#include <ctype.h>
#include "obst.h"
+#include "pset.h"
#include "list.h"
#include "bitset.h"
#include "iterator.h"
#include "beutil.h"
#include "besched.h"
-#include "bera_t.h"
#include "benumb_t.h"
#include "besched_t.h"
#include "belive_t.h"
-#include "bechordal_t.h"
#include "bearch.h"
-#define BUILD_GRAPH
+#include "bechordal_t.h"
+#include "bechordal_draw.h"
+
+#define NO_COLOR (-1)
+
#undef DUMP_INTERVALS
#undef DUMP_PRESSURE
#undef DUMP_IFG
#if defined(DUMP_IFG) && !defined(BUILD_GRAPH)
-#define BUILD_GRAPH
+#error Must define BUILD_GRAPH to be able to dump it.
#endif
#endif /* DEBUG_libfirm */
-#define TEST_COLORS 2048
-
static firm_dbg_module_t *dbg;
-/**
- * Environment for each of the chordal register allocator phases
- */
-typedef struct _env_t {
- struct obstack obst; /**< An obstack for temporary storage. */
- ir_graph *irg; /**< The graph the reg alloc is running on. */
-#ifdef BUILD_GRAPH
- set *nodes; /**< The interference graph nodes. */
- set *edges; /**< The interference graph edges. */
-#endif
-
- 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. */
- const arch_env_t *arch_env; /**< The arch interface environment. */
- const arch_register_class_t *cls; /**< The current register class. */
- void *data; /**< Some pointer, to which different
- phases can attach data to. */
-} env_t;
-
-
-typedef struct _be_chordal_dump_params_t {
- int x_dist;
- int y_dist;
- double font_scale;
-} be_chordal_dump_params_t;
-
-static const be_chordal_dump_params_t dump_params = {
- 10,
- 10,
- 4
-};
-
-#ifdef DUMP_INTERVALS
-
-static INLINE void intv_filename(char *s, size_t n,
- const env_t *env, ir_node *block)
-{
- ir_snprintf(s, n, "intv_%F_%s_bl%N.eps",
- env->irg, env->cls->name, block);
-}
-
-static void draw_interval_graph(const env_t *env,
- ir_node *block, const be_chordal_dump_params_t *params)
-{
- int i;
- int x_dist = params->x_dist;
- int y_dist = params->y_dist;
- ir_graph *irg = env->irg;
- struct list_head *border_head = get_block_border_head(block);
-
- FILE *f;
- char buf[1024];
-
- intv_filename(buf, sizeof(buf), env, block);
-
- if((f = fopen(buf, "wt")) != NULL) {
- border_t *b;
- int *seen = xcalloc(get_graph_node_count(irg), sizeof(seen[0]));
- int last_pos = list_empty(border_head) ? 0 : list_entry(border_head->prev, border_t, list)->step;
- int max_col = 0;
-
- list_for_each_entry_reverse(border_t, b, border_head, list) {
- const ir_node *irn = b->irn;
- int col = get_irn_color(irn);
- max_col = max_col > col ? max_col : col;
- }
-
- fprintf(f, "%%!PS-Adobe-2.0\n");
- fprintf(f, "%%%%BoundingBox: -10 -10 %d %d\n",
- x_dist * last_pos + x_dist, y_dist * max_col + y_dist);
- fprintf(f, "/mainfont /Courier findfont %f scalefont def\n", params->font_scale);
- fprintf(f, "mainfont setfont\n");
- fprintf(f, "0.2 setlinewidth\n");
-
- for(i = 0; i <= last_pos; ++i) {
- fprintf(f, "0 0 0 setrgbcolor\n");
- fprintf(f, "%d %d moveto\n", i * x_dist, -2);
- fprintf(f, "%d %d lineto\n", i * x_dist, max_col * y_dist + 2);
- fprintf(f, "stroke\n");
- }
- fprintf(f, "0.5 setlinewidth\n");
-
- list_for_each_entry_reverse(border_t, b, border_head, list) {
- const ir_node *irn = b->irn;
- int nr = get_irn_graph_nr(irn);
-
- if(b->is_def)
