#include "ircons_t.h"
#include "irphase_t.h"
#include "irgwalk.h"
+#include "irdump.h"
#include "irtools.h"
#include "irbitset.h"
#include "irprintf.h"
#include "height.h"
#include "beabi.h"
+#include "bemodule.h"
#include "benode_t.h"
#include "besched_t.h"
+#ifdef WITH_LIBCORE
+#include <libcore/lc_opts.h>
+#include <libcore/lc_opts_enum.h>
+#endif /* WITH_LIBCORE */
+
+
#define ARR_LEN_SAFE(arr) ((arr) != NULL ? ARR_LEN((arr)) : 0)
#define HASH_RSS_EDGE(edge) ((get_irn_node_nr((edge)->src) << 16) | (get_irn_node_nr((edge)->tgt) & 0xFFFF))
#define BLOCK_IDX_MAP(rss, irn) bsearch_for_index(get_irn_idx((irn)), (rss)->idx_map, ARR_LEN_SAFE((rss)->idx_map), 1)
+/* the rss options */
+typedef struct _rss_opts_t {
+ int dump_flags;
+} rss_opts_t;
+
/* Represents a child with associated costs */
typedef struct _child {
ir_node *irn;
ir_node **consumer; /**< Sorted consumer array (needed for faster access) */
plist_t *parent_list; /**< List of parents */
- ir_node **parents; /**< Sorted parent array (needed for faster access) */
+ plist_t *pkiller_list; /**< List of potential killers */
plist_t *descendant_list; /**< List of descendants */
ir_node **descendants; /**< Sorted descendant array (needed for faster access) */
- plist_t *pkiller_list; /**< List of potential killers */
- ir_node **pkillers; /**< Sorted pkiller array (needed for faster access) */
-
-#if 0
- plist_t *dvg_desc_list; /**< List of all descendants in the DVG */
- ir_node **dvg_desc; /**< Sorted dvg descendant array (needed for faster access) */
-
- plist_t *dvg_pkiller_list; /**< List of potential killers in the DVG */
- ir_node **dvg_pkiller; /**< Sorted dvg pkiller array (needed for faster access) */
-
- plist_t *dvg_user_list; /**< List of users in the disjoint value DAG DVG */
-#endif
- plist_t *kill_value_list; /**< List of values getting potentially killed by this node */
-
ir_node *killer; /**< The selected unique killer */
ir_node *irn; /**< The corresponding firm node to this rss_irn */
chain_t *chain; /**< The chain, this node is associated to */
+ unsigned desc_walk; /**< visited flag for collecting descendants */
+ unsigned kill_count; /**< number of nodes killed by this one */
+
unsigned live_out : 1; /**< irn has consumers outside of it's block */
unsigned visited : 1; /**< visited flag for bipartite decomposition */
+ unsigned havecons : 1; /**< visited flag collect consumer */
unsigned handled : 1; /**< flag indicating whether or not the list structures have been build */
unsigned dumped : 1; /**< flag indication whether or not this node was dumped */
} rss_irn_t;
rss_edge_t *edge; /* the edge selected for the serialization */
int omega1; /* estimated: available regs - RS reduction */
int omega2; /* increase in critical path length */
+ int new_killer;
} serialization_t;
typedef struct _rss {
ir_node *block; /**< The current block in progress. */
int *idx_map; /**< Mapping irn indices to per block indices */
unsigned max_height; /**< maximum height in the current block */
+ rss_opts_t *opts; /**< The options */
+ be_lv_t *liveness; /**< The liveness information for this irg */
+ pset *live_block; /**< Values alive at end of block */
const arch_register_class_t *cls; /**< The current register class */
DEBUG_ONLY(firm_dbg_module_t *dbg);
} rss_t;
* a source and a sink for all live-in and live-out values of a block
*/
-static enum {
+enum {
iro_rss_Source,
iro_rss_Sink,
iro_rss_last
#define is_Source(irn) ((irn) == _source)
#define is_Sink(irn) ((irn) == _sink)
+enum {
+ RSS_DUMP_NONE = 0,
+ RSS_DUMP_CBC = 1 << 0,
+ RSS_DUMP_PKG = 1 << 1,
+ RSS_DUMP_KILL = 1 << 2,
+ RSS_DUMP_DVG = 1 << 3,
+ RSS_DUMP_MAXAC = 1 << 4,
+ RSS_DUMP_ALL = (RSS_DUMP_MAXAC << 1) - 1,
+};
+
+static rss_opts_t rss_options = {
+ RSS_DUMP_NONE,
+};
+
+#ifdef WITH_LIBCORE
+static const lc_opt_enum_int_items_t dump_items[] = {
+ { "none", RSS_DUMP_NONE },
+ { "cbc", RSS_DUMP_CBC },
+ { "pkg", RSS_DUMP_PKG },
+ { "kill", RSS_DUMP_KILL },
+ { "dvg", RSS_DUMP_DVG },
+ { "maxac", RSS_DUMP_MAXAC },
+ { "all", RSS_DUMP_ALL },
+ { NULL, 0 }
+};
+
+static lc_opt_enum_int_var_t dump_var = {
+ &rss_options.dump_flags, dump_items
+};
+
+static const lc_opt_table_entry_t rss_option_table[] = {
+ LC_OPT_ENT_ENUM_MASK("dump", "dump phases", &dump_var),
+ { NULL }
+};
+#endif /* WITH_LIBCORE */
+
/******************************************************************************
* _ _ __ _ _
* | | | | / _| | | (_)
*
