[LLVMdev] set of integers to metadata

[Alexandru Ionut Diaconescu]

I also tried the following, with no compilation errors, but segfault, core
dumped:

 *LLVMContext& C = is->getContext();
 Value* values[size];

  for(int gy=0;gy<size;gy++){
          values[gy]=ConstantInt::getSigned(Type::getInt64Ty(C),array[gy]);
  }

 llvm::ArrayRef<Value*> bla = values[size];

  is->setMetadata("path",MDNode::get(C,bla));*




On Fri, May 3, 2013 at 1:18 PM, Alexandru Ionut Diaconescu <
alexandruionutdiaconescu at gmail.com> wrote:

> Hello everyone,
>
> I want to pass a set of integers using metadata but I don't know how. I
> have tried:
>
> the integers are in array[]
>
> *1. *
> LLVMContext& C = is->getContext();
> Value* values[size];
> for(int gy=0;gy<size;gy++){
>       values[gy]=ConstantInt::getSigned(Type::getInt64Ty(C),array[gy]);
> }
> *is->setMetadata("path",MDNode::get(C,values));*
>
> failes when setMetadata(), since
>
> *Hello.cpp:706:56: error: no matching function for call to
> ‘llvm::MDNode::get(llvm::LLVMContext&, llvm::Value* [(((unsigned
> int)(((int)cebagcnt) + -0x00000000000000001)) + 1)])’
> Hello.cpp:706:56: note: candidate is:
> /home/alex/llvm/include/llvm/Metadata.h:120:18: note: static llvm::MDNode*
> llvm::MDNode::get(llvm::LLVMContext&, llvm::ArrayRef<llvm::Value*>)
> /home/alex/llvm/include/llvm/Metadata.h:120:18: note:   no known
> conversion for argument 2 from ‘llvm::Value* [(((unsigned
> int)(((int)cebagcnt) + -0x00000000000000001)) + 1)]’ to
> ‘llvm::ArrayRef<llvm::Value*>’*
>
> *2.*
> It works manually when I have
>
> Value* values[]{
>               ConstantInt::getSigned(Type::getInt64Ty(C),*2*),
>               ConstantInt::getSigned(Type::getInt64Ty(C),*3*)
>             };
> but I want to add metadata using the array[] elements with integers.
>
> *3.* also, not so appropriate, I tried to convert the concatenated array
> elements into a StringRef tsts = llvm::Twine(srsr).str();, but I have
> segfault errors. In addition, this method is not exactly what I need.
>
> How should I add all the array elements to metadata one by one, like I am
> trying to do using values[] ?
>
> Thank you much !
>



-- 
Best regards,
Alexandru Ionut Diaconescu
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