/**
- *
- * @file firm_opt.c -- Firm-generating back end optimizations.
- *
- * (C) 2005-2010 Michael Beck beck@ipd.info.uni-karlsruhe.de
- *
- * $Id$
+ * (C) 2005-2010
+ * @file
+ * @author Michael Beck, Matthias Braun
+ * @brief Firm-generating back end optimizations.
*/
-
#include <config.h>
#include <stdbool.h>
int clone_threshold; /**< The threshold value for procedure cloning. */
unsigned inline_maxsize; /**< Maximum function size for inlining. */
unsigned inline_threshold;/**< Inlining benefice threshold. */
- bool verify_edges; /**< verify edges */
};
/** statistic options */
struct a_firm_dump {
bool debug_print; /**< enable debug print */
bool all_types; /**< dump the All_types graph */
- bool no_blocks; /**< dump non-blocked graph */
- bool extbb; /**< dumps extended basic blocks */
bool ir_graph; /**< dump all graphs */
bool all_phases; /**< dump the IR graph after all phases */
bool statistic; /**< Firm statistic setting */
.clone_threshold = DEFAULT_CLONE_THRESHOLD,
.inline_maxsize = 750,
.inline_threshold = 0,
- .verify_edges = false,
};
/* dumping options */
static struct a_firm_dump firm_dump = {
.debug_print = false,
.all_types = false,
- .no_blocks = false,
- .extbb = false,
.ir_graph = false,
.all_phases = false,
.statistic = STAT_NONE,
{ X("verify-off"), &firm_opt.verify, FIRM_VERIFICATION_OFF, "disable node verification" },
{ X("verify-on"), &firm_opt.verify, FIRM_VERIFICATION_ON, "enable node verification" },
{ X("verify-report"), &firm_opt.verify, FIRM_VERIFICATION_REPORT, "node verification, report only" },
- { X("check-all"), &firm_opt.check_all, 1, "enable checking all Firm phases" },
- { X("no-check-all"), &firm_opt.check_all, 0, "disable checking all Firm phases" },
- { X("verify-edges-on"), &firm_opt.verify_edges, 1, "enable out edge verification" },
- { X("verify-edges-off"), &firm_opt.verify_edges, 0, "disable out edge verification" },
/* dumping */
{ X("dump-ir"), &firm_dump.ir_graph, 1, "dump IR graph" },
{ X("dump-all-types"), &firm_dump.all_types, 1, "dump graph of all types" },
- { X("dump-no-blocks"), &firm_dump.no_blocks, 1, "dump non-blocked graph" },
- { X("dump-extbb"), &firm_dump.extbb, 1, "dump extended basic blocks" },
{ X("dump-all-phases"), &firm_dump.all_phases, 1, "dump graphs for all optimization phases" },
{ X("dump-filter=<string>"), NULL, 0, "set dumper filter" },
static ir_timer_t *t_vcg_dump;
static ir_timer_t *t_verify;
static ir_timer_t *t_all_opt;
+static ir_timer_t *t_backend;
static bool do_irg_opt(ir_graph *irg, const char *name);
/** dump all the graphs depending on cond */
}
/* entities of runtime functions */
-ir_entity_ptr rts_entities[rts_max];
+ir_entity *rts_entities[rts_max];
/**
* Map runtime functions.
