search for: dyn_cast

...ternatives? Thanks, Hideki ----------- Relevant background info http://lists.llvm.org/pipermail/llvm-dev/2018-January/120164.html if anyone is curious about my cleanup work. ------------- Analysis/Delinearization.cpp static Value *getPointerOperand(Instruction &Inst) { if (LoadInst *Load = dyn_cast<LoadInst>(&Inst)) return Load->getPointerOperand(); else if (StoreInst *Store = dyn_cast<StoreInst>(&Inst)) return Store->getPointerOperand(); else if (GetElementPtrInst *Gep = dyn_cast<GetElementPtrInst>(&Inst)) return Gep->getPointerOperand()...

...- > Relevant background info > http://lists.llvm.org/pipermail/llvm-dev/2018-January/120164.html > if anyone is curious about my cleanup work. > > ------------- Analysis/Delinearization.cpp > > static Value *getPointerOperand(Instruction &Inst) { > if (LoadInst *Load = dyn_cast<LoadInst>(&Inst)) > return Load->getPointerOperand(); > else if (StoreInst *Store = dyn_cast<StoreInst>(&Inst)) > return Store->getPointerOperand(); > else if (GetElementPtrInst *Gep = dyn_cast<GetElementPtrInst>(&Inst)) > return Ge...

Been having a bit of a problem with dyn_cast: Suppose I have a class A that inherits from two base classes, both of which support dyn_cast. In order to use dyn_cast on A, I need to do a bunch of extra work: 1) Since dyn_cast uses reinterpret_cast rather than static_cast, the pointer value won't get adjusted by the cast operation, maki...

...ction that returns the pointer operand of a load or store /// instruction. static Value *getPointerOperand(Value *I) { if (auto *LI = dyn_cast<LoadInst>(I)) return LI->getPointerOperand(); if (auto *SI = dyn_cast<StoreInst>(I)) return SI->getPointerOperand(); return nullptr; } /// A helper function that returns the type of loaded or stored value....

On Fri, Sep 03, 2004 at 03:01:01PM -0500, Anshu Dasgupta wrote: > ><snip> > >for (BasicBlock::iterator I = Dest->begin(); PHINode *PN = > >dyn_cast<PHINode>(I); ++I) > > visitPHINode(*PN); > ><snip> > > > >build_vc71\lib\Transforms\Scalar\SCCP.cpp(202) : error C2275: > >'llvm::PHINode' : illegal use of this type as an expression > > > >but I think is a NO-NO, so suggestions? &gt...

It appears that LLVM has quite a number of dyn_casts (which I find quite natural) The suggested idiom: if (ConstantExpr* ce = dyn_cast<ConstantExpr>(*j)) { } is fine, and IIRC even used in TC++PL, but it occured to me that we can do even better: if (dyn_caster<ConstantExpr> ce = *j) { } where dyn_caster is defined lik...

LLVM has a relatively large number of proprietary replacements for standard C++ functions and classes. One of these is dyn_cast to replace dynamic_cast. The two calls appear to be semantically equivalent; the only difference that I can see is that dyn_cast reportedly works on classes that have no v-table [1]. Could someone please explain why I should use dyn_cast instead of dynamic_cast? (I thought all classes hav...

...us llvm/include/llvm/IR/InstrTypes.h:617: error: call of overloaded `cast(const llvm::Value*&)' is ambiguous llvm/include/llvm/IR/InstrTypes.h:822: error: call of overloaded `cast(const llvm::Value*&)' is ambiguous llvm/include/llvm/IR/InstrTypes.h:827: error: call of overloaded `dyn_cast(llvm::Type*&)' is ambiguous llvm/include/llvm/Support/Casting.h:249: error: call of overloaded `cast(llvm::Value*&)' is ambiguous llvm/lib/Support/YAMLTraits.cpp:88: error: call of overloaded `dyn_cast(llvm::yaml::Input::HNode*&)' is ambiguous llvm/lib/Support/YAMLTraits....

On Nov 12, 2010, at 5:57 PM, Óscar Fuentes wrote: >> Could someone >> please explain why I should use dyn_cast instead of dynamic_cast? (I >> thought all classes have v-tables...) Thanks, > > For reducing executable size, LLVM builds with RTTI disabled where > possible. Right, but how does that relate to dyn_cast? I thought v-tables were present even when RTTI is not (because otherwise pol...

