#endif
+typedef float real_t;
+#define REAL(C) (C ## f)
+
static int last_chunk_id = 0;
static int recolor_limit = 4;
-static double dislike_influence = 0.1;
+static real_t dislike_influence = REAL(0.1);
typedef struct _col_cost_t {
- int col;
- double cost;
+ int col;
+ real_t cost;
} col_cost_t;
/**
*/
typedef struct _aff_chunk_t {
const ir_node **n; /**< An ARR_F containing all nodes of the chunk. */
- bitset_t *nodes; /**< A bitset containing all nodes inside this chunk. */
- bitset_t *interfere; /**< A bitset containing all interfering neighbours of the nodes in this chunk. */
+ const ir_node **interfere; /**< An ARR_F containing all inference. */
int weight; /**< Weight of this chunk */
unsigned weight_consistent : 1; /**< Set if the weight is consistent. */
- unsigned deleted : 1; /**< Set if the was deleted. */
- int id; /**< For debugging: An id of this chunk. */
+ unsigned deleted : 1; /**< For debugging: Set if the was deleted. */
+ int id; /**< An id of this chunk. */
int visited;
- col_cost_t *color_affinity;
+ col_cost_t color_affinity[1];
} aff_chunk_t;
/**
int tmp_col; /**< a temporary assigned color */
unsigned fixed : 1; /**< the color is fixed */
struct list_head list; /**< Queue for coloring undo. */
- double constr_factor;
+ real_t constr_factor;
} co_mst_irn_t;
#define get_co_mst_irn(mst_env, irn) (phase_get_or_set_irn_data(&(mst_env)->ph, (irn)))
* Write a chunk to stderr for debugging.
*/
static void dbg_aff_chunk(const co_mst_env_t *env, const aff_chunk_t *c) {
- bitset_pos_t idx;
+ int i, l;
+ (void) env;
if (c->weight_consistent)
ir_fprintf(stderr, " $%d ", c->weight);
ir_fprintf(stderr, "{");
- bitset_foreach(c->nodes, idx) {
- ir_node *n = get_idx_irn(env->co->irg, idx);
+ for (i = 0, l = ARR_LEN(c->n); i < l; ++i) {
+ const ir_node *n = c->n[i];
ir_fprintf(stderr, " %+F,", n);
}
ir_fprintf(stderr, "}");
if (bitset_popcnt(node->adm_colors) < 1)
fprintf(stderr, "no admissible colors?!?");
else {
- bitset_foreach(node->adm_colors, idx)
+ bitset_foreach(node->adm_colors, idx) {
fprintf(stderr, " %d", idx);
+ }
}
}
static __attribute__((unused)) int cmp_col_cost_lt(const void *a, const void *b) {
const col_cost_t *c1 = a;
const col_cost_t *c2 = b;
- double diff = c1->cost - c2->cost;
+ real_t diff = c1->cost - c2->cost;
return (diff > 0) - (diff < 0);
}
static int cmp_col_cost_gt(const void *a, const void *b) {
const col_cost_t *c1 = a;
const col_cost_t *c2 = b;
- double diff = c2->cost - c1->cost;
+ real_t diff = c2->cost - c1->cost;
return (diff > 0) - (diff < 0);
}
* Creates a new affinity chunk
*/
static INLINE aff_chunk_t *new_aff_chunk(co_mst_env_t *env) {
- aff_chunk_t *c = xmalloc(sizeof(*c));
+ aff_chunk_t *c = xmalloc(sizeof(*c) + (env->n_regs - 1) * sizeof(c->color_affinity[0]));
+ c->n = NEW_ARR_F(const ir_node *, 0);
+ c->interfere = NEW_ARR_F(const ir_node *, 0);
c->weight = -1;
c->weight_consistent = 0;
- c->n = NEW_ARR_F(const ir_node *, 0);
- c->nodes = bitset_irg_malloc(env->co->irg);
- c->interfere = bitset_irg_malloc(env->co->irg);
- c->color_affinity = xmalloc(env->n_regs * sizeof(c->color_affinity[0]));
- c->id = last_chunk_id++;
+ c->deleted = 0;
+ c->id = ++last_chunk_id;
c->visited = 0;
pset_insert(env->chunkset, c, c->id);
return c;
*/
static INLINE void delete_aff_chunk(co_mst_env_t *env, aff_chunk_t *c) {
pset_remove(env->chunkset, c, c->id);
- bitset_free(c->nodes);
- bitset_free(c->interfere);
- xfree(c->color_affinity);
+ DEL_ARR_F(c->interfere);
DEL_ARR_F(c->n);
c->deleted = 1;
free(c);
}
+/**
+ * binary search of sorted nodes.
+ *
+ * @return the position where n is found in the array arr or ~pos
+ * if the nodes is not here.
