#include "bitset.h"
#include "irprog.h"
+#include "irgopt.h"
#include "irgraph.h"
#include "irdump.h"
+#include "phiclass.h"
+#include "irdom_t.h"
+#include "iredges_t.h"
+#include "irloop_t.h"
#include "be_t.h"
-#include "bera_t.h"
+#include "bechordal_t.h"
#include "benumb_t.h"
#include "besched_t.h"
#include "belistsched.h"
#include "belive_t.h"
#include "beutil.h"
#include "bechordal.h"
-#include "bechordal.h"
-#include "bephiopt.h"
-#include "phistat.h"
+#include "bearch.h"
+#include "becopyoptmain.h"
+#include "becopystat.h"
+#include "bessadestr.h"
+#include "benode_t.h"
+#include "beirgmod.h"
+#include "bespillilp.h"
+#include "bespillbelady.h"
+
+// #include "beasm_dump_globals.h"
+// #include "beasm_asm_gnu.h"
-#define DUMP_ALLOCATED
-#undef DUMP_LOCALIZED
+// #include "bearch_firm.h"
+
+#undef DUMP_BEGIN
+#define DUMP_PREPARED
+#define DUMP_SCHED
+#define DUMP_SPILL
+#undef DUMP_ALLOCATED
+#undef DUMP_COPYMIN
+#undef DUMP_SSADESTR
+#undef DUMP_END
#define N_PHASES 256
-typedef struct _be_graph_info_t {
- bitset_t *applied_phases;
-} be_graph_info_t;
+extern const arch_isa_if_t firm_isa;
+extern const arch_isa_if_t ia32_isa;
+
+const struct {
+ const char *name;
+ const arch_isa_if_t *isa;
+} isa_name_arch_map[] = {
+ { "firm", &firm_isa },
+ { "ia32", &ia32_isa }
+};
-static size_t be_info_offset = 0;
+#define N_ISAS (sizeof(isa_name_arch_map) / sizeof(isa_name_arch_map[0]))
-#define get_irg_be_info(irg) get_irg_data(irg, be_graph_info_t, be_info_offset)
+const arch_isa_if_t *get_backend_isa_if(const char *name) {
+ int i;
-static int phase_ids = 1;
-static struct obstack obst;
+ for (i = 0; i < N_ISAS; i++) {
+ if (!strcmp(isa_name_arch_map[i].name, name))
+ return isa_name_arch_map[i].isa;
+ }
-int phase_register(phase_t *phase)
+ fprintf(stderr, "Unsupported ISA '%s'\n", name);
+ assert(0);
+ return NULL;
+}
+
+void be_init(void)
{
- phase->id = phase_ids;
- return phase_ids++;
+ be_sched_init();
+ be_liveness_init();
+ be_numbering_init();
+ be_ra_chordal_init();
+ be_copy_opt_init();
+ copystat_init();
+ phi_class_init();
}
-void phase_applied(const ir_graph *irg, const phase_t *phase)
+static be_main_env_t *be_init_env(be_main_env_t *env, const arch_isa_if_t *isa)
{
- be_graph_info_t *info = get_irg_be_info(irg);
+ obstack_init(&env->obst);
+ env->dbg = firm_dbg_register("be.main");
+ firm_dbg_set_mask(env->dbg, SET_LEVEL_1);
- if(!info->applied_phases)
- info->applied_phases = bitset_obstack_alloc(&obst, N_PHASES);
+ env->arch_env = obstack_alloc(&env->obst, sizeof(env->arch_env[0]));
+ arch_env_init(env->arch_env, isa);
+ env->arch_env->isa->init();
- bitset_set(info->applied_phases, phase->id);
+ env->node_factory = obstack_alloc(&env->obst, sizeof(*env->node_factory));
+ be_node_factory_init(env->node_factory, isa);
+
+ /* Register the irn handler of the architecture */
+ if (isa->irn_handler)
+ arch_env_add_irn_handler(env->arch_env, isa->irn_handler);
+
+ /*
+ * Register the node handler of the back end infrastructure.
+ * This irn handler takes care of the platform independent
+ * spill, reload and perm nodes.
+ */
+ arch_env_add_irn_handler(env->arch_env, be_node_get_irn_handler(env->node_factory));
+
+ return env;
}
-int phase_depends_on(const ir_graph *irg, const phase_t *phase, int n, ...)
