/*
- * Copyright (C) 1995-2007 University of Karlsruhe. All right reserved.
+ * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved.
*
* This file is part of libFirm.
*
# include "config.h"
#endif
-#ifdef INTERPROCEDURAL_VIEW
-
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#include "array.h"
#include "pmap.h"
#include "hashptr.h"
+#include "raw_bitset.h"
#include "irgwalk.h"
-static int master_cg_visited = 0;
-static INLINE int cg_irg_visited (ir_graph *n);
+static ir_visited_t master_cg_visited = 0;
+static INLINE int cg_irg_visited (ir_graph *n);
static INLINE void mark_cg_irg_visited(ir_graph *n);
-static INLINE void set_cg_irg_visited (ir_graph *n, int i);
+static INLINE void set_cg_irg_visited (ir_graph *n, ir_visited_t i);
/** Returns the callgraph state of the program representation. */
irp_callgraph_state get_irp_callgraph_state(void) {
/* Returns the caller at position pos. */
ir_graph *get_irg_caller(ir_graph *irg, int pos) {
- assert (pos >= 0 && pos < get_irg_n_callers(irg));
+ assert(pos >= 0 && pos < get_irg_n_callers(irg));
if (irg->callers) return irg->callers[pos];
return NULL;
}
-#ifdef INTERPROCEDURAL_VIEW
/* Returns non-zero if the caller at position pos is "a backedge", i.e. a recursion. */
int is_irg_caller_backedge(ir_graph *irg, int pos) {
- assert (pos >= 0 && pos < get_irg_n_callers(irg));
- return irg->caller_isbe != NULL ? irg->caller_isbe[pos] : 0;
+ assert(pos >= 0 && pos < get_irg_n_callers(irg));
+ return irg->caller_isbe != NULL ? rbitset_is_set(irg->caller_isbe, pos) : 0;
}
/** Search the caller in the list of all callers and set it's backedge property. */
/* allocate a new array on demand */
if (irg->caller_isbe == NULL)
- irg->caller_isbe = xcalloc(n_callers, sizeof(irg->caller_isbe[0]));
+ irg->caller_isbe = rbitset_malloc(n_callers);
for (i = 0; i < n_callers; ++i) {
if (get_irg_caller(irg, i) == caller) {
- irg->caller_isbe[i] = 1;
+ rbitset_set(irg->caller_isbe, i);
break;
}
}
if (irg->caller_isbe != NULL) {
for (i = 0; i < n_callers; ++i)
- if (irg->caller_isbe[i]) return 1;
+ if (rbitset_is_set(irg->caller_isbe, i))
+ return 1;
}
return 0;
}
-#endif
/**
* Find the reversion position of a caller.
/* Returns the callee at position pos. */
ir_graph *get_irg_callee(ir_graph *irg, int pos) {
- assert (pos >= 0 && pos < get_irg_n_callees(irg));
+ assert(pos >= 0 && pos < get_irg_n_callees(irg));
if (irg->callees) return irg->callees[pos]->irg;
return NULL;
}
/* Returns non-zero if the callee at position pos is "a backedge", i.e. a recursion. */
int is_irg_callee_backedge(ir_graph *irg, int pos) {
- assert (pos >= 0 && pos < get_irg_n_callees(irg));
- return irg->callee_isbe != NULL ? irg->callee_isbe[pos] : 0;
+ assert(pos >= 0 && pos < get_irg_n_callees(irg));
+ return irg->callee_isbe != NULL ? rbitset_is_set(irg->callee_isbe, pos) : 0;
}
/* Returns non-zero if the irg has a backedge callee. */
if (irg->callee_isbe != NULL) {
for (i = 0; i < n_callees; ++i)
- if (irg->callee_isbe[i]) return 1;
+ if (rbitset_is_set(irg->callee_isbe, i))
+ return 1;
}
return 0;
}
-#ifdef INTERPROCEDURAL_VIEW
/**
* Mark the callee at position pos as a backedge.