+ */
+static INLINE int nodes_bsearch(const ir_node **arr, const ir_node *n) {
+ int hi = ARR_LEN(arr);
+ int lo = 0;
+
+ while (lo < hi) {
+ int md = lo + ((hi - lo) >> 1);
+
+ if (arr[md] == n)
+ return md;
+ if (arr[md] < n)
+ lo = md + 1;
+ else
+ hi = md;
+ }
+
+ return ~lo;
+}
+
+/** Check if a node n can be found inside arr. */
+static int node_contains(const ir_node **arr, const ir_node *n) {
+ int i = nodes_bsearch(arr, n);
+ return i >= 0;
+}
+
+/**
+ * Insert a node into the sorted nodes list.
+ *
+ * @return 1 if the node was inserted, 0 else
+ */
+static int nodes_insert(const ir_node ***arr, const ir_node *irn) {
+ int idx = nodes_bsearch(*arr, irn);
+
+ if (idx < 0) {
+ int i, n = ARR_LEN(*arr);
+ const ir_node **l;
+
+ ARR_APP1(const ir_node *, *arr, irn);
+
+ /* move it */
+ idx = ~idx;
+ l = *arr;
+ for (i = n - 1; i >= idx; --i)
+ l[i + 1] = l[i];
+ l[idx] = irn;
+ return 1;
+ }
+ return 0;
+}
+
/**
* Adds a node to an affinity chunk
*/
static INLINE void aff_chunk_add_node(aff_chunk_t *c, co_mst_irn_t *node) {
int i;
- if (bitset_is_set(c->nodes, get_irn_idx(node->irn)))
+ if (! nodes_insert(&c->n, node->irn))
return;
c->weight_consistent = 0;
node->chunk = c;
- bitset_set(c->nodes, get_irn_idx(node->irn));
-
- ARR_APP1(ir_node *, c->n, node->irn);
for (i = node->n_neighs - 1; i >= 0; --i) {
ir_node *neigh = node->int_neighs[i];
- bitset_set(c->interfere, get_irn_idx(neigh));
+ nodes_insert(&c->interfere, neigh);
}
}
bitset_andnot(res->adm_colors, env->ignore_regs);
/* compute the constraint factor */
- res->constr_factor = (double) (1 + env->n_regs - bitset_popcnt(res->adm_colors)) / env->n_regs;
+ res->constr_factor = (real_t) (1 + env->n_regs - bitset_popcnt(res->adm_colors)) / env->n_regs;
/* set the number of interfering affinity neighbours to -1, they are calculated later */
res->int_aff_neigh = -1;
/**
* Check if affinity chunk @p chunk interferes with node @p irn.
*/
-static INLINE int aff_chunk_interferes(co_mst_env_t *env, const aff_chunk_t *chunk, const ir_node *irn) {
- (void) env;
- return bitset_is_set(chunk->interfere, get_irn_idx(irn));
+static INLINE int aff_chunk_interferes(const aff_chunk_t *chunk, const ir_node *irn) {
+ return node_contains(chunk->interfere, irn);
}
/**
* Check if there are interference edges from c1 to c2.
- * @param env The global co_mst environment
* @param c1 A chunk
* @param c2 Another chunk
* @return 1 if there are interferences between nodes of c1 and c2, 0 otherwise.
*/
-static INLINE int aff_chunks_interfere(co_mst_env_t *env, const aff_chunk_t *c1, const aff_chunk_t *c2) {
- (void) env;
+static INLINE int aff_chunks_interfere(const aff_chunk_t *c1, const aff_chunk_t *c2) {
+ int i;
+
if (c1 == c2)
return 0;
/* check if there is a node in c2 having an interfering neighbor in c1 */
- return bitset_intersect(c1->interfere, c2->nodes);
+ for (i = ARR_LEN(c2->n) - 1; i >= 0; --i) {
+ const ir_node *irn = c2->n[i];
+
+ if (node_contains(c1->interfere, irn))
+ return 1;
+ }
+ return 0;
}
/**
}
} else {
/* c2 already exists */
- if (! aff_chunk_interferes(env, c2, src)) {
+ if (! aff_chunk_interferes(c2, src)) {
aff_chunk_add_node(c2, get_co_mst_irn(env, src));
goto absorbed;
}
}
} else if (c2 == NULL) {
/* c1 already exists */
- if (! aff_chunk_interferes(env, c1, tgt)) {
+ if (! aff_chunk_interferes(c1, tgt)) {
aff_chunk_add_node(c1, get_co_mst_irn(env, tgt));
goto absorbed;
}
- } else if (c1 != c2 && ! aff_chunks_interfere(env, c1, c2)) {