*****************************************************/
+#ifdef DEBUG_libfirm
static void dump_nodeset(nodeset *ns, const char *prefix) {
ir_node *irn;
foreach_nodeset(ns, irn) {
- ir_printf("%s%+F\n", prefix, irn);
+ ir_fprintf(stderr, "%s%+F\n", prefix, irn);
}
}
+#endif
static void build_file_name(rss_t *rss, const char *suffix, size_t suf_len, char *buf, size_t len) {
const char *irg_name;
memset(buf, 0, len);
irg_name = get_entity_name(get_irg_entity(rss->irg));
- snprintf(buf, len - suf_len, "%s-%s-block-%d",
+ snprintf(buf, len - suf_len, "%s-%s-block-%ld",
irg_name, arch_register_class_name(rss->cls), get_irn_node_nr(rss->block));
strcat(buf, suffix);
}
fprintf(f, "layoutalgorithm: mindepth\n");
fprintf(f, "manhattan_edges: yes\n\n");
- /* first: reset dumped flag of all nodes */
- foreach_plist(rss->nodes, el) {
- ir_node *irn = plist_element_get_value(el);
- rss_irn_t *rirn = get_rss_irn(rss, irn);
- rirn->dumped = 0;
+ {
+ /* reset dump_flag */
+ ir_node *irn;
+ foreach_phase_irn(&rss->ph, irn) {
+ rss_irn_t *node = get_rss_irn(rss, irn);
+ node->dumped = 0;
+ }
}
/* dump all nodes and their killers */
snprintf(suffix, 32, "%s", suffix1);
}
else {
- snprintf(suffix, 32, "-%0.2d%s", iteration, suffix2);
+ snprintf(suffix, 32, "-%02d%s", iteration, suffix2);
}
build_file_name(rss, suffix, strlen(suffix) + 1, file_name, sizeof(file_name));
fprintf(f, "layoutalgorithm: mindepth\n");
fprintf(f, "manhattan_edges: yes\n\n");
+ {
+ /* reset dump_flag */
+ ir_node *irn;
+ foreach_phase_irn(&rss->ph, irn) {
+ rss_irn_t *node = get_rss_irn(rss, irn);
+ node->dumped = 0;
+ }
+ }
+
foreach_plist(rss->nodes, el) {
ir_node *irn = plist_element_get_value(el);
rss_irn_t *rirn = get_rss_irn(rss, irn);
if (max_ac && nodeset_find(max_ac, irn))
c1 = "color:yellow";
- ir_fprintf(f, "node: { title: \"n%d\" label: \"%+F\" %s }\n", get_irn_node_nr(irn), irn, c1);
- rirn->dumped = 1;
+ if (! rirn->dumped) {
+ if (rirn->chain)
+ ir_fprintf(f, "node: { title: \"n%d\" label: \"%+F c%d\" %s }\n", get_irn_node_nr(irn), irn, rirn->chain->nr, c1);
+ else
+ ir_fprintf(f, "node: { title: \"n%d\" label: \"%+F\" %s }\n", get_irn_node_nr(irn), irn, c1);
+ rirn->dumped = 1;
+ }
foreach_plist(rirn->pkiller_list, k_el) {
ir_node *pkiller = plist_element_get_value(k_el);
c2 = "color:yellow";
if (! pk_rirn->dumped) {
- ir_fprintf(f, "node: { title: \"n%d\" label: \"%+F\" %s }\n", get_irn_node_nr(pkiller), pkiller, c2);
+ if (pk_rirn->chain)
+ ir_fprintf(f, "node: { title: \"n%d\" label: \"%+F c%d\" %s }\n", get_irn_node_nr(pkiller), pkiller, pk_rirn->chain->nr, c2);
+ else
+ ir_fprintf(f, "node: { title: \"n%d\" label: \"%+F\" %s }\n", get_irn_node_nr(pkiller), pkiller, c2);
pk_rirn->dumped = 1;
}
ir_fprintf(f, "edge: { sourcename: \"n%d\" targetname: \"n%d\" }\n",
/* dump all edges */
foreach_pset(dvg->edges, edge) {
- rss_irn_t *src = get_rss_irn(rss, edge->src);
- rss_irn_t *tgt = get_rss_irn(rss, edge->tgt);
-
ir_fprintf(f, "edge: { sourcename: \"n%d\" targetname: \"n%d\" }\n",
get_irn_node_nr(edge->src), get_irn_node_nr(edge->tgt));
}
static void *init_rss_irn(phase_t *ph, ir_node *irn, void *old) {
rss_irn_t *res = old ? old : phase_alloc(ph, sizeof(res[0]));
- res->descendant_list = plist_obstack_new(phase_obst(ph));
- res->descendants = NULL;
-
- res->consumer_list = plist_obstack_new(phase_obst(ph));
- res->consumer = NULL;
+ res->descendant_list = plist_obstack_new(phase_obst(ph));
+ res->descendants = NULL;
- res->pkiller_list = plist_obstack_new(phase_obst(ph));
- res->pkillers = NULL;
+ res->consumer_list = plist_obstack_new(phase_obst(ph));
+ res->consumer = NULL;
- res->parent_list = plist_obstack_new(phase_obst(ph));
- res->parents = NULL;
+ res->pkiller_list = plist_obstack_new(phase_obst(ph));
- //res->dvg_desc_list = plist_obstack_new(phase_obst(ph));
- //res->dvg_desc = NULL;
+ res->parent_list = plist_obstack_new(phase_obst(ph));
- res->kill_value_list = plist_obstack_new(phase_obst(ph));
- //res->dvg_user_list = plist_obstack_new(phase_obst(ph));
- //res->dvg_pkiller_list = plist_obstack_new(phase_obst(ph));
+ res->killer = NULL;
+ res->irn = irn;
+ res->chain = NULL;
- res->killer = NULL;
- res->irn = irn;
- res->chain = NULL;
-
- res->live_out = 0;
- res->visited = 0;
- res->handled = 0;
- res->dumped = 0;
+ res->kill_count = 0;
+ res->desc_walk = 0;
+ res->live_out = 0;
+ res->visited = 0;
+ res->handled = 0;
+ res->dumped = 0;
+ res->havecons = 0;
return res;
}
/**
* Collect all nodes data dependent on current node.
