search for: createinttoptr

That seems to work, thanks! The specific code I ended up with to call int64_t print(int64_t) looks like: auto f = builder.CreateIntToPtr( ConstantInt::get(builder.getInt64Ty(), uintptr_t(print)), PointerType::getUnqual(FunctionType::get( builder.getInt64Ty(), {builder.getInt64Ty()}, false))); return builder.CreateCall(f, args); On Mon, Mar 28, 2016 at 1:40 PM, Caldarale, Charles R &l...

...it seems to me that it should be possible to use a more efficient and > portable solution that takes advantage of the fact that you already have an actual pointer > to cos, even if you haven't linked with debugging symbols. Perhaps not the most elegant, but we simply use the IRBuilder.CreateIntToPtr() method to construct the Callee argument for IRBuilder.CreateCall(). The first argument for CreateIntToPtr() comes from ConstantInt::get(I64, uintptr_t(ptr)), while the second is a function type pointer defined by using PointerType::get() on the result of FunctionType::get() with the appropriate...

...alyze IR. I recommend leaving everything symbolic until link time if you can. Philip On 03/28/2016 06:33 PM, Russell Wallace via llvm-dev wrote: > That seems to work, thanks! The specific code I ended up with to call > int64_t print(int64_t) looks like: > > auto f = builder.CreateIntToPtr( > ConstantInt::get(builder.getInt64Ty(), uintptr_t(print)), > PointerType::getUnqual(FunctionType::get( > builder.getInt64Ty(), {builder.getInt64Ty()}, false))); > return builder.CreateCall(f, args); > > > On Mon, Mar 28, 2016 at...

...ving everything symbolic until link time if you can. > > Philip > > > On 03/28/2016 06:33 PM, Russell Wallace via llvm-dev wrote: > > That seems to work, thanks! The specific code I ended up with to call > int64_t print(int64_t) looks like: > > auto f = builder.CreateIntToPtr( > ConstantInt::get(builder.getInt64Ty(), uintptr_t(print)), > PointerType::getUnqual(FunctionType::get( > builder.getInt64Ty(), {builder.getInt64Ty()}, false))); > return builder.CreateCall(f, args); > > > On Mon, Mar 28, 2016 at...

In the context of a JIT compiler, what's the recommended way to generate a call to an existing function, that is, not one that you are generating on-the-fly with LLVM, but one that's already linked into your program? For example the cosine function (from the standard math library); the Kaleidoscope tutorial recommends looking it up by name with dlsym("cos"), but it seems to me

...f you can. >> >> Philip >> >> >>> On 03/28/2016 06:33 PM, Russell Wallace via llvm-dev wrote: >>> That seems to work, thanks! The specific code I ended up with to call int64_t print(int64_t) looks like: >>> >>> auto f = builder.CreateIntToPtr( >>> ConstantInt::get(builder.getInt64Ty(), uintptr_t(print)), >>> PointerType::getUnqual(FunctionType::get( >>> builder.getInt64Ty(), {builder.getInt64Ty()}, false))); >>> return builder.CreateCall(f, args); >&g...

...if you can. >> >> Philip >> >> >> On 03/28/2016 06:33 PM, Russell Wallace via llvm-dev wrote: >> >> That seems to work, thanks! The specific code I ended up with to call >> int64_t print(int64_t) looks like: >> >> auto f = builder.CreateIntToPtr( >> ConstantInt::get(builder.getInt64Ty(), uintptr_t(print)), >> PointerType::getUnqual(FunctionType::get( >> builder.getInt64Ty(), {builder.getInt64Ty()}, false))); >> return builder.CreateCall(f, args); >> >> >...

...for us: std::vector<Type*> margs; FunctionType* fType; PointerType* pm3_routine; Value* m3func; Value* result; margs.resize(1); margs[0] = I64; fType = FunctionType::get(I32, margs, false); pm3_routine = PointerType::get(fType, 0); m3func = Builder.CreateIntToPtr(I64_Const((uint64_t)pFunc), pm3_routine, "pm3func"); result = Builder.CreateCall(m3func, parameter, "m3func"); - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received th...

...gt;> >>>> On 03/28/2016 06:33 PM, Russell Wallace via llvm-dev wrote: >>>> >>>> That seems to work, thanks! The specific code I ended up with to call >>>> int64_t print(int64_t) looks like: >>>> >>>> auto f = builder.CreateIntToPtr( >>>> ConstantInt::get(builder.getInt64Ty(), uintptr_t(print)), >>>> PointerType::getUnqual(FunctionType::get( >>>> builder.getInt64Ty(), {builder.getInt64Ty()}, false))); >>>> return builder.CreateCall(...

...hilip >>> >>> >>> On 03/28/2016 06:33 PM, Russell Wallace via llvm-dev wrote: >>> >>> That seems to work, thanks! The specific code I ended up with to call >>> int64_t print(int64_t) looks like: >>> >>> auto f = builder.CreateIntToPtr( >>> ConstantInt::get(builder.getInt64Ty(), uintptr_t(print)), >>> PointerType::getUnqual(FunctionType::get( >>> builder.getInt64Ty(), {builder.getInt64Ty()}, false))); >>> return builder.CreateCall(f, args); >&g...

