X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fstat%2Fdags.c;h=b14c990ff544fc27e00e3ee0e9e6f1af4d87906b;hb=2ea59d24639602c1e2f1a1a18dd687b2e5c5c2a8;hp=bbca3ec16d5048c857010a749aae4fa886e0daed;hpb=5d2f7c6eca2173a427ccf35a4b8ac793706de2e9;p=libfirm diff --git a/ir/stat/dags.c b/ir/stat/dags.c index bbca3ec16..b14c990ff 100644 --- a/ir/stat/dags.c +++ b/ir/stat/dags.c @@ -15,21 +15,19 @@ #include +#include "irprintf.h" +#include "irdump.h" #include "dags.h" +#include "irtools.h" enum dag_counting_options_t { FIRMSTAT_COPY_CONSTANTS = 0x00000001, /**< if set, constants will be treated as they are in the same block as its successors */ + FIRMSTAT_LOAD_IS_LEAVE = 0x00000002, /**< Load nodes are always leaves */ + FIRMSTAT_CALL_IS_LEAVE = 0x00000004, /**< Call nodes are always leaves */ + FIRMSTAT_ARGS_ARE_ROOTS = 0x00000008, /**< arguments (Proj(Proj(Start)) are roots */ }; -/** - * walker for clearing node links - */ -static void clear_links(ir_node *node, void *env) -{ - set_irn_link(node, NULL); -} - typedef struct _dag_entry_t dag_entry_t; /** @@ -53,25 +51,57 @@ struct _dag_entry_t { unsigned num_inner_nodes; /**< number of inner nodes in the DAG */ unsigned is_dead; /**< marks a dead entry */ dag_entry_t *next; /**< link all entries of a DAG */ + dag_entry_t *link; /**< if set, this entry is an ID */ }; /** - * a DAG Entry link, used to connect point - * from several places to the same DAG Entry + * return an DAG entry for the node n */ -typedef struct _dag_link_t { - dag_entry_t *entry; -} dag_link_t; +static dag_entry_t *get_irn_dag_entry(ir_node *n) +{ + dag_entry_t *res = get_irn_link(n); + + if (res) { + dag_entry_t *p; + + for (p = res; p->link; p = p->link); + + if (p != res) + set_irn_link(n, p); + + return p; + } + return NULL; +} + +#define set_irn_dag_entry(n, e) set_irn_link(n, e) + +/** + * checks wether a node is an arg + */ +static int is_arg(ir_node *node) +{ + if (! is_Proj(node)) + return 0; + + node = get_Proj_pred(node); + if (! is_Proj(node)) + return 0; + + node = get_Proj_pred(node); + return get_irn_op(node) == op_Start; +} /** * walker for connecting DAGs and counting. */ static void connect_dags(ir_node *node, void *env) { - dag_env_t *dag_env = env; - int i, arity; - ir_node *block; - dag_link_t *link; + dag_env_t *dag_env = env; + int i, arity; + ir_node *block; + dag_entry_t *entry; + ir_mode *mode; if (is_Block(node)) return; @@ -83,15 +113,23 @@ static void connect_dags(ir_node *node, void *env) block == get_irg_end_block(current_ir_graph)) return; - link = get_irn_link(node); + if (is_Phi(node)) + return; + + if (dag_env->options & FIRMSTAT_ARGS_ARE_ROOTS && is_arg(node)) + return; - if (! link) { - /* found a not assigned node, maybe a new root */ - dag_entry_t *entry = obstack_alloc(&dag_env->obst, sizeof(*entry)); + mode = get_irn_mode(node); + if (mode == mode_X || mode == mode_M) { + /* do NOT count mode_X nodes */ + return; + } + + entry = get_irn_dag_entry(node); - /* allocate a new link */ - link = obstack_alloc(&dag_env->obst, sizeof(*link)); - link->entry = entry; + if (! entry) { + /* found a not assigned node, maybe a new root */ + entry = obstack_alloc(&dag_env->obst, sizeof(*entry)); entry->num_nodes = 1; entry->num_roots = 1; @@ -99,17 +137,31 @@ static void connect_dags(ir_node *node, void *env) entry->root = node; entry->is_dead = 0; entry->next = dag_env->list_of_dags; + entry->link = NULL; ++dag_env->num_of_dags; dag_env->list_of_dags = entry; - set_irn_link(node, link); + set_irn_dag_entry(node, entry); } + /* if this option is set, Loads are allways leaves */ + if (dag_env->options & FIRMSTAT_LOAD_IS_LEAVE && get_irn_op(node) == op_Load) + return; + + if (dag_env->options & FIRMSTAT_CALL_IS_LEAVE && get_irn_op(node) == op_Call) + return; + /* put the predecessors into the same DAG as the current */ for (i = 0, arity = get_irn_arity(node); i < arity; ++i) { - ir_node *prev = get_irn_n(node, i); - int