#include "beutil.h"
#include "besched.h"
-#include "besched_t.h"
+#include "besched.h"
#include "belive_t.h"
-#include "benode_t.h"
-#include "bearch_t.h"
+#include "benode.h"
+#include "bearch.h"
#include "beirgmod.h"
#include "beifg.h"
#include "beinsn_t.h"
#include "bestatevent.h"
-#include "beirg_t.h"
+#include "beirg.h"
#include "beintlive_t.h"
#include "bera.h"
#include "bechordal_t.h"
#include "bechordal_draw.h"
#include "bemodule.h"
+#include "bearch.h"
+#include "bechordal_common.h"
DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL;)
-#define NO_COLOR (-1)
-
#define DUMP_INTERVALS
-typedef struct _be_chordal_alloc_env_t {
+typedef struct be_chordal_alloc_env_t {
be_chordal_env_t *chordal_env;
pset *pre_colored; /**< Set of precolored nodes. */
- bitset_t *live; /**< A liveness bitset. */
+ bitset_t *live; /**< A liveness bitset. */
bitset_t *tmp_colors; /**< An auxiliary bitset which is as long as the number of colors in the class. */
- bitset_t *colors; /**< The color mask. */
+ 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')
-
-#if 0
-static void check_border_list(struct list_head *head)
-{
- border_t *x;
- list_for_each_entry(border_t, x, head, list) {
- assert(x->magic == BORDER_FOURCC);
- }
-}
-
-static void check_heads(be_chordal_env_t *env)
-{
- pmap_entry *ent;
- for(ent = pmap_first(env->border_heads); ent; ent = pmap_next(env->border_heads)) {
- /* ir_printf("checking border list of block %+F\n", ent->key); */
- check_border_list(ent->value);
- }
-}
-#endif
-
-/**
- * Add an interval border to the list of a block's list
- * of interval border.
- * @note You always have to create the use before the def.
- * @param env The environment.
- * @param head The list head to enqueue the borders.
- * @param irn The node (value) the border belongs to.
- * @param pressure The pressure at this point in time.
- * @param step A time step for the border.
- * @param is_def Is the border a use or a def.
- * @return The created border.
- */
-static inline border_t *border_add(be_chordal_env_t *env, struct list_head *head,
- ir_node *irn, unsigned step, unsigned pressure,
- unsigned is_def, unsigned is_real)
-{
- border_t *b;
-
- if(!is_def) {
- border_t *def;
-
- b = obstack_alloc(env->obst, sizeof(*b));
-
- /* also allocate the def and tie it to the use. */
- def = obstack_alloc(env->obst, sizeof(*def));
- memset(def, 0, sizeof(*def));
- b->other_end = def;
- def->other_end = b;
-
- /*
- * Set the link field of the irn to the def.
- * This strongly relies on the fact, that the use is always
- * made before the def.
- */
- set_irn_link(irn, def);
-
- DEBUG_ONLY(b->magic = BORDER_FOURCC);
- DEBUG_ONLY(def->magic = BORDER_FOURCC);
- }
-
- /*
- * If the def is encountered, the use was made and so was the
- * the def node (see the code above). It was placed into the
- * link field of the irn, so we can get it there.