...gt;> >> >> On 03/28/2016 06:33 PM, Russell Wallace via llvm-dev wrote: >>> That seems to work, thanks! The specific code I ended up >>> with to call int64_t print(int64_t) looks like: >>> >>> auto f = builder.CreateIntToPtr( >>> ConstantInt::get(builder.getInt64Ty(), uintptr_t(print)), >>> PointerType::getUnqual(FunctionType::get( >>> builder.getInt64Ty(), {builder.getInt64Ty()}, false))); >>> return builder.CreateCall(f, args); >>> &...

I have a function address held in an uint64_t. I would like to cast the function address to a function prototype and create a call to the function in LLVM. How could I do this ? Thanks Xin

...> On 03/28/2016 06:33 PM, Russell Wallace via llvm-dev wrote: >>>>> >>>>> That seems to work, thanks! The specific code I ended up with to call >>>>> int64_t print(int64_t) looks like: >>>>> >>>>> auto f = builder.CreateIntToPtr( >>>>> ConstantInt::get(builder.getInt64Ty(), uintptr_t(print)), >>>>> PointerType::getUnqual(FunctionType::get( >>>>> builder.getInt64Ty(), {builder.getInt64Ty()}, false))); >>>>> return bui...

...On 03/28/2016 06:33 PM, Russell Wallace via llvm-dev wrote: >>>> That seems to work, thanks! The specific code I ended >>>> up with to call int64_t print(int64_t) looks like: >>>> >>>> auto f = builder.CreateIntToPtr( >>>> ConstantInt::get(builder.getInt64Ty(), uintptr_t(print)), >>>> PointerType::getUnqual(FunctionType::get( >>>> builder.getInt64Ty(), {builder.getInt64Ty()}, false))); >>>> return builder.CreateCall(...

...v wrote: >>>>> That seems to work, thanks! The specific code I >>>>> ended up with to call int64_t print(int64_t) looks >>>>> like: >>>>> >>>>> auto f = builder.CreateIntToPtr( >>>>> ConstantInt::get(builder.getInt64Ty(), >>>>> uintptr_t(print)), >>>>> PointerType::getUnqual(FunctionType::get( >>>>> builder.getInt64Ty(), {builder.getInt64Ty()}, >...

Dear All I'm making an instrumentation pass. The pass is supposed to modify the given IR in a specefic way. One of the required modifications is to insert a call to a function at a specific location. This is the signature of the called function: void myclass::foo(Function *f, BasicBlock* b) This function's prototype is in an foofile.h file in include/llvm And the function

...o I'm implementing a new intrinsic: def int_setreturnaddress : Intrinsic<[], [llvm_i32_ty, llvm_ptr_ty], []>; And I'm using it as follows: B.CreateCall2( Intrinsic::getDeclaration(M, Intrinsic::setreturnaddress), ConstantInt::get(Type::getInt32Ty(RI->getContext()), 0), B.CreateIntToPtr(ConstantInt::get(IntPtrTy, 0 /* testing */)), RA->getReturnType())); The problem I'm facing is that for some reason, my following line inside X86TargetLowering::LowerOperation is never getting called: case ISD::SETRETURNADDR: return LowerSETRETURNADDR(Op, DAG); This is despite the fac...

...Intrinsic::eh_dwarf_cfa), - ConstantInt::get(Type::Int32Ty, cfa_offset)); - + Result = + Builder.CreateCall(Intrinsic::getDeclaration(TheModule, + Intrinsic::eh_dwarf_cfa), + Builder.CreateIntToPtr(ConstantInt::get(Type::Int32Ty, + cfa_offset), + ConvertType(TREE_TYPE(exp)))); return true; } The reason for it: when going to calculate the CFA in LLVM, the original code was adding an o...

...mread instruction is the following for both cases(simplified version): int constVal = param1; llvm::IRBuilder<>& irb; llvm::Value* op1 = llvm::ConstantInt::getSigned(irb.getInt32Ty(), constVal); auto* pt = llvm::PointerType::get(op1->getType(), 0); auto* addr = irb.CreateIntToPtr(op1, pt); auto* loaded = irb.CreateLoad(addr); irb.CreateStore(loaded, module->getNamedGlobal(regname)); I cannot get LLVM to leave an llvm::Value as ConstantInt in every case, if I pass it to IRBuilder for processing(for example through a globalvariable storing instruction). Do you kno...

...t; + return CreateCast(Instruction::FPExt, V, DestTy, Name); > + } > + Value *CreatePtrToInt(Value *V, const Type *DestTy, > + const char *Name = "") { > + return CreateCast(Instruction::PtrToInt, V, DestTy, Name); > + } > + Value *CreateIntToPtr(Value *V, const Type *DestTy, > + const char *Name = "") { > + return CreateCast(Instruction::IntToPtr, V, DestTy, Name); > + } > + Value *CreateBitCast(Value *V, const Type *DestTy, > + const char *Name = &quot...