Nodecl::NodeclVisitor<void>::Ret AVX2StrideVisitorConv::unhandled_node(const Nodecl::NodeclBase& node)
{
//printf("Unsupported %d: %s\n", _vector_num_elements, node.prettyprint().c_str());
if (node.get_type().is_vector())
{
Nodecl::NodeclBase new_node = node.shallow_copy().as<Nodecl::NodeclBase>();
new_node.set_type(TL::Type::get_int_type().get_vector_of_elements(
_vector_num_elements));
// TODO better
node.replace(new_node);
Nodecl::NodeclBase::Children children = node.children();
for(Nodecl::NodeclBase::Children::iterator it = children.begin();
it != children.end();
it ++)
{
walk(*it);
}
}
return Ret();
}
void DeviceFPGA::add_hls_pragmas(
Nodecl::NodeclBase &task,
TL::ObjectList<OutlineDataItem*> &data_items
)
{
/*
* Insert hls pragmas in order to denerate input/output connections
* Every parameter needs a directive:
* scalar: create plain wire connections:
* #pragma HLS INTERFACE ap_none port=VAR
* #pragma AP resource core=AXI_SLAVE variable=VAR metadata="-bus_bundle AXIlite"
*
* Array; create fifo port to be handled by axi stream
* #pragma HLS stream variable=VAR <-- NOT NEEDED
* #pragma HLS resource core=AXI4Stream variable=VAR
* #pragma HLS interface ap_fifo port=VAR
*
* For every task there is a control bus defined to kick the accelerator off:
*
* #pragma AP resource core=AXI_SLAVE variable=return metadata="-bus_bundle AXIlite" \
* port_map={{ap_start START} {ap_done DONE} {ap_idle IDLE} {ap_return RETURN}}
*
* All of this stuff must be inside the function body i.e.
*
* void foo(...)
* {
* pragma stuff
* function body
* }
*
*/
//see what kind of ast it really is
std::cerr << ast_node_type_name(task.get_kind())
<< " in_list: " << task.is_in_list()
<< " locus: " << task.get_locus()
<< std::endl;
//Dig into the tree and find where the function statements are
ObjectList<Nodecl::NodeclBase> tchildren = task.children();
Nodecl::NodeclBase& context = tchildren.front();
ObjectList<Nodecl::NodeclBase> cchildren = context.children();
Nodecl::List list(cchildren.front().get_internal_nodecl());
Nodecl::List stlist(list.begin()->children().front().get_internal_nodecl());
Nodecl::UnknownPragma ctrl_bus = Nodecl::UnknownPragma::make(
"AP resource core=AXI_SLAVE variable=return metadata=\"-bus_bundle AXIlite\" port_map={{ap_start START} {ap_done DONE} {ap_idle IDLE} {ap_return RETURN}}");
stlist.prepend(ctrl_bus);
//since we are using prepend, everything is going to appar in reverse order
//but this may not be a real issue
// TL::ObjectList<OutlineDataItem*> data_items = outline_info.get_data_items();
for (TL::ObjectList<OutlineDataItem*>::iterator it = data_items.begin();
it != data_items.end();
it++)
{
std::string field_name = (*it)->get_field_name();
Nodecl::UnknownPragma pragma_node;
if ((*it)->get_copies().empty())
{
//set scalar argumenit pragmas
pragma_node = Nodecl::UnknownPragma::make("HLS INTERFACE ap_none port=" + field_name);
stlist.prepend(pragma_node);
pragma_node = Nodecl::UnknownPragma::make("AP resource core=AXI_SLAVE variable="
+ field_name
+ " metadata=\"-bus_bundle AXIlite\"");
stlist.prepend(pragma_node);
}
else
{
//set array/stream pragmas
pragma_node = Nodecl::UnknownPragma::make(
"HLS resource core=AXI4Stream variable=" + field_name);
stlist.prepend(pragma_node);
pragma_node = Nodecl::UnknownPragma::make(
"HLS interface ap_fifo port=" + field_name);
stlist.prepend(pragma_node);
}
}
}