static void rts_map(void)
{
static const struct {
- ir_entity_ptr *ent; /**< address of the rts entity */
+ ir_entity **ent; /**< address of the rts entity */
i_mapper_func func; /**< mapper function. */
} mapper[] = {
/* integer */
static int *irg_dump_no;
+typedef enum opt_target {
+ OPT_TARGET_IRG, /**< optimization function works on a single graph */
+ OPT_TARGET_IRP /**< optimization function works on the complete program */
+} opt_target_t;
+
+typedef enum opt_flags {
+ OPT_FLAG_NONE = 0,
+ OPT_FLAG_ENABLED = 1 << 0, /**< enable the optimization */
+ OPT_FLAG_NO_DUMP = 1 << 1, /**< don't dump after transformation */
+ OPT_FLAG_NO_VERIFY = 1 << 2, /**< don't verify after transformation */
+ OPT_FLAG_HIDE_OPTIONS = 1 << 3, /**< do not automatically process
+ -foptions for this transformation */
+ OPT_FLAG_ESSENTIAL = 1 << 4, /**< output won't work without this pass
+ so we need it even with -O0 */
+} opt_flags_t;
+
+typedef void (*transform_irg_func)(ir_graph *irg);
+typedef void (*transform_irp_func)(void);
+
+typedef struct {
+ opt_target_t target;
+ const char *name;
+ union {
+ transform_irg_func transform_irg;
+ transform_irp_func transform_irp;
+ } u;
+ const char *description;
+ opt_flags_t flags;
+ ir_timer_t *timer;
+} opt_config_t;
+
+static opt_config_t *get_opt(const char *name);
+
static void do_stred(ir_graph *irg)
{
opt_osr(irg, osr_flag_default | osr_flag_keep_reg_pressure | osr_flag_ignore_x86_shift);
static void after_inline_opt(ir_graph *irg)
{
+ opt_config_t *const config = get_opt("inline");
+ timer_stop(config->timer);
+
do_irg_opt(irg, "scalar-replace");
do_irg_opt(irg, "local");
do_irg_opt(irg, "control-flow");
do_irg_opt(irg, "combo");
+
+ timer_start(config->timer);
}
static void do_inline(void)
set_opt_global_cse(0);
}
-typedef enum opt_target {
- OPT_TARGET_IRG, /**< optimization function works on a single graph */
- OPT_TARGET_IRP /**< optimization function works on the complete program */
-} opt_target_t;
-
-typedef enum opt_flags {
- OPT_FLAG_NONE = 0,
- OPT_FLAG_ENABLED = 1 << 0, /**< enable the optimization */
- OPT_FLAG_NO_DUMP = 1 << 1, /**< don't dump after transformation */
- OPT_FLAG_NO_VERIFY = 1 << 2, /**< don't verify after transformation */
- OPT_FLAG_HIDE_OPTIONS = 1 << 3, /**< do not automatically process
- -foptions for this transformation */
- OPT_FLAG_ESSENTIAL = 1 << 4, /**< output won't work without this pass
- so we need it even with -O0 */
-} opt_flags_t;
-
-typedef void (*transform_irg_func)(ir_graph *irg);
-typedef void (*transform_irp_func)(void);
-
-typedef struct {
- opt_target_t target;
- const char *name;
- union {
- transform_irg_func transform_irg;
- transform_irp_func transform_irp;
- } u;
- const char *description;
- opt_flags_t flags;
- ir_timer_t *timer;
-} opt_config_t;
-
static opt_config_t opts[] = {
#define IRG(a, b, c, d) { OPT_TARGET_IRG, a, .u.transform_irg = (transform_irg_func)b, c, d }
#define IRP(a, b, c, d) { OPT_TARGET_IRP, a, .u.transform_irp = b, c, d }
IRG("if-conversion", opt_if_conv, "if-conversion", OPT_FLAG_NONE),
IRG("invert-loops", do_loop_inversion, "loop inversion", OPT_FLAG_NONE),
IRG("ivopts", do_stred, "induction variable strength reduction", OPT_FLAG_NONE),
- IRG("local", optimize_graph_df, "local graph optimizations", OPT_FLAG_HIDE_OPTIONS),
+ IRG("local", local_opts, "local graph optimizations", OPT_FLAG_HIDE_OPTIONS),
IRG("lower", lower_highlevel_graph, "lowering", OPT_FLAG_HIDE_OPTIONS | OPT_FLAG_ESSENTIAL),
