static void update_call_edge_frequencies (gimple_seq_node first, basic_block bb) { struct cgraph_node *cfun_node = NULL; int bb_freq = 0; gimple_seq_node n; for (n = first; n ; n = n->next) if (is_gimple_call (n->stmt)) { struct cgraph_edge *e; /* These function calls are expensive enough that we want to avoid calling them if we never see any calls. */ if (cfun_node == NULL) { cfun_node = cgraph_get_node (current_function_decl); bb_freq = (compute_call_stmt_bb_frequency (current_function_decl, bb)); } e = cgraph_edge (cfun_node, n->stmt); if (e != NULL) e->frequency = bb_freq; } }
/* Verify cgraph nodes of given cgraph node. */ void verify_cgraph_node (struct cgraph_node *node) { struct cgraph_edge *e; struct cgraph_node *main_clone; struct function *this_cfun = DECL_STRUCT_FUNCTION (node->decl); struct function *saved_cfun = cfun; basic_block this_block; gimple_stmt_iterator gsi; bool error_found = false; if (errorcount || sorrycount) return; timevar_push (TV_CGRAPH_VERIFY); /* debug_generic_stmt needs correct cfun */ set_cfun (this_cfun); for (e = node->callees; e; e = e->next_callee) if (e->aux) { error ("aux field set for edge %s->%s", cgraph_node_name (e->caller), cgraph_node_name (e->callee)); error_found = true; } if (node->count < 0) { error ("Execution count is negative"); error_found = true; } for (e = node->callers; e; e = e->next_caller) { if (e->count < 0) { error ("caller edge count is negative"); error_found = true; } if (e->frequency < 0) { error ("caller edge frequency is negative"); error_found = true; } if (e->frequency > CGRAPH_FREQ_MAX) { error ("caller edge frequency is too large"); error_found = true; } if (!e->inline_failed) { if (node->global.inlined_to != (e->caller->global.inlined_to ? e->caller->global.inlined_to : e->caller)) { error ("inlined_to pointer is wrong"); error_found = true; } if (node->callers->next_caller) { error ("multiple inline callers"); error_found = true; } } else if (node->global.inlined_to) { error ("inlined_to pointer set for noninline callers"); error_found = true; } } if (!node->callers && node->global.inlined_to) { error ("inlined_to pointer is set but no predecessors found"); error_found = true; } if (node->global.inlined_to == node) { error ("inlined_to pointer refers to itself"); error_found = true; } for (main_clone = cgraph_node (node->decl); main_clone; main_clone = main_clone->next_clone) if (main_clone == node) break; if (!cgraph_node (node->decl)) { error ("node not found in cgraph_hash"); error_found = true; } if (node->analyzed && !TREE_ASM_WRITTEN (node->decl) && (!DECL_EXTERNAL (node->decl) || node->global.inlined_to)) { if (this_cfun->cfg) { /* The nodes we're interested in are never shared, so walk the tree ignoring duplicates. */ struct pointer_set_t *visited_nodes = pointer_set_create (); /* Reach the trees by walking over the CFG, and note the enclosing basic-blocks in the call edges. */ FOR_EACH_BB_FN (this_block, this_cfun) for (gsi = gsi_start_bb (this_block); !gsi_end_p (gsi); gsi_next (&gsi)) { gimple stmt = gsi_stmt (gsi); tree decl; if (is_gimple_call (stmt) && (decl = gimple_call_fndecl (stmt))) { struct cgraph_edge *e = cgraph_edge (node, stmt); if (e) { if (e->aux) { error ("shared call_stmt:"); debug_gimple_stmt (stmt); error_found = true; } if (e->callee->decl != cgraph_node (decl)->decl && e->inline_failed) { error ("edge points to wrong declaration:"); debug_tree (e->callee->decl); fprintf (stderr," Instead of:"); debug_tree (decl); } e->aux = (void *)1; } else { error ("missing callgraph edge for call stmt:"); debug_gimple_stmt (stmt); error_found = true; } } } pointer_set_destroy (visited_nodes); } else /* No CFG available?! */ gcc_unreachable (); for (e = node->callees; e; e = e->next_callee) { if (!e->aux && !e->indirect_call) { error ("edge %s->%s has no corresponding call_stmt", cgraph_node_name (e->caller), cgraph_node_name (e->callee)); debug_gimple_stmt (e->call_stmt); error_found = true; } e->aux = 0; } }