* and the qnode is reinserted in the queue. The first qnode colored without
* conflicts is the best one.
*/
-#ifdef HAVE_CONFIG_H
#include "config.h"
-#endif
#include "debug.h"
#include "bitset.h"
#include "becopyopt_t.h"
#include "becopystat.h"
#include "beintlive_t.h"
-#include "beirg_t.h"
+#include "beirg.h"
+#include "bemodule.h"
DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL;)
static pset *pinned_global; /**< optimized nodes should not be altered any more */
-static INLINE int nodes_interfere(const be_chordal_env_t *env, const ir_node *a, const ir_node *b)
+static inline int nodes_interfere(const be_chordal_env_t *env, const ir_node *a, const ir_node *b)
{
if (env->ifg)
return be_ifg_connected(env->ifg, a, b);
else
- return values_interfere(env->birg, a, b);
+ return be_values_interfere(env->birg->lv, a, b);
}
-static int set_cmp_conflict_t(const void *x, const void *y, size_t size) {
+static int set_cmp_conflict_t(const void *x, const void *y, size_t size)
+{
const conflict_t *xx = x;
const conflict_t *yy = y;
(void) size;
* If a local pinned conflict occurs, a new edge in the conflict graph is added.
* The next maximum independent set build, will regard it.
*/
-static INLINE void qnode_add_conflict(const qnode_t *qn, const ir_node *n1, const ir_node *n2) {
+static inline void qnode_add_conflict(const qnode_t *qn, const ir_node *n1, const ir_node *n2)
+{
conflict_t c;
DBG((dbg, LEVEL_4, "\t %+F -- %+F\n", n1, n2));
/**
* Checks if two nodes are in a conflict.
*/
-static INLINE int qnode_are_conflicting(const qnode_t *qn, const ir_node *n1, const ir_node *n2) {
+static inline int qnode_are_conflicting(const qnode_t *qn, const ir_node *n1, const ir_node *n2)
+{
conflict_t c;
/* search for live range interference */
if (n1!=n2 && nodes_interfere(qn->ou->co->cenv, n1, n2))
return set_find(qn->conflicts, &c, sizeof(c), HASH_CONFLICT(c)) != 0;
}
-static int set_cmp_node_stat_t(const void *x, const void *y, size_t size) {
+static int set_cmp_node_stat_t(const void *x, const void *y, size_t size)
+{
(void) size;
return ((const node_stat_t*)x)->irn != ((const node_stat_t*)y)->irn;
}
/**
* Finds a node status entry of a node if existent. Otherwise return NULL
*/
-static INLINE const node_stat_t *qnode_find_node(const qnode_t *qn, ir_node *irn) {
+static inline const node_stat_t *qnode_find_node(const qnode_t *qn, ir_node *irn)
+{
node_stat_t find;
find.irn = irn;
return set_find(qn->changed_nodes, &find, sizeof(find), hash_irn(irn));
* Finds a node status entry of a node if existent. Otherwise it will return
* an initialized new entry for this node.
*/
-static INLINE node_stat_t *qnode_find_or_insert_node(const qnode_t *qn, ir_node *irn) {
+static inline node_stat_t *qnode_find_or_insert_node(const qnode_t *qn, ir_node *irn)
+{
node_stat_t find;
find.irn = irn;
find.new_color = NO_COLOR;
/**
* Returns the virtual color of a node if set before, else returns the real color.
*/
-static INLINE int qnode_get_new_color(const qnode_t *qn, ir_node *irn) {
+static inline int qnode_get_new_color(const qnode_t *qn, ir_node *irn)
+{
const node_stat_t *found = qnode_find_node(qn, irn);
if (found)
return found->new_color;
/**
* Sets the virtual color of a node.
*/
-static INLINE void qnode_set_new_color(const qnode_t *qn, ir_node *irn, int color) {
+static inline void qnode_set_new_color(const qnode_t *qn, ir_node *irn, int color)
+{
node_stat_t *found = qnode_find_or_insert_node(qn, irn);
found->new_color = color;
DBG((dbg, LEVEL_3, "\t col(%+F) := %d\n", irn, color));
* to the same optimization unit and has been optimized before the current
* processed node.
*/
-static INLINE int qnode_is_pinned_local(const qnode_t *qn, ir_node *irn) {
+static inline int qnode_is_pinned_local(const qnode_t *qn, ir_node *irn)
+{
const node_stat_t *found = qnode_find_node(qn, irn);
if (found)
return found->pinned_local;
* Local-pins a node, so optimizations of further nodes of the same opt unit
* can handle situations in which a color change would undo prior optimizations.
