#include "set.h"
#include "pmap.h"
#include "util.h"
+#include "debug.h"
#include "irop_t.h"
#include "irmode_t.h"
#include "beirgmod.h"
+#define DBG_LEVEL 0
+
typedef enum _node_kind_t {
node_kind_spill,
node_kind_reload,
}
ir_node *new_Reload(const be_node_factory_t *factory,
- const arch_register_class_t *cls,
- ir_graph *irg, ir_node *bl, ir_node *spill_node)
+ const arch_register_class_t *cls, ir_graph *irg,
+ ir_node *bl, ir_mode *mode, ir_node *spill_node)
{
- ir_mode *mode;
ir_node *in[1];
ir_op *op = get_op(factory, cls, node_kind_reload)->op;
assert(op && "Reload opcode must be present for this register class");
- assert(is_Spill(factory, spill_node) && "Operand of Reload must be a Spill");
+ // assert(is_Spill(factory, spill_node) && "Operand of Reload must be a Spill");
in[0] = spill_node;
- mode = get_irn_mode(get_irn_n(spill_node, 0));
return new_ir_node(NULL, irg, bl, op, mode, 1, in);
}
ir_graph *irg, ir_node *bl, ir_node *in)
{
ir_node *ins[1];
- ir_op *op = get_op(factory, cls, node_kind_perm)->op;
+ ir_op *op = get_op(factory, cls, node_kind_copy)->op;
ins[0] = in;
return new_ir_node(NULL, irg, bl, op, get_irn_mode(in), 1, ins);
}
+ir_node *be_spill(
+ const be_node_factory_t *factory,
+ const arch_env_t *arch_env,
+ ir_node *irn)
+{
+ const arch_register_class_t *cls
+ = arch_get_irn_reg_class(arch_env, irn, arch_pos_make_out(0));
+ ir_node *bl = get_nodes_block(irn);
+ ir_graph *irg = get_irn_irg(bl);
+ ir_node *spill = new_Spill(factory, cls, irg, bl, irn);
+
+ ir_node *insert;
+
+ /*
+ * search the right insertion point. a spill of a phi cannot be put
+ * directly after the phi, if there are some phis behind the one which
+ * is spilled.
+ */
+ insert = sched_next(irn);
+ while(is_Phi(insert) && !sched_is_end(insert))
+ insert = sched_next(insert);
+
+ sched_add_before(insert, spill);
+ return spill;
+}
+
+ir_node *be_reload(
+ const be_node_factory_t *factory,
+ const arch_env_t *arch_env,
+ const arch_register_class_t *cls,
+ ir_node *irn, int pos, ir_mode *mode, ir_node *spill)
+{
+ ir_node *reload;
+
+ ir_node *bl = get_nodes_block(irn);
+ ir_graph *irg = get_irn_irg(bl);
+
+ assert(is_Spill(factory, spill)
+ || (is_Phi(spill) && get_irn_mode(spill) == mode_M));
+
+ reload = new_Reload(factory, cls, irg, bl, mode, spill);
+
+ set_irn_n(irn, pos, reload);
+ sched_add_before(irn, reload);
+ return reload;
+}
+
/**
* If the node is a proj, reset the node to the proj's target and return
* the proj number.
arch_register_req_t *req, const ir_node *irn, int pos)
{
be_op_t *bo;
+ int index = arch_pos_get_index(pos);
const be_node_factory_t *factory =
container_of(_self, const be_node_factory_t, irn_ops);
- pos = arch_pos_make_out(redir_proj(&irn, arch_pos_get_index(pos)));
+ if(arch_pos_is_out(pos))
+ pos = arch_pos_make_out(redir_proj(&irn, index));
bo = pmap_get(factory->irn_op_map, get_irn_op(irn));
int i;
req->type = arch_register_req_type_normal;
- req->cls = bo->cls;
+ req->cls = bo->cls;
- for(i = 0; i < bo->n_pos; ++pos)
+ for(i = 0; i < bo->n_pos; ++i)
if(pos == bo->pos[i])
return req;
}
idx = redir_proj(&irn, 0);
bo = pmap_get(factory->irn_op_map, get_irn_op(irn));
+ switch(bo->kind) {
+#define XXX(a) case node_kind_ ## a: return arch_irn_class_ ## a;
+ XXX(spill)
+ XXX(reload)
+ XXX(perm)
+ XXX(copy)
+#undef XXX
+ }
+
return 0;
}
+arch_irn_class_t be_node_get_flags(const arch_irn_ops_t *_self, const ir_node *irn)
+{
+ return 0;
+}
+
static const arch_irn_ops_t *
be_node_get_irn_ops(const arch_irn_handler_t *_self, const ir_node *irn)
{
{
be_op_t *bo;
bo = pmap_get(f->irn_op_map, get_irn_op(irn));
- return bo->kind == node_kind_spill;
+ return bo != NULL && bo->kind == node_kind_spill;
}
be_node_factory_t *be_node_factory_init(be_node_factory_t *factory,
factory->irn_ops.set_irn_reg = be_node_set_irn_reg;
factory->irn_ops.get_irn_reg = be_node_get_irn_reg;
factory->irn_ops.classify = be_node_classify;
+ factory->irn_ops.get_flags = be_node_get_flags;
