#define DBG_MODULE firm_dbg_register("firm.be.irgmod")
#define DBG_LEVEL SET_LEVEL_0
+/*
+ ____ _
+ | _ \ ___ _ __ ___ (_)_ __ __ _ _ __ ___ ___
+ | | | |/ _ \| '_ ` _ \| | '_ \ / _` | '_ \ / __/ _ \
+ | |_| | (_) | | | | | | | | | | (_| | | | | (_| __/
+ |____/ \___/|_| |_| |_|_|_| |_|\__,_|_| |_|\___\___|
+ | ___| __ ___ _ __ | |_(_) ___ _ __ ___
+ | |_ | '__/ _ \| '_ \| __| |/ _ \ '__/ __|
+ | _|| | | (_) | | | | |_| | __/ | \__ \
+ |_| |_| \___/|_| |_|\__|_|\___|_| |___/
+
+*/
+
+
struct _dom_front_info_t {
pmap *df_map;
};
del_pdeq(worklist);
}
+/*
+ ____ ____ _
+ / ___/ ___| / \
+ \___ \___ \ / _ \
+ ___) |__) / ___ \
+ |____/____/_/ \_\
+ ____ _ _ _
+ / ___|___ _ __ ___| |_ _ __ _ _ ___| |_(_) ___ _ __
+ | | / _ \| '_ \/ __| __| '__| | | |/ __| __| |/ _ \| '_ \
+ | |__| (_) | | | \__ \ |_| | | |_| | (__| |_| | (_) | | | |
+ \____\___/|_| |_|___/\__|_| \__,_|\___|\__|_|\___/|_| |_|
+
+*/
+
/**
* Find the copy of the given original node whose value is 'active'
* at a usage.
* traversing from the predecessor block which corresponds to the phi
* usage.
*
- * @param usage The node which uses the original node.
- * @param pos The number of the argument which corresponds to the
- * original node.
- * @param copy_blocks A set containing all basic block in which copies
- * of the original node are located.
- * @param copies A set containing all node which are copies from the
- * original node.
- * @return The valid copy for usage.
+ * @param usage The node which uses the original node.
+ * @param pos The position of the argument which corresponds to the original node.
+ * @param copies A set containing all node which are copies from the original node.
+ * @param copy_blocks A set containing all basic block in which copies of the original node are located.
+ * @param phis A set where all created phis are recorded.
+ * @param phi_blocks A set of all blocks where Phis shall be inserted (iterated dominance frontier).
+ * @param mode The mode for the Phi if one has to be created.
+ * @return The valid copy for usage.
*/
-static ir_node *search_def(ir_node *usage, int pos, pset *copies, pset *copy_blocks, pset *phi_blocks, ir_mode *mode)
+static ir_node *search_def(ir_node *usage, int pos, pset *copies, pset *copy_blocks, pset *phis, pset *phi_blocks, ir_mode *mode)
{
ir_node *curr_bl;
ir_node *start_irn;
if(!phi) {
int i, n_preds = get_irn_arity(curr_bl);
ir_graph *irg = get_irn_irg(curr_bl);
- ir_node **ins = malloc(n_preds * sizeof(ins[0]));
+ ir_node **ins = xmalloc(n_preds * sizeof(ins[0]));
for(i = 0; i < n_preds; ++i)
ins[i] = new_r_Unknown(irg, mode);
free(ins);
for(i = 0; i < n_preds; ++i) {
- ir_node *arg = search_def(phi, i, copies, copy_blocks, phi_blocks, mode);
+ ir_node *arg = search_def(phi, i, copies, copy_blocks, phis, phi_blocks, mode);
DBG((dbg, LEVEL_2, "\t\t%+F(%d) -> %+F\n", phi, i, arg));
set_irn_n(phi, i, arg);
}
+
+ if(phis)
+ pset_insert_ptr(phis, phi);
}
return phi;
return NULL;
}
-static void fix_usages(pset *copies, pset *copy_blocks, pset *phi_blocks, pset *ignore_uses)
+static void fix_usages(pset *copies, pset *copy_blocks, pset *phi_blocks, pset *phis, pset *ignore_uses)
{
firm_dbg_module_t *dbg = DBG_MODULE;
int n_outs = 0;
for(i = 0; i < n_outs; ++i) {
ir_node *irn = outs[i].irn;
int pos = outs[i].pos;
- ir_mode *mode = get_irn_mode(irn);
+ ir_mode *mode = get_irn_mode(get_irn_n(irn, pos));
ir_node *def;
- def = search_def(irn, pos, copies, copy_blocks, phi_blocks, mode);
