#include "besched_t.h"
#include "belive_t.h"
#include "bearch.h"
+#include "beifg.h"
#include "bechordal_t.h"
#include "bechordal_draw.h"
+#define DBG_LEVEL SET_LEVEL_0
+#define DBG_LEVEL_CHECK SET_LEVEL_0
+
#define NO_COLOR (-1)
#undef DUMP_INTERVALS
-#undef DUMP_PRESSURE
-#undef DUMP_IFG
-#if defined(DUMP_IFG) && !defined(BUILD_GRAPH)
-#error Must define BUILD_GRAPH to be able to dump it.
-#endif
+typedef struct _be_chordal_alloc_env_t {
+ be_chordal_env_t *chordal_env;
+ bitset_t *live; /**< A liveness bitset. */
+ bitset_t *colors; /**< The color mask. */
+ bitset_t *in_colors; /**< Colors used by live in values. */
+ int colors_n; /**< The number of colors. */
+} be_chordal_alloc_env_t;
#include "fourcc.h"
/* Make a fourcc for border checking. */
#define BORDER_FOURCC FOURCC('B', 'O', 'R', 'D')
-static firm_dbg_module_t *dbg;
-
-#ifdef BUILD_GRAPH
-
-#define IF_EDGE_HASH(e) ((e)->src)
-#define IF_NODE_HASH(n) ((n)->nnr)
-
-static int if_edge_cmp(const void *p1, const void *p2, size_t size)
-{
- const if_edge_t *e1 = p1;
- const if_edge_t *e2 = p2;
-
- return !(e1->src == e2->src && e1->tgt == e2->tgt);
-}
-
-static int if_node_cmp(const void *p1, const void *p2, size_t size)
-{
- const if_node_t *n1 = p1;
- const if_node_t *n2 = p2;
-
- return n1->nnr != n2->nnr;
-}
-
-static INLINE if_edge_t *edge_init(if_edge_t *edge, int src, int tgt)
-{
- /* Bring the smaller entry to src. */
- if(src > tgt) {
- edge->src = tgt;
- edge->tgt = src;
- } else {
- edge->src = src;
- edge->tgt = tgt;
- }
-
- return edge;
-}
-
-static INLINE void add_if(const be_chordal_env_t *env, int src, int tgt)
-{
- if_edge_t edge;
- if_node_t node, *src_node, *tgt_node;
- /* insert edge */
- edge_init(&edge, src, tgt);
- set_insert(env->edges, &edge, sizeof(edge), IF_EDGE_HASH(&edge));
-
- /* insert nodes */
- node.nnr = src;
- node.neighb = pset_new_ptr(8);
- src_node = set_insert(env->nodes, &node, sizeof(node), IF_NODE_HASH(&node));
- node.nnr = tgt;
- node.neighb = pset_new_ptr(8);
- tgt_node = set_insert(env->nodes, &node, sizeof(node), IF_NODE_HASH(&node));
-
- /* insert neighbors into nodes */
- pset_insert_ptr(src_node->neighb, tgt_node);
- pset_insert_ptr(tgt_node->neighb, src_node);
-}
-
-static INLINE int are_connected(const be_chordal_env_t *env, int src, int tgt)
-{
- if_edge_t edge;
- edge_init(&edge, src, tgt);
- return set_find(env->edges, &edge, sizeof(edge), IF_EDGE_HASH(&edge)) != NULL;
-}
-
-int ifg_has_edge(const be_chordal_env_t *env, const if_node_t *n1, const if_node_t* n2) {
- return are_connected(env, n1->nnr, n2->nnr);
-}
-
-#ifdef DUMP_IFG
-
-static void dump_ifg(const be_chordal_env_t *env)
-{
- FILE *f;
- set *edges = env->edges;
- ir_graph *irg = env->irg;
- char filename[128];
-
- ir_snprintf(filename, sizeof(filename), "ifg_%s_%F.dot", env->cls->name, irg);
-
- if((f = fopen(filename, "wt")) != NULL) {
- bitset_pos_t pos;
- int n_edges = 0;
- if_edge_t *edge;
- bitset_t *bs = bitset_malloc(get_graph_node_count(irg));
-
- ir_fprintf(f, "graph \"%F\" {\n", irg);
- fprintf(f, "\tnode [shape=box,style=filled]\n");
-
