/**
- *
- * @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>
#include <libfirm/firm.h>
#include "firm_opt.h"
-#include "firm_codegen.h"
-#include "firm_cmdline.h"
#include "firm_timing.h"
#include "ast2firm.h"
+#include "adt/strutil.h"
+#include "adt/util.h"
+
+/* optimization settings */
+struct a_firm_opt {
+ bool const_folding; /**< enable constant folding */
+ bool cse; /**< enable common-subexpression elimination */
+ bool confirm; /**< enable Confirm optimization */
+ bool muls; /**< enable architecture dependent mul optimization */
+ bool divs; /**< enable architecture dependent div optimization */
+ bool mods; /**< enable architecture dependent mod optimization */
+ bool alias_analysis; /**< enable Alias Analysis */
+ bool strict_alias; /**< enable strict Alias Analysis (using type based AA) */
+ bool no_alias; /**< no aliasing possible. */
+ bool verify; /**< Firm verifier setting */
+ bool check_all; /**< enable checking all Firm phases */
+ int clone_threshold; /**< The threshold value for procedure cloning. */
+ unsigned inline_maxsize; /**< Maximum function size for inlining. */
+ unsigned inline_threshold;/**< Inlining benefice threshold. */
+};
+
+/** statistic options */
+typedef enum a_firmstat_selection_tag {
+ STAT_NONE = 0x00000000,
+ STAT_BEFORE_OPT = 0x00000001,
+ STAT_AFTER_OPT = 0x00000002,
+ STAT_AFTER_LOWER = 0x00000004,
+ STAT_FINAL_IR = 0x00000008,
+ STAT_FINAL = 0x00000010,
+} a_firmstat_selection;
+
+/* dumping options */
+struct a_firm_dump {
+ bool debug_print; /**< enable debug print */
+ bool all_types; /**< dump the All_types graph */
+ bool ir_graph; /**< dump all graphs */
+ bool all_phases; /**< dump the IR graph after all phases */
+ bool statistic; /**< Firm statistic setting */
+ bool stat_pattern; /**< enable Firm statistic pattern */
+ bool stat_dag; /**< enable Firm DAG statistic */
+};
+
+struct a_firm_be_opt {
+ bool selection;
+ bool node_stat;
+};
+
+/* optimization settings */
+static struct a_firm_opt firm_opt = {
+ .const_folding = true,
+ .cse = true,
+ .confirm = true,
+ .muls = true,
+ .divs = true,
+ .mods = true,
+ .alias_analysis = true,
+ .strict_alias = false,
+ .no_alias = false,
+ .verify = FIRM_VERIFICATION_ON,
+ .check_all = true,
+ .clone_threshold = DEFAULT_CLONE_THRESHOLD,
+ .inline_maxsize = 750,
+ .inline_threshold = 0,
+};
+
+/* dumping options */
+static struct a_firm_dump firm_dump = {
+ .debug_print = false,
+ .all_types = false,
+ .ir_graph = false,
+ .all_phases = false,
+ .statistic = STAT_NONE,
+ .stat_pattern = 0,
+ .stat_dag = 0,
+};
+
+#define X(a) a, sizeof(a)-1
+
+/** Parameter description structure */
+static const struct params {
+ const char *option; /**< name of the option */
+ size_t opt_len; /**< length of the option string */
+ bool *flag; /**< address of variable to set/reset */
+ bool set; /**< iff true, variable will be set, else reset */
+ const char *description; /**< description of this option */
+} firm_options[] = {
+ /* firm optimization options */
+ { X("no-opt"), NULL, 0, "disable all FIRM optimizations" },
+ { X("cse"), &firm_opt.cse, 1, "enable common subexpression elimination" },
+ { X("no-cse"), &firm_opt.cse, 0, "disable common subexpression elimination" },
+ { X("const-fold"), &firm_opt.const_folding, 1, "enable constant folding" },
+ { X("no-const-fold"), &firm_opt.const_folding, 0, "disable constant folding" },
+ { X("inline-max-size=<size>"), NULL, 0, "set maximum size for function inlining" },
+ { X("inline-threshold=<size>"),NULL, 0, "set benefice threshold for function inlining" },
+ { X("confirm"), &firm_opt.confirm, 1, "enable Confirm optimization" },
+ { X("no-confirm"), &firm_opt.confirm, 0, "disable Confirm optimization" },
+ { X("opt-mul"), &firm_opt.muls, 0, "enable multiplication optimization" },
