3 * @author Sebastian Hack
22 #include "iredges_t.h"
26 #include "bechordal_t.h"
28 #include "besched_t.h"
29 #include "belistsched.h"
32 #include "bechordal.h"
34 #include "becopyoptmain.h"
35 #include "becopystat.h"
36 #include "bessadestr.h"
37 #include "bearch_firm.h"
40 #include "bespillilp.h"
42 #include "beasm_dump_globals.h"
43 #include "beasm_asm_gnu.h"
66 static be_main_env_t *be_init_env(be_main_env_t *env)
68 const arch_isa_if_t *isa = &firm_isa;
70 obstack_init(&env->obst);
71 env->dbg = firm_dbg_register("be.main");
72 firm_dbg_set_mask(env->dbg, SET_LEVEL_1);
74 env->arch_env = obstack_alloc(&env->obst, sizeof(env->arch_env[0]));
75 arch_env_init(env->arch_env, isa);
76 env->arch_env->isa->init();
78 env->node_factory = obstack_alloc(&env->obst, sizeof(*env->node_factory));
79 be_node_factory_init(env->node_factory, isa);
81 arch_env_add_irn_handler(env->arch_env, &firm_irn_handler);
82 arch_env_add_irn_handler(env->arch_env,
83 be_node_get_irn_handler(env->node_factory));
88 static be_main_session_env_t *
89 be_init_session_env(be_main_session_env_t *env,
90 be_main_env_t *main_env, ir_graph *irg)
92 env->main_env = main_env;
98 static void prepare_graph(be_main_session_env_t *s)
100 /* set the current graph (this is important for several firm functions) */
101 current_ir_graph = s->irg;
103 /* Let the isa prepare the graph. */
104 s->main_env->arch_env->isa->prepare_graph(s->irg);
106 /* Normalize proj nodes. */
107 normalize_proj_nodes(irg);
109 /* Remove critical edges */
110 remove_critical_cf_edges(s->irg);
112 /* Compute the dominance information. */
113 free_dom_and_peace(s->irg);
114 compute_doms(s->irg);
116 /* Compute the dominance frontiers */
117 s->dom_front = be_compute_dominance_frontiers(s->irg);
119 /* Ensure, that the ir_edges are computed. */
120 edges_activate(s->irg);
122 /* Compute loop nesting information (for weighting copies) */
123 if (get_irg_loopinfo_state(s->irg) != (loopinfo_valid & loopinfo_cf_consistent))
124 construct_cf_backedges(s->irg);
127 dump_dominator_information(true);
128 dump_ir_block_graph(s->irg, "-prepared");
129 dump_dominator_information(false);
133 static void be_main_loop(void)
137 const arch_isa_if_t *isa;
140 isa = arch_env_get_isa(env.arch_env);
143 for(i = 0, n = get_irp_n_irgs(); i < n; ++i) {
145 ir_graph *irg = get_irp_irg(i);
146 be_main_session_env_t session;
148 dump_ir_block_graph(irg, "-be-begin");
150 DBG((env.dbg, LEVEL_1, "====> IRG: %F\n", irg));
152 /* Init the session. */
153 be_init_session_env(&session, &env, irg);
155 /* Compute some analyses and prepare the graph for backend use. */
156 prepare_graph(&session);
158 /* Schedule the graphs. */
159 list_sched(irg, trivial_selector);
161 dump_ir_block_graph_sched(irg, "-sched");
164 /* Verify the schedule */
165 sched_verify_irg(irg);
167 /* Build liveness information */
170 /* Perform the following for each register class. */
171 for(j = 0, m = isa->get_n_reg_class(); j < m; ++j) {
172 be_chordal_env_t *chordal_env;
173 const arch_register_class_t *cls = isa->get_reg_class(j);
175 DBG((env.dbg, LEVEL_1, "----> Reg class: %s\n", cls->name));
177 be_spill_ilp(&session, cls);
179 dump_ir_block_graph_sched(session.irg, "-spill");
183 be_check_pressure(&session, cls);
189 ir_snprintf(buf, sizeof(buf), "%F_%s-live.txt", irg, cls->name);
190 if((f = fopen(buf, "wt")) != NULL) {
191 be_liveness_dump(session.irg, f);
197 chordal_env = be_ra_chordal(&session, cls);
199 #ifdef DUMP_ALLOCATED
200 dump_allocated_irg(env.arch_env, irg, "");
202 copystat_collect_cls(chordal_env);
204 dump_allocated_irg(env.arch_env, irg, "pre");
205 be_copy_opt(chordal_env);
206 dump_allocated_irg(env.arch_env, irg, "post");
208 be_ssa_destruction(chordal_env);
209 be_ssa_destruction_check(chordal_env);
210 be_ra_chordal_check(chordal_env);
212 be_ra_chordal_done(chordal_env);
213 be_numbering_done(irg);
216 dump_ir_block_graph_sched(session.irg, "-post");
222 void be_main(int argc, const char *argv[])
224 assembler_t *gnu_assembler;
225 FILE *asm_output_file;
231 gnu_assembler = gnuasm_create_assembler();
232 asm_output_file = fopen("asm_output.asm", "w");
234 asm_dump_globals(gnu_assembler);
235 gnuasm_dump(gnu_assembler, asm_output_file);
236 gnuasm_delete_assembler(gnu_assembler);
237 fclose(asm_output_file);