+static be_main_session_env_t *
+be_init_session_env(be_main_session_env_t *env,
+ be_main_env_t *main_env, ir_graph *irg)
{
- int errors = 0;
- int i;
- va_list args;
+ env->main_env = main_env;
+ env->irg = irg;
- if(n > 0) {
- const be_graph_info_t *info = get_irg_be_info(irg);
- const bitset_t *applied_phases = info->applied_phases;
+ return env;
+}
- va_start(args, n);
+static void prepare_graph(be_main_session_env_t *s)
+{
+ /* set the current graph (this is important for several firm functions) */
+ current_ir_graph = s->irg;
- for(i = 0; i < n; ++i) {
- const phase_t *dep_phase = va_arg(args, const phase_t *);
+ /* Let the isa prepare the graph. */
+ s->main_env->arch_env->isa->prepare_graph(s->irg);
- if(!applied_phases || !bitset_is_set(applied_phases, dep_phase->id)) {
- errors++;
- fprintf(stderr, "phase dependency unfulfilled: \"%s\" depends on \"%s\"\n",
- phase->name, dep_phase->name);
- }
- }
+ /* Normalize proj nodes. */
+ normalize_proj_nodes(s->irg);
- va_end(args);
+ /* Remove critical edges */
+ remove_critical_cf_edges(s->irg);
- assert(errors > 0 && "There were phase dependency errors");
- }
+ /* Compute the dominance information. */
+ free_dom_and_peace(s->irg);
+ compute_doms(s->irg);
- return errors;
-}
+ /* Compute the dominance frontiers */
+ s->dom_front = be_compute_dominance_frontiers(s->irg);
-void be_init(void)
-{
- obstack_init(&obst);
- be_info_offset = register_additional_graph_data(sizeof(be_graph_info_t));
-
- be_sched_init();
- be_liveness_init();
- be_numbering_init();
- be_ra_init();
- be_ra_chordal_init();
- be_phi_opt_init();
-}
+ /* Ensure, that the ir_edges are computed. */
+ edges_activate(s->irg);
-extern void be_ra_chordal(ir_graph *irg);
+ /* Compute loop nesting information (for weighting copies) */
+ if (get_irg_loopinfo_state(s->irg) != (loopinfo_valid & loopinfo_cf_consistent))
+ construct_cf_backedges(s->irg);
-static void be_main_loop(void)
+ be_check_dominance(s->irg);
+}
+
+static void be_main_loop(const arch_isa_if_t *isa)
{
- int i, n;
+ int i, j, n, m;
+ be_main_env_t env;
+
+ be_init_env(&env, isa);
+ /* For all graphs */
for(i = 0, n = get_irp_n_irgs(); i < n; ++i) {
ir_graph *irg = get_irp_irg(i);
+ be_main_session_env_t session;
- localize_consts(irg);
-#ifdef DUMP_LOCALIZED
- dump_consts_local(0);
- dump_ir_block_graph(irg, "-local-const");
+ DBG((env.dbg, LEVEL_2, "====> IRG: %F\n", irg));
+#ifdef DUMP_BEGIN
+ dump_ir_block_graph(irg, "-begin");
#endif
- be_numbering(irg);
- list_sched(irg, trivial_selector, NULL);
+
+ /* Init the session. */
+ be_init_session_env(&session, &env, irg);
+
+ /* Compute some analyses and prepare the graph for backend use. */
+ prepare_graph(&session);
+
+#ifdef DUMP_PREPARED
+ dump_dominator_information(1);
+ dump_ir_block_graph(irg, "-prepared");
+ dump_dominator_information(0);
+#endif
+
+ /* Schedule the graphs. */
+ list_sched(irg, trivial_selector);
+
+// TODO: add architecture dependent schedule magic
+// be_sched_imm(irg);
+
+#ifdef DUMP_SCHED
+ dump_ir_block_graph_sched(irg, "-sched");
+#endif
+
+ /* Verify the schedule */
+ sched_verify_irg(irg);
+
+ /* Build liveness information */
be_liveness(irg);
- be_ra_chordal(irg);
+ /* Perform the following for each register class. */
+ for(j = 0, m = isa->get_n_reg_class(); j < m; ++j) {
+ be_chordal_env_t *chordal_env;
+ const arch_register_class_t *cls = isa->get_reg_class(j);
+ DBG((env.dbg, LEVEL_1, "----> Reg class: %s\n", cls->name));
+
+ /* spilling */
+ //be_spill_ilp(&session, cls);
+ be_spill_belady(&session, cls);
+#ifdef DUMP_SPILL
+ dump_ir_block_graph_sched(session.irg, "-spill");
+#endif
+ be_liveness(irg);
+ be_numbering(irg);
+ be_check_pressure(&session, cls);
+
+#if 0
+ {
+ FILE *f;
+ char buf[128];
+ ir_snprintf(buf, sizeof(buf), "%F_%s-live.txt", irg, cls->name);
+ if((f = fopen(buf, "wt")) != NULL) {
+ be_liveness_dump(session.irg, f);
+ fclose(f);
+ }
+ }
+#endif
+
+ /* allocation */
+ chordal_env = be_ra_chordal(&session, cls);
#ifdef DUMP_ALLOCATED
- dump_allocated_irg(irg, "");
+ dump_allocated_irg(env.arch_env, irg, "");
+#endif
+
+ /* copy minimization */
+ copystat_collect_cls(chordal_env);
+ be_copy_opt(chordal_env);
+#ifdef DUMP_COPYMIN
+ dump_allocated_irg(env.arch_env, irg, "-copymin");
#endif
- //be_phi_opt(irg);
- be_ra_chordal_done(irg);
- be_numbering_done(irg);
+ /* ssa destruction */
+ be_ssa_destruction(chordal_env);
+ be_ssa_destruction_check(chordal_env);
+ be_ra_chordal_check(chordal_env);
+#ifdef DUMP_SSADESTR
+ dump_allocated_irg(env.arch_env, irg, "-ssadestr");
+#endif
+
+ be_ra_chordal_done(chordal_env);
+ be_numbering_done(irg);
+ }
+#ifdef DUMP_END
+ dump_ir_block_graph_sched(session.irg, "-end");
+#endif
+ copystat_dump(irg);
}
}
+/**
+ * Backend main driver. Expects the following arguments:
+ * argc = 2
+ * argv[0] = backend isa name
+ * argv[1] = output file name
+ */
void be_main(int argc, const char *argv[])
{
- be_main_loop();
+ FILE *asm_output_file;
+ const arch_isa_if_t *isa;
+
+ /* get requested isa */
+ isa = get_backend_isa_if(argv[0]);
+
+ be_main_loop(isa);
+
+ /* generate code if supported by isa */
+ if (isa->codegen) {
+ asm_output_file = fopen(argv[1], "w");
+ isa->codegen(asm_output_file);
+ fclose(asm_output_file);
+ }
}
projects / libfirm / blobdiff