#endif
#include <stdarg.h>
-#include <mcheck.h>
+
+#ifdef WITH_LIBCORE
+#include <libcore/lc_opts.h>
+#include <libcore/lc_opts_enum.h>
+#endif /* WITH_LIBCORE */
#include "obst.h"
#include "bitset.h"
#include "irdom_t.h"
#include "iredges_t.h"
#include "irloop_t.h"
+#include "irtools.h"
+#include "return.h"
+
+#include "bearch.h"
+#include "firm/bearch_firm.h"
+#include "ia32/bearch_ia32.h"
+#include "arm/bearch_arm.h"
+#include "ppc32/bearch_ppc32.h"
+#include "mips/bearch_mips.h"
#include "be_t.h"
-#include "bechordal_t.h"
#include "benumb_t.h"
+#include "beutil.h"
+#include "benode_t.h"
+#include "beirgmod.h"
#include "besched_t.h"
#include "belistsched.h"
#include "belive_t.h"
-#include "beutil.h"
-#include "bechordal.h"
-#include "bearch.h"
-#include "becopyoptmain.h"
+#include "bespillilp.h"
+#include "bespillbelady.h"
+#include "bera.h"
+#include "beraextern.h"
+#include "bechordal_t.h"
+#include "beifg.h"
+#include "beifg_impl.h"
+#include "becopyopt.h"
#include "becopystat.h"
#include "bessadestr.h"
-#include "bearch_firm.h"
-#include "benode_t.h"
-#include "beirgmod.h"
-#include "bespillilp.h"
-
-#include "beasm_dump_globals.h"
-#include "beasm_asm_gnu.h"
+#include "beabi.h"
+#include "belower.h"
+#include "beschedmris.h"
+#include "bestat.h"
+#include "beverify.h"
+
+#define DUMP_INITIAL (1 << 0)
+#define DUMP_ABI (1 << 1)
+#define DUMP_SCHED (1 << 2)
+#define DUMP_PREPARED (1 << 3)
+#define DUMP_RA (1 << 4)
+#define DUMP_FINAL (1 << 5)
+
+/* options visible for anyone */
+static be_options_t be_options = {
+ /* ilp server */
+ "i44pc52.info.uni-karlsruhe.de",
+
+ /* ilp solver */
+ "cplex"
+};
+
+/* dump flags */
+static unsigned dump_flags = 0;
+
+/* register allocator to use. */
+static const be_ra_t *ra = &be_ra_chordal_allocator;
+
+/* back end instruction set architecture to use */
+static const arch_isa_if_t *isa_if = &ia32_isa_if;
+
+static int be_disable_mris = 0;
+
+#ifdef WITH_LIBCORE
+
+static lc_opt_entry_t *be_grp_root = NULL;
+
+/* possible dumping options */
+static const lc_opt_enum_mask_items_t dump_items[] = {
+ { "none", 0 },
+ { "initial", DUMP_INITIAL },
+ { "abi", DUMP_ABI },
+ { "sched", DUMP_SCHED },
+ { "prepared", DUMP_PREPARED },
+ { "regalloc", DUMP_RA },
+ { "final", DUMP_FINAL },
+ { "all", 2 * DUMP_FINAL - 1 },
+ { NULL, 0 }
+};
+
+/* register allocators */
+static const lc_opt_enum_const_ptr_items_t ra_items[] = {
+ { "chordal", &be_ra_chordal_allocator },
+ { "external", &be_ra_external_allocator },
+ { NULL, NULL }
+};
+
+/* instruction set architectures. */
+static const lc_opt_enum_const_ptr_items_t isa_items[] = {
+ { "ia32", &ia32_isa_if },
+#if 0
+ { "arm", &arm_isa_if },
+ { "ppc32", &ppc32_isa_if },
+ { "mips", &mips_isa_if },
+#endif
+ { NULL, NULL }
+};
+
+static lc_opt_enum_mask_var_t dump_var = {
+ &dump_flags, dump_items
+};
+
+static lc_opt_enum_const_ptr_var_t ra_var = {
+ (const void **) &ra, ra_items
+};
+
+static lc_opt_enum_const_ptr_var_t isa_var = {
+ (const void **) &isa_if, isa_items
+};
+
+static const lc_opt_table_entry_t be_main_options[] = {
+ LC_OPT_ENT_ENUM_MASK("dump", "dump irg on several occasions", &dump_var),
+ LC_OPT_ENT_ENUM_PTR ("ra", "register allocator", &ra_var),
+ LC_OPT_ENT_ENUM_PTR ("isa", "the instruction set architecture", &isa_var),
+ LC_OPT_ENT_NEGBOOL ("noomitfp", "do not omit frame pointer", &be_omit_fp),
+ LC_OPT_ENT_NEGBOOL ("nomris", "disable mris schedule preparation", &be_disable_mris),
+
+#ifdef WITH_ILP
+ LC_OPT_ENT_STR ("ilp.server", "the ilp server name", be_options.ilp_server, sizeof(be_options.ilp_server)),
+ LC_OPT_ENT_STR ("ilp.solver", "the ilp solver name", be_options.ilp_solver, sizeof(be_options.ilp_solver)),