- seen[nr] = b->step;
- else {
- int col = get_irn_color(irn);
-
- int pos = last_pos - seen[nr];
- int end_pos = last_pos - b->step;
- int live_in = is_live_in(block, irn);
- int live_end = is_live_end(block, irn);
- int y_val = y_dist * col;
-
- int red = 0;
- int green = live_end;
- int blue = live_in;
-
- fprintf(f, "0 0 0 setrgbcolor\n");
- fprintf(f, "%d %d moveto\n", x_dist * pos + 2, y_val + 2);
- ir_fprintf(f, "(%n/%d%s) show\n", irn, nr, is_phi_operand(irn) ? "*" : "");
- fprintf(f, "%d %d %d setrgbcolor\n", red, green, blue);
- fprintf(f, "%d %d moveto\n", x_dist * pos, y_val);
- fprintf(f, "%d %d lineto\n", (x_dist * end_pos) - 5, y_val);
- fprintf(f, "stroke\n");
- }
- }
-
- free(seen);
- fclose(f);
- }
-}
-
-static void dump_block(ir_node *bl, void *data)
-{
- const env_t *env = data;
- FILE *f = env->data;
- char buf[128];
-
- draw_interval_graph(env, bl, &dump_params);
-
- intv_filename(buf, sizeof(buf), env, bl);
- ir_fprintf(f, "\tb%N [shape=\"epsf\" shapefile=\"%s\"];\n", bl, buf);
-}
-
-static void dump_edges(ir_node *bl, void *data)
-{
- const env_t *env = data;
- FILE *f = env->data;
- int i, n;
- ir_node *dom;
-
-#if 0
- for(i = 0, n = get_irn_arity(bl); i < n; ++i) {
- ir_node *pred = get_irn_n(bl, i);
- ir_fprintf(f, "\tb%N -> b%N;\n", get_nodes_block(pred), bl);
- }
-#endif
-
- for(dom = get_Block_dominated_first(bl); dom;
- dom = get_Block_dominated_next(dom)) {
-
- ir_fprintf(f, "\tb%N -> b%N;\n", dom, bl);
- }
-}
-
-static void dump_intv_cfg(env_t *env)
-{
- FILE *f;
- char buf[128];
-
- ir_snprintf(buf, sizeof(buf), "intv_cfg_%s_%F.dot",
- env->cls->name, env->irg);
-
- if((f = fopen(buf, "wt")) != NULL) {
- void *old_data = env->data;
-
- env->data = f;
- ir_fprintf(f, "digraph G {\n");
- ir_fprintf(f, "\tgraph [rankdir=\"LR\", ordering=\"out\"];\n");
- dom_tree_walk_irg(env->irg, dump_block, dump_edges, env);
- // irg_block_walk_graph(env->irg, dump_block, dump_edges, env);
- ir_fprintf(f, "}\n");
- fclose(f);
-
- env->data = old_data;
- }
-}
-
-#endif
-
#ifdef BUILD_GRAPH
#define IF_EDGE_HASH(e) ((e)->src)
return edge;
}
-static INLINE void add_if(const env_t *env, int src, int tgt)
+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;
pset_insert_ptr(tgt_node->neighb, src_node);
}
-static INLINE int are_connected(const env_t *env, int src, int tgt)
+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 ir_graph *irg, if_node_t *n1, if_node_t* n2) {
- return are_connected(get_irg_ra_link(irg), n1->nnr, n2->nnr);
+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);
}
-static void dump_ifg(ir_graph *irg, set *edges, const char *filename)
+#ifdef DUMP_IFG
+
+static void dump_ifg(const be_chordal_env_t *env)
{
static const char *colors[] = {
"coral",
static const int n_colors = sizeof(colors) / sizeof(colors[0]);
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;
ir_node *irn = get_irn_for_graph_nr(irg, nr);
int color = get_irn_color(irn);
- ir_fprintf(f, "\tn%d [label=\"%n\",color=\"%s\"]\n", nr, irn,
+ ir_fprintf(f, "\tn%d [label=\"%+F\",color=\"%s\"]\n", nr, irn,
color >= 0 && color < n_colors ? colors[color] : "black");
}
}
+#endif /* DUMP_IFG */
+
#endif /* BUILD_GRAPH */
* @param is_def Is the border a use or a def.