- for(edge = set_first(edges); edge; edge = set_next(edges)) {
- bitset_set(bs, edge->src);
- bitset_set(bs, edge->tgt);
- n_edges++;
- }
-
- fprintf(f, "\tx [label=\"nodes: %u, edges: %d\"]\n", bitset_popcnt(bs), n_edges);
-
- bitset_foreach(bs, pos) {
- int nr = (int) pos;
- ir_node *irn = get_irn_for_graph_nr(irg, nr);
-
- ir_fprintf(f, "\tn%d [label=\"%+F\"]\n", nr, irn);
- }
-
- for(edge = set_first(edges); edge; edge = set_next(edges)) {
- fprintf(f, "\tn%d -- n%d [len=5]\n", edge->src, edge->tgt);
- }
-
- fprintf(f, "}\n");
- fclose(f);
-
- bitset_free(bs);
- }
-
-}
-
-#endif /* DUMP_IFG */
-
-#endif /* BUILD_GRAPH */
-
static void check_border_list(struct list_head *head)
{
border_t *x;
/* also allocate the def and tie it to the use. */
def = obstack_alloc(&env->obst, sizeof(*def));
- memset(def, 0, sizeof(*def));
+ memset(def, 0, sizeof(*def));
b->other_end = def;
def->other_end = b;
b->is_real = is_real;
b->irn = irn;
b->step = step;
- check_heads(env);
list_add_tail(&b->list, head);
- check_heads(env);
- DBG((dbg, LEVEL_5, "\t\t%s adding %+F, step: %d\n",
- is_def ? "def" : "use", irn, step));
+ DBG((env->dbg, LEVEL_5, "\t\t%s adding %+F, step: %d\n", is_def ? "def" : "use", irn, step));
return b;
}
+/**
+ * Check, if an irn is of the register class currently under processing.
+ * @param env The chordal environment.
+ * @param irn The node.
+ * @return 1, if the node is of that register class, 0 if not.
+ */
static INLINE int has_reg_class(const be_chordal_env_t *env, const ir_node *irn)
{
- return arch_irn_has_reg_class(env->arch_env, irn, arch_pos_make_out(0), env->cls);
+ return arch_irn_has_reg_class(env->main_env->arch_env, irn, -1, env->cls);
}
/**
#define border_use(irn, step, real) \
border_add(env, head, irn, step, ++pressure, 0, real)
- be_chordal_env_t *env = env_ptr;
- bitset_t *live = env->live;
+ be_chordal_alloc_env_t *alloc_env = env_ptr;
+ be_chordal_env_t *env = alloc_env->chordal_env;
+ bitset_t *live = alloc_env->live;
+ firm_dbg_module_t *dbg = env->dbg;
ir_node *irn;
int i, n;
struct list_head *head;
pset *live_in = put_live_in(block, pset_new_ptr_default());
pset *live_end = put_live_end(block, pset_new_ptr_default());
- const arch_register_class_t *cls = env->cls;
DBG((dbg, LEVEL_1, "Computing pressure in block %+F\n", block));
bitset_clear_all(live);
/* Set up the border list in the block info */
head = obstack_alloc(&env->obst, sizeof(*head));
INIT_LIST_HEAD(head);
- assert(pmap_get(env->border_heads, block) == NULL);
+ assert(pmap_get(env->border_heads, block) == NULL);
pmap_insert(env->border_heads, block, head);
/*
* They are necessary to build up real intervals.
*/
for(irn = pset_first(live_end); irn; irn = pset_next(live_end)) {
- DBG((dbg, LEVEL_3, "\tMaking live: %+F/%d\n", irn, get_irn_graph_nr(irn)));
- bitset_set(live, get_irn_graph_nr(irn));
- if(has_reg_class(env, irn))
+ if(has_reg_class(env, irn)) {
+ DBG((dbg, LEVEL_3, "\tMaking live: %+F/%d\n", irn, get_irn_graph_nr(irn)));
+ bitset_set(live, get_irn_graph_nr(irn));
border_use(irn, step, 0);
+ }
}
++step;
* register of the current class, make a border for it.