IRG("lower-mux", do_lower_mux, "mux lowering", OPT_FLAG_NONE),
IRG("opt-load-store", optimize_load_store, "load store optimization", OPT_FLAG_NONE),
IRG("vrp", set_vrp_data, "value range propagation", OPT_FLAG_NONE),
IRP("inline", do_inline, "inlining", OPT_FLAG_NONE),
IRP("lower-const", lower_const_code, "lowering of constant code", OPT_FLAG_HIDE_OPTIONS | OPT_FLAG_NO_DUMP | OPT_FLAG_NO_VERIFY | OPT_FLAG_ESSENTIAL),
+ IRP("local-const", local_opts_const_code, "local optimisation of constant initializers",
+ OPT_FLAG_HIDE_OPTIONS | OPT_FLAG_NO_DUMP | OPT_FLAG_NO_VERIFY | OPT_FLAG_ESSENTIAL),
IRP("target-lowering", be_lower_for_target, "lowering necessary for target architecture", OPT_FLAG_HIDE_OPTIONS | OPT_FLAG_ESSENTIAL),
IRP("opt-func-call", optimize_funccalls, "function call optimization", OPT_FLAG_NONE),
IRP("opt-proc-clone", do_cloning, "procedure cloning", OPT_FLAG_NONE),
ir_graph *const old_irg = current_ir_graph;
current_ir_graph = irg;
- timer_push(config->timer);
+ timer_start(config->timer);
config->u.transform_irg(irg);
- timer_pop(config->timer);
+ timer_stop(config->timer);
if (firm_dump.all_phases && firm_dump.ir_graph) {
dump_ir_graph(irg, name);
}
- if (firm_opt.check_all) {
+ if (firm_opt.verify) {
timer_push(t_verify);
irg_verify(irg, VERIFY_ENFORCE_SSA);
timer_pop(t_verify);
if (! (config->flags & OPT_FLAG_ENABLED))
return;
- timer_push(config->timer);
+ timer_start(config->timer);
config->u.transform_irp();
- timer_pop(config->timer);
+ timer_stop(config->timer);
if (firm_dump.ir_graph && firm_dump.all_phases) {
int i;
}
}
- if (firm_opt.check_all) {
+ if (firm_opt.verify) {
int i;
timer_push(t_verify);
for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
set_opt_enabled("control-flow", true);
set_opt_enabled("local", true);
set_opt_enabled("lower-const", true);
+ set_opt_enabled("local-const", true);
set_opt_enabled("scalar-replace", true);
set_opt_enabled("place", true);
set_opt_enabled("gcse", true);
if (get_opt_enabled("ivopts"))
set_opt_enabled("remove-phi-cycles", false);
- timer_start(t_all_opt);
-
do_irp_opt("rts");
/* first step: kill dead code */
if (firm_dump.statistic & STAT_AFTER_OPT)
stat_dump_snapshot(input_filename, "opt");
-
- timer_stop(t_all_opt);
}
/**
if (firm_dump.statistic & STAT_AFTER_LOWER)
stat_dump_snapshot(input_filename, "low");
- timer_start(t_all_opt);
-
for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
ir_graph *irg = get_irp_irg(i);
do_irg_opt(irg, "control-flow");
}
- set_irg_state(irg, IR_GRAPH_STATE_NORMALISATION2);
+ add_irg_constraints(irg, IR_GRAPH_CONSTRAINT_NORMALISATION2);
do_irg_opt(irg, "local");
do_irg_opt(irg, "parallelize-mem");
do_irg_opt(irg, "frame");
}
+ do_irp_opt("local-const");
do_irp_opt("remove-unused");
do_irp_opt("opt-cc");
- timer_stop(t_all_opt);
dump_all("low-opt");
if (firm_dump.statistic & STAT_FINAL) {
*/
void gen_firm_init(void)
{
- unsigned pattern = 0;
+ ir_init();
+ enable_safe_defaults();
FOR_EACH_OPT(i) {
i->timer = ir_timer_new();
timer_register(t_vcg_dump, "Firm: vcg dumping");
t_all_opt = ir_timer_new();
timer_register(t_all_opt, "Firm: all optimizations");
+ t_backend = ir_timer_new();
+ timer_register(t_backend, "Firm: backend");
+}
+
+static void init_statistics(void)
+{
+ unsigned pattern = 0;
if (firm_dump.stat_pattern)
pattern |= FIRMSTAT_PATTERN_ENABLED;
if (firm_dump.stat_dag)
pattern |= FIRMSTAT_COUNT_DAG;
- ir_init(NULL);
firm_init_stat(firm_dump.statistic == STAT_NONE ?
