ir_node *be_transform_phi(ir_node *node, const arch_register_req_t *req)
{
ir_node *block = be_transform_nodes_block(node);
ir_graph *irg = get_irn_irg(block);
dbg_info *dbgi = get_irn_dbg_info(node);
/* phi nodes allow loops, so we use the old arguments for now
* and fix this later */
ir_node **ins = get_irn_in(node)+1;
int arity = get_irn_arity(node);
ir_mode *mode = req->cls != NULL ? req->cls->mode : get_irn_mode(node);
ir_node *phi = new_ir_node(dbgi, irg, block, op_Phi, mode, arity, ins);
copy_node_attr(irg, node, phi);
backend_info_t *info = be_get_info(phi);
info->in_reqs = be_allocate_in_reqs(irg, arity);
for (int i = 0; i < arity; ++i) {
info->in_reqs[i] = req;
}
arch_set_irn_register_req_out(phi, 0, req);
be_enqueue_preds(node);
return phi;
}
/**
* Transform helper for blocks.
*/
static ir_node *transform_block(ir_node *node)
{
ir_node *const block = exact_copy(node);
block->node_nr = node->node_nr;
/* put the preds in the worklist */
be_enqueue_preds(node);
return block;
}
static ir_node *transform_end(ir_node *node)
{
/* Do not transform predecessors yet to keep the pre-transform
* phase from visiting all the graph. */
ir_node *const block = be_transform_nodes_block(node);
ir_node *const new_end = exact_copy(node);
set_nodes_block(new_end, block);
ir_graph *const irg = get_irn_irg(new_end);
set_irg_end(irg, new_end);
be_enqueue_preds(node);
return new_end;
}
/**
* Transform helper for blocks.
*/
static ir_node *transform_block(ir_node *node)
{
ir_graph *irg = get_irn_irg(node);
dbg_info *dbgi = get_irn_dbg_info(node);
ir_mode *mode = get_irn_mode(node);
ir_node *block = new_ir_node(dbgi, irg, NULL, get_irn_op(node), mode,
get_irn_arity(node), get_irn_in(node) + 1);
copy_node_attr(irg, node, block);
block->node_nr = node->node_nr;
/* transfer execfreq value */
double execfreq = get_block_execfreq(node);
set_block_execfreq(block, execfreq);
/* put the preds in the worklist */
be_enqueue_preds(node);
return block;
}
static ir_node *transform_end(ir_node *node)
{
/* end has to be duplicated manually because we need a dynamic in array */
ir_graph *irg = get_irn_irg(node);
dbg_info *dbgi = get_irn_dbg_info(node);
ir_node *block = be_transform_node(get_nodes_block(node));
ir_node *new_end = new_ir_node(dbgi, irg, block, op_End, mode_X, -1, NULL);
copy_node_attr(irg, node, new_end);
be_duplicate_deps(node, new_end);
set_irg_end(irg, new_end);
/* do not transform predecessors yet to keep the pre-transform
* phase from visiting all the graph */
int arity = get_irn_arity(node);
for (int i = 0; i < arity; ++i) {
ir_node *in = get_irn_n(node, i);
add_End_keepalive(new_end, in);
}
be_enqueue_preds(node);
return new_end;
}
