#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 "benumb_t.h"
#include "becopystat.h"
#include "bessadestr.h"
#include "beabi.h"
+#include "belower.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)
+#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 */
-be_options_t be_options = {
+static be_options_t be_options = {
/* ilp server */
"i44pc52.info.uni-karlsruhe.de",
static unsigned dump_flags = 2 * DUMP_FINAL - 1;
/* register allocator to use. */
-static const be_ra_t *ra = &be_ra_external_allocator;
+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 const lc_opt_enum_const_ptr_items_t isa_items[] = {
{ "firm", &firm_isa },
{ "ia32", &ia32_isa_if },
+ { "arm", &arm_isa_if },
+ { "ppc", &ppc32_isa_if },
+ { "mips", &mips_isa_if },
{ NULL, NULL }
};
LC_OPT_ENT_ENUM_PTR("ra", "register allocator", &ra_var),
LC_OPT_ENT_ENUM_PTR("isa", "the instruction set architecture", &isa_var),
+#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 }
};
static be_main_env_t *be_init_env(be_main_env_t *env)
{
- int i, j, n;
-
- memset(env, 0, sizeof(*env));
+ memset(env, 0, sizeof(*env));
obstack_init(&env->obst);
- env->dbg = firm_dbg_register("be.main");
-
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);
/* Register the irn handler of the architecture */
if (arch_isa_get_irn_handler(env->arch_env->isa))
- arch_env_add_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_add_irn_handler(env->arch_env, &be_node_irn_handler);
-
- /*
- * Create the list of caller save registers.
- */
- for(i = 0, n = arch_isa_get_n_reg_class(env->arch_env->isa); i < n; ++i) {
- const arch_register_class_t *cls = arch_isa_get_reg_class(env->arch_env->isa, i);
- for(j = 0; j < cls->n_regs; ++j) {
- const arch_register_t *reg = arch_register_for_index(cls, j);
- if(arch_register_type_is(reg, caller_save))
- obstack_ptr_grow(&env->obst, reg);
- }
- }
- obstack_ptr_grow(&env->obst, NULL);
- env->caller_save = obstack_finish(&env->obst);
+ arch_env_push_irn_handler(env->arch_env, arch_isa_get_irn_handler(env->arch_env->isa));
/*
- * Create the list of callee save registers.
- */
- for(i = 0, n = arch_isa_get_n_reg_class(env->arch_env->isa); i < n; ++i) {
- const arch_register_class_t *cls = arch_isa_get_reg_class(env->arch_env->isa, i);
- for(j = 0; j < cls->n_regs; ++j) {
- const arch_register_t *reg = arch_register_for_index(cls, j);
- if(arch_register_type_is(reg, callee_save))
- obstack_ptr_grow(&env->obst, reg);
- }
- }
- obstack_ptr_grow(&env->obst, NULL);
- env->callee_save = obstack_finish(&env->obst);
+ * 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 void be_done_env(be_main_env_t *env)
{
env->arch_env->isa->impl->done(env->arch_env->isa);
+ be_phi_handler_free(env->phi_handler);
obstack_free(&env->obst, NULL);
}
void (*dumper)(ir_graph *, const char *))
{
if(dump_flags & mask)
- dumper(irg, suffix);
+ be_dump(irg, suffix, dumper);
}
+/**
+ * Prepare a backend graph for code generation.
+ */
static void prepare_graph(be_irg_t *birg)
{
ir_graph *irg = birg->irg;
/* Normalize proj nodes. */
normalize_proj_nodes(irg);
+ /* Make just one return node. */
+ normalize_one_return(irg);
+
/* Remove critical edges */
remove_critical_cf_edges(irg);
/* Ensure, that the ir_edges are computed. */
edges_activate(irg);
- /* Compute loop nesting information (for weighting copies) */
- if (get_irg_loopinfo_state(irg) != (loopinfo_valid & loopinfo_cf_consistent))
- construct_cf_backedges(irg);
-
/* check, if the dominance property is fulfilled. */
be_check_dominance(irg);
+ /* reset the phi handler. */
+ be_phi_handler_reset(birg->main_env->phi_handler);
}
+/**
+ * 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;
/* create the code generator and generate code. */
prepare_graph(&birg);
+ /* some transformations need to be done before abi introduce */
+ arch_code_generator_before_abi(birg.cg);
+
/* implement the ABI conventions. */
birg.abi = be_abi_introduce(&birg);
dump(DUMP_ABI, irg, "-abi", dump_ir_block_graph);
/*
* Since the code generator made a lot of new nodes and skipped
- * a lot of old ones, we should do dead node elim here.
+ * 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);
+ /* add Keeps for should_be_different constrained nodes */
+ // assure_constraints(&birg);
+ dump(DUMP_PREPARED, irg, "-assured", dump_ir_block_graph);
+
/* Schedule the graphs. */
arch_code_generator_before_sched(birg.cg);
- list_sched(isa, irg);
-
- dump(DUMP_SCHED, irg, "-sched", dump_ir_block_graph_sched);
+ list_sched(env.arch_env, irg);
/* connect all stack modifying nodes together (see beabi.c) */
- // be_abi_fix_stack(birg.abi);
+ be_abi_fix_stack_nodes(birg.abi);
+ dump(DUMP_SCHED, irg, "-sched", dump_ir_block_graph_sched);
/* Verify the schedule */
sched_verify_irg(irg);
/* Do register allocation */
arch_code_generator_before_ra(birg.cg);
ra->allocate(&birg);
-
dump(DUMP_RA, irg, "-ra", dump_ir_block_graph_sched);
+ arch_code_generator_after_ra(birg.cg);
+ be_abi_fix_stack_bias(birg.abi);
+
arch_code_generator_done(birg.cg);
dump(DUMP_FINAL, irg, "-end", dump_ir_block_graph_sched);
+ be_abi_free(birg.abi);
}
be_done_env(&env);
}
+/* Main interface to the frontend. */
void be_main(FILE *file_handle)
{
/* never build code for pseudo irgs */
be_node_init();
be_main_loop(file_handle);
}
+
+/** The debug info retriever function. */
+static retrieve_dbg_func retrieve_dbg = NULL;
+
+/* 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;
+}