ptr, Idx), Name);
327 Value *CreateConstGEP1_32(Value *Ptr, unsigned Idx0, const char *Name = "") {
328 Value *Idx = ConstantInt::get(Type::Int32Ty, Idx0);
330 if (Constant *PC = dyn_cast<Constant>(Ptr))
331 return Folder.CreateGetElementPtr(PC, &Idx, 1);
333 return Insert(GetElementPtrInst::Create(Ptr, &Idx, &Idx+1), Name);
335 Value *CreateConstGEP2_32(Value *Ptr, unsigned Idx0, unsigned Idx1,
336 const char *Name = "") {
338 ConstantInt::get(Type::Int32Ty, Idx0),
339 ConstantInt::get(Type::Int32Ty, Idx1)
342 if (Constant *PC = dyn_cast<Constant>(Ptr))
343 return Folder.CreateGetElementPtr(PC, Idxs, 2);
345 return Insert(GetElementPtrInst::Create(Ptr, Idxs, Idxs+2), Name);
347 Value *CreateConstGEP1_64(Value *Ptr, uint64_t Idx0, const char *Name = "") {
348 Value *Idx = ConstantInt::get(Type::Int64Ty, Idx0);
350 if (Constant *PC = dyn_cast<Constant>(Ptr))
351 return Folder.CreateGetElementPtr(PC, &Idx, 1);
353 return Insert(GetElementPtrInst::Create(Ptr, &Idx, &Idx+1), Name);
355 Value *CreateConstGEP2_64(Value *Ptr, uint64_t Idx0, uint64_t Idx1,
356 const char *Name = "") {
358 ConstantInt::get(Type::Int64Ty, Idx0),
359 ConstantInt::get(Type::Int64Ty, Idx1)
362 if (Constant *PC = dyn_cast<Constant>(Ptr))
363 return Folder.CreateGetElementPtr(PC, Idxs, 2);
365 return Insert(GetElementPtrInst::Create(Ptr, Idxs, Idxs+2), Name);
367 Value *CreateStructGEP(Value *Ptr, unsigned Idx, const char *Name = "") {
368 return CreateConstGEP2_32(Ptr, 0, Idx, Name);
370 Value *CreateGlobalString(const char *Str = "", const char *Name = "") {
371 Constant *StrConstant = ConstantArray::get(Str, true);
372 GlobalVariable *gv = new GlobalVariable(StrConstant->getType(),
374 GlobalValue::InternalLinkage,
377 BB->getParent()->getParent(),
382 Value *CreateGlobalStringPtr(const char *Str = "", const char *Name = "") {
383 Value *gv = CreateGlobalString(Str, Name);
384 Value *zero = ConstantInt::get(Type::Int32Ty, 0);
385 Value *Args[] = { zero, zero };
386 return CreateGEP(gv, Args, Args+2, Name);
388 //===--------------------------------------------------------------------===//
389 // Instruction creation methods: Cast/Conversion Operators
390 //===--------------------------------------------------------------------===//
392 Value *CreateTrunc(Value *V, const Type *DestTy, const char *Name = "") {
393 return CreateCast(Instruction::Trunc, V, DestTy, Name);
395 Value *CreateZExt(Value *V, const Type *DestTy, const char *Name = "") {
396 return CreateCast(Instruction::ZExt, V, DestTy, Name);
398 Value *CreateSExt(Value *V, const Type *DestTy, const char *Name = "") {
399 return CreateCast(Instruction::SExt, V, DestTy, Name);
401 Value *CreateFPToUI(Value *V, const Type *DestTy, const char *Name = ""){
402 return CreateCast(Instruction::FPToUI, V, DestTy, Name);
404 Value *CreateFPToSI(Value *V, const Type *DestTy, const char *Name = ""){
405 return CreateCast(Instruction::FPToSI, V, DestTy, Name);
407 Value *CreateUIToFP(Value *V, const Type *DestTy, const char *Name = ""){
408 return CreateCast(Instruction::UIToFP, V, DestTy, Name);
410 Value *CreateSIToFP(Value *V, const Type *DestTy, const char *Name = ""){
411 return CreateCast(Instruction::SIToFP, V, DestTy, Name);
413 Value *CreateFPTrunc(Value *V, const Type *DestTy,
414 const char *Name = "") {
415 return CreateCast(Instruction::FPTrunc, V, DestTy, Name);
417 Value *CreateFPExt(Value *V, const Type *DestTy, const char *Name = "") {
418 return CreateCast(Instruction::FPExt, V, DestTy, Name);
420 Value *CreatePtrToInt(Value *V, const Type *DestTy,
421 const char *Name = "") {
422 return CreateCast(Instruction::PtrToInt, V, DestTy, Name);
424 Value *CreateIntToPtr(Value *V, const Type *DestTy,