+ { X("no-opt-mul"), &firm_opt.muls, 0, "disable multiplication optimization" },
+ { X("opt-div"), &firm_opt.divs, 0, "enable division optimization" },
+ { X("no-opt-div"), &firm_opt.divs, 0, "disable division optimization" },
+ { X("opt-mod"), &firm_opt.mods, 0, "enable remainder optimization" },
+ { X("no-opt-mod"), &firm_opt.mods, 0, "disable remainder optimization" },
+ { X("opt-alias"), &firm_opt.alias_analysis, 1, "enable alias analysis" },
+ { X("no-opt-alias"), &firm_opt.alias_analysis, 0, "disable alias analysis" },
+ { X("alias"), &firm_opt.no_alias, 0, "aliasing occurs" },
+ { X("no-alias"), &firm_opt.no_alias, 1, "no aliasing occurs" },
+ { X("strict-aliasing"), &firm_opt.strict_alias, 1, "strict alias rules" },
+ { X("no-strict-aliasing"), &firm_opt.strict_alias, 0, "strict alias rules" },
+ { X("clone-threshold=<value>"),NULL, 0, "set clone threshold to <value>" },
+
+ /* other firm regarding options */
+ { 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" },
+
+ /* 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-all-phases"), &firm_dump.all_phases, 1, "dump graphs for all optimization phases" },
+ { X("dump-filter=<string>"), NULL, 0, "set dumper filter" },
+
+ /* misc */
+ { X("stat-before-opt"), &firm_dump.statistic, STAT_BEFORE_OPT, "Firm statistic output before optimizations" },
+ { X("stat-after-opt"), &firm_dump.statistic, STAT_AFTER_OPT, "Firm statistic output after optimizations" },
+ { X("stat-after-lower"), &firm_dump.statistic, STAT_AFTER_LOWER, "Firm statistic output after lowering" },
+ { X("stat-final-ir"), &firm_dump.statistic, STAT_FINAL_IR, "Firm statistic after final optimization" },
+ { X("stat-final"), &firm_dump.statistic, STAT_FINAL, "Firm statistic after code generation" },
+ { X("stat-pattern"), &firm_dump.stat_pattern, 1, "Firm statistic calculates most used pattern" },
+ { X("stat-dag"), &firm_dump.stat_dag, 1, "Firm calculates DAG statistics" },
+};
+
+#undef X
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 */
{ &rts_entities[rts_memset], i_mapper_memset },
{ &rts_entities[rts_memcmp], i_mapper_memcmp }
};
- i_record rec[sizeof(mapper)/sizeof(mapper[0])];
- unsigned i, n_map;
+ i_record rec[lengthof(mapper)];
+ size_t n_map = 0;
- for (i = n_map = 0; i < sizeof(mapper)/sizeof(mapper[0]); ++i) {
+ for (size_t i = 0; i != lengthof(mapper); ++i) {
if (*mapper[i].ent != NULL) {
rec[n_map].i_call.kind = INTRINSIC_CALL;
rec[n_map].i_call.i_ent = *mapper[i].ent;
static int *irg_dump_no;
-static void do_lower_highlevel(ir_graph *irg)
-{
- lower_highlevel_graph(irg, false);
-}
-
static void do_stred(ir_graph *irg)
{
opt_osr(irg, osr_flag_default | osr_flag_keep_reg_pressure | osr_flag_ignore_x86_shift);
} u;
const char *description;
opt_flags_t flags;
+ ir_timer_t *timer;
} opt_config_t;
static opt_config_t opts[] = {
#define IRP(a, b, c, d) { OPT_TARGET_IRP, a, .u.transform_irp = b, c, d }
IRG("bool", opt_bool, "bool simplification", OPT_FLAG_NONE),
IRG("combo", combo, "combined CCE, UCE and GVN", OPT_FLAG_NONE),
- IRG("confirm", construct_confirms, "confirm optimisation", OPT_FLAG_HIDE_OPTIONS),
+ IRG("confirm", construct_confirms, "confirm optimization", OPT_FLAG_HIDE_OPTIONS),
IRG("control-flow", optimize_cf, "optimization of control-flow", OPT_FLAG_HIDE_OPTIONS),
IRG("dead", dead_node_elimination, "dead node elimination", OPT_FLAG_HIDE_OPTIONS | OPT_FLAG_NO_DUMP | OPT_FLAG_NO_VERIFY),
IRG("deconv", conv_opt, "conv node elimination", OPT_FLAG_NONE),
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("lower", do_lower_highlevel, "lowering", OPT_FLAG_HIDE_OPTIONS | OPT_FLAG_ESSENTIAL),
+ 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("opt-tail-rec", opt_tail_rec_irg, "tail-recursion eliminiation", OPT_FLAG_NONE),
IRP("opt-func-call", optimize_funccalls, "function call optimization", OPT_FLAG_NONE),