*/
-static void collect_descendants(rss_t *rss, rss_irn_t *rirn, ir_node *irn, int *got_sink) {
+static void collect_descendants(rss_t *rss, rss_irn_t *rirn, ir_node *irn, int *got_sink, unsigned cur_desc_walk) {
const ir_edge_t *edge;
- ir_node *block = rss->block;
- ir_edge_kind_t ekind[2] = { EDGE_KIND_NORMAL, EDGE_KIND_DEP };
- int i;
+ rss_irn_t *cur_node = get_rss_irn(rss, irn);
+ ir_node *block = rss->block;
+ ir_edge_kind_t ekind[2] = { EDGE_KIND_NORMAL, EDGE_KIND_DEP };
+ int i;
+
+ if (cur_node->desc_walk >= cur_desc_walk)
+ return;
+ cur_node->desc_walk = cur_desc_walk;
+
+ /* Stop at Barriers */
+ if (be_is_Barrier(irn))
+ return;
/* loop over normal and dependency edges */
for (i = 0; i < 2; ++i) {
if (arch_irn_is(rss->arch_env, user, ignore))
continue;
- /* check if user lives in block and is not a control flow node */
- if (get_nodes_block(user) == block && get_irn_mode(user) != mode_X) {
- /* skip mode_T nodes */
- if (get_irn_mode(user) != mode_T && ! plist_has_value(rirn->descendant_list, user)) {
- plist_insert_back(rirn->descendant_list, user);
- DBG((rss->dbg, LEVEL_2, "\t\tdescendant %+F\n", user));
- }
- collect_descendants(rss, rirn, user, got_sink);
+ /*
+ (a) mode_X means Jump -> out_edge
+ (b) Phi as user of a normal node -> out-edge
+ */
+ if (get_irn_mode(user) == mode_X || is_Phi(user)) {
+ if (! *got_sink)
+ goto force_sink;
+ else
+ continue;
}
- else if (! *got_sink) {
- /* user lives out of block: add sink as descendant if not already done */
- plist_insert_back(rirn->descendant_list, _sink);
- *got_sink = 1;
- DBG((rss->dbg, LEVEL_2, "\t\tdescendant %+F\n", _sink));
+
+ if (is_Proj(user)) {
+
+ //if (arch_get_irn_reg_class(rss->arch_env, user, -1) == rss->cls)
+ collect_descendants(rss, rirn, user, got_sink, cur_desc_walk);
+ }
+ else {
+ /* check if user lives in block and is not a control flow node */
+ if (get_nodes_block(user) == block) {
+ if (! plist_has_value(rirn->descendant_list, user)) {
+ plist_insert_back(rirn->descendant_list, user);
+ DBG((rss->dbg, LEVEL_2, "\t\tdescendant %+F\n", user));
+ }
+ collect_descendants(rss, rirn, user, got_sink, cur_desc_walk);
+ }
+ else if (! *got_sink) {
+force_sink:
+ /* user lives out of block: add sink as descendant if not already done */
+ plist_insert_back(rirn->descendant_list, _sink);
+ *got_sink = 1;
+ DBG((rss->dbg, LEVEL_2, "\t\tdescendant %+F\n", _sink));
+ }
}
}
}
/**
* Handles a single consumer.
*/
-static int collect_single_consumer(rss_t *rss, rss_irn_t *rss_irn, ir_node *consumer, int got_sink) {
- ir_node *block = rss->block;
- ir_edge_kind_t ekind[2] = { EDGE_KIND_NORMAL, EDGE_KIND_DEP };
- int i;
-
- if (get_nodes_block(consumer) == block) {
- /* the consumer of a mode_T node are it's projs */
- if (get_irn_mode(consumer) == mode_T) {
- const ir_edge_t *cons_edge;
+static void collect_single_consumer(rss_t *rss, rss_irn_t *rss_irn, ir_node *consumer, int *got_sink) {
+ ir_node *block = rss->block;
- DBG((rss->dbg, LEVEL_2, "\t\tmode_T consumer %+F skipped\n", consumer));
+ assert(! is_Proj(consumer) && "Cannot handle Projs");
- for (i = 0; i < 2; ++i) {
- foreach_out_edge_kind(consumer, cons_edge, ekind[i]) {
- ir_node *cons_proj = get_edge_src_irn(cons_edge);
-
- assert(get_nodes_block(cons_proj) == block && "Proj in wrong block!");
-
- /* skip ignore nodes, as they do not really contribute to register pressure */
- if (arch_irn_is(rss->arch_env, cons_proj, ignore))
- continue;
-
- plist_insert_back(rss_irn->consumer_list, cons_proj);
- DBG((rss->dbg, LEVEL_3, "\t\t\treal consumer %+F\n", cons_proj));
- }
- }
- }
- else if (! arch_irn_is(rss->arch_env, consumer, ignore)) {
+ if (! is_Phi(consumer) && ! is_Block(consumer) && get_nodes_block(consumer) == block) {
+ if (! arch_irn_is(rss->arch_env, consumer, ignore) && ! plist_has_value(rss_irn->consumer_list, consumer)) {
plist_insert_back(rss_irn->consumer_list, consumer);
DBG((rss->dbg, LEVEL_2, "\t\tconsumer %+F\n", consumer));
}
else {
rss_irn->live_out = 1;
DBG((rss->dbg, LEVEL_2, "\t\tlive out %+F", consumer));
- if (! got_sink) {
+ if (! *got_sink) {
plist_insert_back(rss_irn->consumer_list, _sink);
- got_sink = 1;
+ *got_sink = 1;
DB((rss->dbg, LEVEL_2, ", %+F added instead", _sink));
}
DB((rss->dbg, LEVEL_2, "\n"));
}
-
- return got_sink;
}
/**
* Collect all nodes consuming the value(s) produced by current node.