- */
- else {
- b = get_irn_link(irn);
-
- DEBUG_ONLY(assert(b && b->magic == BORDER_FOURCC && "Illegal border encountered"));
- }
-
- b->pressure = pressure;
- b->is_def = is_def;
- b->is_real = is_real;
- b->irn = irn;
- b->step = step;
- list_add_tail(&b->list, head);
- DBG((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_consider_in_reg_alloc(env->cls, irn);
-}
-
static int get_next_free_reg(const be_chordal_alloc_env_t *alloc_env, bitset_t *colors)
{
bitset_t *tmp = alloc_env->tmp_colors;
bitset_copy(tmp, colors);
- bitset_or(tmp, alloc_env->chordal_env->ignore_colors);
- return bitset_next_clear(tmp, 0);
+ bitset_flip_all(tmp);
+ bitset_and(tmp, alloc_env->chordal_env->allocatable_regs);
+ return bitset_next_set(tmp, 0);
}
static bitset_t *get_decisive_partner_regs(bitset_t *bs, const be_operand_t *o1, const be_operand_t *o2)
{
bitset_t *res = bs;
- if(!o1) {
+ if (!o1) {
bitset_copy(bs, o2->regs);
return bs;
}
- if(!o2) {
+ if (!o2) {
bitset_copy(bs, o1->regs);
return bs;
}
assert(o1->req->cls == o2->req->cls || ! o1->req->cls || ! o2->req->cls);
- if(bitset_contains(o1->regs, o2->regs))
+ if (bitset_contains(o1->regs, o2->regs)) {
bitset_copy(bs, o1->regs);
- else if(bitset_contains(o2->regs, o1->regs))
+ } else if (bitset_contains(o2->regs, o1->regs)) {
bitset_copy(bs, o2->regs);
- else
+ } else {
res = NULL;
-
- return res;
-}
-
-static be_insn_t *chordal_scan_insn(be_chordal_env_t *env, ir_node *irn)
-{
- be_insn_env_t ie;
-
- ie.ignore_colors = env->ignore_colors;
- ie.obst = env->obst;
- ie.cls = env->cls;
- return be_scan_insn(&ie, irn);
-}
-
-static ir_node *prepare_constr_insn(be_chordal_env_t *env, ir_node *irn)
-{
- bitset_t *tmp = bitset_alloca(env->cls->n_regs);
- bitset_t *def_constr = bitset_alloca(env->cls->n_regs);
- ir_node *bl = get_nodes_block(irn);
- const be_irg_t *birg = env->birg;
- be_lv_t *lv = birg->lv;
-
- be_insn_t *insn;
- int i, j;
-
- for (i = get_irn_arity(irn) - 1; i >= 0; --i) {
- ir_node *op = get_irn_n(irn, i);
- ir_node *copy;
- const arch_register_t *reg;
- const arch_register_req_t *req;
-
- req = arch_get_register_req(irn, i);
- if (req->cls != env->cls)
- continue;
-
- reg = arch_get_irn_register(op);
-
- if (reg == NULL || !arch_register_type_is(reg, ignore))
- continue;
- if(arch_register_type_is(reg, joker))
- continue;
-
- if (!arch_register_req_is(req, limited))
- continue;
-
- if (rbitset_is_set(req->limited, reg->index))
- continue;
-
- copy = be_new_Copy(env->cls, env->irg, bl, op);
- be_stat_ev("constr_copy", 1);
-
- sched_add_before(irn, copy);
- set_irn_n(irn, i, copy);
- DBG((dbg, LEVEL_3, "inserting ignore arg copy %+F for %+F pos %d\n", copy, irn, i));
- }
-
- insn = chordal_scan_insn(env, irn);
-
- if(!insn->has_constraints)
- goto end;
-
- /* insert copies for nodes that occur constrained more than once. */
- for(i = insn->use_start; i < insn->n_ops; ++i) {
- be_operand_t *op = &insn->ops[i];
-
- if(!op->has_constraints)
- continue;
-
- for(j = i + 1; j < insn->n_ops; ++j) {
- ir_node *copy;
- be_operand_t *a_op = &insn->ops[j];
-
- if(a_op->carrier != op->carrier || !a_op->has_constraints)
- continue;
-
- /* if the constraint is the same, no copy is necessary
- * TODO generalise unequal but overlapping constraints */
- if (a_op->req == op->req)
- continue;
-
- if (be_is_Copy(get_irn_n(insn->irn, a_op->pos)))
- continue;
-
- copy = be_new_Copy(env->cls, env->irg, bl, op->carrier);
- be_stat_ev("constr_copy", 1);
-
- sched_add_before(insn->irn, copy);
- set_irn_n(insn->irn, a_op->pos, copy);
- DBG((dbg, LEVEL_3, "inserting multiple constr copy %+F for %+F pos %d\n", copy, insn->irn, a_op->pos));
- }
- }
-
- /* collect all registers occurring in out constraints. */
- for(i = 0; i < insn->use_start; ++i) {
- be_operand_t *op = &insn->ops[i];
- if(op->has_constraints)
- bitset_or(def_constr, op->regs);
}
- /*
- insert copies for all constrained arguments living through the node
- and being constrained to a register which also occurs in out constraints.