0 : FIRMSTAT_ENABLED | FIRMSTAT_COUNT_STRONG_OP
| FIRMSTAT_COUNT_CONSTS | pattern);
-
- edges_init_dbg(firm_opt.verify_edges);
-
- /* Sel node cannot produce NULL pointers */
- set_opt_sel_based_null_check_elim(1);
-
- /* dynamic dispatch works currently only if whole world scenarios */
- set_opt_dyn_meth_dispatch(0);
-
- /* do not run architecture dependent optimizations in building phase */
- arch_dep_set_opts(arch_dep_none);
-
- do_node_verification((firm_verification_t) firm_opt.verify);
- if (firm_dump.extbb)
- ir_add_dump_flags(ir_dump_flag_group_extbb);
- if (firm_dump.no_blocks)
- ir_remove_dump_flags(ir_dump_flag_blocks_as_subgraphs);
-
- set_optimize(1);
- set_opt_constant_folding(firm_opt.const_folding);
- set_opt_algebraic_simplification(firm_opt.const_folding);
- set_opt_cse(firm_opt.cse);
- set_opt_global_cse(0);
- set_opt_unreachable_code(1);
}
/**
*
* @param out a file handle for the output, may be NULL
* @param input_filename the name of the (main) source file
- * @param c_mode non-zero if "C" was compiled
*/
-void gen_firm_finish(FILE *out, const char *input_filename)
+void generate_code(FILE *out, const char *input_filename)
{
int i;
+ /* initialize implicit opts, just to be sure because really the frontend
+ * should have called it already before starting graph construction */
+ init_implicit_optimizations();
+ init_statistics();
+
+ do_node_verification((firm_verification_t) firm_opt.verify);
+
/* the general for dumping option must be set, or the others will not work*/
- firm_dump.ir_graph
- = (bool) (firm_dump.ir_graph | firm_dump.all_phases | firm_dump.extbb);
+ firm_dump.ir_graph = (bool) (firm_dump.ir_graph | firm_dump.all_phases);
ir_add_dump_flags(ir_dump_flag_keepalive_edges
| ir_dump_flag_consts_local | ir_dump_flag_dominance);
/* FIXME: cloning might ADD new graphs. */
irg_dump_no = calloc(get_irp_last_idx(), sizeof(*irg_dump_no));
+ ir_timer_init_parent(t_verify);
+ ir_timer_init_parent(t_vcg_dump);
+ timer_start(t_all_opt);
+
if (firm_dump.all_types) {
dump_ir_prog_ext(dump_typegraph, "types.vcg");
}
- /* finalize all graphs */
- for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
- ir_graph *irg = get_irp_irg(i);
- irg_finalize_cons(irg);
- }
dump_all("");
- timer_push(t_verify);
- tr_verify();
- timer_pop(t_verify);
-
- /* all graphs are finalized, set the irp phase to high */
- set_irp_phase_state(phase_high);
+ if (firm_opt.verify) {
+ timer_push(t_verify);
+ tr_verify();
+ timer_pop(t_verify);
+ }
/* BEWARE: kill unreachable code before doing compound lowering */
for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
do_firm_optimizations(input_filename);
do_firm_lowering(input_filename);
- /* set the phase to low */
- for (i = get_irp_n_irgs() - 1; i >= 0; --i)
- set_irg_phase_state(get_irp_irg(i), phase_low);
+ timer_stop(t_all_opt);
if (firm_dump.statistic & STAT_FINAL_IR)
stat_dump_snapshot(input_filename, "final-ir");
/* run the code generator */
- ir_timer_t *timer = ir_timer_new();
- timer_register(timer, "Firm: backend");
- timer_start(timer);
+ timer_start(t_backend);
be_main(out, input_filename);
- timer_stop(timer);
+ timer_stop(t_backend);
if (firm_dump.statistic & STAT_FINAL)
stat_dump_snapshot(input_filename, "final");
}
+void gen_firm_finish(void)
+{
+ ir_finish();
+}
+
static void disable_all_opts(void)
{
firm_opt.cse = false;
firm_opt.alias_analysis = false;
firm_opt.strict_alias = false;
firm_opt.no_alias = false;
+ firm_opt.const_folding = false;
FOR_EACH_OPT(config) {
if (config->flags & OPT_FLAG_ESSENTIAL) {
void firm_option_help(print_option_help_func print_option_help)
{
- print_option_help(firm_options[0].option, firm_options[0].description);
-
FOR_EACH_OPT(config) {
char buf[1024];
char buf2[1024];
}
}
-/**
- * Do very early initializations
- */
-void firm_early_init(void)
+void init_implicit_optimizations(void)
{
- /* arg: need this here for command line options */
- be_opt_register();
-
- enable_safe_defaults();
+ set_optimize(1);
+ set_opt_constant_folding(firm_opt.const_folding);
+ set_opt_algebraic_simplification(firm_opt.const_folding);
+ set_opt_cse(firm_opt.cse);
+ set_opt_global_cse(0);
}
projects / cparser / blobdiff