*/
-static void collect_consumer(rss_t *rss, rss_irn_t *rss_irn, ir_node *irn) {
+static void collect_consumer(rss_t *rss, rss_irn_t *rss_irn, ir_node *irn, int *got_sink) {
const ir_edge_t *edge;
- int got_sink = 0;
int i;
- ir_edge_kind_t ekind[2] = { EDGE_KIND_NORMAL, EDGE_KIND_DEP };
+ ir_edge_kind_t ekind[2] = { EDGE_KIND_NORMAL, EDGE_KIND_DEP };
+ rss_irn_t *cur_node = get_rss_irn(rss, irn);
+
+ if (cur_node->havecons)
+ return;
+ cur_node->havecons = 1;
for (i = 0; i < 2; ++i) {
foreach_out_edge_kind(irn, edge, ekind[i]) {
ir_node *consumer = get_edge_src_irn(edge);
- got_sink = collect_single_consumer(rss, rss_irn, consumer, got_sink);
- }
- }
-}
-
-#if 0
-/**
- * We need to build the consumer and descendant list for _source.
- */
-static void collect_node_info_source(rss_t *rss) {
- const ir_edge_t *edge;
- rss_irn_t *rirn = get_rss_irn(rss, _source);
- ir_node *block = rss->block;
-
- if (rirn->handled)
- return;
-
- foreach_out_edge(block, edge) {
- ir_node *irn = get_edge_src_irn(edge);
- int i;
-
- for (i = get_irn_arity(n) - 1; i >= 0; --i) {
+ if (is_Proj(consumer)) {
+ //if (arch_get_irn_reg_class(rss->arch_env, consumer, -1) == rss->cls)
+ collect_consumer(rss, rss_irn, consumer, got_sink);
+ }
+ else
+ collect_single_consumer(rss, rss_irn, consumer, got_sink);
}
}
}
-static void reset_node_info(rss_irn_t *rss_irn) {
- /* Beware: array data resides on phase obstack, so it gets removed automatically */
-
- plist_clear(rss_irn->consumer_list);
- rss_irn->consumer = NULL;
-
- plist_clear(rss_irn->parent_list);
- rss_irn->parents = NULL;
-
- plist_clear(rss_irn->descendant_list);
- rss_irn->descendants = NULL;
-
- plist_clear(rss_irn->pkiller_list);
- rss_irn->pkillers = NULL;
-
- plist_clear(rss_irn->kill_value_list);
-
- rss_irn->killer = NULL;
- rss_irn->live_out = 0;
- rss_irn->visited = 0;
- rss_irn->handled = 0;
-}
-#endif /* if 0 */
-
/**
* Collects all consumer and descendant of a irn.
*/
static void collect_node_info(rss_t *rss, ir_node *irn) {
- rss_irn_t *rss_irn = get_rss_irn(rss, irn);
- int got_sink;
+ static unsigned cur_desc_walk = 0;
+ rss_irn_t *rss_irn = get_rss_irn(rss, irn);
+ int got_sink;
- assert(get_irn_mode(irn) != mode_T && "Cannot handle mode_T nodes.");
+ assert(! is_Proj(irn) && "Cannot handle Projs.");
/* check if node info is already available */
if (rss_irn->handled)
- phase_reinit_single_irn_data(&rss->ph, irn);
+ return;
+ //phase_reinit_single_irn_data(&rss->ph, irn);
DBG((rss->dbg, LEVEL_1, "\tcomputing consumers of %+F:\n", irn));
/* collect all consumer */
- collect_consumer(rss, rss_irn, irn);
+ got_sink = 0;
+ collect_consumer(rss, rss_irn, irn, &got_sink);
/* build sorted consumer array */
rss_irn->consumer = build_sorted_array_from_list(rss_irn->consumer_list, phase_obst(&rss->ph));
/* collect descendants */
got_sink = 0;
- collect_descendants(rss, rss_irn, irn, &got_sink);
+ collect_descendants(rss, rss_irn, irn, &got_sink, ++cur_desc_walk);
/* build sorted descendant array */
rss_irn->descendants = build_sorted_array_from_list(rss_irn->descendant_list, phase_obst(&rss->ph));
node->descendants = build_sorted_array_from_list(node->descendant_list, phase_obst(&rss->ph));
}
-#if 0
- /* check, if pkiller is a potential killer of irn */
- if (is_potential_killer(rss, pkiller, node)) {
- if (! plist_has_value(node->pkiller_list, pk_irn))
- plist_insert_back(node->pkiller_list, pk_irn);
- if (! plist_has_value(pkiller->kill_value_list, irn))
- plist_insert_back(pkiller->kill_value_list, irn);
- DBG((rss->dbg, LEVEL_1, "\tpotential killer %+F added to %+F\n", pk_irn, irn));
- }
-#endif
}
/**
if (is_potential_killer(rss, v, u)) {
if (! plist_has_value(u->pkiller_list, v_irn))
plist_insert_back(u->pkiller_list, v_irn);
- if (! plist_has_value(v->kill_value_list, u_irn))
- plist_insert_back(v->kill_value_list, u_irn);
+ v->kill_count++;
DBG((rss->dbg, LEVEL_2, "\t\tpotential killer %+F\n", v_irn));
}
}
u->killer = _sink;
}
- DEBUG_ONLY(
- if (firm_dbg_get_mask(rss->dbg))
- debug_vcg_dump_pkg(rss, NULL, 0);
- )
+ if (rss->opts->dump_flags & RSS_DUMP_PKG)
+ debug_vcg_dump_pkg(rss, NULL, 0);
}
/**
}
}
+#ifdef DEBUG_libfirm
/* print the given cbc for debugging purpose */
static void debug_print_cbc(firm_dbg_module_t *mod, cbc_t *cbc) {
ir_node *n;
DBG((mod, LEVEL_3, "\t\t\t%+F -> %+F\n", ke->src, ke->tgt));
}
}
+#endif
/**
* Construct the bipartite decomposition.