* @return The created border.
*/
-static INLINE border_t *border_add(env_t *env, struct list_head *head,
+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)
{
b->irn = irn;
b->step = step;
list_add_tail(&b->list, head);
- DBG((dbg, LEVEL_5, "\t\t%s adding %n, step: %d\n",
+ DBG((dbg, LEVEL_5, "\t\t%s adding %+F, step: %d\n",
is_def ? "def" : "use", irn, step));
return b;
#define border_use(irn, step, real) \
border_add(env, head, irn, step, ++pressure, 0, real)
- env_t *env = env_ptr;
+ be_chordal_env_t *env = env_ptr;
bitset_t *live = env->live;
ir_node *irn;
unsigned step = 0;
unsigned pressure = 0;
struct list_head *head;
- pset *live_in = get_live_in(block);
- pset *live_end = get_live_end(block);
+ 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 %n\n", block));
+ 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 = &get_ra_block_info(block)->border_head;
+ head = obstack_alloc(&env->obst, sizeof(*head));
INIT_LIST_HEAD(head);
+ pmap_insert(env->border_heads, block, head);
/*
* Make final uses of all values live out of the block.
- * They are neccessary to build up real intervals.
+ * 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: %n/%d\n", irn, get_irn_graph_nr(irn)));
+ DBG((dbg, LEVEL_3, "\tMaking live: %+F/%d\n", irn, get_irn_graph_nr(irn)));
bitset_set(live, get_irn_graph_nr(irn));
if(arch_irn_has_reg_class(env->arch_env, irn, 0, cls))
border_use(irn, step, 0);
* relevant for the interval borders.
*/
sched_foreach_reverse(block, irn) {
- DBG((dbg, LEVEL_1, "\tinsn: %n, pressure: %d\n", irn, pressure));
+ DBG((dbg, LEVEL_1, "\tinsn: %+F, pressure: %d\n", irn, pressure));
DBG((dbg, LEVEL_2, "\tlive: %b\n", live));
- /* Erase the color of each node encountered. */
- set_irn_color(irn, NO_COLOR);
-
/*
* If the node defines some value, which can put into a
* register of the current class, make a border for it.
if(arch_irn_has_reg_class(env->arch_env, op, 0, cls)) {
int nr = get_irn_graph_nr(op);
- DBG((dbg, LEVEL_4, "\t\tpos: %d, use: %n\n", i, op));
+ DBG((dbg, LEVEL_4, "\t\tpos: %d, use: %+F\n", i, op));
if(!bitset_is_set(live, nr)) {
border_use(op, step, 1);
border_def(irn, step, 0);
}
}
+
+ del_pset(live_in);
+ del_pset(live_end);
}
static void assign(ir_node *block, void *env_ptr)
{
- env_t *env = 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;
+ const arch_register_class_t *cls = env->cls;
/* Mark the obstack level and allocate the temporary tmp_colors */
void *obstack_level = obstack_base(obst);
const ir_node *irn;
border_t *b;
- struct list_head *head = &get_ra_block_info(block)->border_head;
- pset *live_in = get_live_in(block);
+ struct list_head *head = get_block_border_head(env, block);
+ pset *live_in = put_live_in(block, pset_new_ptr_default());
bitset_clear_all(live);
bitset_clear_all(colors);
bitset_clear_all(in_colors);
- DBG((dbg, LEVEL_4, "Assigning colors for block %n\n", block));
+ DBG((dbg, LEVEL_4, "Assigning colors for block %+F\n", block));
DBG((dbg, LEVEL_4, "\tusedef chain for block\n"));
list_for_each_entry(border_t, b, head, list) {