- */
- for(i = insn->use_start; i < insn->n_ops; ++i) {
- ir_node *copy;
- be_operand_t *op = &insn->ops[i];
-
- bitset_copy(tmp, op->regs);
- bitset_and(tmp, def_constr);
-
- /*
- Check, if
- 1) the operand is constrained.
- 2) lives through the node.
- 3) is constrained to a register occurring in out constraints.
- */
- if(!op->has_constraints ||
- !values_interfere(birg, insn->irn, op->carrier) ||
- bitset_popcnt(tmp) == 0)
- continue;
-
- /*
- only create the copy if the operand is no copy.
- this is necessary since the assure constraints phase inserts
- Copies and Keeps for operands which must be different from the
- results. Additional copies here would destroy this.
- */
- if (be_is_Copy(get_irn_n(insn->irn, op->pos)))
- continue;
-
- copy = be_new_Copy(env->cls, env->irg, bl, op->carrier);
-
- sched_add_before(insn->irn, copy);
- set_irn_n(insn->irn, op->pos, copy);
- DBG((dbg, LEVEL_3, "inserting constr copy %+F for %+F pos %d\n", copy, insn->irn, op->pos));
- be_liveness_update(lv, op->carrier);
- }
-
-end:
- obstack_free(env->obst, insn);
- return insn->next_insn;
-}
-
-static void pre_spill_prepare_constr_walker(ir_node *bl, void *data)
-{
- be_chordal_env_t *env = data;
- ir_node *irn;
- for(irn = sched_first(bl); !sched_is_end(irn);) {
- irn = prepare_constr_insn(env, irn);
- }
-}
-
-void be_pre_spill_prepare_constr(be_chordal_env_t *cenv) {
- irg_block_walk_graph(cenv->irg, pre_spill_prepare_constr_walker, NULL, (void *) cenv);
+ return res;
}
static void pair_up_operands(const be_chordal_alloc_env_t *alloc_env, be_insn_t *insn)
int j;
/*
- For each out operand, try to find an in operand which can be assigned the
- same register as the out operand.
- */
+ * For each out operand, try to find an in operand which can be assigned the
+ * same register as the out operand.
+ */
for (j = 0; j < insn->use_start; ++j) {
- int smallest = -1;
- int smallest_n_regs = 2 * env->cls->n_regs + 1;
- be_operand_t *out_op = &insn->ops[j];
+ be_operand_t *smallest = NULL;
+ int smallest_n_regs = env->cls->n_regs + 1;
+ be_operand_t *out_op = &insn->ops[j];
/* Try to find an in operand which has ... */
- for(i = insn->use_start; i < insn->n_ops; ++i) {
- int n_total;
- const be_operand_t *op = &insn->ops[i];
+ for (i = insn->use_start; i < insn->n_ops; ++i) {
+ int n_total;
+ be_operand_t *op = &insn->ops[i];
+ be_lv_t *lv;
if (op->partner != NULL)
continue;
- if (values_interfere(env->birg, op->irn, op->carrier))
+ lv = be_get_irg_liveness(env->irg);
+ if (be_values_interfere(lv, op->irn, op->carrier))
continue;
- bitset_clear_all(bs);
bitset_copy(bs, op->regs);
bitset_and(bs, out_op->regs);
- n_total = bitset_popcnt(op->regs) + bitset_popcnt(out_op->regs);
+ n_total = bitset_popcount(op->regs);
- if (bitset_popcnt(bs) > 0 && n_total < smallest_n_regs) {
- smallest = i;
+ if (!bitset_is_empty(bs) && n_total < smallest_n_regs) {
+ smallest = op;
smallest_n_regs = n_total;
}
}
- if (smallest >= 0) {
- be_operand_t *partner = &insn->ops[smallest];
- for(i = insn->use_start; i < insn->n_ops; ++i) {
- if(insn->ops[i].carrier == partner->carrier)
+ if (smallest != NULL) {
+ for (i = insn->use_start; i < insn->n_ops; ++i) {
+ if (insn->ops[i].carrier == smallest->carrier)
insn->ops[i].partner = out_op;
}
- out_op->partner = partner;
- partner->partner = out_op;
- }
- }
-}
-
-
-static ir_node *pre_process_constraints(be_chordal_alloc_env_t *alloc_env,
- be_insn_t **the_insn)
-{
- be_chordal_env_t *env = alloc_env->chordal_env;
- be_insn_t *insn = *the_insn;
- ir_node *perm = NULL;
- bitset_t *out_constr = bitset_alloca(env->cls->n_regs);
- const ir_edge_t *edge;
- int i;
-
- assert(insn->has_constraints && "only do this for constrained nodes");
-
- /*
- Collect all registers that occur in output constraints.