rss_irn_t *u = get_rss_irn(rss, u_irn);
int p_change = 1;
int c_change = 1;
+ int vrfy_ok = 1;
cbc_t *cbc;
plist_element_t *el2;
/* accumulate parents */
foreach_nodeset(cbc->children, t_irn) {
- rss_irn_t *t = get_rss_irn(rss, t_irn);
- plist_element_t *kvl_el;
-
foreach_pset(epk, k_edge) {
ir_node *val = k_edge->src;
- if (k_edge->src == t_irn && ! nodeset_find(cbc->parents, k_edge->src)) {
+ if (k_edge->tgt == t_irn && ! nodeset_find(cbc->parents, val)) {
nodeset_insert(cbc->parents, val);
p_change = 1;
- DBG((rss->dbg, LEVEL_3, "\t\t\t%+F added to parents\n", val));
+ DBG((rss->dbg, LEVEL_3, "\t\t\t%+F added to parents (killed by %+F)\n", val, t_irn));
}
}
}
/* accumulate children */
foreach_nodeset(cbc->parents, s_irn) {
- rss_irn_t *s = get_rss_irn(rss, s_irn);
- plist_element_t *pkl_el;
-
- foreach_plist(s->pkiller_list, pkl_el) {
- ir_node *val = plist_element_get_value(pkl_el);
+ foreach_pset(epk, k_edge) {
+ ir_node *val = k_edge->tgt;
- if (! nodeset_find(cbc->children, val)) {
+ if (k_edge->src == s_irn && ! nodeset_find(cbc->children, val)) {
nodeset_insert(cbc->children, val);
c_change = 1;
- DBG((rss->dbg, LEVEL_3, "\t\t\t%+F added to children\n", val));
+ DBG((rss->dbg, LEVEL_3, "\t\t\t%+F added to children (kills %+F)\n", val, s_irn));
}
}
}
rss_irn_t *s = get_rss_irn(rss, s_irn);
s->visited = 1;
/* assure bipartite property */
+#if 0
if (nodeset_find(cbc->children, s_irn)) {
nodeset_remove(cbc->children, s_irn);
DBG((rss->dbg, LEVEL_3, "\t\t\t%+F removed from to children\n", s_irn));
}
+#endif
}
/* update edges */
pset_remove(epk, kedge_root, HASH_RSS_EDGE(kedge_root));
}
+ /* verify the cbc */
+ foreach_nodeset(cbc->parents, s_irn) {
+ int is_killed = 0;
+
+ foreach_pset(cbc->kill_edges, k_edge) {
+ if (k_edge->src == s_irn) {
+ is_killed = 1;
+ pset_break(cbc->kill_edges);
+ break;
+ }
+ }
+
+ if (! is_killed) {
+ vrfy_ok = 0;
+ ir_fprintf(stderr, "Warning: parent %+F is not killed in current cbc\n", s_irn);
+ }
+ }
+ assert(vrfy_ok && "Verification of CBC failed");
+
/* add the connected bipartite component */
- pset_insert(rss->cbc_set, cbc, (unsigned)cbc->nr);
- DBG((rss->dbg, LEVEL_1, "\tbipartite component %d inserted:\n", cbc->nr));
- DEBUG_ONLY(debug_print_cbc(rss->dbg, cbc));
+ if (nodeset_count(cbc->parents) > 0 && nodeset_count(cbc->children) > 0 && pset_count(cbc->kill_edges) > 0)
+ pset_insert(rss->cbc_set, cbc, (unsigned)cbc->nr);
+ DBG((rss->dbg, LEVEL_2, "\tbipartite component %d inserted:\n", cbc->nr));
+ DEBUG_ONLY(
+ if (firm_dbg_get_mask(rss->dbg) & LEVEL_2)
+ debug_print_cbc(rss->dbg, cbc);
+ );
}
- if (firm_dbg_get_mask(rss->dbg))
+ if (rss->opts->dump_flags & RSS_DUMP_CBC)
debug_vcg_dump_bipartite(rss);
del_pset(epk);
DEL_ARR_F(sks);
}
- DEBUG_ONLY(
- if (firm_dbg_get_mask(rss->dbg))
- debug_vcg_dump_kill(rss);
- );
+ if (rss->opts->dump_flags & RSS_DUMP_KILL)
+ debug_vcg_dump_kill(rss);
del_pset(rss->cbc_set);
obstack_free(&obst, NULL);
* Adds the edge src -> tgt to the dvg. Checks if reverse edge is already there (asserts).