- DBG((dbg, LEVEL_4, "\t%s %n/%d\n", b->is_def ? "def" : "use",
+ DBG((dbg, LEVEL_4, "\t%s %+F/%d\n", b->is_def ? "def" : "use",
b->irn, get_irn_graph_nr(b->irn)));
}
const arch_register_t *reg = arch_get_irn_register(env->arch_env, irn, 0);
int col;
- assert(reg && "Nodfe 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. */
bitset_set(live, nr);
arch_set_irn_register(env->arch_env, irn, 0, reg);
- DBG((dbg, LEVEL_1, "\tassigning register %s(%d) to %n\n",
+ DBG((dbg, LEVEL_1, "\tassigning register %s(%d) to %+F\n",
arch_register_get_name(reg), col, irn));
}
/* Free the auxillary data on the obstack. */
obstack_free(obst, obstack_level);
+
+ del_pset(live_in);
}
void be_ra_chordal_init(void)
{
- dbg = firm_dbg_register(DBG_BERA);
+ dbg = firm_dbg_register(DBG_CHORDAL);
firm_dbg_set_mask(dbg, 0);
}
-void be_ra_chordal(ir_graph *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);
- env_t *env = malloc(sizeof(*env));
+ be_chordal_env_t *env = malloc(sizeof(*env));
if(get_irg_dom_state(irg) != dom_consistent)
compute_doms(irg);
env->cls = cls;
env->arch_env = arch_env;
env->irg = irg;
+ env->border_heads = pmap_create();
/* First, determine the pressure */
dom_tree_walk_irg(irg, pressure, NULL, env);
/* Insert probable spills */
- be_ra_chordal_spill(irg);
+ be_ra_chordal_spill(env);
/* Assign the colors */
dom_tree_walk_irg(irg, assign, NULL, env);
#ifdef DUMP_IFG
+ dump_ifg(env);
+#endif
+
+#ifdef DUMP_INTERVALS
{
char buf[128];
+ plotter_t *plotter;
- ir_snprintf(buf, sizeof(buf), "ifg_%F.dot", irg);
- dump_ifg(irg, env->edges, buf);
- }
-#endif
+ ir_snprintf(buf, sizeof(buf), "ifg_%s_%F.eps", cls->name, irg);
+ plotter = new_plotter_ps(buf);
-#ifdef DUMP_INTERVALS
- dump_intv_cfg(env);
+ draw_interval_tree(&draw_chordal_def_opts, env, plotter, arch_env, cls);
+ plotter_free(plotter);
+ }
#endif
- set_irg_ra_link(irg, env);
+ return env;
}
-void be_ra_chordal_done(ir_graph *irg)
+void be_ra_chordal_done(be_chordal_env_t *env)
{
- env_t *env = get_irg_ra_link(irg);
-
#ifdef BUILD_GRAPH
{
if_node_t *ifn;
}
#endif
+ pmap_destroy(env->border_heads);
obstack_free(&env->obst, NULL);
free(env);
}
-int phi_ops_interfere(const ir_node *a, const ir_node *b)
+int nodes_interfere(const be_chordal_env_t *env, const ir_node *a, const ir_node *b)
{
#ifdef BUILD_GRAPH
- ir_graph *irg = get_irn_irg(a);
- env_t *env = get_irg_ra_link(irg);
-
- assert(irg == get_irn_irg(b) && "Both nodes must be in the same graph");
-
return are_connected(env, get_irn_graph_nr(a), get_irn_graph_nr(b));
#else
return values_interfere(a, b);
}
#ifdef BUILD_GRAPH
-/** TODO remove this
- * Deprecated. Use be_ra_get_ifg_edges instead.
- */
-set *be_ra_get_ifg(ir_graph *irg) {
- return ((env_t *)get_irg_ra_link(irg))->edges;
-}
-set *be_ra_get_ifg_edges(ir_graph *irg) {
- return ((env_t *)get_irg_ra_link(irg))->edges;
+set *be_ra_get_ifg_edges(const be_chordal_env_t *env) {
+ return env->edges;
}
-set *be_ra_get_ifg_nodes(ir_graph *irg) {
- return ((env_t *)get_irg_ra_link(irg))->nodes;
+set *be_ra_get_ifg_nodes(const be_chordal_env_t *env) {
+ return env->nodes;
}
#endif