X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbechordal.c;h=95e28d3f5cd78cb3e922779e1e62a48e67bccc5c;hb=1345e0ae4de685dbb4012d7f66b6a54c3cf1f27b;hp=ed037b1c6bc1467537a901e6f8c48e9645830644;hpb=0b4a2ee44d0acf366025f06f466e3f6040de604b;p=libfirm diff --git a/ir/be/bechordal.c b/ir/be/bechordal.c index ed037b1c6..95e28d3f5 100644 --- a/ir/be/bechordal.c +++ b/ir/be/bechordal.c @@ -34,233 +34,49 @@ #include "besched_t.h" #include "belive_t.h" #include "bearch.h" +#include "beifg.h" #include "bechordal_t.h" #include "bechordal_draw.h" +#define DBG_LEVEL SET_LEVEL_0 +#define DBG_LEVEL_CHECK SET_LEVEL_0 + #define NO_COLOR (-1) #undef DUMP_INTERVALS -#undef DUMP_PRESSURE -#undef DUMP_IFG -#if defined(DUMP_IFG) && !defined(BUILD_GRAPH) -#error Must define BUILD_GRAPH to be able to dump it. -#endif +typedef struct _be_chordal_alloc_env_t { + be_chordal_env_t *chordal_env; + 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. */ +} be_chordal_alloc_env_t; -#ifdef DEBUG_libfirm #include "fourcc.h" /* Make a fourcc for border checking. */ #define BORDER_FOURCC FOURCC('B', 'O', 'R', 'D') -#endif /* DEBUG_libfirm */ - -static firm_dbg_module_t *dbg; - -#ifdef BUILD_GRAPH - -#define IF_EDGE_HASH(e) ((e)->src) -#define IF_NODE_HASH(n) ((n)->nnr) - -static int if_edge_cmp(const void *p1, const void *p2, size_t size) +static void check_border_list(struct list_head *head) { - const if_edge_t *e1 = p1; - const if_edge_t *e2 = p2; - - return !(e1->src == e2->src && e1->tgt == e2->tgt); -} - -static int if_node_cmp(const void *p1, const void *p2, size_t size) -{ - const if_node_t *n1 = p1; - const if_node_t *n2 = p2; - - return n1->nnr != n2->nnr; + border_t *x; + list_for_each_entry(border_t, x, head, list) { + assert(x->magic == BORDER_FOURCC); + } } -static INLINE if_edge_t *edge_init(if_edge_t *edge, int src, int tgt) +static void check_heads(be_chordal_env_t *env) { - /* Bring the smaller entry to src. */ - if(src > tgt) { - edge->src = tgt; - edge->tgt = src; - } else { - edge->src = src; - edge->tgt = tgt; - } - - return edge; -} - -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; - /* insert edge */ - edge_init(&edge, src, tgt); - set_insert(env->edges, &edge, sizeof(edge), IF_EDGE_HASH(&edge)); - - /* insert nodes */ - node.nnr = src; - node.neighb = pset_new_ptr(8); - src_node = set_insert(env->nodes, &node, sizeof(node), IF_NODE_HASH(&node)); - node.nnr = tgt; - node.neighb = pset_new_ptr(8); - tgt_node = set_insert(env->nodes, &node, sizeof(node), IF_NODE_HASH(&node)); - - /* insert neighbors into nodes */ - pset_insert_ptr(src_node->neighb, tgt_node); - pset_insert_ptr(tgt_node->neighb, src_node); -} - -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 be_chordal_env_t *env, const if_node_t *n1, const if_node_t* n2) { - return are_connected(env, n1->nnr, n2->nnr); + 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); + } } -#ifdef DUMP_IFG - -static void dump_ifg(const be_chordal_env_t *env) -{ - static const char *colors[] = { - "coral", - "azure", - "bisque", - "aliceblue", - "blanchedalmond", - "deeppink", - "cornsilk", - "blueviolet", - "floralwhite", - "hotpink", - "gainsboro", - "indianred", - "cornflowerblue", - "ghostwhite", - "lightpink", - "palegoldenrod", - "darkslateblue", - "honeydew", - "ivory", - "lavender", - "mediumvioletred", - "indigo", - "lavenderblush", - "lemonchiffon", - "linen", - "pink", - "mintcream", - "red", - "mediumblue", - "mistyrose", - "mediumslateblue", - "moccasin", - "tomato", - "forestgreen", - "midnightblue", - "navajowhite", - "navy", - "oldlace", - "greenyellow", - "navyblue", - "papayawhip", - "lawngreen", - "powderblue", - "peachpuff", - "seashell", - "snow", - "thistle", - "wheat", - "darkkhaki", - "mintcream", - "khaki", - "Magentas", - "whitesmoke", - "peru", - "palegreen", - "blueviolet", - "rosybrown", - "saddlebrown", - "springgreen", - "darkviolet", - "darkslategray", - "dimgray", - "sienna", - "gray", - "tan", - "gray", - "mediumvioletred", - "lightgray", - "Oranges", - "cyan", - "lightslategray", - "darkorange", - "slategray", - "orangered", - "mediumturquoise", - "violet", - "paleturquoise" - }; - - 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; - int n_edges = 0; - if_edge_t *edge; - bitset_t *bs = bitset_malloc(get_graph_node_count(irg)); - - ir_fprintf(f, "graph \"%F\" {\n", irg); - fprintf(f, "\tnode [shape=box,style=filled]\n"); - - for(edge = set_first(edges); edge; edge = set_next(edges)) { - bitset_set(bs, edge->src); - bitset_set(bs, edge->tgt); - n_edges++; - } - - fprintf(f, "\tx [label=\"nodes: %u, edges: %d\"]\n", bitset_popcnt(bs), n_edges); - - bitset_foreach(bs, pos) { - int nr = (int) pos; - ir_node *irn = get_irn_for_graph_nr(irg, nr); - int color = get_irn_color(irn); - - ir_fprintf(f, "\tn%d [label=\"%+F\",color=\"%s\"]\n", nr, irn, - color >= 0 && color < n_colors ? colors[color] : "black"); - } - - for(edge = set_first(edges); edge; edge = set_next(edges)) { - fprintf(f, "\tn%d -- n%d [len=5]\n", edge->src, edge->tgt); - } - - fprintf(f, "}\n"); - fclose(f); - - bitset_free(bs); - } - -} - -#endif /* DUMP_IFG */ - -#endif /* BUILD_GRAPH */ - /** * Add an interval border to the list of a block's list @@ -287,6 +103,7 @@ static INLINE border_t *border_add(be_chordal_env_t *env, struct list_head *head /* 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; @@ -297,10 +114,8 @@ static INLINE border_t *border_add(be_chordal_env_t *env, struct list_head *head */ set_irn_link(irn, def); -#ifdef DEBUG_libfirm b->magic = BORDER_FOURCC; def->magic = BORDER_FOURCC; -#endif } /* @@ -311,9 +126,7 @@ static INLINE border_t *border_add(be_chordal_env_t *env, struct list_head *head else { b = get_irn_link(irn); -#ifdef DEBUG_libfirm assert(b && b->magic == BORDER_FOURCC && "Illegal border encountered"); -#endif } b->pressure = pressure; @@ -322,12 +135,23 @@ static INLINE border_t *border_add(be_chordal_env_t *env, struct list_head *head 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)); + DBG((env->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_has_reg_class(env->main_env->arch_env, irn, -1, env->cls); +} + /** * Annotate the register pressure to the nodes and compute * the liveness intervals. @@ -344,8 +168,10 @@ static void pressure(ir_node *block, void *env_ptr) #define border_use(irn, step, real) \ border_add(env, head, irn, step, ++pressure, 0, real) - be_chordal_env_t *env = env_ptr; - bitset_t *live = env->live; + be_chordal_alloc_env_t *alloc_env = env_ptr; + be_chordal_env_t *env = alloc_env->chordal_env; + bitset_t *live = alloc_env->live; + firm_dbg_module_t *dbg = env->dbg; ir_node *irn; int i, n; @@ -354,7 +180,6 @@ static void pressure(ir_node *block, void *env_ptr) struct list_head *head; 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 %+F\n", block)); bitset_clear_all(live); @@ -362,6 +187,7 @@ static void pressure(ir_node *block, void *env_ptr) /* 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); /* @@ -369,10 +195,11 @@ static void pressure(ir_node *block, void *env_ptr) * 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: %+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)) + if(has_reg_class(env, irn)) { + DBG((dbg, LEVEL_3, "\tMaking live: %+F/%d\n", irn, get_irn_graph_nr(irn))); + bitset_set(live, get_irn_graph_nr(irn)); border_use(irn, step, 0); + } } ++step; @@ -388,17 +215,11 @@ static void pressure(ir_node *block, void *env_ptr) * 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, irn, 0, cls)) { - bitset_pos_t elm; + if(has_reg_class(env, irn)) { int nr = get_irn_graph_nr(irn); bitset_clear(live, nr); border_def(irn, step, 1); - -#ifdef BUILD_GRAPH - bitset_foreach(live, elm) - add_if(env, nr, (int) elm); -#endif } /* @@ -408,7 +229,7 @@ static void pressure(ir_node *block, void *env_ptr) for(i = 0, n = get_irn_arity(irn); i < n; ++i) { ir_node *op = get_irn_n(irn, i); - if(arch_irn_has_reg_class(env->arch_env, op, 0, cls)) { + if(has_reg_class(env, op)) { int nr = get_irn_graph_nr(op); DBG((dbg, LEVEL_4, "\t\tpos: %d, use: %+F\n", i, op)); @@ -427,7 +248,7 @@ static void pressure(ir_node *block, void *env_ptr) * Add initial defs for all values live in. */ for(irn = pset_first(live_in); irn; irn = pset_next(live_in)) { - if(arch_irn_has_reg_class(env->arch_env, irn, 0, cls)) { + if(has_reg_class(env, irn)) { /* Mark the value live in. */ bitset_set(live, get_irn_graph_nr(irn)); @@ -437,22 +258,20 @@ static void pressure(ir_node *block, void *env_ptr) } } - del_pset(live_in); - del_pset(live_end); + + del_pset(live_in); + del_pset(live_end); } static void assign(ir_node *block, void *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; - - /* Mark the obstack level and allocate the temporary tmp_colors */ - void *obstack_level = obstack_base(obst); - /*bitset_t *tmp_colors = bitset_obstack_alloc(obst, env->colors_n);*/ + be_chordal_alloc_env_t *alloc_env = env_ptr; + be_chordal_env_t *env = alloc_env->chordal_env; + firm_dbg_module_t *dbg = env->dbg; + bitset_t *live = alloc_env->live; + bitset_t *colors = alloc_env->colors; + bitset_t *in_colors = alloc_env->in_colors; + const arch_env_t *arch_env = env->main_env->arch_env; const ir_node *irn; border_t *b; @@ -476,11 +295,11 @@ static void assign(ir_node *block, void *env_ptr) * allocated before), we have to mark their colors as used also. */ for(irn = pset_first(live_in); irn; irn = pset_next(live_in)) { - if(arch_irn_has_reg_class(env->arch_env, irn, 0, cls)) { - const arch_register_t *reg = arch_get_irn_register(env->arch_env, irn, 0); - int col; + if(has_reg_class(env, irn)) { + const arch_register_t *reg = arch_get_irn_register(arch_env, irn); + int col; - assert(reg && "Node 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. */ @@ -506,34 +325,33 @@ static void assign(ir_node *block, void *env_ptr) * color. */ if(b->is_def && !is_live_in(block, irn)) { - const arch_register_t *reg; + const arch_register_t *reg; int col = NO_COLOR; DBG((dbg, LEVEL_4, "\tcolors in use: %b\n", colors)); - col = bitset_next_clear(colors, 0); - reg = arch_register_for_index(env->cls, col); + col = bitset_next_clear(colors, 0); + reg = arch_register_for_index(env->cls, col); - assert(arch_get_irn_register(env->arch_env, irn, 0) == NULL - && "This node must not have been assigned a register yet"); + assert(arch_get_irn_register(arch_env, irn) == NULL && "This node must not have been assigned a register yet"); assert(!bitset_is_set(live, nr) && "Value's definition must not have been encountered"); bitset_set(colors, col); bitset_set(live, nr); - arch_set_irn_register(env->arch_env, irn, 0, reg); + arch_set_irn_register(arch_env, irn, reg); DBG((dbg, LEVEL_1, "\tassigning