*/
static void set_irg_callee_backedge(ir_graph *irg, int pos) {
int n = get_irg_n_callees(irg);
- assert (pos >= 0 && pos < n);
-
/* allocate a new array on demand */
if (irg->callee_isbe == NULL)
- irg->callee_isbe = xcalloc(n, sizeof(irg->callee_isbe[0]));
- irg->callee_isbe[pos] = 1;
+ irg->callee_isbe = rbitset_malloc(n);
+ assert(pos >= 0 && pos < n);
+ rbitset_set(irg->callee_isbe, pos);
}
-#endif
/* Returns the maximal loop depth of call nodes that call along this edge. */
int get_irg_callee_loop_depth(ir_graph *irg, int pos) {
- assert (pos >= 0 && pos < get_irg_n_callees(irg));
+ assert(pos >= 0 && pos < get_irg_n_callees(irg));
if (irg->callees) return irg->callees[pos]->max_depth;
return -1;
}
return e1->irg != e2->irg;
}
-/** compare two ir graphs */
+/** compare two ir graphs for pointer identity */
static int graph_cmp(const void *elt, const void *key) {
const ir_graph *e1 = elt;
const ir_graph *e2 = key;
void compute_callgraph(void) {
int i, n_irgs;
+#ifdef INTERPROCEDURAL_VIEW
assert(! get_interprocedural_view()); /* Else walking will not reach the Call nodes. */
+#endif
/* initialize */
free_callgraph();
static void do_walk(ir_graph *irg, callgraph_walk_func *pre, callgraph_walk_func *post, void *env) {
int i, n_callees;
- if (cg_irg_visited(irg)) return;
+ if (cg_irg_visited(irg))
+ return;
mark_cg_irg_visited(irg);
if (pre)
void callgraph_walk(callgraph_walk_func *pre, callgraph_walk_func *post, void *env) {
int i, n_irgs = get_irp_n_irgs();
- master_cg_visited++;
+ ++master_cg_visited;
- do_walk(get_irp_main_irg(), pre, post, env);
- for (i = 0; i < n_irgs; i++) {
+ /* roots are methods which have no callers in the current program */
+ for (i = 0; i < n_irgs; ++i) {
ir_graph *irg = get_irp_irg(i);
- if (!cg_irg_visited(irg) && get_irg_n_callers(irg) == 0)
+
+ if (get_irg_n_callers(irg) == 0)
do_walk(irg, pre, post, env);
}
+
+ /* in case of unreachable call loops we haven't visited some irgs yet */
for (i = 0; i < n_irgs; i++) {
ir_graph *irg = get_irp_irg(i);
- if (!cg_irg_visited(irg))
- do_walk(irg, pre, post, env);
+ do_walk(irg, pre, post, env);
}
}
static int loop_node_cnt = 0; /**< Counts the number of allocated cfloop nodes.
Each cfloop node gets a unique number.
What for? ev. remove. @@@ */
-#ifdef INTERPROCEDURAL_VIEW
static int current_dfn = 1; /**< Counter to generate depth first numbering
of visited nodes. */
-#endif
-
/*-----------------*/
/* Node attributes */
} scc_info;
/**
- * allocates a new scc_info of the obstack
+ * allocates a new scc_info on the obstack
*/
-static INLINE scc_info *new_scc_info(void) {
- scc_info *info = obstack_alloc (outermost_ir_graph->obst, sizeof(*info));
+static INLINE scc_info *new_scc_info(struct obstack *obst) {
+ scc_info *info = obstack_alloc(obst, sizeof(*info));
memset(info, 0, sizeof(*info));
return info;
}
/**
* Returns non-zero if a graph was already visited.