*/
if(has_reg_class(env, irn)) {
- bitset_pos_t elm;
int nr = get_irn_graph_nr(irn);
bitset_clear(live, nr);
border_def(irn, step, 1);
-
-#ifdef BUILD_GRAPH
- bitset_foreach(live, elm)
- add_if(env, nr, (int) elm);
-#endif
}
/*
}
}
- check_heads(env);
del_pset(live_in);
del_pset(live_end);
static void assign(ir_node *block, void *env_ptr)
{
- be_chordal_env_t *env = env_ptr;
- struct obstack *obst = &env->obst;
- bitset_t *live = env->live;
- bitset_t *colors = env->colors;
- bitset_t *in_colors = env->in_colors;
- const arch_register_class_t *cls = env->cls;
-
- /* Mark the obstack level and allocate the temporary tmp_colors */
- void *obstack_level = obstack_base(obst);
- /*bitset_t *tmp_colors = bitset_obstack_alloc(obst, env->colors_n);*/
+ be_chordal_alloc_env_t *alloc_env = env_ptr;
+ be_chordal_env_t *env = alloc_env->chordal_env;
+ firm_dbg_module_t *dbg = env->dbg;
+ bitset_t *live = alloc_env->live;
+ bitset_t *colors = alloc_env->colors;
+ bitset_t *in_colors = alloc_env->in_colors;
+ const arch_env_t *arch_env = env->main_env->arch_env;
const ir_node *irn;
border_t *b;
struct list_head *head = get_block_border_head(env, block);
pset *live_in = put_live_in(block, pset_new_ptr_default());
- check_heads(env);
-
-
bitset_clear_all(live);
bitset_clear_all(colors);
bitset_clear_all(in_colors);
*/
for(irn = pset_first(live_in); irn; irn = pset_next(live_in)) {
if(has_reg_class(env, irn)) {
- const arch_register_t *reg = arch_get_irn_register(env->arch_env, irn, 0);
- int col;
+ const arch_register_t *reg = arch_get_irn_register(arch_env, irn);
+ int col;
- assert(reg && "Node must have been assigned a register");
+ assert(reg && "Node must have been assigned a register");
col = arch_register_get_index(reg);
/* Mark the color of the live in value as used. */
* color.
*/
if(b->is_def && !is_live_in(block, irn)) {
- const arch_register_t *reg;
+ const arch_register_t *reg;
int col = NO_COLOR;
DBG((dbg, LEVEL_4, "\tcolors in use: %b\n", colors));
- col = bitset_next_clear(colors, 0);
- reg = arch_register_for_index(env->cls, col);
+ col = bitset_next_clear(colors, 0);
+ reg = arch_register_for_index(env->cls, col);
- assert(arch_get_irn_register(env->arch_env, irn, 0) == NULL
- && "This node must not have been assigned a register yet");
+ assert(arch_get_irn_register(arch_env, irn) == NULL && "This node must not have been assigned a register yet");
assert(!bitset_is_set(live, nr) && "Value's definition must not have been encountered");
bitset_set(colors, col);
bitset_set(live, nr);
- arch_set_irn_register(env->arch_env, irn, 0, reg);
+ arch_set_irn_register(arch_env, irn, reg);
DBG((dbg, LEVEL_1, "\tassigning register %s(%d) to %+F\n",
arch_register_get_name(reg), col, irn));
}
/* Clear the color upon a use. */
else if(!b->is_def) {
- const arch_register_t *reg = arch_get_irn_register(env->arch_env, irn, 0);
+ const arch_register_t *reg = arch_get_irn_register(arch_env, irn);
int col;
- assert(reg && "Register must have been assigned");
+ assert(reg && "Register must have been assigned");
- col = arch_register_get_index(reg);
+ col = arch_register_get_index(reg);
assert(bitset_is_set(live, nr) && "Cannot have a non live use");
bitset_clear(colors, col);
}
}
- /* Free the auxillary data on the obstack. */
- obstack_free(obst, obstack_level);
-
- del_pset(live_in);
+ del_pset(live_in);
}
-void be_ra_chordal_init(void)
+void be_ra_chordal_color(be_chordal_env_t *chordal_env)
{
- dbg = firm_dbg_register(DBG_CHORDAL);
- firm_dbg_set_mask(dbg, -1);
-}
+ int node_count = get_graph_node_count(chordal_env->irg);
+ int colors_n = arch_register_class_n_regs(chordal_env->cls);
+ ir_graph *irg = chordal_env->irg;
-be_chordal_env_t *be_ra_chordal(ir_graph *irg,
- const arch_env_t *arch_env,