- This is necessary, since if the insn has one of these as an input constraint
- and the corresponding operand interferes with the insn, the operand must
- be copied.
- */
- for(i = 0; i < insn->use_start; ++i) {
- be_operand_t *op = &insn->ops[i];
- if(op->has_constraints)
- bitset_or(out_constr, op->regs);
- }
-
- /*
- Make the Perm, recompute liveness and re-scan the insn since the
- in operands are now the Projs of the Perm.
- */
- perm = insert_Perm_after(env->birg, env->cls, sched_prev(insn->irn));
-
- /* Registers are propagated by insert_Perm_after(). Clean them here! */
- if(perm == NULL)
- return NULL;
-
- be_stat_ev("constr_perm", get_irn_arity(perm));
- foreach_out_edge(perm, edge) {
- ir_node *proj = get_edge_src_irn(edge);
- arch_set_irn_register(proj, NULL);
- }
-
- /*
- We also have to re-build the insn since the input operands are now the Projs of
- the Perm. Recomputing liveness is also a good idea if a Perm is inserted, since
- the live sets may change.
- */
- obstack_free(env->obst, insn);
- *the_insn = insn = chordal_scan_insn(env, insn->irn);
-
- /*
- Copy the input constraints of the insn to the Perm as output
- constraints. Succeeding phases (coalescing) will need that.
- */
- for(i = insn->use_start; i < insn->n_ops; ++i) {
- be_operand_t *op = &insn->ops[i];
- ir_node *proj = op->carrier;
- /*
- Note that the predecessor must not be a Proj of the Perm,
- since ignore-nodes are not Perm'ed.
- */
- if(op->has_constraints && is_Proj(proj) && get_Proj_pred(proj) == perm) {
- be_set_constr_limited(perm, BE_OUT_POS(get_Proj_proj(proj)), op->req);
+ out_op->partner = smallest;
+ smallest->partner = out_op;
}
}
-
- return perm;
}
static ir_node *handle_constraints(be_chordal_alloc_env_t *alloc_env,
- ir_node *irn, int *silent)
+ ir_node *irn)
{
int n_regs;
bitset_t *bs;
int *assignment;
pmap *partners;
int i, n_alloc;
- bitset_pos_t col;
+ size_t col;
const ir_edge_t *edge;
ir_node *perm = NULL;
//int match_res, cost;
void *base = obstack_base(env->obst);
be_insn_t *insn = chordal_scan_insn(env, irn);
ir_node *res = insn->next_insn;
- int be_silent = *silent;
- be_irg_t *birg = env->birg;
bipartite_t *bp;
- if(insn->pre_colored) {
+ if (insn->pre_colored) {
int i;
- for(i = 0; i < insn->use_start; ++i)
+ for (i = 0; i < insn->use_start; ++i)
pset_insert_ptr(alloc_env->pre_colored, insn->ops[i].carrier);
}
/*
- If the current node is a barrier toggle the silent flag.