+ } else if (c1 != c2 && ! aff_chunks_interfere(c1, c2)) {
int idx, len;
for (idx = 0, len = ARR_LEN(c2->n); idx < len; ++idx)
aff_chunk_add_node(c1, get_co_mst_irn(env, c2->n[idx]));
- bitset_or(c1->interfere, c2->interfere);
+ for (idx = 0, len = ARR_LEN(c2->interfere); idx < len; ++idx) {
+ const ir_node *irn = c2->interfere[idx];
+ nodes_insert(&c1->interfere, irn);
+ }
+
c1->weight_consistent = 0;
delete_aff_chunk(env, c2);
for (i = 0; i < env->n_regs; ++i) {
c->color_affinity[i].col = i;
- c->color_affinity[i].cost = 0.0;
+ c->color_affinity[i].cost = REAL(0.0);
}
for (idx = 0, len = ARR_LEN(c->n); idx < len; ++idx) {
co_mst_irn_t *node = get_co_mst_irn(env, n);
node->chunk = c;
- if (node->constr_factor > 0.0) {
+ if (node->constr_factor > REAL(0.0)) {
bitset_pos_t col;
bitset_foreach (node->adm_colors, col)
c->color_affinity[col].cost += node->constr_factor;
neighb_t *neigh;
co_gs_foreach_neighb(an, neigh) {
const ir_node *m = neigh->irn;
- const int m_idx = get_irn_idx(m);
/* skip ignore nodes */
if (arch_irn_is(env->aenv, m, ignore))
continue;
- w += bitset_is_set(c->nodes, m_idx) ? neigh->costs : 0;
+ w += node_contains(c->n, m) ? neigh->costs : 0;
}
}
}
for (i = 0; i < env->n_regs; ++i)
- c->color_affinity[i].cost *= (1.0 / ARR_LEN(c->n));
+ c->color_affinity[i].cost *= (REAL(1.0) / ARR_LEN(c->n));
c->weight = w;
// c->weight = bitset_popcnt(c->nodes);
pqueue_put(env->chunks, curr_chunk, curr_chunk->weight);
}
+
foreach_phase_irn(&env->ph, n) {
co_mst_irn_t *mirn = get_co_mst_irn(env, n);
n2 = get_co_mst_irn(env, m);
- if (! bitset_is_set(visited, m_idx) &&
- decider(n2, col) &&
- ! n2->fixed &&
- ! aff_chunk_interferes(env, chunk, m) &&
- bitset_is_set(orig_chunk->nodes, m_idx))
+ if (! bitset_is_set(visited, m_idx) &&
+ decider(n2, col) &&
+ ! n2->fixed &&
+ ! aff_chunk_interferes(chunk, m) &&
+ node_contains(orig_chunk->n, m))
{
/*
following conditions are met:
tmp_chunk = new_aff_chunk(env);
waitq_put(tmp, tmp_chunk);
expand_chunk_from(env, node, visited, tmp_chunk, c, decider, col);
- assert(bitset_popcnt(tmp_chunk->nodes) > 0 && "No nodes added to chunk");
+ assert(ARR_LEN(tmp_chunk->n) > 0 && "No nodes added to chunk");
/* remember the local best */
aff_chunk_assure_weight(env, tmp_chunk);
static void determine_color_costs(co_mst_env_t *env, co_mst_irn_t *node, col_cost_t *costs) {
int *neigh_cols = alloca(env->n_regs * sizeof(*neigh_cols));
int n_loose = 0;
- double coeff;
+ real_t coeff;
int i;
for (i = 0; i < env->n_regs; ++i) {
neigh_cols[i] = 0;
costs[i].col = i;
- costs[i].cost = bitset_is_set(node->adm_colors, i) ? node->constr_factor : 0.0;
+ costs[i].cost = bitset_is_set(node->adm_colors, i) ? node->constr_factor : REAL(0.0);
}
for (i = 0; i < node->n_neighs; ++i) {
if (is_loose(n)) {
++n_loose;
++neigh_cols[col];
- }
-
- else
- costs[col].cost = 0.0;
+ } else
+ costs[col].cost = REAL(0.0);
}
if (n_loose > 0) {
- coeff = 1.0 / n_loose;
+ coeff = REAL(1.0) / n_loose;
for (i = 0; i < env->n_regs; ++i)
- costs[i].cost *= 1.0 - coeff * neigh_cols[i];
+ costs[i].cost *= REAL(1.0) - coeff * neigh_cols[i];
}
}
determine_color_costs(env, node, costs);
/* Since the node must not have the not_col, set the costs for that color to "infinity" */
- costs[exclude_col].cost = 0.0;
+ costs[exclude_col].cost = REAL(0.0);
/* sort the colors according costs, cheapest first. */
qsort(costs, env->n_regs, sizeof(costs[0]), cmp_col_cost_gt);
int j;
/* If the costs for that color (and all successive) are infinite, bail out we won't make it anyway. */
