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4 * This file is part of libFirm.
6 * This file may be distributed and/or modified under the terms of the
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9 * packaging of this file.
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12 * this file in accordance with the libFirm Commercial License.
13 * Agreement provided with the Software.
15 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
16 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * @brief More experiments on coalescing with Java implementation.
23 * @author Sebastian Hack
34 #include "lc_opts_enum.h"
44 #include "bitfiddle.h"
46 #include "raw_bitset.h"
48 #include "irgraph_t.h"
56 #include "becopyopt.h"
57 #include "becopyopt_t.h"
58 #include "bechordal_t.h"
59 #include "bejavacoal.h"
66 #define DUMP_ALL 2 * DUMP_AFTER - 1
68 static unsigned dump_flags = 0;
69 static int dbg_level = 0;
71 static const lc_opt_enum_mask_items_t dump_items[] = {
72 { "before", DUMP_BEFORE },
73 { "after", DUMP_AFTER },
78 static lc_opt_enum_mask_var_t dump_var = {
79 &dump_flags, dump_items
82 static const lc_opt_table_entry_t options[] = {
83 LC_OPT_ENT_ENUM_MASK("dump", "dump ifg cloud", &dump_var),
84 LC_OPT_ENT_INT ("dbg", "debug level for the Java coalescer", &dbg_level),
88 void be_init_copyheur3(void)
90 lc_opt_entry_t *be_grp = lc_opt_get_grp(firm_opt_get_root(), "be");
91 lc_opt_entry_t *ra_grp = lc_opt_get_grp(be_grp, "ra");
92 lc_opt_entry_t *chordal_grp = lc_opt_get_grp(ra_grp, "chordal");
93 lc_opt_entry_t *co3_grp = lc_opt_get_grp(chordal_grp, "co3");
95 lc_opt_add_table(co3_grp, options);
98 BE_REGISTER_MODULE_CONSTRUCTOR(be_init_copyheur3);
100 static void set_admissible_regs(be_java_coal_t *coal, copy_opt_t *co, ir_node *irn, int t_idx, int *col_map)
102 const arch_register_req_t *req;
104 req = arch_get_register_req(co->aenv, irn, BE_OUT_POS(0));
106 // ir_printf("%+F\n", irn);
107 if(arch_register_req_is(req, limited)) {
109 unsigned n_regs = co->cls->n_regs;
111 for(i = 0; i < n_regs; ++i) {
112 if(!rbitset_is_set(req->limited, i) && col_map[i] >= 0) {
113 be_java_coal_forbid_color(coal, t_idx, col_map[i]);
119 int co_solve_heuristic_java(copy_opt_t *co)
121 be_ifg_t *ifg = co->cenv->ifg;
122 void *nodes_it = be_ifg_nodes_iter_alloca(ifg);
123 void *neigh_it = be_ifg_neighbours_iter_alloca(ifg);
124 bitset_t *nodes = bitset_malloc(get_irg_last_idx(co->irg));
125 unsigned n_regs = co->cenv->cls->n_regs;
128 unsigned i, j, curr_idx;
135 be_java_coal_t *coal;
138 col_map = alloca(n_regs * sizeof(col_map[0]));
139 inv_col_map = alloca(n_regs * sizeof(inv_col_map[0]));
141 memset(inv_col_map, -1, sizeof(inv_col_map[0]) * n_regs);
143 for(i = 0, j = 0; i < n_regs; ++i) {
144 const arch_register_t *reg = &co->cls->regs[i];
146 if(!arch_register_type_is(reg, ignore)) {
153 node_map = XMALLOC(int, get_irg_last_idx(co->irg) + 1);
154 inv_node_map = XMALLOC(int, get_irg_last_idx(co->irg) + 1);
157 be_ifg_foreach_node(ifg, nodes_it, n) {
158 if(!arch_irn_is(co->aenv, n, ignore)) {
159 int idx = get_irn_idx(n);
160 bitset_set(nodes, idx);
161 node_map[idx] = curr_idx;
162 inv_node_map[curr_idx] = idx;
174 coal = be_java_coal_init("test", curr_idx, j, dbg_level);
176 /* Check, if all neighbours are indeed connected to the node. */
177 be_ifg_foreach_node(ifg, nodes_it, n) {
178 int n_idx = get_irn_idx(n);
179 int t_idx = node_map[n_idx];
181 if(bitset_is_set(nodes, n_idx)) {
182 affinity_node_t *an = get_affinity_info(co, n);
184 ir_snprintf(dbg, sizeof(dbg), "%+F", n);
185 be_java_coal_set_debug(coal, t_idx, dbg);
186 be_java_coal_set_color(coal, t_idx, col_map[arch_get_irn_register(co->aenv, n)->index]);
187 set_admissible_regs(coal, co, n, t_idx, col_map);
188 be_ifg_foreach_neighbour(ifg, neigh_it, n, m) {
189 int m_idx = get_irn_idx(m);
190 int s_idx = node_map[m_idx];
192 if(n_idx < m_idx && bitset_is_set(nodes, m_idx)) {
193 be_java_coal_add_int_edge(coal, s_idx, t_idx);
199 co_gs_foreach_neighb(an, neigh) {
200 int m_idx = get_irn_idx(neigh->irn);
201 int s_idx = node_map[m_idx];
203 if(n_idx < m_idx && bitset_is_set(nodes, m_idx)) {
204 be_java_coal_add_aff_edge(coal, s_idx, t_idx, neigh->costs);
211 if(dump_flags & DUMP_BEFORE) {
213 ir_snprintf(fn, sizeof(fn), "%F-%s-before.dot", co->cenv->irg, co->cenv->cls->name);
214 be_java_coal_dump(coal, fn);
217 be_java_coal_coalesce(coal);
219 be_ifg_foreach_node(ifg, nodes_it, n) {
220 unsigned idx = get_irn_idx(n);
221 if(bitset_is_set(nodes, idx)) {
222 unsigned t_idx = node_map[idx];
223 unsigned col = inv_col_map[be_java_coal_get_color(coal, t_idx)];
224 const arch_register_t *reg;
226 assert(col < n_regs);
227 reg = &co->cls->regs[col];
228 arch_set_irn_register(co->aenv, n, reg);
232 if(dump_flags & DUMP_AFTER) {
234 ir_snprintf(fn, sizeof(fn), "%F-%s-after.dot", co->cenv->irg, co->cenv->cls->name);
235 be_java_coal_dump(coal, fn);
238 be_java_coal_destroy(coal);