- If we are in the start block, we are ought to be silent at the beginning,
- so the toggling activates the constraint handling but skips the barrier.
- If we are in the end block we handle the in requirements of the barrier
- and set the rest to silent.
- */
- if(be_is_Barrier(irn))
- *silent = !*silent;
-
- if(be_silent)
- goto end;
-
- /*
- Perms inserted before the constraint handling phase are considered to be
- correctly precolored. These Perms arise during the ABI handling phase.
- */
- if(!insn->has_constraints)
+ * Perms inserted before the constraint handling phase are considered to be
+ * correctly precolored. These Perms arise during the ABI handling phase.
+ */
+ if (!insn->has_constraints)
goto end;
n_regs = env->cls->n_regs;
partners = pmap_create();
/*
- prepare the constraint handling of this node.
- Perms are constructed and Copies are created for constrained values
- interfering with the instruction.
- */
- perm = pre_process_constraints(alloc_env, &insn);
+ * prepare the constraint handling of this node.
+ * Perms are constructed and Copies are created for constrained values
+ * interfering with the instruction.
+ */
+ perm = pre_process_constraints(alloc_env->chordal_env, &insn);
/* find suitable in operands to the out operands of the node. */
pair_up_operands(alloc_env, insn);
/*
- look at the in/out operands and add each operand (and its possible partner)
- to a bipartite graph (left: nodes with partners, right: admissible colors).
- */
- for(i = 0, n_alloc = 0; i < insn->n_ops; ++i) {
+ * look at the in/out operands and add each operand (and its possible partner)
+ * to a bipartite graph (left: nodes with partners, right: admissible colors).
+ */
+ for (i = 0, n_alloc = 0; i < insn->n_ops; ++i) {
be_operand_t *op = &insn->ops[i];
/*
- If the operand has no partner or the partner has not been marked
- for allocation, determine the admissible registers and mark it
- for allocation by associating the node and its partner with the
- set of admissible registers via a bipartite graph.
- */
- if(!op->partner || !pmap_contains(partners, op->partner->carrier)) {
+ * If the operand has no partner or the partner has not been marked
+ * for allocation, determine the admissible registers and mark it
+ * for allocation by associating the node and its partner with the
+ * set of admissible registers via a bipartite graph.
+ */
+ if (!op->partner || !pmap_contains(partners, op->partner->carrier)) {
ir_node *partner = op->partner ? op->partner->carrier : NULL;
int i;
pmap_insert(partners, op->carrier, partner);
- if(partner != NULL)
+ if (partner != NULL)
pmap_insert(partners, partner, op->carrier);
/* don't insert a node twice */
- for(i = 0; i < n_alloc; ++i) {
- if(alloc_nodes[i] == op->carrier) {
+ for (i = 0; i < n_alloc; ++i) {
+ if (alloc_nodes[i] == op->carrier) {
break;
}
}
- if(i < n_alloc)
+ if (i < n_alloc)
continue;
alloc_nodes[n_alloc] = op->carrier;
}
/*
- Put all nodes which live through the constrained instruction also to the
- allocation bipartite graph. They are considered unconstrained.
- */
- if(perm != NULL) {
+ * Put all nodes which live through the constrained instruction also to the
+ * allocation bipartite graph. They are considered unconstrained.
