search for: createstore

Since the getelementptrs were implicitly generated by the CreateStore/Load I'm not sure how to get access to them. So I hacked the assignment to be done thrice: once using a manual decomposition into two GEPs and stores, once using the "big" CreateStore, once via the setGlobal function, printing addresses and memory contents at each point to the degree...

...type { i8*, i32 } define dllexport void @setGlobal(%Any* %ptr, %Any %value) { store %Any %value, %Any* %ptr ret void } define dllexport %Any @getGlobal(%Any* %ptr) { %val = load %Any, %Any* %ptr ret %Any %val } Trying to replace the setGlobal call with what should be equivalent builder.CreateStore(value, ptr) results in what should end up in the second (i32) slot being stored in the first (i8*). I've added ::dump() calls where the CreateStore is, and this is what I get: { i8*, i32 } { i8* @FixnumClass, i32 32 } ; for value @foo = external global { i8*, i32 } ; for ptr Even more bizar...

...use of the different contexts. And this is where I could need help. The special case I am stuck at is about storing a value in a global variable. Here is some code: IRBuilder<> builder(pi); Value *elem = builder.CreateCall(...); Value *elem_ptr = builder.CreateGEP(global_array, idx); builder.CreateStore(get_crypted_funcptr(func, builder), elem_ptr); I get a IRBuilder before some instruction (pi) in main. The element I want to store (elem) is created by some call instruction which I create via the builder. To store elem in global_array, I need a pointer, which I get via a GEP instruction which is...

...p = 02F80000 > class: 028D3E98 > datum: 0000007B > > Cheers, > > -- nikodemus > > > On Mon, Jun 5, 2017 at 10:57 PM, Nikodemus Siivola < > nikodemus at random-state.net> wrote: > >> Since the getelementptrs were implicitly generated by the >> CreateStore/Load I'm not sure how to get access to them. >> >> So I hacked the assignment to be done thrice: once using a manual >> decomposition into two GEPs and stores, once using the "big" CreateStore, >> once via the setGlobal function, printing addresses and memory c...

...s Visual Studio 2010. Both debug and release builds are affected. The variables are created en-block at the beginning of the function with code looking like for (i=0; i<513; ++i) { AllocaInst *variable = mBuilder.CreateAlloca(Type::getInt64Ty(mContext),0,""); mBuilder.CreateStore(GetConstI("INT4_8",0),variable); } We have not yet looked at the compiled machine code (same on Win 7 and 8, or differs?). But the 4k limit made us suspicious, as there were some bug reports - some still open - regarding this limit with LLVM [1,2]. So the question is - before digging...

...ant to create an array via an Alloca instruction like: Value *a = ir_builder.CreateAlloca( my_type, my_size ); and then I want to initialize each element of the array with values computed elsewhere like: for ( vector<Value*>::const_iterator i = v.begin(); i != v.end(); ++i ) { builder.CreateStore( *i, a ); // How do I increment 'a' to point to the next element? } how do I increment 'a' to point to the next element (taking the size of my_type into account) so that each store instruction stores in successive elements? - Paul

...fore both variants // CODE FOR VARIANT #1 auto cf = IRB.CreateICmpEQ(Incr, ConstantInt::get(Int8Ty, 0)); Incr = IRB.CreateAdd(Incr, cf); // CODE FOR VARIANT #2 auto cf = IRB.CreateICmpULT(Incr, ConstantInt::get(Int8Ty, 1)); Incr = IRB.CreateAdd(Incr, cf); // vvv same code after both variants IRB.CreateStore(Incr, MapPtrIdx)->setMetadata(M.getMDKindID("nosanitize"), MDNode::get(C, None)); StoreInst *Store = IRB.CreateStore(ConstantInt::get(Int32Ty, cur_loc >> 1), AFLPrevLoc); Store->setMetadata(M.getMDKindID("nosanitize"), MDNode::get(C, None)); // ^^^ same code after bo...

...eers, >>> >>> -- nikodemus >>> >>> >>> On Mon, Jun 5, 2017 at 10:57 PM, Nikodemus Siivola < >>> nikodemus at random-state.net> wrote: >>> >>>> Since the getelementptrs were implicitly generated by the >>>> CreateStore/Load I'm not sure how to get access to them. >>>> >>>> So I hacked the assignment to be done thrice: once using a manual >>>> decomposition into two GEPs and stores, once using the "big" CreateStore, >>>> once via the setGlobal function,...

...t;>> >>>>> >>>>> On Mon, Jun 5, 2017 at 10:57 PM, Nikodemus Siivola < >>>>> nikodemus at random-state.net> wrote: >>>>> >>>>>> Since the getelementptrs were implicitly generated by the >>>>>> CreateStore/Load I'm not sure how to get access to them. >>>>>> >>>>>> So I hacked the assignment to be done thrice: once using a manual >>>>>> decomposition into two GEPs and stores, once using the "big" CreateStore, >>>>>>...

...CmpEQ(Incr, ConstantInt::get(Int8Ty, 0)); > Incr = IRB.CreateAdd(Incr, cf); > > // CODE FOR VARIANT #2 > auto cf = IRB.CreateICmpULT(Incr, ConstantInt::get(Int8Ty, 1)); > Incr = IRB.CreateAdd(Incr, cf); > > // vvv same code after both variants > IRB.CreateStore(Incr, > MapPtrIdx)->setMetadata(M.getMDKindID("nosanitize"), MDNode::get(C, > None)); > StoreInst *Store = IRB.CreateStore(ConstantInt::get(Int32Ty, cur_loc >> > 1), AFLPrevLoc); > Store->setMetadata(M.getMDKindID("nosanitize"), MDN...