- const arch_register_class_t *cls)
-{
- int node_count = get_graph_node_count(irg);
- int colors_n = arch_register_class_n_regs(cls);
- be_chordal_env_t *env = malloc(sizeof(*env));
+ be_chordal_alloc_env_t env;
if(get_irg_dom_state(irg) != dom_consistent)
compute_doms(irg);
- obstack_init(&env->obst);
-
-#ifdef BUILD_GRAPH
- env->edges = new_set(if_edge_cmp, node_count);
- env->nodes = new_set(if_node_cmp, node_count);
-#endif
-
- env->live = bitset_obstack_alloc(&env->obst, node_count);
- env->colors = bitset_obstack_alloc(&env->obst, colors_n);
- env->in_colors = bitset_obstack_alloc(&env->obst, colors_n);
- env->colors_n = colors_n;
- env->cls = cls;
- env->arch_env = arch_env;
- env->irg = irg;
- env->border_heads = pmap_create();
+ env.chordal_env = chordal_env;
+ env.live = bitset_malloc(node_count);
+ env.colors = bitset_malloc(colors_n);
+ env.in_colors = bitset_malloc(colors_n);
+ env.colors_n = colors_n;
/* First, determine the pressure */
- dom_tree_walk_irg(irg, pressure, NULL, env);
-
- /* Insert probable spills */
- be_ra_chordal_spill(env);
+ dom_tree_walk_irg(irg, pressure, NULL, &env);
/* Assign the colors */
- dom_tree_walk_irg(irg, assign, NULL, env);
-
-#ifdef DUMP_IFG
- dump_ifg(env);
-#endif
+ dom_tree_walk_irg(irg, assign, NULL, &env);
#ifdef DUMP_INTERVALS
{
ir_snprintf(buf, sizeof(buf), "ifg_%s_%F.eps", cls->name, irg);
plotter = new_plotter_ps(buf);
- draw_interval_tree(&draw_chordal_def_opts, env, plotter, arch_env, cls);
+ draw_interval_tree(&draw_chordal_def_opts, chordal_env, plotter, env->arch_env, cls);
plotter_free(plotter);
}
#endif
- return env;
-}
-
-void be_ra_chordal_check(be_chordal_env_t *chordal_env) {
- const arch_env_t *arch_env;
- struct obstack ob;
- pmap_entry *pme;
- ir_node **nodes, *n1, *n2;
- int i, o;
-
- arch_env = chordal_env->arch_env;
-
- /* Collect all irns */
- obstack_init(&ob);
- pmap_foreach(chordal_env->border_heads, pme) {
- border_t *curr;
- struct list_head *head = pme->value;
- list_for_each_entry(border_t, curr, head, list)
- if (curr->is_def && curr->is_real)
- if (arch_get_irn_reg_class(arch_env, curr->irn, arch_pos_make_out(0)) == chordal_env->cls)
- obstack_ptr_grow(&ob, curr->irn);
- }
- obstack_ptr_grow(&ob, NULL);
- nodes = (ir_node **) obstack_finish(&ob);
- /* Check them */
- for (i = 0, n1 = nodes[i]; n1; n1 = nodes[++i]) {
- const arch_register_t *n1_reg, *n2_reg;
-
- n1_reg = arch_get_irn_register(arch_env, n1, 0);
- assert(arch_reg_is_allocatable(arch_env, n1, arch_pos_make_out(0), n1_reg) && "Register constraint does not hold");
-
- for (o = i+1, n2 = nodes[o]; n2; n2 = nodes[++o]) {
- n2_reg = arch_get_irn_register(arch_env, n2, 0);
- assert(!(nodes_interfere(chordal_env, n1, n2) && n1_reg == n2_reg) && "Interfering values have the same color!");
- }
- }
- obstack_free(&ob, NULL);
-}
-
-/* BETTER #ifdef BUILD_GRAPH --> faster version of checker with edges */
-
-void be_ra_chordal_done(be_chordal_env_t *env)
-{
-#ifdef BUILD_GRAPH
- {
- if_node_t *ifn;
- for(ifn = set_first(env->nodes); ifn; ifn = set_next(env->nodes))
- free(ifn->neighb);
- free(env->nodes);
- free(env->edges);
- }
-#endif
-
- pmap_destroy(env->border_heads);
- obstack_free(&env->obst, NULL);
- free(env);
-}
-
-int nodes_interfere(const be_chordal_env_t *env, const ir_node *a, const ir_node *b)
-{
-#ifdef BUILD_GRAPH
- return are_connected(env, get_irn_graph_nr(a), get_irn_graph_nr(b));
-#else
- return values_interfere(a, b);
-#endif /* BUILD_GRAPH */
+ free(env.live);
+ free(env.colors);
+ free(env.in_colors);
}
-
-#ifdef BUILD_GRAPH
-
-set *be_ra_get_ifg_edges(const be_chordal_env_t *env) {
- return env->edges;
-}
-
-set *be_ra_get_ifg_nodes(const be_chordal_env_t *env) {
- return env->nodes;
-}
-
-#endif