IRP("opt-proc-clone", do_cloning, "procedure cloning", OPT_FLAG_NONE),
IRP("remove-unused", garbage_collect_entities, "removal of unused functions/variables", OPT_FLAG_NO_DUMP | OPT_FLAG_NO_VERIFY),
- IRP("rts", rts_map, "optimization of known library functions", OPT_FLAG_HIDE_OPTIONS),
+ IRP("rts", rts_map, "optimization of known library functions", OPT_FLAG_NONE),
IRP("opt-cc", mark_private_methods, "calling conventions optimization", OPT_FLAG_NONE),
#undef IRP
#undef IRG
};
-static const int n_opts = sizeof(opts) / sizeof(opts[0]);
-ir_timer_t *timers[sizeof(opts)/sizeof(opts[0])];
+
+#define FOR_EACH_OPT(i) for (opt_config_t *i = opts; i != endof(opts); ++i)
static opt_config_t *get_opt(const char *name)
{
- int i;
- for (i = 0; i < n_opts; ++i) {
- opt_config_t *config = &opts[i];
- if (strcmp(config->name, name) == 0)
+ FOR_EACH_OPT(config) {
+ if (streq(config->name, name))
return config;
}
}
/**
- * perform an optimisation on a single graph
+ * perform an optimization on a single graph
*
* @return true if something changed, false otherwise
*/
static bool do_irg_opt(ir_graph *irg, const char *name)
{
- ir_graph *old_irg;
- opt_config_t *config = get_opt(name);
- size_t n = config - opts;
+ opt_config_t *const config = get_opt(name);
assert(config != NULL);
assert(config->target == OPT_TARGET_IRG);
if (! (config->flags & OPT_FLAG_ENABLED))
return false;
- old_irg = current_ir_graph;
+ ir_graph *const old_irg = current_ir_graph;
current_ir_graph = irg;
- timer_push(timers[n]);
+ timer_push(config->timer);
config->u.transform_irg(irg);
- timer_pop(timers[n]);
+ timer_pop(config->timer);
if (firm_dump.all_phases && firm_dump.ir_graph) {
dump_ir_graph(irg, name);
static void do_irp_opt(const char *name)
{
- opt_config_t *config = get_opt(name);
- size_t n = config - opts;
+ opt_config_t *const config = get_opt(name);
assert(config->target == OPT_TARGET_IRP);
if (! (config->flags & OPT_FLAG_ENABLED))
return;
- timer_push(timers[n]);
+ timer_push(config->timer);
config->u.transform_irp();
- timer_pop(timers[n]);
+ timer_pop(config->timer);
if (firm_dump.ir_graph && firm_dump.all_phases) {
int i;
do_irg_opt(irg, "ivopts");
do_irg_opt(irg, "local");
do_irg_opt(irg, "dead");
- do_irg_opt(irg, "frame");
}
do_irp_opt("inline");
ir_graph *irg = get_irp_irg(i);
do_irg_opt(irg, "local");
- do_irg_opt(irg, "gcse");
- do_irg_opt(irg, "place");
+ do_irg_opt(irg, "deconv");
do_irg_opt(irg, "control-flow");
do_irg_opt(irg, "opt-load-store");
- do_irg_opt(irg, "local");
+ do_irg_opt(irg, "gcse");
+ do_irg_opt(irg, "place");
do_irg_opt(irg, "control-flow");
if (do_irg_opt(irg, "vrp")) {
do_irg_opt(irg, "control-flow");
}
+ set_irg_state(irg, IR_GRAPH_STATE_NORMALISATION2);
+ do_irg_opt(irg, "local");
+
do_irg_opt(irg, "parallelize-mem");
+ do_irg_opt(irg, "frame");
}
do_irp_opt("remove-unused");
do_irp_opt("opt-cc");
*/
void gen_firm_init(void)
{
- unsigned pattern = 0;
- int i;
+ ir_init();
+ enable_safe_defaults();
- for (i = 0; i < n_opts; ++i) {
- timers[i] = ir_timer_new();
- timer_register(timers[i], opts[i].description);
+ FOR_EACH_OPT(i) {
+ i->timer = ir_timer_new();
+ timer_register(i->timer, i->description);
}
t_verify = ir_timer_new();
timer_register(t_verify, "Firm: verify pass");
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.filter != NULL)
- ir_set_dump_filter(firm_dump.filter);
- 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;
+ 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);
+
+ 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);
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);
do_irg_opt(irg, "control-flow");
}
- /* lower copyb nodes */
- for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
- ir_graph *irg = get_irp_irg(i);
- lower_CopyB(irg, 128, 4);
- }
-