+ */
+ if (perm != NULL) {
foreach_out_edge(perm, edge) {
int i;
ir_node *proj = get_edge_src_irn(edge);
+ be_lv_t *lv = be_get_irg_liveness(env->irg);
assert(is_Proj(proj));
- if(!values_interfere(birg, proj, irn) || pmap_contains(partners, proj))
+ if (!be_values_interfere(lv, proj, irn)
+ || pmap_contains(partners, proj))
continue;
/* don't insert a node twice */
- for(i = 0; i < n_alloc; ++i) {
- if(alloc_nodes[i] == proj) {
+ for (i = 0; i < n_alloc; ++i) {
+ if (alloc_nodes[i] == proj) {
break;
}
}
- if(i < n_alloc)
+ if (i < n_alloc)
continue;
alloc_nodes[n_alloc] = proj;
pmap_insert(partners, proj, NULL);
- bitset_clear_all(bs);
- arch_put_non_ignore_regs(env->cls, bs);
- bitset_andnot(bs, env->ignore_colors);
- bitset_foreach(bs, col) {
+ bitset_foreach(env->allocatable_regs, col) {
//hungarian_add(bp, n_alloc, col, 1);
bipartite_add(bp, n_alloc, col);
}
match_res = hungarian_solve(bp, assignment, &cost, 1);
assert(match_res == 0 && "matching failed");
#else
+ /*bipartite_dump_f(stderr, bp);*/
bipartite_matching(bp, assignment);
#endif
/* Assign colors obtained from the matching. */
- for(i = 0; i < n_alloc; ++i) {
+ for (i = 0; i < n_alloc; ++i) {
const arch_register_t *reg;
ir_node *irn;
- assert(assignment[i] >= 0 && "there must have been a register assigned");
+ assert(assignment[i] >= 0 && "there must have been a register assigned (node not register pressure faithful?)");
reg = arch_register_for_index(env->cls, assignment[i]);
- assert(! (reg->type & arch_register_type_ignore));
irn = alloc_nodes[i];
if (irn != NULL) {
DBG((dbg, LEVEL_2, "\tsetting %+F to register %s\n", irn, reg->name));
}
- irn = pmap_get(partners, alloc_nodes[i]);
+ irn = (ir_node*)pmap_get(partners, alloc_nodes[i]);
if (irn != NULL) {
arch_set_irn_register(irn, reg);
(void) pset_hinsert_ptr(alloc_env->pre_colored, irn);
}
/* Allocate the non-constrained Projs of the Perm. */
- if(perm != NULL) {
+ if (perm != NULL) {
bitset_clear_all(bs);
/* Put the colors of all Projs in a bitset. */
ir_node *proj = get_edge_src_irn(edge);
const arch_register_t *reg = arch_get_irn_register(proj);
- if(reg != NULL)
+ if (reg != NULL)
bitset_set(bs, reg->index);
}
DBG((dbg, LEVEL_2, "\tchecking reg of %+F: %s\n", proj, reg ? reg->name : "<none>"));
- if(reg == NULL) {
+ if (reg == NULL) {
col = get_next_free_reg(alloc_env, bs);
reg = arch_register_for_index(env->cls, col);
bitset_set(bs, reg->index);
*/
static void constraints(ir_node *bl, void *data)
{
- be_chordal_alloc_env_t *env = data;
-
- /*
- Start silent in the start block.
- The silence remains until the first barrier is seen.
- Each other block is begun loud.
- */
- int silent = bl == get_irg_start_block(get_irn_irg(bl));
- ir_node *irn;
+ be_chordal_alloc_env_t *env = (be_chordal_alloc_env_t*)data;
+ ir_node *irn;
- /*
- If the block is the start block search the barrier and
- start handling constraints from there.
- */
-
- for(irn = sched_first(bl); !sched_is_end(irn);) {
- irn = handle_constraints(env, irn, &silent);
- }
-}
-
-/**
- * Annotate the register pressure to the nodes and compute
- * the liveness intervals.
- * @param block The block to do it for.
- * @param env_ptr The environment.
- */
-static void pressure(ir_node *block, void *env_ptr)
-{
-/* Convenience macro for a def */
-#define border_def(irn, step, real) \
- border_add(env, head, irn, step, pressure--, 1, real)
-
-/* Convenience macro for a use */
-#define border_use(irn, step, real) \
- border_add(env, head, irn, step, ++pressure, 0, real)
-
- be_chordal_alloc_env_t *alloc_env = env_ptr;
- be_chordal_env_t *env = alloc_env->chordal_env;
- bitset_t *live = alloc_env->live;
- ir_node *irn;
- be_lv_t *lv = env->birg->lv;
-
- int i, n;
- bitset_pos_t elm;
- unsigned step = 0;
- unsigned pressure = 0;
- struct list_head *head;
-
- 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);
- pmap_insert(env->border_heads, block, head);
-
- /*
- * Make final uses of all values live out of the block.
