/**
* Backend driver.
* @author Sebastian Hack
- * @date 25.11.2004
+ * @date 25.11.2004
+ * @cvsid $Id$
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#define DUMP_RA (1 << 4)
#define DUMP_FINAL (1 << 5)
+enum {
+ BE_VRFY_OFF,
+ BE_VRFY_WARN,
+ BE_VRFY_ASSERT
+};
+
/* options visible for anyone */
static be_options_t be_options = {
/* ilp server */
/* dump flags */
static unsigned dump_flags = 0;
+/* verify options */
+static unsigned vrfy_option = BE_VRFY_WARN;
+
/* 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;
+/* mris option */
+static int be_enable_mris = 0;
#ifdef WITH_LIBCORE
{ NULL, NULL }
};
+/* verify options. */
+static const lc_opt_enum_int_items_t vrfy_items[] = {
+ { "off", BE_VRFY_OFF },
+ { "warn", BE_VRFY_WARN },
+ { "assert", BE_VRFY_ASSERT },
+ { NULL, 0 }
+};
static lc_opt_enum_mask_var_t dump_var = {
&dump_flags, dump_items
};
(const void **) &isa_if, isa_items
};
+static lc_opt_enum_int_var_t vrfy_var = {
+ &vrfy_option, vrfy_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),
+ LC_OPT_ENT_BOOL ("mris", "enable mris schedule preparation", &be_enable_mris),
+ LC_OPT_ENT_ENUM_PTR ("vrfy", "verify the backend irg (off, warn, assert)", &vrfy_var),
#ifdef WITH_ILP
LC_OPT_ENT_STR ("ilp.server", "the ilp server name", be_options.ilp_server, sizeof(be_options.ilp_server)),
NULL,
};
+/* Perform schedule verification if requested. */
+static void be_sched_vrfy(ir_graph *irg, int vrfy_opt) {
+ if (vrfy_opt == BE_VRFY_WARN) {
+ be_verify_schedule(irg);
+ }
+ else if (vrfy_opt == BE_VRFY_ASSERT) {
+ assert(be_verify_schedule(irg) && "Schedule verification failed.");
+ }
+}
+
/* Initialize the Firm backend. Must be run BEFORE init_firm()! */
const backend_params *be_init(void)
{
return &be_params;
}
+/**
+ * Initializes the main environment for the backend.
+ *
+ * @param env an empty environment
+ * @param file_handle the file handle where the output will be written to
+ */
static be_main_env_t *be_init_env(be_main_env_t *env, FILE *file_handle)
{
memset(env, 0, sizeof(*env));
obstack_free(&env->obst, NULL);
}
+/**
+ * A wrapper around a firm dumper. Dumps only, if
+ * flags are enabled.
+ *
+ * @param mask a bitmask containing the reason what will be dumped
+ * @param irg the IR graph to dump
+ * @param suffix the suffix for the dumper
+ * @param dumper the dumper to be called
+ */
static void dump(int mask, ir_graph *irg, const char *suffix,
void (*dumper)(ir_graph *, const char *))
{
* The Firm backend main loop.
* Do architecture specific lowering for all graphs
* and call the architecture specific code generator.
+ *
+ * @param file_handle the file handle the output will be written to
*/
static void be_main_loop(FILE *file_handle)
{
isa = arch_env_get_isa(env.arch_env);
- // /* for debugging, anchors helps */
+ /* for debugging, anchors helps */
// dump_all_anchors(1);
/* For all graphs */
ir_graph *irg = get_irp_irg(i);
const arch_code_generator_if_t *cg_if;
be_irg_t birg;
- int save_optimize, save_normalize;
+ optimization_state_t state;
birg.irg = irg;
birg.main_env = &env;
/* Schedule the graphs. */
arch_code_generator_before_sched(birg.cg);
- list_sched(&birg, be_disable_mris);
+ list_sched(&birg, be_enable_mris);
dump(DUMP_SCHED, irg, "-sched", dump_ir_block_graph_sched);
- DEBUG_ONLY(be_verify_schedule(birg.irg);)
+ /* check schedule */
+ be_sched_vrfy(birg.irg, vrfy_option);
be_do_stat_nodes(irg, "04 Schedule");
/* we switch off optimizations here, because they might cause trouble */
- save_optimize = get_optimize();
- save_normalize = get_opt_normalize();
+ save_optimization_state(&state);
set_optimize(0);
set_opt_normalize(0);
be_abi_fix_stack_nodes(birg.abi);
dump(DUMP_SCHED, irg, "-fix_stack", dump_ir_block_graph_sched);
- /* Verify the schedule */
- assert(sched_verify_irg(irg));
+ /* check schedule */
+ be_sched_vrfy(birg.irg, vrfy_option);
/* do some statistics */
be_do_stat_reg_pressure(&birg);
arch_code_generator_after_ra(birg.cg);
be_abi_fix_stack_bias(birg.abi);
- DEBUG_ONLY(be_verify_schedule(birg.irg);)
+ /* check schedule */
+ be_sched_vrfy(birg.irg, vrfy_option);
arch_code_generator_done(birg.cg);
dump(DUMP_FINAL, irg, "-end", dump_ir_extblock_graph_sched);
be_do_stat_nodes(irg, "07 Final");
- /* reset the optimizations */
- set_optimize(save_optimize);
- set_opt_normalize(save_normalize);
+ restore_optimization_state(&state);
- /* switched of due to statistics (statistic module needs all irgs) */
+ /* switched off due to statistics (statistic module needs all irgs) */
// free_ir_graph(irg);
}
be_done_env(&env);
projects / libfirm / blobdiff