*/
-static INLINE void qnode_pin_local(const qnode_t *qn, ir_node *irn) {
+static inline void qnode_pin_local(const qnode_t *qn, ir_node *irn)
+{
node_stat_t *found = qnode_find_or_insert_node(qn, irn);
found->pinned_local = 1;
if (found->new_color == NO_COLOR)
* Else the first conflicting ir_node encountered is returned.
*
*/
-static ir_node *qnode_color_irn(const qnode_t *qn, ir_node *irn, int col, const ir_node *trigger) {
+static ir_node *qnode_color_irn(const qnode_t *qn, ir_node *irn, int col, const ir_node *trigger)
+{
copy_opt_t *co = qn->ou->co;
const be_chordal_env_t *chordal_env = co->cenv;
const arch_register_class_t *cls = co->cls;
bitset_flip_all(free_cols);
/* Exclude colors not assignable to the irn */
- req = arch_get_register_req(irn, -1);
+ req = arch_get_register_req_out(irn);
if (arch_register_req_is(req, limited)) {
bitset_t *limited = bitset_alloca(cls->n_regs);
rbitset_copy_to_bitset(req->limited, limited);
#endif /* SEARCH_FREE_COLORS */
/* If target color is not allocatable changing color is impossible */
- if (!arch_reg_is_allocatable(irn, -1, arch_register_for_index(cls, col))) {
+ if (!arch_reg_out_is_allocatable(irn, arch_register_for_index(cls, col))) {
DBG((dbg, LEVEL_3, "\t %+F impossible\n", irn));
return CHANGE_IMPOSSIBLE;
}
* @returns 1 iff all members colors could be set
* 0 else
*/
-static int qnode_try_color(const qnode_t *qn) {
+static int qnode_try_color(const qnode_t *qn)
+{
int i;
for (i=0; i<qn->mis_size; ++i) {
ir_node *test_node, *confl_node;
* Determines a maximum weighted independent set with respect to
* the interference and conflict edges of all nodes in a qnode.
*/
-static INLINE void qnode_max_ind_set(qnode_t *qn, const unit_t *ou) {
+static inline void qnode_max_ind_set(qnode_t *qn, const unit_t *ou)
+{
ir_node **safe, **unsafe;
int i, o, safe_count, safe_costs, unsafe_count, *unsafe_costs;
bitset_t *curr, *best;
- bitset_pos_t pos;
- int max, next, curr_weight, best_weight = 0;
+ unsigned pos;
+ int next, curr_weight, best_weight = 0;
/* assign the nodes into two groups.
* safe: node has no interference, hence it is in every max stable set.
* unsafe: node has an interference
*/
- safe = alloca((ou->node_count-1) * sizeof(*safe));
- safe_costs = 0;
- safe_count = 0;
- unsafe = alloca((ou->node_count-1) * sizeof(*unsafe));
- unsafe_costs = alloca((ou->node_count-1) * sizeof(*unsafe_costs));
+ safe = ALLOCAN(ir_node*, ou->node_count - 1);
+ safe_costs = 0;
+ safe_count = 0;
+ unsafe = ALLOCAN(ir_node*, ou->node_count - 1);
+ unsafe_costs = ALLOCAN(int, ou->node_count - 1);
unsafe_count = 0;
- for(i=1; i<ou->node_count; ++i) {
+ for (i=1; i<ou->node_count; ++i) {
int is_safe = 1;
- for(o=1; o<ou->node_count; ++o) {
+ for (o=1; o<ou->node_count; ++o) {
if (qnode_are_conflicting(qn, ou->nodes[i], ou->nodes[o])) {
if (i!=o) {
unsafe_costs[unsafe_count] = ou->costs[i];
/* Exact Algorithm: Brute force */
curr = bitset_alloca(unsafe_count);
bitset_set_all(curr);
- while ((max = bitset_popcnt(curr)) != 0) {
+ while (!bitset_is_empty(curr)) {
/* check if curr is a stable set */
for (i=bitset_next_set(curr, 0); i!=-1; i=bitset_next_set(curr, i+1))
for (o=bitset_next_set(curr, i); o!=-1; o=bitset_next_set(curr, o+1)) /* !!!!! difference to ou_max_ind_set_costs(): NOT (curr, i+1) */
}
/* transfer the best set into the qn */
- qn->mis_size = 1+safe_count+bitset_popcnt(best);
+ qn->mis_size = 1+safe_count+bitset_popcount(best);
qn->mis_costs = safe_costs+best_weight;
qn->mis[0] = ou->nodes[0]; /* the root is always in a max stable set */
next = 1;
/**
* Creates a new qnode
*/
-static INLINE qnode_t *new_qnode(const unit_t *ou, int color) {
+static inline qnode_t *new_qnode(const unit_t *ou, int color)
+{
qnode_t *qn = XMALLOC(qnode_t);
qn->ou = ou;
qn->color = color;
/**
* Frees space used by a queue node
*/
-static INLINE void free_qnode(qnode_t *qn) {
+static inline void free_qnode(qnode_t *qn)
+{
del_set(qn->conflicts);
del_set(qn->changed_nodes);
xfree(qn->mis);
* Inserts a qnode in the sorted queue of the optimization unit. Queue is
* ordered by field 'size' (the size of the mis) in decreasing order.