for(i = 0, n = isa->get_n_reg_class(); i < n; ++i) {
const arch_register_class_t *cls = isa->get_reg_class(i);
ent = get_op(factory, cls, node_kind_spill);
snprintf(buf, sizeof(buf), "Spill_%s", cls->name);
ent->op = new_ir_op(get_next_ir_opcode(), buf, op_pin_state_pinned,
- 0, 0, oparity_unary, 0);
+ 0, oparity_unary, 0, 0);
ent->n_pos = ARRSIZE(templ_pos_Spill);
ent->pos = templ_pos_Spill;
pmap_insert(factory->irn_op_map, ent->op, ent);
ent = get_op(factory, cls, node_kind_reload);
snprintf(buf, sizeof(buf), "Reload_%s", cls->name);
- ent->op = new_ir_op(get_next_ir_opcode(), buf, op_pin_state_pinned, 0, 0,
- oparity_unary, sizeof(const arch_register_t *));
+ ent->op = new_ir_op(get_next_ir_opcode(), buf, op_pin_state_pinned, 0,
+ oparity_unary, 0, sizeof(const arch_register_t *));
ent->n_pos = ARRSIZE(templ_pos_Reload);
ent->pos = templ_pos_Reload;
pmap_insert(factory->irn_op_map, ent->op, ent);
ent = get_op(factory, cls, node_kind_copy);
snprintf(buf, sizeof(buf), "Copy_%s", cls->name);
- ent->op = new_ir_op(get_next_ir_opcode(), buf, op_pin_state_pinned, 0, 0,
- oparity_unary, sizeof(const arch_register_t *));
+ ent->op = new_ir_op(get_next_ir_opcode(), buf, op_pin_state_pinned, 0,
+ oparity_unary, 0, sizeof(const arch_register_t *));
ent->n_pos = ARRSIZE(templ_pos_Copy);
ent->pos = templ_pos_Copy;
pmap_insert(factory->irn_op_map, ent->op, ent);
ent = get_op(factory, cls, node_kind_perm);
snprintf(buf, sizeof(buf), "Perm_%s", cls->name);
- ent->op = new_ir_op(get_next_ir_opcode(), buf, op_pin_state_pinned, 0, 0,
- oparity_variable, sizeof(const arch_register_t) * cls->n_regs);
+ ent->op = new_ir_op(get_next_ir_opcode(), buf, op_pin_state_pinned, 0,
+ oparity_variable, 0, sizeof(const arch_register_t) * cls->n_regs);
ent->n_pos = 2 * cls->n_regs;
ent->pos = obstack_alloc(&factory->obst, sizeof(ent->pos[0]) * ent->n_pos);
for(j = 0; j < ent->n_pos; j += 2) {
const arch_env_t *arch_env = env->main_env->arch_env;
ir_node *bl = is_Block(pos) ? pos : get_nodes_block(pos);
ir_graph *irg = get_irn_irg(bl);
- pset *live_end = get_live_end(bl);
- pset *live = pset_new_ptr_default();
+ pset *live = put_live_end(bl, pset_new_ptr_default());
ir_node *curr, *irn, *perm, **nodes;
+ firm_dbg_module_t *dbg = firm_dbg_register("firm.be.node");
int i, n;
- /* put all live ends in the live set. */
- for(irn = pset_first(live_end); irn; irn = pset_next(live_end))
- pset_insert_ptr(live, irn);
+ firm_dbg_set_mask(dbg, DBG_LEVEL);
+ DBG((dbg, LEVEL_1, "Insert Perm after: %+F\n", pos));
sched_foreach_reverse(bl, irn) {
+ ir_node *x;
+
+ /*
+ * If we encounter the node we want to insert the Perm after,
+ * exit immediately, so that this node is still live
+ */
+ if(irn == pos)
+ break;
+
+ DBG((dbg, LEVEL_1, "%+F\n", irn));
+ for(x = pset_first(live); x; x = pset_next(live))
+ DBG((dbg, LEVEL_1, "\tlive: %+F\n", x));
if(arch_irn_has_reg_class(arch_env, irn, arch_pos_make_out(0), cls))
pset_remove_ptr(live, irn);
if(arch_irn_has_reg_class(arch_env, op, arch_pos_make_out(0), cls))
pset_insert_ptr(live, op);
}
-
- if(sched_prev(irn) == pos)
- break;
}
n = pset_count(live);
nodes = malloc(n * sizeof(nodes[0]));
- for(irn = pset_first(live), i = 0; irn; irn = pset_next(live), i++)
+ DBG((dbg, LEVEL_1, "live:\n"));
+ for(irn = pset_first(live), i = 0; irn; irn = pset_next(live), i++) {
+ DBG((dbg, LEVEL_1, "\t%+F\n", irn));
nodes[i] = irn;
+ }
- curr = perm = new_Perm(env->main_env->node_factory, cls, irg, bl, n, nodes);
+ perm = new_Perm(env->main_env->node_factory, cls, irg, bl, n, nodes);
sched_add_after(pos, perm);
free(nodes);
+ curr = perm;
for(i = 0; i < n; ++i) {
ir_node *copies[1];
ir_node *perm_op = get_irn_n(perm, i);
+ const arch_register_t *reg = arch_get_irn_register(arch_env, perm_op, 0);
ir_mode *mode = get_irn_mode(perm_op);
ir_node *proj = new_r_Proj(irg, bl, perm, mode, i);
+ arch_set_irn_register(arch_env, proj, 0, reg);
+
sched_add_after(curr, proj);
curr = proj;
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