+#endif /* WITH_ILP */
+ { NULL }
+};
+
+#endif /* WITH_LIBCORE */
+
+void be_opt_register(void)
+{
+#ifdef WITH_LIBCORE
+ int i;
+ lc_opt_entry_t *be_grp_ra;
+ static int run_once = 0;
+
+ if (! run_once) {
+ run_once = 1;
+ be_grp_root = lc_opt_get_grp(firm_opt_get_root(), "be");
+ be_grp_ra = lc_opt_get_grp(be_grp_root, "ra");
+
+ lc_opt_add_table(be_grp_root, be_main_options);
+
+ /* register allocator options */
+ for(i = 0; ra_items[i].name != NULL; ++i) {
+ const be_ra_t *ra = ra_items[i].value;
+ ra->register_options(be_grp_ra);
+ }
-#undef DUMP_ALLOCATED
+ /* register isa options */
+ for(i = 0; isa_items[i].name != NULL; ++i) {
+ const arch_isa_if_t *isa = isa_items[i].value;
+ isa->register_options(be_grp_root);
+ }
+ }
+#endif /* WITH_LIBCORE */
+}
-#define N_PHASES 256
+/* Parse one argument. */
+int be_parse_arg(const char *arg) {
+#ifdef WITH_LIBCORE
+ if (strcmp(arg, "help") == 0 || (arg[0] == '?' && arg[1] == '\0')) {
+ lc_opt_print_help(be_grp_root, stdout);
+ return -1;
+ }
+ return lc_opt_from_single_arg(be_grp_root, NULL, arg, NULL);
+#endif /* WITH_LIBCORE */
+}
+/** The be parameters returned by default, all off. */
+const static backend_params be_params = {
+ NULL,
+ NULL,
+ 0,
+ NULL,
+};
-void be_init(void)
+/* Initialize the Firm backend. Must be run BEFORE init_firm()! */
+const backend_params *be_init(void)
{
+ be_opt_register();
+
be_sched_init();
be_liveness_init();
be_numbering_init();
- be_ra_chordal_init();
be_copy_opt_init();
copystat_init();
+ phi_class_init();
+
+ if (isa_if->get_params)
+ return isa_if->get_params();
+ return &be_params;
}
-static be_main_env_t *be_init_env(be_main_env_t *env)
+static be_main_env_t *be_init_env(be_main_env_t *env, FILE *file_handle)
{
- const arch_isa_if_t *isa = &firm_isa;
-
- obstack_init(&env->obst);
- env->dbg = firm_dbg_register("be.main");
- firm_dbg_set_mask(env->dbg, SET_LEVEL_1);
-
- env->arch_env = obstack_alloc(&env->obst, sizeof(env->arch_env[0]));
- arch_env_init(env->arch_env, isa);
- env->arch_env->isa->init();
-
- env->node_factory = obstack_alloc(&env->obst, sizeof(*env->node_factory));
- be_node_factory_init(env->node_factory, isa);
-
- arch_env_add_irn_handler(env->arch_env, &firm_irn_handler);
- arch_env_add_irn_handler(env->arch_env,
- be_node_get_irn_handler(env->node_factory));
-
- return env;
+ memset(env, 0, sizeof(*env));
+ obstack_init(&env->obst);
+ env->arch_env = obstack_alloc(&env->obst, sizeof(env->arch_env[0]));
+ env->options = &be_options;
+ FIRM_DBG_REGISTER(env->dbg, "be.main");
+
+ arch_env_init(env->arch_env, isa_if, file_handle);
+
+ /* Register the irn handler of the architecture */
+ if (arch_isa_get_irn_handler(env->arch_env->isa))
+ arch_env_push_irn_handler(env->arch_env, arch_isa_get_irn_handler(env->arch_env->isa));
+
+ /*
+ * 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_push_irn_handler(env->arch_env, &be_node_irn_handler);
+ env->phi_handler = be_phi_handler_new(env->arch_env);
+ arch_env_push_irn_handler(env->arch_env, env->phi_handler);
+
+ return env;
}
-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)
+static void be_done_env(be_main_env_t *env)
{
- env->main_env = main_env;
- env->irg = irg;
+ env->arch_env->isa->impl->done(env->arch_env->isa);
+ be_phi_handler_free(env->phi_handler);
+ obstack_free(&env->obst, NULL);
+}
- return env;
+static void dump(int mask, ir_graph *irg, const char *suffix,
+ void (*dumper)(ir_graph *, const char *))
+{
+ if(dump_flags & mask)
+ be_dump(irg, suffix, dumper);
}
-static void prepare_graph(be_main_session_env_t *s)
+/**
+ * Prepare a backend graph for code generation.