*/
static INLINE void add_dvg_edge(rss_t *rss, dvg_t *dvg, ir_node *src, ir_node *tgt, int have_source) {
- rss_edge_t *dvg_edge = obstack_alloc(phase_obst(&rss->ph), sizeof(*dvg_edge));
+ rss_edge_t *dvg_edge;
rss_edge_t key;
if (! have_source)
nodeset_insert(dvg->nodes, src);
+ else
+ assert(nodeset_find(dvg->nodes, src) != NULL && "Wrong assumption");
nodeset_insert(dvg->nodes, tgt);
- /* add an edge to our killer */
- dvg_edge->src = src;
- dvg_edge->tgt = tgt;
- dvg_edge->next = NULL;
-
key.src = tgt;
key.tgt = src;
assert(pset_find(dvg->edges, &key, HASH_RSS_EDGE(&key)) == NULL && "DVG must be acyclic!");
- /* add the edge to the DVG */
- DBG((rss->dbg, LEVEL_3, "\t\tadd edge %+F -> %+F\n", src, tgt));
- pset_insert(dvg->edges, dvg_edge, HASH_RSS_EDGE(dvg_edge));
+ key.src = src;
+ key.tgt = tgt;
+ if (NULL != pset_find(dvg->edges, &key, HASH_RSS_EDGE(&key))) {
+ /* add the edge to the DVG */
+ dvg_edge = obstack_alloc(phase_obst(&rss->ph), sizeof(*dvg_edge));
+
+ dvg_edge->src = src;
+ dvg_edge->tgt = tgt;
+ dvg_edge->next = NULL;
+
+ DBG((rss->dbg, LEVEL_3, "\t\tadd edge %+F -> %+F\n", src, tgt));
+ pset_insert(dvg->edges, dvg_edge, HASH_RSS_EDGE(dvg_edge));
+ }
}
/**
#endif /* if 0 */
}
- DEBUG_ONLY(
- if (firm_dbg_get_mask(rss->dbg))
- debug_vcg_dump_dvg(rss, dvg);
- );
+ if (rss->opts->dump_flags & RSS_DUMP_DVG)
+ debug_vcg_dump_dvg(rss, dvg);
}
/**
* Updates the dvg structure when a serialization edge from src -> tgt is added.
*/
static void update_dvg(rss_t *rss, dvg_t *dvg, rss_irn_t *src, rss_irn_t *tgt) {
- int i;
+ int i, j, idx;
+ rss_edge_t *edge;
+ rss_edge_t **arr = alloca(pset_count(dvg->edges) * sizeof(arr[0]));
- add_dvg_edge(rss, dvg, tgt->irn, src->irn, 1);
+ /*
+ Add an edge from serialization target to serialization src:
+ src cannot be alive with target
+ */
+ add_dvg_edge(rss, dvg, tgt->irn, src->irn, 0);
+ /* Add edges to src's descendants as well, they also getting serialized. */
for (i = ARR_LEN_SAFE(src->descendants) - 1; i >= 0; --i) {
add_dvg_edge(rss, dvg, tgt->irn, src->descendants[i], 1);
}
+
+ /* We also have to add edges from targets predecessors in dvg */
+ idx = 0;
+ /* We cannot insert elements into set over which we iterate ... */
+ foreach_pset(dvg->edges, edge) {
+ if (edge->tgt == tgt->irn) {
+ arr[idx++] = edge;
+ }
+ }
+
+ for (i = 0; i < idx; ++i) {
+ edge = arr[i];
+ add_dvg_edge(rss, dvg, edge->src, src->irn, 1);
+ for (j = ARR_LEN_SAFE(src->descendants) - 1; j >= 0; --j) {
+ add_dvg_edge(rss, dvg, edge->src, src->descendants[j], 1);
+ }
+ }
}
#if 0
The maximum cardinality bipartite matching gives us the minimal
chain partition, which corresponds to the maximum anti chains.
*/
- res = hungarian_solve(bp, assignment, &cost);
+ res = hungarian_solve(bp, assignment, &cost, 1);
assert(res == 0 && "Bipartite matching failed!");
hungarian_free(bp);
chain such, such it is parallel with the others.
*/
DBG((rss->dbg, LEVEL_1, "\t\tcomputing set of saturation values (MAX AC)\n"));
- DBG((rss->dbg, LEVEL_2, "\t\tstarting with:\n"));
- dump_nodeset(values, "\t\t\t");
+ DBG((rss->dbg, LEVEL_3, "\t\tstarting with:\n"));
+
+ DEBUG_ONLY(
+ if (firm_dbg_get_mask(rss->dbg) & LEVEL_3)
+ dump_nodeset(values, "\t\t\t");
+ )
+
temp = NULL;
do {
/*
assert(el && "Missing element in chain!");
/* If u has predecessor in chain: insert the predecessor */
- if (el = plist_element_get_prev(el)) {
+ if (el == plist_element_get_prev(el)) {
nodeset_insert(values, plist_element_get_value(el));
DBG((rss->dbg, LEVEL_3, "\t\t\tadding %+F to values\n", plist_element_get_value(el)));
}
DEBUG_ONLY(
if (firm_dbg_get_mask(rss->dbg) & LEVEL_2) {
dump_nodeset(values, "\t\t\t");
- debug_vcg_dump_pkg(rss, values, iteration);
}
);
+ if (rss->opts->dump_flags & RSS_DUMP_MAXAC)
+ debug_vcg_dump_pkg(rss, values, iteration);
+
del_nodeset(temp);
return values;
bitset_t *bs_vdesc = bitset_alloca(n_idx);
bitset_t *bs_tmp = bitset_alloca(n_idx);
bitset_t *bs_ukilldesc = bitset_alloca(n_idx);
- unsigned best_benefit = UINT_MAX;
- unsigned best_omega2 = UINT_MAX;
- unsigned best_benefit_omega20 = UINT_MAX;
- int has_positive_omega1 = 0;
+ int best_benefit = INT_MAX;
+ int best_omega2 = INT_MAX;