*/
-static INLINE void ou_insert_qnode(unit_t *ou, qnode_t *qn) {
+static inline void ou_insert_qnode(unit_t *ou, qnode_t *qn)
+{
struct list_head *lh;
if (qnode_are_conflicting(qn, ou->nodes[0], ou->nodes[0])) {
* case for approximately 80% of all phi classes and 100% of register constrained
* nodes. (All other phi classes are reduced to this case.)
*/
-static void ou_optimize(unit_t *ou) {
- int i;
- qnode_t *curr = NULL, *tmp;
- const arch_register_class_t *cls = ou->co->cls;
- bitset_pos_t idx;
- bitset_t *pos_regs = bitset_alloca(cls->n_regs);
+static void ou_optimize(unit_t *ou)
+{
+ qnode_t *curr = NULL;
+ qnode_t *tmp;
+ const arch_register_req_t *req;
+ bitset_t const* ignore;
+ unsigned n_regs;
+ unsigned idx;
+ int i;
DBG((dbg, LEVEL_1, "\tOptimizing unit:\n"));
for (i=0; i<ou->node_count; ++i)
/* init queue */
INIT_LIST_HEAD(&ou->queue);
- arch_get_allocatable_regs(ou->nodes[0], -1, pos_regs);
+ req = arch_get_register_req_out(ou->nodes[0]);
+ ignore = ou->co->cenv->ignore_colors;
+ n_regs = req->cls->n_regs;
+ if (arch_register_req_is(req, limited)) {
+ unsigned const* limited = req->limited;
- /* exclude ignore colors */
- bitset_andnot(pos_regs, ou->co->cenv->ignore_colors);
+ for (idx = 0; idx != n_regs; ++idx) {
+ if (bitset_is_set(ignore, idx))
+ continue;
+ if (!rbitset_is_set(limited, idx))
+ continue;
- assert(bitset_popcnt(pos_regs) != 0 && "No register is allowed for this node !!?");
+ ou_insert_qnode(ou, new_qnode(ou, idx));
+ }
+ } else {
+ for (idx = 0; idx != n_regs; ++idx) {
+ if (bitset_is_set(ignore, idx))
+ continue;
- /* create new qnode */
- bitset_foreach(pos_regs, idx)
- ou_insert_qnode(ou, new_qnode(ou, idx));
+ ou_insert_qnode(ou, new_qnode(ou, idx));
+ }
+ }
/* search best */
for (;;) {
free_qnode(curr);
}
-int co_solve_heuristic(copy_opt_t *co) {
+/**
+ * Solves the problem using a heuristic approach
+ * Uses the OU data structure
+ */
+int co_solve_heuristic(copy_opt_t *co)
+{
unit_t *curr;
- FIRM_DBG_REGISTER(dbg, "ir.be.copyoptheur");
ASSERT_OU_AVAIL(co);
del_pset(pinned_global);
return 0;
}
+
+BE_REGISTER_MODULE_CONSTRUCTOR(be_init_copyheur);
+void be_init_copyheur(void)
+{
+ static co_algo_info copyheur = {
+ co_solve_heuristic, 0
+ };
+
+ be_register_copyopt("heur1", ©heur);
+ FIRM_DBG_REGISTER(dbg, "ir.be.copyoptheur");
+}
projects / libfirm / blobdiff