- * They are necessary to build up real intervals.
- */
- be_lv_foreach(lv, block, be_lv_state_end, i) {
- ir_node *irn = be_lv_get_irn(lv, block, i);
- if(has_reg_class(env, irn)) {
- DBG((dbg, LEVEL_3, "\tMaking live: %+F/%d\n", irn, get_irn_idx(irn)));
- bitset_set(live, get_irn_idx(irn));
- border_use(irn, step, 0);
- }
- }
- ++step;
-
- /*
- * Determine the last uses of a value inside the block, since they are
- * relevant for the interval borders.
- */
- sched_foreach_reverse(block, irn) {
- DBG((dbg, LEVEL_1, "\tinsn: %+F, pressure: %d\n", irn, pressure));
- DBG((dbg, LEVEL_2, "\tlive: %B\n", live));
-
- if (get_irn_mode(irn) == mode_T) {
- const ir_edge_t *edge;
-
- foreach_out_edge(irn, edge) {
- ir_node *proj = get_edge_src_irn(edge);
-
- /*
- * If the node defines some value, which can put into a
- * register of the current class, make a border for it.
- */
- if(has_reg_class(env, proj)) {
- int nr = get_irn_idx(proj);
-
- bitset_clear(live, nr);
- border_def(proj, step, 1);
- }
- }
- }
-
- /*
- * If the node defines some value, which can put into a
- * register of the current class, make a border for it.
- */
- if(has_reg_class(env, irn)) {
- int nr = get_irn_idx(irn);
-
- bitset_clear(live, nr);
- border_def(irn, step, 1);
- }
-
- /*
- * If the node is no phi node we can examine the uses.
- */
- if(!is_Phi(irn)) {
- for(i = 0, n = get_irn_arity(irn); i < n; ++i) {
- ir_node *op = get_irn_n(irn, i);
-
- if(has_reg_class(env, op)) {
- int nr = get_irn_idx(op);
- const char *msg = "-";
-
- if(!bitset_is_set(live, nr)) {
- border_use(op, step, 1);
- bitset_set(live, nr);
- msg = "X";
- }
-
- DBG((dbg, LEVEL_4, "\t\t%s pos: %d, use: %+F\n", msg, i, op));
- }
- }
- }
- ++step;
- }
-
- bitset_foreach(live, elm) {
- ir_node *irn = get_idx_irn(env->irg, elm);
- if (be_is_live_in(lv, block, irn))
- border_def(irn, step, 0);
+ for (irn = sched_first(bl); !sched_is_end(irn);) {
+ irn = handle_constraints(env, irn);
}
}
static void assign(ir_node *block, void *env_ptr)
{
- be_chordal_alloc_env_t *alloc_env = env_ptr;
+ be_chordal_alloc_env_t *alloc_env = (be_chordal_alloc_env_t*)env_ptr;
be_chordal_env_t *env = alloc_env->chordal_env;
bitset_t *live = alloc_env->live;
bitset_t *colors = alloc_env->colors;
bitset_t *in_colors = alloc_env->in_colors;
struct list_head *head = get_block_border_head(env, block);
- be_lv_t *lv = env->birg->lv;
+ be_lv_t *lv = be_get_irg_liveness(env->irg);
const ir_node *irn;
border_t *b;
*/
be_lv_foreach(lv, block, be_lv_state_in, idx) {
irn = be_lv_get_irn(lv, block, idx);
- if(has_reg_class(env, irn)) {
+ if (has_reg_class(env, irn)) {
const arch_register_t *reg = arch_get_irn_register(irn);
int col;
* Assign a color, if it is a local def. Global defs already have a
* color.