425 const char *Name = "") {
426 return CreateCast(Instruction::IntToPtr, V, DestTy, Name);
428 Value *CreateBitCast(Value *V, const Type *DestTy,
429 const char *Name = "") {
430 return CreateCast(Instruction::BitCast, V, DestTy, Name);
433 Value *CreateCast(Instruction::CastOps Op, Value *V, const Type *DestTy,
434 const char *Name = "") {
435 if (V->getType() == DestTy)
437 if (Constant *VC = dyn_cast<Constant>(V))
438 return Folder.CreateCast(Op, VC, DestTy);
439 return Insert(CastInst::Create(Op, V, DestTy), Name);
441 Value *CreateIntCast(Value *V, const Type *DestTy, bool isSigned,
442 const char *Name = "") {
443 if (V->getType() == DestTy)
445 if (Constant *VC = dyn_cast<Constant>(V))
446 return Folder.CreateIntCast(VC, DestTy, isSigned);
447 return Insert(CastInst::CreateIntegerCast(V, DestTy, isSigned), Name);
450 //===--------------------------------------------------------------------===//
451 // Instruction creation methods: Compare Instructions
452 //===--------------------------------------------------------------------===//
454 Value *CreateICmpEQ(Value *LHS, Value *RHS, const char *Name = "") {
455 return CreateICmp(ICmpInst::ICMP_EQ, LHS, RHS, Name);
457 Value *CreateICmpNE(Value *LHS, Value *RHS, const char *Name = "") {
458 return CreateICmp(ICmpInst::ICMP_NE, LHS, RHS, Name);
460 Value *CreateICmpUGT(Value *LHS, Value *RHS, const char *Name = "") {
461 return CreateICmp(ICmpInst::ICMP_UGT, LHS, RHS, Name);
463 Value *CreateICmpUGE(Value *LHS, Value *RHS, const char *Name = "") {
464 return CreateICmp(ICmpInst::ICMP_UGE, LHS, RHS, Name);
466 Value *CreateICmpULT(Value *LHS, Value *RHS, const char *Name = "") {
467 return CreateICmp(ICmpInst::ICMP_ULT, LHS, RHS, Name);
469 Value *CreateICmpULE(Value *LHS, Value *RHS, const char *Name = "") {
470 return CreateICmp(ICmpInst::ICMP_ULE, LHS, RHS, Name);
472 Value *CreateICmpSGT(Value *LHS, Value *RHS, const char *Name = "") {
473 return CreateICmp(ICmpInst::ICMP_SGT, LHS, RHS, Name);
475 Value *CreateICmpSGE(Value *LHS, Value *RHS, const char *Name = "") {
476 return CreateICmp(ICmpInst::ICMP_SGE, LHS, RHS, Name);
478 Value *CreateICmpSLT(Value *LHS, Value *RHS, const char *Name = "") {
479 return CreateICmp(ICmpInst::ICMP_SLT, LHS, RHS, Name);
481 Value *CreateICmpSLE(Value *LHS, Value *RHS, const char *Name = "") {
482 return CreateICmp(ICmpInst::ICMP_SLE, LHS, RHS, Name);
485 Value *CreateFCmpOEQ(Value *LHS, Value *RHS, const char *Name = "") {
486 return CreateFCmp(FCmpInst::FCMP_OEQ, LHS, RHS, Name);
488 Value *CreateFCmpOGT(Value *LHS, Value *RHS, const char *Name = "") {
489 return CreateFCmp(FCmpInst::FCMP_OGT, LHS, RHS, Name);
491 Value *CreateFCmpOGE(Value *LHS, Value *RHS, const char *Name = "") {
492 return CreateFCmp(FCmpInst::FCMP_OGE, LHS, RHS, Name);
494 Value *CreateFCmpOLT(Value *LHS, Value *RHS, const char *Name = "") {
495 return CreateFCmp(FCmpInst::FCMP_OLT, LHS, RHS, Name);
497 Value *CreateFCmpOLE(Value *LHS, Value *RHS, const char *Name = "") {
498 return CreateFCmp(FCmpInst::FCMP_OLE, LHS, RHS, Name);
500 Value *CreateFCmpONE(Value *LHS, Value *RHS, const char *Name = "") {
501 return CreateFCmp(FCmpInst::FCMP_ONE, LHS, RHS, Name);
503 Value *CreateFCmpORD(Value *LHS, Value *RHS, const char *Name = "") {
504 return CreateFCmp(FCmpInst::FCMP_ORD, LHS, RHS, Name);
506 Value *CreateFCmpUNO(Value *LHS, Value *RHS, const char *Name = "") {
507 return CreateFCmp(FCmpInst::FCMP_UNO, LHS, RHS, Name);
509 Value *CreateFCmpUEQ(Value *LHS, Value *RHS, const char *Name = "") {
510 return CreateFCmp(FCmpInst::FCMP_UEQ, LHS, RHS, Name);
512 Value *CreateFCmpUGT(Value *LHS, Value *RHS, const char *Name = "") {