+ int best_benefit_omega20 = INT_MAX;
+ int has_omega1 = 0;
int j, k;
ir_node *irn;
rss_edge_t min_benefit_edge;
rss_edge_t min_omega20_edge;
- rss_irn_t *ser_u_omega1, *ser_v_omega1;
- rss_irn_t *ser_u_omega20, *ser_v_omega20;
+ rss_irn_t *ser_u_omega1 = NULL, *ser_v_omega1 = NULL;
+ rss_irn_t *ser_u_omega20 = NULL, *ser_v_omega20 = NULL;
DBG((rss->dbg, LEVEL_1, "\tcomputing admissible serializations:\n"));
In this case there is no serialization which could
reduce the registerpressure
*/
-#define IS_UNSERIALIZABLE_NODE(rss_node) \
- ((plist_count(rss_node->pkiller_list) == 1) && \
- is_Sink(rss_node->killer) && \
- (plist_count(rss_node->kill_value_list) == 0))
+#define IS_UNSERIALIZABLE_NODE(rss_node) \
+ ( \
+ ( \
+ (plist_count(rss_node->pkiller_list) == 1) && \
+ is_Sink(rss_node->killer) && \
+ (rss_node->kill_count == 0) \
+ ) || \
+ be_is_Barrier(rss_node->irn) || \
+ be_is_Keep(rss_node->irn) \
+ )
/* for all u in sat_vals */
for (i = 0; i < n; ++i) {
- rss_irn_t *u = get_rss_irn(rss, val_arr[i]);
- int u_height = get_irn_height(rss->h, val_arr[i]);
+ rss_irn_t *u = get_rss_irn(rss, val_arr[i]);
plist_element_t *el;
/* ignore nodes where serialization does not help */
- if (IS_UNSERIALIZABLE_NODE(u))
+ if (IS_UNSERIALIZABLE_NODE(u)) {
+ DBG((rss->dbg, LEVEL_3, "\t\t\t%+F considered unserializable\n", u->irn));
continue;
+ }
/* accumulate all descendants of all pkiller(u) */
bitset_clear_all(bs_ukilldesc);
ir_node *v_irn = val_arr[j];
rss_irn_t *v = get_rss_irn(rss, v_irn);
unsigned v_height = get_irn_height(rss->h, v_irn);
- unsigned omega1, omega2, is_pkiller;
+ int omega1, omega2, is_pkiller;
/* v cannot be serialized with itself
* ignore nodes where serialization does not help */
- if (i == j || IS_UNSERIALIZABLE_NODE(v))
+ if (i == j || IS_UNSERIALIZABLE_NODE(v)) {
+ if (i != j)
+ DBG((rss->dbg, LEVEL_3, "\t\t\t%+F considered unserializable\n", v->irn));
continue;
+ }
/* get descendants of v */
bitset_clear_all(bs_vdesc);
}
/* if v is in pkiller(u) */
- is_pkiller = plist_has_value(u->pkiller_list, val_arr[j]);
+ is_pkiller = plist_has_value(u->pkiller_list, v_irn);
/* for all vv in pkiller(u) */
foreach_plist(u->pkiller_list, el) {
ir_node *vv_irn = plist_element_get_value(el);
int add_edge;
- if (is_Sink(vv_irn))
+ if (is_Sink(vv_irn) || is_cfop(vv_irn))
continue;
if (is_pkiller)
*/
if (add_edge) {
- unsigned vv_height = get_irn_height(rss->h, vv_irn);
- unsigned mu1, mu2, critical_path_cost;
+ int vv_height = get_irn_height(rss->h, vv_irn);
+ int mu1, mu2, critical_path_cost;
/*
mu1 = | descendants(v) cut sat_vals |
mu2 = 0;
}
- //assert(mu1 >= mu2);
-
/* omega1 = mu1 - mu2 */
- omega1 = mu2 >= mu2 ? mu1 - mu2 : 0;
+ omega1 = mu1 - mu2;
- if (omega1 > 0)
- has_positive_omega1 = 1;
+ if (omega1 != 0)
+ has_omega1 = 1;
/* omega2 = increase of critical path */
critical_path_cost =
omega2 = critical_path_cost > rss->max_height ? critical_path_cost - rss->max_height : 0;
/* this keeps track of the edge with the best benefit */
- if (num_regs - omega1 < best_benefit) {
+ if (omega1 >= num_regs - n && omega1 < best_benefit) {
min_benefit_edge.src = v_irn;
min_benefit_edge.tgt = vv_irn;
ser_u_omega1 = u;
ser_v_omega1 = v;
- best_benefit = num_regs - omega1;
+ best_benefit = omega1;
+ ser->new_killer = is_pkiller;
}
/* this keeps track of the edge with the best omega1 costs where omega2 == 0 */
- if (omega2 == 0 && (num_regs - omega1 < best_benefit_omega20)) {
+ if (omega2 == 0 && omega1 >= num_regs - n && omega1 < best_benefit_omega20) {
min_omega20_edge.src = v_irn;
min_omega20_edge.tgt = vv_irn;
ser_u_omega20 = u;
ser_v_omega20 = v;
- best_benefit_omega20 = num_regs - omega1;
+ best_benefit_omega20 = omega1;
+ ser->new_killer = is_pkiller;
}
best_omega2 = MIN(best_omega2, omega2);
} /* for all v in sat_vals */
} /* for all u in sat_vals */
- if (! has_positive_omega1)
+ if (! has_omega1)
return NULL;
if (best_omega2 == 0) {
arch_put_non_ignore_regs(rss->arch_env, rss->cls, arch_nonign_bs);
be_abi_put_ignore_regs(rss->abi, rss->cls, abi_ign_bs);
bitset_andnot(arch_nonign_bs, abi_ign_bs);
- available_regs = bitset_popcnt(arch_nonign_bs);
+ available_regs = bitset_popcnt(arch_nonign_bs);
