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"
41 #include "bespillbelady.h"
43 #include "beasm_dump_globals.h"
44 #include "beasm_asm_gnu.h"
46 #include "firm2arch.h"
50 #define DUMP_TRANSFORM
71 static be_main_env_t *be_init_env(be_main_env_t *env)
73 const arch_isa_if_t *isa = &firm_isa;
75 obstack_init(&env->obst);
76 env->dbg = firm_dbg_register("be.main");
77 firm_dbg_set_mask(env->dbg, SET_LEVEL_1);
79 env->arch_env = obstack_alloc(&env->obst, sizeof(env->arch_env[0]));
80 arch_env_init(env->arch_env, isa);
81 env->arch_env->isa->init();
83 env->node_factory = obstack_alloc(&env->obst, sizeof(*env->node_factory));
84 be_node_factory_init(env->node_factory, isa);
86 arch_env_add_irn_handler(env->arch_env, &firm_irn_handler);
87 arch_env_add_irn_handler(env->arch_env,
88 be_node_get_irn_handler(env->node_factory));
93 static be_main_session_env_t *
94 be_init_session_env(be_main_session_env_t *env,
95 be_main_env_t *main_env, ir_graph *irg)
97 env->main_env = main_env;
103 static void prepare_graph(be_main_session_env_t *s)
105 /* set the current graph (this is important for several firm functions) */
106 current_ir_graph = s->irg;
108 /* Let the isa prepare the graph. */
109 s->main_env->arch_env->isa->prepare_graph(s->irg);
111 /* Normalize proj nodes. */
112 normalize_proj_nodes(s->irg);
114 /* Remove critical edges */
115 remove_critical_cf_edges(s->irg);
117 /* Compute the dominance information. */
118 free_dom_and_peace(s->irg);
119 compute_doms(s->irg);
121 /* Compute the dominance frontiers */
122 s->dom_front = be_compute_dominance_frontiers(s->irg);
124 /* Ensure, that the ir_edges are computed. */
125 edges_activate(s->irg);
127 /* Compute loop nesting information (for weighting copies) */
128 if (get_irg_loopinfo_state(s->irg) != (loopinfo_valid & loopinfo_cf_consistent))
129 construct_cf_backedges(s->irg);
131 be_check_dominance(s->irg);
134 static void be_main_loop(void)
138 const arch_isa_if_t *isa;
141 isa = arch_env_get_isa(env.arch_env);
143 /* create required irop's */
144 create_bearch_asm_opcodes();
147 for(i = 0, n = get_irp_n_irgs(); i < n; ++i) {
149 ir_graph *irg = get_irp_irg(i);
150 be_main_session_env_t session;
152 DBG((env.dbg, LEVEL_2, "====> IRG: %F\n", irg));
154 dump_ir_block_graph(irg, "-begin");
157 /* Init the session. */
158 be_init_session_env(&session, &env, irg);
160 /* Compute some analyses and prepare the graph for backend use. */
161 prepare_graph(&session);
165 #ifdef DUMP_TRANSFORM
166 dump_ir_block_graph(irg, "-transformed");
172 dump_dominator_information(true);
173 dump_ir_block_graph(irg, "-prepared");
174 dump_dominator_information(false);
177 /* Schedule the graphs. */
178 list_sched(irg, trivial_selector);
182 dump_ir_block_graph_sched(irg, "-sched");
185 /* Verify the schedule */
186 sched_verify_irg(irg);
188 /* Build liveness information */
191 /* Perform the following for each register class. */
192 for(j = 0, m = isa->get_n_reg_class(); j < m; ++j) {
193 be_chordal_env_t *chordal_env;
194 const arch_register_class_t *cls = isa->get_reg_class(j);
195 DBG((env.dbg, LEVEL_1, "----> Reg class: %s\n", cls->name));
198 //be_spill_ilp(&session, cls);
199 be_spill_belady(&session, cls);
201 dump_ir_block_graph_sched(session.irg, "-spill");
205 be_check_pressure(&session, cls);
211 ir_snprintf(buf, sizeof(buf), "%F_%s-live.txt", irg, cls->name);
212 if((f = fopen(buf, "wt")) != NULL) {
213 be_liveness_dump(session.irg, f);
220 chordal_env = be_ra_chordal(&session, cls);
221 #ifdef DUMP_ALLOCATED
222 dump_allocated_irg(env.arch_env, irg, "");
225 /* copy minimization */
226 copystat_collect_cls(chordal_env);
227 be_copy_opt(chordal_env);
229 dump_allocated_irg(env.arch_env, irg, "-copymin");
232 /* ssa destruction */
233 be_ssa_destruction(chordal_env);
234 be_ssa_destruction_check(chordal_env);
235 be_ra_chordal_check(chordal_env);
237 dump_allocated_irg(env.arch_env, irg, "-ssadestr");
240 be_ra_chordal_done(chordal_env);
241 be_numbering_done(irg);
244 dump_ir_block_graph_sched(session.irg, "-end");
251 void be_main(int argc, const char *argv[])
253 FILE *asm_output_file;
257 asm_output_file = fopen(argv[0], "w");
258 firmbe_gen_code(asm_output_file);
259 fclose(asm_output_file);