*/
- if(b->is_def && !be_is_live_in(lv, block, irn)) {
+ if (b->is_def && !be_is_live_in(lv, block, irn)) {
const arch_register_t *reg;
- int col = NO_COLOR;
+ int col;
- if(ignore || pset_find_ptr(alloc_env->pre_colored, irn)) {
+ if (ignore || pset_find_ptr(alloc_env->pre_colored, irn)) {
reg = arch_get_irn_register(irn);
col = reg->index;
assert(!bitset_is_set(colors, col) && "pre-colored register must be free");
col = get_next_free_reg(alloc_env, colors);
reg = arch_register_for_index(env->cls, col);
assert(arch_get_irn_register(irn) == NULL && "This node must not have been assigned a register yet");
- assert(!arch_register_type_is(reg, ignore) && "Must not assign ignore register");
}
bitset_set(colors, col);
assert(!bitset_is_set(live, nr) && "Value's definition must not have been encountered");
bitset_set(live, nr);
- }
-
- /* Clear the color upon a use. */
- else if(!b->is_def) {
+ } else if (!b->is_def) {
+ /* Clear the color upon a use. */
const arch_register_t *reg = arch_get_irn_register(irn);
int col;
assert(reg && "Register must have been assigned");
col = arch_register_get_index(reg);
-#ifndef NDEBUG
- if(!arch_register_type_is(reg, ignore)) {
- assert(bitset_is_set(live, nr) && "Cannot have a non live use");
- }
-#endif
bitset_clear(colors, col);
bitset_clear(live, nr);
be_chordal_alloc_env_t env;
char buf[256];
be_lv_t *lv;
- be_irg_t *birg = chordal_env->birg;
const arch_register_class_t *cls = chordal_env->cls;
int colors_n = arch_register_class_n_regs(cls);
ir_graph *irg = chordal_env->irg;
- lv = be_assure_liveness(birg);
+ lv = be_assure_liveness(irg);
be_liveness_assure_sets(lv);
be_liveness_assure_chk(lv);
env.in_colors = bitset_alloca(colors_n);
env.pre_colored = pset_new_ptr_default();
- BE_TIMER_PUSH(t_constr);
+ be_timer_push(T_CONSTR);
/* Handle register targeting constraints */
dom_tree_walk_irg(irg, constraints, NULL, &env);
- if(chordal_env->opts->dump_flags & BE_CH_DUMP_CONSTR) {
- snprintf(buf, sizeof(buf), "-%s-constr", chordal_env->cls->name);
- be_dump(chordal_env->irg, buf, dump_ir_block_graph_sched);
+ if (chordal_env->opts->dump_flags & BE_CH_DUMP_CONSTR) {
+ snprintf(buf, sizeof(buf), "%s-constr", chordal_env->cls->name);
+ dump_ir_graph(chordal_env->irg, buf);
}
- BE_TIMER_POP(t_constr);
+ be_timer_pop(T_CONSTR);
env.live = bitset_malloc(get_irg_last_idx(chordal_env->irg));
/* First, determine the pressure */
- dom_tree_walk_irg(irg, pressure, NULL, &env);
+ dom_tree_walk_irg(irg, create_borders, NULL, env.chordal_env);
/* Assign the colors */
dom_tree_walk_irg(irg, assign, NULL, &env);
- if(chordal_env->opts->dump_flags & BE_CH_DUMP_TREE_INTV) {
+ if (chordal_env->opts->dump_flags & BE_CH_DUMP_TREE_INTV) {
plotter_t *plotter;
ir_snprintf(buf, sizeof(buf), "ifg_%s_%F.eps", chordal_env->cls->name, irg);
plotter = new_plotter_ps(buf);
del_pset(env.pre_colored);
}
+BE_REGISTER_MODULE_CONSTRUCTOR(be_init_chordal)
void be_init_chordal(void)
{
+ static be_ra_chordal_coloring_t coloring = {
+ be_ra_chordal_color
+ };
FIRM_DBG_REGISTER(dbg, "firm.be.chordal");
-}
-BE_REGISTER_MODULE_CONSTRUCTOR(be_init_chordal);
+ be_register_chordal_coloring("default", &coloring);
+}
projects / libfirm / blobdiff