register %s(%d) to %+F\n", arch_register_get_name(reg), col, irn)); } /* Clear the color upon a use. */ else if(!b->is_def) { - const arch_register_t *reg = arch_get_irn_register(env->arch_env, irn, 0); + const arch_register_t *reg = arch_get_irn_register(arch_env, irn); int col; - assert(reg && "Register must have been assigned"); + assert(reg && "Register must have been assigned"); - col = arch_register_get_index(reg); + col = arch_register_get_index(reg); assert(bitset_is_set(live, nr) && "Cannot have a non live use"); bitset_clear(colors, col); @@ -541,57 +359,31 @@ static void assign(ir_node *block, void *env_ptr) } } - /* Free the auxillary data on the obstack. */ - obstack_free(obst, obstack_level); - - del_pset(live_in); + del_pset(live_in); } -void be_ra_chordal_init(void) +void be_ra_chordal_color(be_chordal_env_t *chordal_env) { - dbg = firm_dbg_register(DBG_CHORDAL); - firm_dbg_set_mask(dbg, 0); -} + int node_count = get_graph_node_count(chordal_env->irg); + int colors_n = arch_register_class_n_regs(chordal_env->cls); + ir_graph *irg = chordal_env->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); - be_chordal_env_t *env = malloc(sizeof(*env)); + be_chordal_alloc_env_t env; if(get_irg_dom_state(irg) != dom_consistent) compute_doms(irg); - obstack_init(&env->obst); - -#ifdef BUILD_GRAPH - env->edges = new_set(if_edge_cmp, node_count); - env->nodes = new_set(if_node_cmp, node_count); -#endif - - env->live = bitset_obstack_alloc(&env->obst, node_count); - env->colors = bitset_obstack_alloc(&env->obst, colors_n); - env->in_colors = bitset_obstack_alloc(&env->obst, colors_n); - env->colors_n = colors_n; - env->cls = cls; - env->arch_env = arch_env; - env->irg = irg; - env->border_heads = pmap_create(); + env.chordal_env = chordal_env; + env.live = bitset_malloc(node_count); + env.colors = bitset_malloc(colors_n); + env.in_colors = bitset_malloc(colors_n); + env.colors_n = colors_n; /* First, determine the pressure */ - dom_tree_walk_irg(irg, pressure, NULL, env); - - /* Insert probable spills */ - be_ra_chordal_spill(env); + dom_tree_walk_irg(irg, pressure, NULL, &env); /* Assign the colors */ - dom_tree_walk_irg(irg, assign, NULL, env); - -#ifdef DUMP_IFG - dump_ifg(env); -#endif + dom_tree_walk_irg(irg, assign, NULL, &env); #ifdef DUMP_INTERVALS { @@ -601,47 +393,12 @@ be_chordal_env_t *be_ra_chordal(ir_graph *irg, ir_snprintf(buf, sizeof(buf), "ifg_%s_%F.eps", cls->name, irg); plotter = new_plotter_ps(buf); - draw_interval_tree(&draw_chordal_def_opts, env, plotter, arch_env, cls); + draw_interval_tree(&draw_chordal_def_opts, chordal_env, plotter, env->arch_env, cls); plotter_free(plotter); } #endif - return env; -} - -void be_ra_chordal_done(be_chordal_env_t *env) -{ -#ifdef BUILD_GRAPH - { - if_node_t *ifn; - for(ifn = set_first(env->nodes); ifn; ifn = set_next(env->nodes)) - free(ifn->neighb); - free(env->nodes); - free(env->edges); - } -#endif - pmap_destroy(env->border_heads); - obstack_free(&env->obst, NULL); - free(env); + free(env.live); + free(env.colors); + free(env.in_colors); } - -int nodes_interfere(const be_chordal_env_t *env, const ir_node *a, const ir_node *b) -{ -#ifdef BUILD_GRAPH - return are_connected(env, get_irn_graph_nr(a), get_irn_graph_nr(b)); -#else - return values_interfere(a, b); -#endif /* BUILD_GRAPH */ -} - -#ifdef BUILD_GRAPH - -set *be_ra_get_ifg_edges(const be_chordal_env_t *env) { - return env->edges; -} - -set *be_ra_get_ifg_nodes(const be_chordal_env_t *env) { - return env->nodes; -} - -#endif