513 return CreateFCmp(FCmpInst::FCMP_UGT, LHS, RHS, Name);
515 Value *CreateFCmpUGE(Value *LHS, Value *RHS, const char *Name = "") {
516 return CreateFCmp(FCmpInst::FCMP_UGE, LHS, RHS, Name);
518 Value *CreateFCmpULT(Value *LHS, Value *RHS, const char *Name = "") {
519 return CreateFCmp(FCmpInst::FCMP_ULT, LHS, RHS, Name);
521 Value *CreateFCmpULE(Value *LHS, Value *RHS, const char *Name = "") {
522 return CreateFCmp(FCmpInst::FCMP_ULE, LHS, RHS, Name);
524 Value *CreateFCmpUNE(Value *LHS, Value *RHS, const char *Name = "") {
525 return CreateFCmp(FCmpInst::FCMP_UNE, LHS, RHS, Name);
528 Value *CreateICmp(CmpInst::Predicate P, Value *LHS, Value *RHS,
529 const char *Name = "") {
530 if (Constant *LC = dyn_cast<Constant>(LHS))
531 if (Constant *RC = dyn_cast<Constant>(RHS))
532 return Folder.CreateICmp(P, LC, RC);
533 return Insert(new ICmpInst(P, LHS, RHS), Name);
535 Value *CreateFCmp(CmpInst::Predicate P, Value *LHS, Value *RHS,
536 const char *Name = "") {
537 if (Constant *LC = dyn_cast<Constant>(LHS))
538 if (Constant *RC = dyn_cast<Constant>(RHS))
539 return Folder.CreateFCmp(P, LC, RC);
540 return Insert(new FCmpInst(P, LHS, RHS), Name);
543 Value *CreateVICmp(CmpInst::Predicate P, Value *LHS, Value *RHS,
544 const char *Name = "") {
545 if (Constant *LC = dyn_cast<Constant>(LHS))
546 if (Constant *RC = dyn_cast<Constant>(RHS))
547 return Folder.CreateVICmp(P, LC, RC);
548 return Insert(new VICmpInst(P, LHS, RHS), Name);
550 Value *CreateVFCmp(CmpInst::Predicate P, Value *LHS, Value *RHS,
551 const char *Name = "") {
552 if (Constant *LC = dyn_cast<Constant>(LHS))
553 if (Constant *RC = dyn_cast<Constant>(RHS))
554 return Folder.CreateVFCmp(P, LC, RC);
555 return Insert(new VFCmpInst(P, LHS, RHS), Name);
558 //===--------------------------------------------------------------------===//
559 // Instruction creation methods: Other Instructions
560 //===--------------------------------------------------------------------===//
562 PHINode *CreatePHI(const Type *Ty, const char *Name = "") {
563 return Insert(PHINode::Create(Ty), Name);
566 CallInst *CreateCall(Value *Callee, const char *Name = "") {
567 return Insert(CallInst::Create(Callee), Name);
569 CallInst *CreateCall(Value *Callee, Value *Arg, const char *Name = "") {
570 return Insert(CallInst::Create(Callee, Arg), Name);
572 CallInst *CreateCall2(Value *Callee, Value *Arg1, Value *Arg2,
573 const char *Name = "") {
574 Value *Args[] = { Arg1, Arg2 };
575 return Insert(CallInst::Create(Callee, Args, Args+2), Name);
577 CallInst *CreateCall3(Value *Callee, Value *Arg1, Value *Arg2, Value *Arg3,
578 const char *Name = "") {
579 Value *Args[] = { Arg1, Arg2, Arg3 };
580 return Insert(CallInst::Create(Callee, Args, Args+3), Name);
582 CallInst *CreateCall4(Value *Callee, Value *Arg1, Value *Arg2, Value *Arg3,
583 Value *Arg4, const char *Name = "") {
584 Value *Args[] = { Arg1, Arg2, Arg3, Arg4 };
585 return Insert(CallInst::Create(Callee, Args, Args+4), Name);
588 template<typename InputIterator>
589 CallInst *CreateCall(Value *Callee, InputIterator ArgBegin,
590 InputIterator ArgEnd, const char *Name = "") {
591 return Insert(CallInst::Create(Callee, ArgBegin, ArgEnd), Name);
594 Value *CreateSelect(Value *C, Value *True, Value *False,
595 const char *Name = "") {
596 if (Constant *CC = dyn_cast<Constant>(C))
597 if (Constant *TC = dyn_cast<Constant>(True))
598 if (Constant *FC = dyn_cast<Constant>(False))
599 return Folder.CreateSelect(CC, TC, FC);
600 return Insert(SelectInst::Create(C, True, False), Name);
603 VAArgInst *CreateVAArg(Value *List, const Type *Ty, const char *Name = "") {
604 return Insert(new VAArgInst(List, Ty), Name);