special = 0; + ir_node *prev = get_irn_n(node, i); + ir_mode *mode = get_irn_mode(prev); + + if (is_Phi(prev)) + continue; + + if (mode == mode_X || mode == mode_M) + continue; /* * copy constants if requested into the DAG's @@ -118,39 +170,79 @@ static void connect_dags(ir_node *node, void *env) */ if (dag_env->options & FIRMSTAT_COPY_CONSTANTS) { if (get_irn_op(prev) == op_Const || get_irn_op(prev) == op_SymConst) { - ++link->entry->num_nodes; - ++link->entry->num_inner_nodes; + ++entry->num_nodes; + ++entry->num_inner_nodes; } } - /* only nodes from teh same block goes into the DAG */ + /* only nodes from the same block goes into the DAG */ if (get_nodes_block(prev) == block) { - dag_link_t *prev_link = get_irn_link(prev); + dag_entry_t *prev_entry = get_irn_dag_entry(prev); - if (! prev_link) { + if (! prev_entry) { /* not assigned node, put it into the same DAG */ - set_irn_link(prev, link); - ++link->entry->num_nodes; - ++link->entry->num_inner_nodes; + set_irn_dag_entry(prev, entry); + ++entry->num_nodes; + ++entry->num_inner_nodes; } - else if (prev_link->entry != link->entry) { - /* two DAGs intersect */ - - assert(link->entry); + else { + if (prev_entry != entry) { - link->entry->num_roots += prev_link->entry->num_roots; - link->entry->num_nodes += prev_link->entry->num_nodes; - link->entry->num_inner_nodes += prev_link->entry->num_inner_nodes; + /* two DAGs intersect */ + entry->num_roots += prev_entry->num_roots; + entry->num_nodes += prev_entry->num_nodes; + entry->num_inner_nodes += prev_entry->num_inner_nodes; - --dag_env->num_of_dags; + --dag_env->num_of_dags; - prev_link->entry->is_dead = 1; - prev_link->entry = link->entry; + prev_entry->is_dead = 1; + prev_entry->link = entry; + } } } } } +#define DEFAULT_RET 1 +#define COLOR_RET 1 + +static unsigned mark_options; + +/** + * a vcg attribute hook + */ +static int stat_dag_mark_hook(FILE *F, ir_node *n, ir_node *l) +{ + static const char *colors[] = { "purple", "pink", "lightblue", "orange", "khaki", "orchid", "lilac", "turquoise" }; + dag_entry_t *entry; + + /* do not count Bad / NoMem */ + if (l) { + ir_op *op = get_irn_op(l); + + if (op == op_NoMem || op == op_Bad) + return DEFAULT_RET; + + /* check for additional options */ + op = get_irn_op(n); + + if (mark_options & FIRMSTAT_LOAD_IS_LEAVE && op == op_Load) + return DEFAULT_RET; + + if (mark_options & FIRMSTAT_CALL_IS_LEAVE && op == op_Call) + return DEFAULT_RET; + } + + entry = get_irn_dag_entry(n); + if (! entry) + return DEFAULT_RET; + + fprintf(F, "color: %s info3: \"DAG id: %u\"", colors[entry->id & 7], entry->id); + + /* I know the color! */ + return COLOR_RET; +} + /** * count the DAG's size of a graph */ @@ -165,17 +257,17 @@ void count_dags_in_graph(graph_entry_t *global, graph_entry_t *graph) return; /* first step, clear the links */ - irg_walk_graph(graph->irg, clear_links, NULL, NULL); + irg_walk_graph(graph->irg, firm_clear_link, NULL, NULL); obstack_init(&root_env.obst); root_env.num_of_dags = 0; root_env.list_of_dags = NULL; - root_env.options = FIRMSTAT_COPY_CONSTANTS; + root_env.options = FIRMSTAT_COPY_CONSTANTS | FIRMSTAT_LOAD_IS_LEAVE | FIRMSTAT_CALL_IS_LEAVE; /* count them */ irg_walk_graph(graph->irg, connect_dags, NULL, &root_env); - printf("Graph %p %s --- %d\n", graph->irg, get_entity_name(get_irg_entity(graph->irg)), + printf("Graph %p %s --- %d\n", (void *)graph->irg, get_entity_name(get_irg_entity(graph->irg)), root_env.num_of_dags); for (id = 0, entry = root_env.list_of_dags; entry; entry = entry->next) { @@ -190,6 +282,14 @@ void count_dags_in_graph(graph_entry_t *global, graph_entry_t *graph) get_irn_node_nr(entry->root)); } +#if 1 + /* dump for test */ + mark_options = root_env.options; + set_dump_node_vcgattr_hook(stat_dag_mark_hook); + dump_ir_block_graph(graph->irg, "-dag"); + set_dump_node_vcgattr_hook(NULL); +#endif + assert(id == root_env.num_of_dags); obstack_free(&root_env.obst, NULL);