...--------------------------- > ===// > + > + template<typename InputIterator> > + Value *CreateGEP(Value *Ptr, InputIterator IdxBegin, > + InputIterator IdxEnd, const char > *Name = "") { > +#if RICH > + if (Constant *PC = dyn_cast<Constant>(Ptr)) { > + // Every index must be constant. > + InputIterator i; > + for (i = IdxBegin; i < IdxEnd; ++i) { > + if (!dyn_cast<Constant>(*i)) { > + break; > + } > + } > + if (i == IdxEnd) { > + return...

I can confirm that both are compiled properly: A) PHINode *PN; for (BasicBlock::iterator I = H->begin(); PN = dyn_cast<PHINode>(I); I++) .... B) for (BasicBlock::iterator I = H->begin; isa<PHINode>(I); I++) { PHINode *PN = cast<PHINode(I); .... } I'll make a patch for whatever solution do you prefer (this problem is a showstopper for more than a dozen files...) --- Paolo I...

Trevor Harmon <Trevor.W.Harmon at nasa.gov> writes: [snip] > Could someone > please explain why I should use dyn_cast instead of dynamic_cast? (I > thought all classes have v-tables...) Thanks, For reducing executable size, LLVM builds with RTTI disabled where possible.

I am trying to dyn_cast a Value* to a BitCastInst. The dump of what I want casted is "i8* bitcast (i32 (i32)* @f1 to i8*)", so it is a BitCastInst. For someone my dyn_cast always fails, does anyone see why? arg->dump(); BitCastInst *bitcast = dyn_cast<BitCastInst>(arg); assert(b...

...sicBlock::const_iterator I = BB.begin(); BasicBlock::const_iterator E = BB.end(); BasicBlock::const_iterator prev_iter,last_iter; prev_iter = NULL; last_iter = NULL; for(;I!=E;I++){ prev_iter = last_iter; last_iter = I; } if(prev_iter){ errs() << "prev_iter: " << *(dyn_cast<Instruction>(prev_iter)) << "\n"; } if(last_iter){ errs() << "last_iter: " << *(dyn_cast<Instruction>(last_iter)) << "\n"; } // not related to the main question: uncomment the next line for an unusual behavior: lastlast is DIFFER...

Devang Patel wrote: > On Dec 15, 2007, at 12:15 PM, Richard Pennington wrote: > >> I got the current version of LLVM via svn yesterday and modified my >> code to >> use the LLVMFoldingBuilder. Very nice! >> >> My question is this: I noticed that the folding builder doesn't fold >> some >> operations, e.g. casts. Is there some reason why? If

> It won't cause a negative effect, go for it! Dynamic_cast is realllly slow compared to dyn_cast, it is worth the memory. Ok, here's the first batch. It converts the RecTy hierarchy over to use LLVM-style RTTI. Along the way, I also wrote up a new doc "How to set up LLVM-style RTTI for your class hierarchy", which covers the previously undocumented (albeit not that complicated)...

Sorry I got really overwhelmed by so many classes and member functions in LLVM. So would you please clarify some problems I have? 1. If I see this instruction in the function. %S.i = alloca %struct.SimpleStruct Suppose SimpleStruct is as following: struct.SimpleStruct = type { int, double } When I read the instruction, how can I know the type of simplstruct, should I use 'getType'

Hi, Artur > + if (isa<ConstantExpr>(I->constant)){ > + const ConstantExpr *CE = > dyn_cast<ConstantExpr>(I->constant); > + printConstantExpr(CE); > + ty = CE->getType(); > + } else { > + const Function * F = dyn_cast<Function>(I->constant); > + printValueLoad(F); > + ty = F->getType(); > +...

Hi Paolo, > <snip> > for (BasicBlock::iterator I = Dest->begin(); PHINode *PN = > dyn_cast<PHINode>(I); ++I) > visitPHINode(*PN); > <snip> > > build_vc71\lib\Transforms\Scalar\SCCP.cpp(202) : error C2275: > 'llvm::PHINode' : illegal use of this type as an expression > > but I think is a NO-NO, so suggestions? Since it's fussy about a dec...

...i post it here in case it is interesting for someone. on my wish list there is still an option for target independent optimizations to have x * 0 = 0. -Jochen static void getIntVector(Value* value, SmallVector<int, 8>& values) { if (llvm::ConstantVector* constantVector = llvm::dyn_cast<llvm::ConstantVector>(value)) { // get components llvm::SmallVector<llvm::Constant*, 8> elements; constantVector->getVectorElements(elements); int numElements = int(elements.size()); for (int i = 0; i < numElements; ++i) {...