- if (costs[i].cost == 0.0)
+ if (costs[i].cost == REAL(0.0))
return 0;
/* Set the new color of the node and mark the node as temporarily fixed. */
waitq *best_starts = NULL;
col_cost_t *order = alloca(env->n_regs * sizeof(order[0]));
bitset_t *visited;
- int idx, len, i;
+ int idx, len, i, nidx, pos;
struct list_head changed;
- bitset_pos_t pos;
DB((dbg, LEVEL_2, "fragmentizing chunk #%d", c->id));
DBG_AFF_CHUNK(env, LEVEL_2, c);
/* compute color preference */
memset(order, 0, env->n_regs * sizeof(order[0]));
- bitset_foreach (c->interfere, pos) {
- ir_node *n = get_idx_irn(env->co->irg, pos);
+ for (pos = 0, len = ARR_LEN(c->interfere); pos < len; ++pos) {
+ const ir_node *n = c->interfere[pos];
co_mst_irn_t *node = get_co_mst_irn(env, n);
aff_chunk_t *chunk = node->chunk;
- if (is_loose(node) && chunk && chunk->visited < env->chunk_visited && !chunk->deleted) {
+ if (is_loose(node) && chunk && chunk->visited < env->chunk_visited) {
+ assert(!chunk->deleted);
chunk->visited = env->chunk_visited;
++n_int_chunks;
}
for (i = 0; i < env->n_regs; ++i) {
- double dislike = n_int_chunks > 0 ? 1.0 - order[i].cost / n_int_chunks : 0.0;
+ real_t dislike = n_int_chunks > 0 ? REAL(1.0) - order[i].cost / n_int_chunks : REAL(0.0);
order[i].col = i;
- order[i].cost = (1.0 - dislike_influence) * c->color_affinity[i].cost + dislike_influence * dislike;
+ order[i].cost = (REAL(1.0) - dislike_influence) * c->color_affinity[i].cost + dislike_influence * dislike;
}
qsort(order, env->n_regs, sizeof(order[0]), cmp_col_cost_gt);
}
/* remove the nodes in best chunk from original chunk */
- bitset_andnot(c->nodes, best_chunk->nodes);
- for (idx = 0, len = ARR_LEN(c->n); idx < len; ++idx) {
- const ir_node *irn = c->n[idx];
+ len = ARR_LEN(best_chunk->n);
+ for (idx = 0; idx < len; ++idx) {
+ const ir_node *irn = best_chunk->n[idx];
+ int pos = nodes_bsearch(c->n, irn);
- if (bitset_is_set(best_chunk->nodes, get_irn_idx(irn))) {
- int last = ARR_LEN(c->n) - 1;
+ if (pos > 0)
+ c->n[pos] = NULL;
+ }
+ len = ARR_LEN(c->n);
+ for (idx = nidx = 0; idx < len; ++idx) {
+ const ir_node *irn = c->n[idx];
- c->n[idx] = c->n[last];
- ARR_SHRINKLEN(c->n, last);
- len--;
+ if (irn != NULL) {
+ c->n[nidx++] = irn;
}
}
+ ARR_SHRINKLEN(c->n, nidx);
+
/* we have to get the nodes back into the original chunk because they are scattered over temporary chunks */
for (idx = 0, len = ARR_LEN(c->n); idx < len; ++idx) {
/* fragment the remaining chunk */
visited = bitset_irg_malloc(env->co->irg);
- bitset_or(visited, best_chunk->nodes);
+ for (idx = 0, len = ARR_LEN(best_chunk->n); idx < len; ++idx)
+ bitset_set(visited, get_irn_idx(best_chunk->n[idx]));
+
for (idx = 0, len = ARR_LEN(c->n); idx < len; ++idx) {
const ir_node *irn = c->n[idx];
if (! bitset_is_set(visited, get_irn_idx(irn))) {
mst_env.single_cols[i] = vec;
for (j = 0; j < n_regs; ++j) {
vec[j].col = j;
- vec[j].cost = 0.0;
+ vec[j].cost = REAL(0.0);
}
vec[i].col = 0;
vec[0].col = i;
- vec[0].cost = 1.0;
+ vec[0].cost = REAL(1.0);
}
DBG((dbg, LEVEL_1, "==== Coloring %+F, class %s ====\n", co->irg, co->cls->name));
/* apply coloring */
foreach_phase_irn(&mst_env.ph, irn) {
- co_mst_irn_t *mirn = get_co_mst_irn(&mst_env, irn);
+ co_mst_irn_t *mirn;
const arch_register_t *reg;
if (arch_irn_is(mst_env.aenv, irn, ignore))
continue;
+ mirn = get_co_mst_irn(&mst_env, irn);
// assert(mirn->fixed && "Node should have fixed color");
/* skip nodes where color hasn't changed */
projects / libfirm / blobdiff