build_barray_alloc

hugr_llvm::extension::collections::borrow_array

Function build_barray_alloc 

Source 
pub fn build_barray_alloc<'c, H: HugrView<Node = Node>>(
    ctx: &mut EmitFuncContext<'c, '_, H>,
    ccg: &impl BorrowArrayCodegen,
    elem_ty: BasicTypeEnum<'c>,
    size: u64,
    set_borrowed: bool,
) -> Result<(PointerValue<'c>, StructValue<'c>)>
Expand description

Helper function to allocate a fat borrow array pointer.

Returns a pointer and a struct:

  • The pointer points to the first element of the array (i.e. it is of type elem_ty.ptr_type()).
  • The struct is the fat pointer that stores also the pointer to the mask and an additional offset (initialised to 0).