*/
-static INLINE int
-cg_irg_visited(ir_graph *irg) {
- scc_info *info = get_irg_link(irg);
- assert(info && "missing call to init_scc");
- return (info->visited >= master_cg_visited);
+static INLINE int cg_irg_visited(ir_graph *irg) {
+ return irg->self_visited >= master_cg_visited;
}
/**
* Marks a graph as visited.
*/
-static INLINE void
-mark_cg_irg_visited(ir_graph *irg) {
- scc_info *info = get_irg_link(irg);
- assert(info && "missing call to init_scc");
- info->visited = master_cg_visited;
+static INLINE void mark_cg_irg_visited(ir_graph *irg) {
+ irg->self_visited = master_cg_visited;
}
/**
* Set a graphs visited flag to i.
*/
-static INLINE void
-set_cg_irg_visited(ir_graph *irg, int i) {
- scc_info *info = get_irg_link(irg);
- assert(info && "missing call to init_scc");
- info->visited = i;
+static INLINE void set_cg_irg_visited(ir_graph *irg, ir_visited_t i) {
+ irg->self_visited = i;
}
/**
* Returns the visited flag of a graph.
*/
-static INLINE int
-get_cg_irg_visited(ir_graph *irg) {
- scc_info *info = get_irg_link(irg);
- assert(info && "missing call to init_scc");
- return info->visited;
+static INLINE ir_visited_t get_cg_irg_visited(ir_graph *irg) {
+ return irg->self_visited;
}
-static INLINE void
-mark_irg_in_stack(ir_graph *irg) {
+static INLINE void mark_irg_in_stack(ir_graph *irg) {
scc_info *info = get_irg_link(irg);
- assert(info && "missing call to init_scc");
+ assert(info && "missing call to init_scc()");
info->in_stack = 1;
}
-static INLINE void
-mark_irg_not_in_stack(ir_graph *irg) {
+static INLINE void mark_irg_not_in_stack(ir_graph *irg) {
scc_info *info = get_irg_link(irg);
- assert(info && "missing call to init_scc");
+ assert(info && "missing call to init_scc()");
info->in_stack = 0;
}
-static INLINE int
-irg_is_in_stack(ir_graph *irg) {
+static INLINE int irg_is_in_stack(ir_graph *irg) {
scc_info *info = get_irg_link(irg);
- assert(info && "missing call to init_scc");
+ assert(info && "missing call to init_scc()");
return info->in_stack;
}
-static INLINE void
-set_irg_uplink(ir_graph *irg, int uplink) {
+static INLINE void set_irg_uplink(ir_graph *irg, int uplink) {
scc_info *info = get_irg_link(irg);
- assert(info && "missing call to init_scc");
+ assert(info && "missing call to init_scc()");
info->uplink = uplink;
}
-static INLINE int
-get_irg_uplink(ir_graph *irg) {
+static INLINE int get_irg_uplink(ir_graph *irg) {
scc_info *info = get_irg_link(irg);
- assert(info && "missing call to init_scc");
+ assert(info && "missing call to init_scc()");
return info->uplink;
}
-static INLINE void
-set_irg_dfn(ir_graph *irg, int dfn) {
+static INLINE void set_irg_dfn(ir_graph *irg, int dfn) {
scc_info *info = get_irg_link(irg);
- assert(info && "missing call to init_scc");
+ assert(info && "missing call to init_scc()");
info->dfn = dfn;
}
-static INLINE int
-get_irg_dfn(ir_graph *irg) {
+static INLINE int get_irg_dfn(ir_graph *irg) {
scc_info *info = get_irg_link(irg);
- assert(info && "missing call to init_scc");
+ assert(info && "missing call to init_scc()");
return info->dfn;
}
*/
static INLINE void init_stack(void) {
if (stack) {
- ARR_RESIZE (ir_graph *, stack, 1000);
+ ARR_RESIZE(ir_graph *, stack, 1000);
} else {
