fixed indent in comment

[libfirm] / ir / be / bemain.c

diff --git a/ir/be/bemain.c b/ir/be/bemain.c
index 9ca04bc..ebe5281 100644 (file)
--- a/ir/be/bemain.c
+++ b/ir/be/bemain.c
@@ -1,7 +1,8 @@
 /**
  * Backend driver.
  * @author Sebastian Hack
- * @date 25.11.2004
+ * @date   25.11.2004
+ * @cvsid  $Id$
  */
 #ifdef HAVE_CONFIG_H
 #include "config.h"
@@ -57,6 +58,7 @@
 #include "belower.h"
 #include "beschedmris.h"
 #include "bestat.h"
+#include "beverify.h"
 
 #define DUMP_INITIAL    (1 << 0)
 #define DUMP_ABI        (1 << 1)
@@ -65,6 +67,12 @@
 #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 */
@@ -77,13 +85,17 @@ static be_options_t be_options = {
 /* 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
 
@@ -111,7 +123,6 @@ static const lc_opt_enum_const_ptr_items_t ra_items[] = {
 
 /* instruction set architectures. */
 static const lc_opt_enum_const_ptr_items_t isa_items[] = {
-       { "firm",    &firm_isa },
        { "ia32",    &ia32_isa_if },
 #if 0
        { "arm",     &arm_isa_if },
@@ -121,6 +132,13 @@ static const lc_opt_enum_const_ptr_items_t isa_items[] = {
        { 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
 };
@@ -133,12 +151,17 @@ static lc_opt_enum_const_ptr_var_t isa_var = {
        (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)),
@@ -186,6 +209,8 @@ int be_parse_arg(const char *arg) {
                return -1;
        }
        return lc_opt_from_single_arg(be_grp_root, NULL, arg, NULL);
+#else
+       return 0;
 #endif /* WITH_LIBCORE */
 }
 
@@ -197,6 +222,16 @@ const static backend_params be_params = {
        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)
 {
@@ -307,6 +342,7 @@ static void be_main_loop(FILE *file_handle)
                ir_graph *irg = get_irp_irg(i);
                const arch_code_generator_if_t *cg_if;
                be_irg_t birg;
+               int save_optimize, save_normalize;
 
                birg.irg      = irg;
                birg.main_env = &env;
@@ -359,11 +395,20 @@ static void be_main_loop(FILE *file_handle)
 
                /* 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);
 
+               /* 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();
+               set_optimize(0);
+               set_opt_normalize(0);
+
                /* add Keeps for should_be_different constrained nodes  */
                /* beware: needs schedule due to usage of be_ssa_constr */
                assure_constraints(&birg);
@@ -375,8 +420,8 @@ static void be_main_loop(FILE *file_handle)
                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);
@@ -391,13 +436,21 @@ static void be_main_loop(FILE *file_handle)
                arch_code_generator_after_ra(birg.cg);
                be_abi_fix_stack_bias(birg.abi);
 
+               /* 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_abi_free(birg.abi);
 
                be_do_stat_nodes(irg, "07 Final");
 
-//             free_ir_graph(irg);
+               /* reset the optimizations */
+               set_optimize(save_optimize);
+               set_opt_normalize(save_normalize);
+
+               /* switched off due to statistics (statistic module needs all irgs) */
+               //              free_ir_graph(irg);
        }
        be_done_env(&env);
 }