+ def = search_def(irn, pos, copies, copy_blocks, phis, phi_blocks, mode);
DBG((dbg, LEVEL_2, "\t%+F(%d) -> %+F\n", irn, pos, def));
if(def != NULL)
}
}
-void be_ssa_constr_ignore(dom_front_info_t *info, int n, ir_node *nodes[], pset *ignore_uses)
+void be_ssa_constr_phis_ignore(dom_front_info_t *info, int n, ir_node *nodes[], pset *phis, pset *ignore_uses)
{
pset *irns = pset_new_ptr(n);
int i;
for(i = 0; i < n; ++i)
pset_insert_ptr(irns, nodes[i]);
- be_ssa_constr_set_ignore(info, irns, ignore_uses);
+ be_ssa_constr_set_phis_ignore(info, irns, phis, ignore_uses);
del_pset(irns);
}
+void be_ssa_constr_ignore(dom_front_info_t *info, int n, ir_node *nodes[], pset *ignore_uses)
+{
+ be_ssa_constr_phis_ignore(info, n, nodes, NULL, ignore_uses);
+}
+
void be_ssa_constr(dom_front_info_t *info, int n, ir_node *nodes[])
{
pset *empty_set = be_empty_set();
be_ssa_constr_ignore(info, n, nodes, empty_set);
}
-void be_ssa_constr_set_ignore(dom_front_info_t *df, pset *nodes, pset *ignore_uses)
+void be_ssa_constr_set_phis_ignore(dom_front_info_t *df, pset *nodes, pset *phis, pset *ignore_uses)
{
int n = pset_count(nodes);
pset *blocks = pset_new_ptr(n);
* Place the phi functions and reroute the usages.
*/
determine_phi_blocks(nodes, blocks, phi_blocks, df);
- fix_usages(nodes, blocks, phi_blocks, ignore_uses);
+ fix_usages(nodes, blocks, phi_blocks, phis, ignore_uses);
/* reset the optimizations */
set_optimize(save_optimize);
}
-void be_ssa_constr_set(dom_front_info_t *info, pset *nodes)
+void be_ssa_constr_set_phis(dom_front_info_t *df, pset *nodes, pset *phis)
{
pset *empty_set = be_empty_set();
+ assert(pset_count(empty_set) == 0);
+
+ be_ssa_constr_set_phis_ignore(df, nodes,phis, empty_set);
+}
+void be_ssa_constr_set_ignore(dom_front_info_t *df, pset *nodes, pset *ignore_uses)
+{
+ be_ssa_constr_set_phis_ignore(df, nodes, NULL, ignore_uses);
+}
+
+void be_ssa_constr_set(dom_front_info_t *info, pset *nodes)
+{
+ pset *empty_set = be_empty_set();
assert(pset_count(empty_set) == 0);
be_ssa_constr_set_ignore(info, nodes, empty_set);
}
+
+/*
+ ___ _ ____
+ |_ _|_ __ ___ ___ _ __| |_ | _ \ ___ _ __ _ __ ___
+ | || '_ \/ __|/ _ \ '__| __| | |_) / _ \ '__| '_ ` _ \
+ | || | | \__ \ __/ | | |_ | __/ __/ | | | | | | |
+ |___|_| |_|___/\___|_| \__| |_| \___|_| |_| |_| |_|
+
+*/
+
+ir_node *insert_Perm_after(const arch_env_t *arch_env,
+ const arch_register_class_t *cls,
+ dom_front_info_t *dom_front,
+ ir_node *pos)
+{
+ ir_node *bl = is_Block(pos) ? pos : get_nodes_block(pos);
+ ir_graph *irg = get_irn_irg(bl);
+ pset *live = pset_new_ptr_default();
+ firm_dbg_module_t *dbg = firm_dbg_register("be.node");
+
+ ir_node *curr, *irn, *perm, **nodes;
+ int i, n;
+
+ DBG((dbg, LEVEL_1, "Insert Perm after: %+F\n", pos));
+
+ if(!be_liveness_nodes_live_at(arch_env, cls, pos, live));
+
+ n = pset_count(live);
+
+ if(n == 0)
+ return NULL;
+
+ nodes = malloc(n * sizeof(nodes[0]));
+
+ 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;
+ }
+
+ perm = be_new_Perm(cls, irg, bl, n, nodes);
+ sched_add_after(pos, perm);
+ free(nodes);
+
+ curr = perm;
+ for(i = 0; i < n; ++i) {
+ ir_node *copies[2];
+ ir_node *perm_op = get_irn_n(perm, i);
+ const arch_register_t *reg = arch_get_irn_register(arch_env, perm_op);
+
+ 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, reg);
+
+ sched_add_after(curr, proj);
+ curr = proj;
+
+ copies[0] = perm_op;
+ copies[1] = proj;
+ be_ssa_constr(dom_front, 2, copies);
+ }
+ return perm;
+}