- stack = NEW_ARR_F (ir_graph *, 1000);
+ stack = NEW_ARR_F(ir_graph *, 1000);
}
tos = 0;
}
* @param n the graph to be pushed
*/
static INLINE void push(ir_graph *irg) {
- if (tos == ARR_LEN (stack)) {
- int nlen = ARR_LEN (stack) * 2;
- ARR_RESIZE (ir_node *, stack, nlen);
+ if (tos == ARR_LEN(stack)) {
+ int nlen = ARR_LEN(stack) * 2;
+ ARR_RESIZE(ir_node *, stack, nlen);
}
stack [tos++] = irg;
mark_irg_in_stack(irg);
m = pop();
loop_node_cnt++;
set_irg_dfn(m, loop_node_cnt);
- add_loop_node(current_loop, (ir_node *)m);
+ add_loop_irg(current_loop, m);
m->l = current_loop;
//m->callgraph_loop_depth = current_loop->depth;
} while(m != irg);
}
-#ifdef INTERPROCEDURAL_VIEW
/* GL ??? my last son is my grandson??? Removes cfloops with no
ir_nodes in them. Such loops have only another loop as son. (Why
can't they have two loops as sons? Does it never get that far? ) */
ir_loop *last_son = lelement.son;
if (get_kind(last_son) == k_ir_loop &&
- get_loop_n_elements(last_son) == 1) {
- ir_loop *gson;
+ get_loop_n_elements(last_son) == 1) {
+ ir_loop *gson;
- lelement = get_loop_element(last_son, 0);
- gson = lelement.son;
- if(get_kind(gson) == k_ir_loop) {
- loop_element new_last_son;
+ lelement = get_loop_element(last_son, 0);
+ gson = lelement.son;
+ if (get_kind(gson) == k_ir_loop) {
+ loop_element new_last_son;
- gson -> outer_loop = l;
- new_last_son.son = gson;
- l -> children[last] = new_last_son;
- }
+ gson->outer_loop = l;
+ new_last_son.son = gson;
+ l->children[last] = new_last_son;
+ }
}
-
current_loop = l;
}
-#endif
/**
* Removes and unmarks all nodes up to n from the stack.
/* The loop data structure. **/
/**********************************************************************/
-#ifdef INTERPROCEDURAL_VIEW
/**
* Allocates a new loop as son of current_loop. Sets current_loop
* to the new loop and returns the father.
*/
static ir_loop *new_loop(void) {
- ir_loop *father, *son;
-
- father = current_loop;
-
- son = obstack_alloc(outermost_ir_graph->obst, sizeof(*son));
- memset(son, 0, sizeof(*son));
- son->kind = k_ir_loop;
- son->children = NEW_ARR_F (loop_element, 0);
- son->n_nodes = 0;
- son->n_sons = 0;
- son->link = NULL;
- if (father) {
- son->outer_loop = father;
- add_loop_son(father, son);
- son->depth = father->depth + 1;
- } else { /* The root loop */
- son->outer_loop = son;
- son->depth = 0;
- }
-
-#ifdef DEBUG_libfirm
- son->loop_nr = get_irp_new_node_nr();
-#endif
+ ir_loop *father = current_loop;
+ ir_loop *son = alloc_loop(father, outermost_ir_graph->obst);
current_loop = son;
return father;
}
+
/**********************************************************************/
/* Constructing and destructing the loop/backedge information. **/
/**********************************************************************/
/* Initialization steps. **********************************************/
-static void
-init_scc(void) {
+static void init_scc(struct obstack *obst) {
int i;
int n_irgs;
n_irgs = get_irp_n_irgs();
for (i = 0; i < n_irgs; ++i) {
ir_graph *irg = get_irp_irg(i);
- set_irg_link(irg, new_scc_info());
+ set_irg_link(irg, new_scc_info(obst));
irg->callgraph_recursion_depth = 0;
irg->callgraph_loop_depth = 0;
}
*
* @param root: only needed for assertion.
