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kill nodes only reachable via out edges after backend transformation
[libfirm]
/
ir
/
be
/
bemain.c
diff --git
a/ir/be/bemain.c
b/ir/be/bemain.c
index
aac1732
..
97b2b5e
100644
(file)
--- a/
ir/be/bemain.c
+++ b/
ir/be/bemain.c
@@
-218,7
+218,6
@@
const backend_params *be_init(void)
{
be_opt_register();
be_init_modules();
{
be_opt_register();
be_init_modules();
- phi_class_init();
if (isa_if->get_params)
return isa_if->get_params();
if (isa_if->get_params)
return isa_if->get_params();
@@
-374,6
+373,7
@@
static void be_main_loop(FILE *file_handle, const char *cup_name)
static const char suffix[] = ".prof";
be_irg_t *birgs;
unsigned num_birgs;
static const char suffix[] = ".prof";
be_irg_t *birgs;
unsigned num_birgs;
+ ir_graph **irg_list, **backend_irg_list;
be_ra_timer_t *ra_timer;
be_ra_timer_t *ra_timer;
@@
-408,16
+408,20
@@
static void be_main_loop(FILE *file_handle, const char *cup_name)
be_dbg_so(env.db_handle, cup_name);
be_dbg_types(env.db_handle);
be_dbg_so(env.db_handle, cup_name);
be_dbg_types(env.db_handle);
+ /* backend may provide an ordered list of irgs where code should be generated for */
+ irg_list = NEW_ARR_F(ir_graph *, 0);
+ backend_irg_list = arch_isa_get_backend_irg_list(isa, &irg_list);
+
/* we might need 1 birg more for instrumentation constructor */
/* we might need 1 birg more for instrumentation constructor */
- num_birgs = get_irp_n_irgs();
+ num_birgs =
backend_irg_list ? ARR_LEN(backend_irg_list) :
get_irp_n_irgs();
birgs = alloca(sizeof(birgs[0]) * (num_birgs + 1));
/* First: initialize all birgs */
birgs = alloca(sizeof(birgs[0]) * (num_birgs + 1));
/* First: initialize all birgs */
- for(i = 0; i < get_irp_n_irgs(); ++i) {
- ir_graph *irg = get_irp_irg(i);
-
+ for(i = 0; i < num_birgs; ++i) {
+ ir_graph *irg = backend_irg_list ? backend_irg_list[i] : get_irp_irg(i);
initialize_birg(&birgs[i], irg, &env);
}
initialize_birg(&birgs[i], irg, &env);
}
+ DEL_ARR_F(irg_list);
/*
Get the filename for the profiling data.
/*
Get the filename for the profiling data.
@@
-443,7
+447,7
@@
static void be_main_loop(FILE *file_handle, const char *cup_name)
/* For all graphs */
for (i = 0; i < num_birgs; ++i) {
/* For all graphs */
for (i = 0; i < num_birgs; ++i) {
- be_irg_t *birg = &
birgs[i];
+ be_irg_t *birg = &birgs[i];
ir_graph *irg = birg->irg;
optimization_state_t state;
const arch_code_generator_if_t *cg_if;
ir_graph *irg = birg->irg;
optimization_state_t state;
const arch_code_generator_if_t *cg_if;
@@
-524,7
+528,8
@@
static void be_main_loop(FILE *file_handle, const char *cup_name)
be_do_stat_nodes(irg, "03 Prepare");
be_do_stat_nodes(irg, "03 Prepare");
- /* Compute loop nesting information (for weighting copies) */
+ /* Transformation may produce nodes only reachable via out edges, kill them. */
+ be_kill_dead_nodes(irg);
dump(DUMP_PREPARED, irg, "-prepared", dump_ir_block_graph);
BE_TIMER_ONLY(num_nodes_r = get_num_reachable_nodes(irg));
dump(DUMP_PREPARED, irg, "-prepared", dump_ir_block_graph);
BE_TIMER_ONLY(num_nodes_r = get_num_reachable_nodes(irg));