607 Value *CreateExtractElement(Value *Vec, Value *Idx,
608 const char *Name = "") {
609 if (Constant *VC = dyn_cast<Constant>(Vec))
610 if (Constant *IC = dyn_cast<Constant>(Idx))
611 return Folder.CreateExtractElement(VC, IC);
612 return Insert(new ExtractElementInst(Vec, Idx), Name);
615 Value *CreateInsertElement(Value *Vec, Value *NewElt, Value *Idx,
616 const char *Name = "") {
617 if (Constant *VC = dyn_cast<Constant>(Vec))
618 if (Constant *NC = dyn_cast<Constant>(NewElt))
619 if (Constant *IC = dyn_cast<Constant>(Idx))
620 return Folder.CreateInsertElement(VC, NC, IC);
621 return Insert(InsertElementInst::Create(Vec, NewElt, Idx), Name);
624 Value *CreateShuffleVector(Value *V1, Value *V2, Value *Mask,
625 const char *Name = "") {
626 if (Constant *V1C = dyn_cast<Constant>(V1))
627 if (Constant *V2C = dyn_cast<Constant>(V2))
628 if (Constant *MC = dyn_cast<Constant>(Mask))
629 return Folder.CreateShuffleVector(V1C, V2C, MC);
630 return Insert(new ShuffleVectorInst(V1, V2, Mask), Name);
633 Value *CreateExtractValue(Value *Agg, unsigned Idx,
634 const char *Name = "") {
635 if (Constant *AggC = dyn_cast<Constant>(Agg))
636 return Folder.CreateExtractValue(AggC, &Idx, 1);
637 return Insert(ExtractValueInst::Create(Agg, Idx), Name);
640 template<typename InputIterator>
641 Value *CreateExtractValue(Value *Agg,
642 InputIterator IdxBegin,
643 InputIterator IdxEnd,
644 const char *Name = "") {
645 if (Constant *AggC = dyn_cast<Constant>(Agg))
646 return Folder.CreateExtractValue(AggC, IdxBegin, IdxEnd - IdxBegin);
647 return Insert(ExtractValueInst::Create(Agg, IdxBegin, IdxEnd), Name);
650 Value *CreateInsertValue(Value *Agg, Value *Val, unsigned Idx,
651 const char *Name = "") {
652 if (Constant *AggC = dyn_cast<Constant>(Agg))
653 if (Constant *ValC = dyn_cast<Constant>(Val))
654 return Folder.CreateInsertValue(AggC, ValC, &Idx, 1);
655 return Insert(InsertValueInst::Create(Agg, Val, Idx), Name);
658 template<typename InputIterator>
659 Value *CreateInsertValue(Value *Agg, Value *Val,
660 InputIterator IdxBegin,
661 InputIterator IdxEnd,
662 const char *Name = "") {
663 if (Constant *AggC = dyn_cast<Constant>(Agg))
664 if (Constant *ValC = dyn_cast<Constant>(Val))
665 return Folder.CreateInsertValue(AggC, ValC,
666 IdxBegin, IdxEnd - IdxBegin);
667 return Insert(InsertValueInst::Create(Agg, Val, IdxBegin, IdxEnd), Name);
670 //===--------------------------------------------------------------------===//
671 // Utility creation methods
672 //===--------------------------------------------------------------------===//
674 /// CreateIsNull - Return an i1 value testing if \arg Arg is null.
675 Value *CreateIsNull(Value *Arg, const char *Name = "") {
676 return CreateICmpEQ(Arg, Constant::getNullValue(Arg->getType()),
680 /// CreateIsNotNull - Return an i1 value testing if \arg Arg is not null.
681 Value *CreateIsNotNull(Value *Arg, const char *Name = "") {
682 return CreateICmpNE(Arg, Constant::getNullValue(Arg->getType()),
686 /// CreatePtrDiff - Return the i64 difference between two pointer values,
687 /// dividing out the size of the pointed-to objects. This is intended to
688 /// implement C-style pointer subtraction.
689 Value *CreatePtrDiff(Value *LHS, Value *RHS, const char *Name = "") {
690 assert(LHS->getType() == RHS->getType() &&
691 "Pointer subtraction operand types must match!");
692 const PointerType *ArgType = cast<PointerType>(LHS->getType());
693 Value *LHS_int = CreatePtrToInt(LHS, Type::Int64Ty);
694 Value *RHS_int = CreatePtrToInt(RHS, Type::Int64Ty);
695 Value *Difference = CreateSub(LHS_int, RHS_int);
696 return CreateSDiv(Difference,
697 ConstantExpr::getSizeOf(ArgType->getElementType()),