...; Builder(I->getContext()); Builder.SetInsertPoint(I->getNextNode()); GlobalVariable* key = I->getModule()->getNamedGlobal("globalKey"); if (key) { LoadInst* load = Builder.CreateLoad(key); Value* inc = Builder.CreateAdd(load, Builder.getInt64(1)); StoreInst* store = Builder.CreateStore(inc, key); return store; } return I; } Instruction* InstructionVisitor::print(Instruction* I, const char* text, Value* arg1, Value* arg2, Value* arg3, Value* arg4) { Function* printfFn = I->getModule()->getFunction("printf"); if (printfFn) { IRBuilder<> Builder(I->getConte...

Hi all, I have this problem: I'm using LLVM's C++ API, mostly `IRBuilder<>` to generate code. Some of the generated code is just storing constant data to a location provided as a function argument. Something like `ir_builder.CreateStore(get_default_data(), ptrValue)` where `get_default_data()` may return a `ConstantArray` of `i8` and `ptrValue` is a function argument. Looking at the generated assembly, it seems inefficient, it generates a separate instruction for storing each byte relative to the pointer. Each instruction take...

...alueSymbolTable* vst = first_block->getValueSymbolTable(); IRBuilder <> builder(first_block); for (ValueSymbolTable::iterator vst_it = vst->begin(); vst_it != vst->end(); vst_it++) { AllocaInst* store_var = builder.CreateAlloca(type, 0,my_name.c_str()); builder.CreateStore(symbol, store_var, true); } //Put a terminator on the block builder.CreateRetVoid(); This builds fine, but I get dominator issues when I try to test it with opt. I'm sure that I just don't understand all of the constraints on the IR, but I would appreciate it if anyone can point...

...(I->getContext());Builder.SetInsertPoint(I->getNextNode()); GlobalVariable* key = I->getModule()->getNamedGlobal("globalKey"); if (key) { LoadInst* load = Builder.CreateLoad(key); Value* inc = Builder.CreateAdd(load, Builder.getInt64(1)); StoreInst* store = Builder.CreateStore(inc, key);} I print that global variable during execution of instrumented code. I access it's value by key->getOperand(0), but it's unchanged. I'm using ORC JIT based on this tutorial: https://llvm.org/docs/tutorial/BuildingAJIT2.html and I run ModulePass from optimizeModule functio...

...>> >> The variables are created en-block at the beginning of the function >> with code looking like >> >> for (i=0; i<513; ++i) { >> AllocaInst *variable = >> mBuilder.CreateAlloca(Type::getInt64Ty(mContext),0,""); >> mBuilder.CreateStore(GetConstI("INT4_8",0),variable); >> } >> >> We have not yet looked at the compiled machine code (same on Win 7 and >> 8, or differs?). But the 4k limit made us suspicious, as there were >> some bug reports - some still open - regarding this limit with LLVM &g...

Hello all, I would like to create a new StoreInst into a basic block. I found that I could use methods like ConstantInt::get() to provide the Value* for the first argument of the constructor of the StoreInst, but I don't know how to provide the second one. For example, if I would to do x = 1, I would like to create the "Value" object of "x" for the second argument. I

...): > llvm::LandingPadInst *caughtResult = > builder.CreateLandingPad(ourCaughtResultType, > personality, > numExceptionsToCatch, > "landingPad"); > // ... > > builder.CreateStore(caughtResult, caughtResultStorage); Then on line 1255: > builder.CreateResume(builder.CreateLoad(caughtResultStorage)); Are you saying that code is wrong too? - Paul

I'm getting frustrated by assertions whenever I create a store inst (via builder CreateStore). I get the error "Ptr must be a pointer to Val type!" My destination is a pointer to an equivalent to the source type. The problem is that the types were created via different generation paths and the underlying structure is a distinct object (with the exact same fields). I seem to reca...

...tr_y, false, basicBlock); Using an IRBuilder, something like the following (uncompiled, but it's at least approximately right): Value* x = Builder.CreateLoad(ptr_x); Function* rcpps = Intrinsic::getDeclaration(Module, Intrinsic::x86_sse_rcp_ps); Value* y = Builder.CreateCall(rcpps, x); Builder.CreateStore(y, ptr_y); > Somewhat related to this, I'd also like to know how to 'reinterpret_cast' > values. It can be quite useful to sometimes interpret a vector of > floating-point values as a vector of integers (for instance to extract the > sign, exponent and/or mantissa bits). An...

...@print(double) ; ================== END The function call is, then: // Number 10 Value* value = ConstantFP::get(getGlobalContext(), APFloat(10.0)); // Variable var is double Value* var = builder.CreateAlloca(Type::getDoubleTy(getGlobalContext()), 0, "var"); // Assign it value 10 builder.CreateStore(value, var); // Create a call to the function, passing a double var builder.CreateCall(printFunction, var, "print"); If var is DoubleTy and the arg is expecting DoubleTy, why is the assert failing? I've tried creating a vector with the var inside and create the function as below,...