if (firm_dump.statistic & STAT_BEFORE_OPT) {
stat_dump_snapshot(input_filename, "noopt");
}
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 disable_all_opts(void)
+void gen_firm_finish(void)
{
- for (int i = 0; i < n_opts; ++i) {
- opt_config_t *config = &opts[i];
+ ir_finish();
+}
+
+static void disable_all_opts(void)
+{
+ firm_opt.cse = false;
+ firm_opt.confirm = false;
+ firm_opt.muls = false;
+ firm_opt.divs = false;
+ firm_opt.mods = false;
+ firm_opt.alias_analysis = false;
+ firm_opt.strict_alias = false;
+ firm_opt.no_alias = false;
+
+ FOR_EACH_OPT(config) {
if (config->flags & OPT_FLAG_ESSENTIAL) {
config->flags |= OPT_FLAG_ENABLED;
} else {
}
}
-int firm_opt_option(const char *opt)
+static bool firm_opt_option(const char *opt)
{
- bool enable = true;
- if (strncmp(opt, "no-", 3) == 0) {
- enable = false;
- opt = opt + 3;
- }
+ char const* const rest = strstart(opt, "no-");
+ bool const enable = rest ? opt = rest, false : true;
opt_config_t *config = get_opt(opt);
if (config == NULL || (config->flags & OPT_FLAG_HIDE_OPTIONS))
- return 0;
+ return false;
config->flags &= ~OPT_FLAG_ENABLED;
config->flags |= enable ? OPT_FLAG_ENABLED : 0;
- return 1;
+ return true;
}
-void firm_opt_option_help(void)
+void firm_option_help(print_option_help_func print_option_help)
{
- int i;
-
- for (i = 0; i < n_opts; ++i) {
+ FOR_EACH_OPT(config) {
char buf[1024];
char buf2[1024];
- const opt_config_t *config = &opts[i];
if (config->flags & OPT_FLAG_HIDE_OPTIONS)
continue;
- snprintf(buf2, sizeof(buf2), "firm: enable %s", config->description);
- print_option_help(config->name, buf2);
- snprintf(buf, sizeof(buf), "no-%s", config->name);
- snprintf(buf2, sizeof(buf2), "firm: disable %s", config->description);
+ snprintf(buf, sizeof(buf), "-f%s", config->name);
+ snprintf(buf2, sizeof(buf2), "enable %s", config->description);
+ print_option_help(buf, buf2);
+ snprintf(buf, sizeof(buf), "-fno-%s", config->name);
+ snprintf(buf2, sizeof(buf2), "disable %s", config->description);
+ print_option_help(buf, buf2);
+ }
+
+ for (size_t k = 0; k != lengthof(firm_options); ++k) {
+ char buf[1024];
+ char buf2[1024];
+ snprintf(buf, sizeof(buf), "-f%s", firm_options[k].option);
+ snprintf(buf2, sizeof(buf2), "%s", firm_options[k].description);
print_option_help(buf, buf2);
}
}
+int firm_option(const char *const opt)
+{
+ char const* val;
+ if ((val = strstart(opt, "dump-filter="))) {
+ ir_set_dump_filter(val);
+ return 1;
+ } else if ((val = strstart(opt, "clone-threshold="))) {
+ sscanf(val, "%d", &firm_opt.clone_threshold);
+ return 1;
+ } else if ((val = strstart(opt, "inline-max-size="))) {
+ sscanf(val, "%u", &firm_opt.inline_maxsize);
+ return 1;
+ } else if ((val = strstart(opt, "inline-threshold="))) {
+ sscanf(val, "%u", &firm_opt.inline_threshold);
+ return 1;
+ } else if (streq(opt, "no-opt")) {
+ disable_all_opts();
+ return 1;
+ }
+
+ size_t const len = strlen(opt);
+ for (size_t i = lengthof(firm_options); i != 0;) {
+ struct params const* const o = &firm_options[--i];
+ if (len == o->opt_len && memcmp(opt, o->option, len) == 0) {
+ /* statistic options do accumulate */
+ if (o->flag == &firm_dump.statistic)
+ *o->flag = (bool) (*o->flag | o->set);
+ else
+ *o->flag = o->set;
+
+ return 1;
+ }
+ }
+
+ /* maybe this enables/disables optimizations */
+ if (firm_opt_option(opt))
+ return 1;
+
+ return 0;
+}
+
static void set_be_option(const char *arg)
{
int res = be_parse_arg(arg);
void choose_optimization_pack(int level)
{
- /* apply optimisation level */
+ /* apply optimization level */
switch(level) {
case 0:
set_option("no-opt");
break;
}
}
-
-/**
- * Do very early initializations
- */
-void firm_early_init(void)
-{
- /* arg: need this here for command line options */
- be_opt_register();
-
- enable_safe_defaults();
-}
projects / cparser / blobdiff