+ //num_live = pset_count(rss->live_block);
+ //available_regs -= num_live < available_regs ? num_live : 0;
DBG((rss->dbg, LEVEL_1, "\n\t#available regs: %d\n\n", available_regs));
while (sat_vals && (nodeset_count(sat_vals) > available_regs)) {
serialization_t *ser, best_ser;
rss_edge_t *edge = obstack_alloc(phase_obst(&rss->ph), sizeof(*edge));
- rss_irn_t *tgt, *src;
ir_node *dep_src, *dep_tgt;
best_ser.edge = edge;
/* TODO: try to find a cheaper way for updating height information */
rss->max_height = heights_recompute_block(rss->h, rss->block);
-#if 0
- src = get_rss_irn(rss, ser->edge->src);
- tgt = get_rss_irn(rss, ser->edge->tgt);
- src->killer = tgt->irn;
- del_nodeset(dvg.nodes);
- del_pset(dvg.edges);
- dvg.nodes = new_nodeset(plist_count(rss->nodes));
- dvg.edges = new_pset(cmp_rss_edges, plist_count(rss->nodes) * 5);
- compute_dvg(rss, &dvg);
-#endif /* if 0 */
-
/* Recompute the antichain for next serialization */
DBG((rss->dbg, LEVEL_1, "\tre-computing maximal antichain:\n"));
sat_vals = compute_maximal_antichain(rss, &dvg, iteration++);
rss->cls = cls;
DBG((rss->dbg, LEVEL_1, "register class %s\n", arch_register_class_name(cls)));
+ /* Get all live value at end of Block having current register class */
+ rss->live_block = pset_new_ptr(10);
+ be_liveness_end_of_block(rss->liveness, rss->arch_env, rss->cls, rss->block, rss->live_block);
+
/* reset the list of interesting nodes */
plist_clear(rss->nodes);
plist_insert_back(rss->nodes, _sink);
/* collect all nodes having a certain register class */
foreach_out_edge(block, edge) {
- ir_node *irn = get_edge_src_irn(edge);
+ ir_node *irn = get_edge_src_irn(edge);
+ ir_mode *mode = get_irn_mode(irn);
- if (get_irn_mode(irn) == mode_T || be_is_Keep(irn) || be_is_Barrier(skip_Proj(irn)))
+ /*
+ We skip:
+ - mode_T nodes (the projs are asked)
+ - mode_X nodes (control flow nodes are always scheduled last)
+ - Keeps (they are always immediately scheduled)
+ - Phi (same as Keep)
+ */
+ if (mode == mode_T || mode == mode_X || is_Phi(irn))
continue;
- if (! arch_irn_is(rss->arch_env, irn, ignore) && arch_get_irn_reg_class(rss->arch_env, irn, -1) == cls) {
- plist_insert_back(rss->nodes, irn);
+ /*
+ In case of a proj, we skip
+ - Barrier (they are a Barrier :)
+ - Start
+ - the Proj itself, as it's scheduled always with it's super node
+ */
+ if (is_Proj(irn)) {
+ ir_node *pred = get_Proj_pred(irn);
+ if (be_is_Barrier(pred) || is_Start(pred))
+ continue;
+ }
+
+ /* calculate the descendants and consumer for each node in the block */
+ collect_node_info(rss, skip_Proj(irn));
+
+ if (be_is_Keep(irn))
+ continue;
- /* calculate the descendants and consumer for each node in the block */
- collect_node_info(rss, irn);
+ if (! arch_irn_is(rss->arch_env, irn, ignore) && arch_get_irn_reg_class(rss->arch_env, irn, -1) == cls) {
+ plist_insert_back(rss->nodes, skip_Proj(irn));
}
+ //}
}
/* compute the potential killing set PK(G) */
add the necessary dependencies to the irg.
*/
perform_value_serialization_heuristic(rss);
+
+ del_pset(rss->live_block);
}
phase_free(&rss->ph);
}
+#ifdef WITH_LIBCORE
+/**
+ * Register the options.
+ */
+void be_init_schedrss(void) {
+ lc_opt_entry_t *be_grp = lc_opt_get_grp(firm_opt_get_root(), "be");
+ lc_opt_entry_t *sched_grp = lc_opt_get_grp(be_grp, "sched");
+ lc_opt_entry_t *rss_grp = lc_opt_get_grp(sched_grp, "rss");
+
+ lc_opt_add_table(rss_grp, rss_option_table);
+}
+
+BE_REGISTER_MODULE_CONSTRUCTOR(be_init_schedrss);
+#endif /* WITH_LIBCORE */
+
/**
* Preprocess the irg for scheduling.
*/
FIRM_DBG_REGISTER(rss.dbg, "firm.be.sched.rss");
- firm_dbg_set_mask(rss.dbg, LEVEL_1 | LEVEL_2 | LEVEL_3);
+ //firm_dbg_set_mask(rss.dbg, LEVEL_1 | LEVEL_2 | LEVEL_3);
init_rss_special_nodes(birg->irg);
rss.abi = birg->abi;
rss.h = heights_new(birg->irg);
rss.nodes = plist_new();
+ rss.opts = &rss_options;
+ rss.liveness = be_liveness(birg->irg);
irg_block_walk_graph(birg->irg, NULL, process_block, &rss);
heights_free(rss.h);
plist_free(rss.nodes);
+ be_liveness_free(rss.liveness);
+
+ if (birg->main_env->options->dump_flags & DUMP_SCHED)
+ be_dump(rss.irg, "-rss", dump_ir_block_graph);
}
projects / libfirm / blobdiff