* @brief Block-scheduling strategies.
* @author Matthias Braun, Christoph Mallon
* @date 27.09.2006
- * @version $Id$
*
* The goals of the greedy (and ILP) algorithm here works by assuming that
* we want to change as many jumps to fallthroughs as possible (executed jumps
int blockcount;
};
+static blocksched_entry_t* get_blocksched_entry(const ir_node *block)
+{
+ return (blocksched_entry_t*)get_irn_link(block);
+}
+
/**
* Collect cfg frequencies of all edges between blocks.
* Also determines edge with highest frequency.
}
}
+static int cmp_edges_base(const edge_t *e1, const edge_t *e2)
+{
+ long nr1 = get_irn_node_nr(e1->block);
+ long nr2 = get_irn_node_nr(e2->block);
+ if (nr1 < nr2) {
+ return 1;
+ } else if (nr1 > nr2) {
+ return -1;
+ } else {
+ if (e1->pos < e2->pos) {
+ return 1;
+ } else if (e1->pos > e2->pos) {
+ return -1;
+ } else {
+ return 0;
+ }
+ }
+}
+
static int cmp_edges(const void *d1, const void *d2)
{
const edge_t *e1 = (const edge_t*)d1;
const edge_t *e2 = (const edge_t*)d2;
-
- return QSORT_CMP(e2->execfreq, e1->execfreq);
+ double freq1 = e1->execfreq;
+ double freq2 = e2->execfreq;
+ if (freq1 < freq2) {
+ return 1;
+ } else if (freq1 > freq2) {
+ return -1;
+ } else {
+ return cmp_edges_base(e1, e2);
+ }
}
static int cmp_edges_outedge_penalty(const void *d1, const void *d2)
{
- const edge_t *e1 = (const edge_t*)d1;
- const edge_t *e2 = (const edge_t*)d2;
- /* reverse sorting as penalties are negative */
- return QSORT_CMP(e1->outedge_penalty_freq, e2->outedge_penalty_freq);
+ const edge_t *e1 = (const edge_t*)d1;
+ const edge_t *e2 = (const edge_t*)d2;
+ double pen1 = e1->outedge_penalty_freq;
+ double pen2 = e2->outedge_penalty_freq;
+ if (pen1 > pen2) {
+ return 1;
+ } else if (pen1 < pen2) {
+ return -1;
+ } else {
+ return cmp_edges_base(e1, e2);
+ }
}
static void clear_loop_links(ir_loop *loop)
continue;
pred_block = get_Block_cfgpred_block(block, pos);
- entry = (blocksched_entry_t*)get_irn_link(block);
- pred_entry = (blocksched_entry_t*)get_irn_link(pred_block);
+ entry = get_blocksched_entry(block);
+ pred_entry = get_blocksched_entry(pred_block);
if (pred_entry->next != NULL || entry->prev != NULL)
continue;
continue;
pred_block = get_Block_cfgpred_block(block, pos);
- entry = (blocksched_entry_t*)get_irn_link(block);
- pred_entry = (blocksched_entry_t*)get_irn_link(pred_block);
+ entry = get_blocksched_entry(block);
+ pred_entry = get_blocksched_entry(pred_block);
if (pred_entry->next != NULL || entry->prev != NULL)
continue;
continue;
pred_block = get_Block_cfgpred_block(block, pos);
- entry = (blocksched_entry_t*)get_irn_link(block);
- pred_entry = (blocksched_entry_t*)get_irn_link(pred_block);
+ entry = get_blocksched_entry(block);
+ pred_entry = get_blocksched_entry(pred_block);
/* is 1 of the blocks already attached to another block? */
if (pred_entry->next != NULL || entry->prev != NULL)
ir_node *block = entry->block;
ir_node *succ = NULL;
blocksched_entry_t *succ_entry;
- const ir_edge_t *edge;
- double best_succ_execfreq;
+ double best_succ_execfreq;
if (irn_visited_else_mark(block))