+ */
+static void prepare_graph(be_irg_t *birg)
{
- /* set the current graph (this is important for several firm functions) */
- current_ir_graph = s->irg;
+ ir_graph *irg = birg->irg;
+
+ /* Normalize proj nodes. */
+ normalize_proj_nodes(irg);
- /* Let the isa prepare the graph. */
- s->main_env->arch_env->isa->prepare_graph(s->irg);
+ /* Make just one return node. */
+ normalize_one_return(irg);
/* Remove critical edges */
- remove_critical_cf_edges(s->irg);
+ remove_critical_cf_edges(irg);
/* Compute the dominance information. */
- free_dom_and_peace(s->irg);
- compute_doms(s->irg);
-
- /* Compute the dominance frontiers */
- s->dom_front = be_compute_dominance_frontiers(s->irg);
+ free_dom(irg);
+ compute_doms(irg);
/* Ensure, that the ir_edges are computed. */
- edges_activate(s->irg);
+ edges_activate(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);
+ /* check, if the dominance property is fulfilled. */
+ be_check_dominance(irg);
- dump_dominator_information(true);
- dump_ir_block_graph(s->irg, "-prepared");
- dump_dominator_information(false);
+ /* reset the phi handler. */
+ be_phi_handler_reset(birg->main_env->phi_handler);
}
-static void be_main_loop(void)
+/**
+ * The Firm backend main loop.
+ * Do architecture specific lowering for all graphs
+ * and call the architecture specific code generator.
+ */
+static void be_main_loop(FILE *file_handle)
{
int i, n;
+ arch_isa_t *isa;
be_main_env_t env;
- const arch_isa_if_t *isa;
- be_init_env(&env);
+ be_init_env(&env, file_handle);
+
isa = arch_env_get_isa(env.arch_env);
+ // /* for debugging, anchors helps */
+ // dump_all_anchors(1);
+
/* For all graphs */
- for(i = 0, n = get_irp_n_irgs(); i < n; ++i) {
- int j, m;
+ for (i = 0, n = get_irp_n_irgs(); i < n; ++i) {
ir_graph *irg = get_irp_irg(i);
- be_main_session_env_t session;
+ const arch_code_generator_if_t *cg_if;
+ be_irg_t birg;
+
+ birg.irg = irg;
+ birg.main_env = &env;
+
+ DBG((env.dbg, LEVEL_2, "====> IRG: %F\n", irg));
+ dump(DUMP_INITIAL, irg, "-begin", dump_ir_block_graph);
+
+ be_stat_init_irg(env.arch_env, irg);
+ be_do_stat_nodes(irg, "01 Begin");
+
+ /* set the current graph (this is important for several firm functions) */
+ current_ir_graph = birg.irg;
+
+ /* Get the code generator interface. */
+ cg_if = isa->impl->get_code_generator_if(isa);
+
+ /* get a code generator for this graph. */
+ birg.cg = cg_if->init(&birg);
+
+ /* create the code generator and generate code. */
+ prepare_graph(&birg);
- DBG((env.dbg, LEVEL_1, "====> IRG: %F\n", irg));
+ /* some transformations need to be done before abi introduce */
+ arch_code_generator_before_abi(birg.cg);
- /* Init the session. */
- be_init_session_env(&session, &env, irg);
+ /* implement the ABI conventions. */
+ birg.abi = be_abi_introduce(&birg);
+ dump(DUMP_ABI, irg, "-abi", dump_ir_block_graph);
- /* Compute some analyses and prepare the graph for backend use. */
- prepare_graph(&session);
+ be_do_stat_nodes(irg, "02 Abi");
+
+ /* generate code */
+ arch_code_generator_prepare_graph(birg.cg);
+
+ be_do_stat_nodes(irg, "03 Prepare");
+
+ /*
+ * Since the code generator made a lot of new nodes and skipped
+ * a lot of old ones, we should do dead node elimination here.
+ * Note that this requires disabling the edges here.
