3 * File name: ir/ir/irphase.c
4 * Purpose: Phase information handling using node indexes.
5 * Author: Sebastian Hack
9 * Copyright: (c) 1998-2006 Universitaet Karlsruhe
10 * Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE.
19 #include "irphase_t.h"
21 phase_t *phase_init(phase_t *ph, const char *name, ir_graph *irg, unsigned growth_factor, phase_irn_data_init_t *data_init)
23 assert(growth_factor >= 1.0 && "growth factor must greater or equal to 1.0");
24 assert(data_init && "You must provide a data constructor");
26 obstack_init(&ph->obst);
29 ph->growth_factor = growth_factor;
30 ph->data_init = data_init;
38 void phase_free(phase_t *phase)
40 obstack_free(&phase->obst, NULL);
42 xfree(phase->data_ptr);
45 phase_stat_t *phase_stat(const phase_t *phase, phase_stat_t *stat)
48 memset(stat, 0, sizeof(stat[0]));
50 stat->node_map_bytes = phase->n_data_ptr * sizeof(phase->data_ptr[0]);
51 stat->node_slots = phase->n_data_ptr;
52 for(i = 0, n = phase->n_data_ptr; i < n; ++i) {
53 if(phase->data_ptr[i] != NULL) {
54 stat->node_slots_used++;
57 stat->overall_bytes = stat->node_map_bytes + obstack_memory_used(&((phase_t *)phase)->obst);
61 void phase_reinit_irn_data(phase_t *phase)
65 if (! phase->data_init)
68 for (i = 0, n = phase->n_data_ptr; i < n; ++i) {
69 if (phase->data_ptr[i])
70 phase->data_init(phase, get_idx_irn(phase->irg, i), phase->data_ptr[i]);
74 void phase_reinit_single_irn_data(phase_t *phase, ir_node *irn)
78 if (! phase->data_init)
81 idx = get_irn_idx(irn);
82 if (phase->data_ptr[idx])
83 phase->data_init(phase, irn, phase->data_ptr[idx]);
86 ir_node *phase_get_first_node(phase_t *phase) {
89 for (i = 0; i < phase->n_data_ptr; ++i)
90 if (phase->data_ptr[i])
91 return get_idx_irn(phase->irg, i);
96 ir_node *phase_get_next_node(phase_t *phase, ir_node *start) {
99 for (i = get_irn_idx(start) + 1; i < phase->n_data_ptr; ++i)
100 if (phase->data_ptr[i])
101 return get_idx_irn(phase->irg, i);