return;
/* we only need to put the first of a series of already connected
* blocks into the worklist */
- succ_entry = (blocksched_entry_t*)get_irn_link(succ_block);
+ succ_entry = get_blocksched_entry(succ_block);
while (succ_entry->prev != NULL) {
/* break cycles... */
if (succ_entry->prev->block == succ_block) {
if (irn_visited(succ_block))
continue;
- succ_entry = (blocksched_entry_t*)get_irn_link(succ_block);
+ succ_entry = get_blocksched_entry(succ_block);
if (succ_entry->prev != NULL)
continue;
} while (irn_visited(succ));
}
- succ_entry = (blocksched_entry_t*)get_irn_link(succ);
+ succ_entry = get_blocksched_entry(succ);
entry->next = succ_entry;
succ_entry->prev = entry;
{
ir_graph *irg = env->irg;
ir_node *startblock = get_irg_start_block(irg);
- blocksched_entry_t *entry = (blocksched_entry_t*)get_irn_link(startblock);
+ blocksched_entry_t *entry = get_blocksched_entry(startblock);
ir_reserve_resources(irg, IR_RESOURCE_IRN_VISITED);
inc_irg_visited(irg);
static void collect_egde_frequency_ilp(ir_node *block, void *data)
{
- blocksched_ilp_env_t *env = data;
+ blocksched_ilp_env_t *env = (blocksched_ilp_env_t*)data;
ir_graph *irg = env->env.irg;
ir_node *startblock = get_irg_start_block(irg);
int arity;
- lpp_cst_t cst;
char name[64];
int out_count;
blocksched_ilp_entry_t *entry;
}
else {
int i;
+ int cst_idx;
snprintf(name, sizeof(name), "block_in_constr_%ld", get_irn_node_nr(block));
- cst = lpp_add_cst_uniq(env->lpp, name, lpp_greater_equal, arity - 1);
+ cst_idx = lpp_add_cst_uniq(env->lpp, name, lpp_greater_equal, arity - 1);
for (i = 0; i < arity; ++i) {
double execfreq;
execfreq = get_block_execfreq(env->env.execfreqs, pred_block);
edgenum = add_ilp_edge(block, i, execfreq, env);
edge = &env->ilpedges[edgenum];
- lpp_set_factor_fast(env->lpp, cst, edge->ilpvar, 1.0);
+ lpp_set_factor_fast(env->lpp, cst_idx, edge->ilpvar, 1.0);
}
}
}
+static blocksched_ilp_entry_t *get_blocksched_ilp_entry(const ir_node *block)
+{
+ return (blocksched_ilp_entry_t*)get_irn_link(block);
+}
static void coalesce_blocks_ilp(blocksched_ilp_env_t *env)
{
int edge_count = ARR_LEN(env->ilpedges);
- be_options_t *options = be_get_irg_options(env->env.irg);
int i;
/* complete out constraints */
continue;
pred = get_Block_cfgpred_block(block, edge->pos);
- entry = get_irn_link(pred);
+ entry = get_blocksched_ilp_entry(pred);
DB((dbg, LEVEL_1, "Adding out cst to %+F from %+F,%d\n",
pred, block, edge->pos));
lpp_set_factor_fast(env->lpp, entry->out_cst, edge->ilpvar, 1.0);
}
- lpp_solve_net(env->lpp, options->ilp_server, options->ilp_solver);
+ lpp_solve_net(env->lpp, be_options.ilp_server, be_options.ilp_solver);
assert(lpp_is_sol_valid(env->lpp));
/* Apply results to edges */
continue;
pred = get_Block_cfgpred_block(block, edge->pos);
- entry = get_irn_link(block);
- pred_entry = get_irn_link(pred);
+ entry = get_blocksched_entry(block);
+ pred_entry = get_blocksched_entry(pred);
assert(entry->prev == NULL && pred_entry->next == NULL);
entry->prev = pred_entry;
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