+ */
+ edges_deactivate(irg);
+ //dead_node_elimination(irg);
+ edges_activate(irg);
+
+ /* Compute loop nesting information (for weighting copies) */
+ construct_cf_backedges(irg);
+
+ dump(DUMP_PREPARED, irg, "-prepared", dump_ir_block_graph);
/* Schedule the graphs. */
- list_sched(irg, trivial_selector);
- dump_ir_block_graph_sched(irg, "-sched");
+ arch_code_generator_before_sched(birg.cg);
+ list_sched(&birg, be_disable_mris);
+ dump(DUMP_SCHED, irg, "-sched", dump_ir_block_graph_sched);
- /* Verify the schedule */
- sched_verify_irg(irg);
+ DEBUG_ONLY(be_verify_schedule(birg.irg);)
- /* Build liveness information */
- be_liveness(irg);
+ be_do_stat_nodes(irg, "04 Schedule");
- copystat_reset();
- copystat_collect_irg(irg, env.arch_env);
+ /* add Keeps for should_be_different constrained nodes */
+ /* beware: needs schedule due to usage of be_ssa_constr */
+ assure_constraints(&birg);
+ dump(DUMP_SCHED, irg, "-assured", dump_ir_block_graph_sched);
- /* 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);
+ be_do_stat_nodes(irg, "05 Constraints");
- DBG((env.dbg, LEVEL_1, "----> Reg class: %s\n", cls->name));
+ /* connect all stack modifying nodes together (see beabi.c) */
+ be_abi_fix_stack_nodes(birg.abi);
+ dump(DUMP_SCHED, irg, "-fix_stack", dump_ir_block_graph_sched);
- be_spill_ilp(&session, cls);
- dump_ir_block_graph_sched(session.irg, "-spill");
+ /* Verify the schedule */
+ assert(sched_verify_irg(irg));
- be_liveness(irg);
- be_numbering(irg);
- be_check_pressure(&session, cls);
+ /* do some statistics */
+ be_do_stat_reg_pressure(&birg);
-#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
+ /* Do register allocation */
+ arch_code_generator_before_ra(birg.cg);
+ ra->allocate(&birg);
+ dump(DUMP_RA, irg, "-ra", dump_ir_block_graph_sched);
- chordal_env = be_ra_chordal(&session, cls);
+ be_do_stat_nodes(irg, "06 Register Allocation");
-#ifdef DUMP_ALLOCATED
- dump_allocated_irg(env.arch_env, irg, "");
-#endif
-#if 0
- copystat_collect_cls(chordal_env);
+ arch_code_generator_after_ra(birg.cg);
+ be_abi_fix_stack_bias(birg.abi);
- be_copy_opt(chordal_env);
+ DEBUG_ONLY(be_verify_schedule(birg.irg);)
- be_ssa_destruction(chordal_env);
- be_ssa_destruction_check(chordal_env);
-#endif
- be_ra_chordal_check(chordal_env);
+ arch_code_generator_done(birg.cg);
+ dump(DUMP_FINAL, irg, "-end", dump_ir_extblock_graph_sched);
+ be_abi_free(birg.abi);
- be_ra_chordal_done(chordal_env);
- be_numbering_done(irg);
- }
- dump_ir_block_graph_sched(session.irg, "-post");
+ be_do_stat_nodes(irg, "07 Final");
- copystat_dump(irg);
- copystat_dump_pretty(irg);
+// free_ir_graph(irg);
}
+ be_done_env(&env);
}
-void be_main(int argc, const char *argv[])
+/* Main interface to the frontend. */
+void be_main(FILE *file_handle)
{
- assembler_t *gnu_assembler;
- FILE *asm_output_file;
+ /* never build code for pseudo irgs */
+ set_visit_pseudo_irgs(0);
- mtrace();
- be_main_loop();
- muntrace();
+ be_node_init();
+ be_main_loop(file_handle);
+}
- gnu_assembler = gnuasm_create_assembler();
- asm_output_file = fopen("asm_output.asm", "w");
+/** The debug info retriever function. */
+static retrieve_dbg_func retrieve_dbg = NULL;
- asm_dump_globals(gnu_assembler);
- gnuasm_dump(gnu_assembler, asm_output_file);
- gnuasm_delete_assembler(gnu_assembler);
- fclose(asm_output_file);
+/* Sets a debug info retriever. */
+void be_set_debug_retrieve(retrieve_dbg_func func) {
+ retrieve_dbg = func;
+}
+/* Retrieve the debug info. */
+const char *be_retrieve_dbg_info(const dbg_info *dbg, unsigned *line) {
+ if (retrieve_dbg)
+ return retrieve_dbg(dbg, line);
+ *line = 0;
+ return NULL;
}
projects / libfirm / blobdiff