*/
-static int
-is_head(ir_graph *n, ir_graph *root)
-{
+static int is_head(ir_graph *n, ir_graph *root) {
int i, arity;
int some_outof_loop = 0, some_in_loop = 0;
* within the loop.
* @arg root: only needed for assertion.
*/
-static int
-is_endless_head(ir_graph *n, ir_graph *root)
+static int is_endless_head(ir_graph *n, ir_graph *root)
{
int i, arity;
int some_outof_loop = 0, some_in_loop = 0;
for (i = 0; i < arity; i++) {
ir_graph *pred = get_irg_callee(n, i);
assert(pred);
- if (is_irg_callee_backedge(n, i)) { continue; }
+ if (is_irg_callee_backedge(n, i))
+ continue;
if (!irg_is_in_stack(pred)) {
some_outof_loop = 1;
} else {
- if(get_irg_uplink(pred) < get_irg_uplink(root)) {
+ if (get_irg_uplink(pred) < get_irg_uplink(root)) {
assert(get_irg_uplink(pred) >= get_irg_uplink(root));
}
some_in_loop = 1;
}
}
-
return !some_outof_loop & some_in_loop;
}
+#ifdef INTERPROCEDURAL_VIEW
/**
* Check whether there is a parallel edge in the ip control flow.
* Only
*/
-static int
-is_ip_head(ir_graph *n, ir_graph *pred)
+static int is_ip_head(ir_graph *n, ir_graph *pred)
{
int is_be = 0;
+
int iv_rem = get_interprocedural_view();
set_interprocedural_view(1);
{
for (i = 0; i < arity; i++) {
ir_node *pred_cfop = skip_Proj(get_Block_cfgpred(sblock, i));
//printf(" "); DDMN(pred_cfop);
- if (get_irn_op(pred_cfop) == op_CallBegin) { /* could be Unknown */
+ if (is_CallBegin(pred_cfop)) { /* could be Unknown */
ir_graph *ip_pred = get_irn_irg(pred_cfop);
//printf(" "); DDMG(ip_pred);
if ((ip_pred == pred) && is_backedge(sblock, i)) {
set_interprocedural_view(iv_rem);
return is_be;
}
+#endif /* INTERPROCEDURAL_VIEW */
/**
* Returns index of the predecessor with the smallest dfn number
* greater-equal than limit.
*/
-static int
-smallest_dfn_pred(ir_graph *n, int limit)
+static int smallest_dfn_pred(ir_graph *n, int limit)
{
int i, index = -2, min = -1;
int arity = get_irg_n_callees(n);
for (i = 0; i < arity; i++) {
ir_graph *pred = get_irg_callee(n, i);
- if (is_irg_callee_backedge(n, i) || !irg_is_in_stack(pred)) continue;
+ if (is_irg_callee_backedge(n, i) || !irg_is_in_stack(pred))
+ continue;
if (get_irg_dfn(pred) >= limit && (min == -1 || get_irg_dfn(pred) < min)) {
index = i;
min = get_irg_dfn(pred);
}
/** Returns index of the predecessor with the largest dfn number. */
-static int
-largest_dfn_pred(ir_graph *n)
-{
+static int largest_dfn_pred(ir_graph *n) {
int i, index = -2, max = -1;
int arity = get_irg_n_callees(n);
- for (i = 0; i < arity; i++) {
+ for (i = 0; i < arity; ++i) {
ir_graph *pred = get_irg_callee(n, i);
if (is_irg_callee_backedge (n, i) || !irg_is_in_stack(pred)) continue;
if (get_irg_dfn(pred) > max) {
return index;
}
-#if 0
-static ir_graph *
-find_tail(ir_graph *n) {
+#ifndef INTERPROCEDURAL_VIEW
+static ir_graph *find_tail(ir_graph *n) {
ir_graph *m;
int i, res_index = -2;
for (i = tos-2; i >= 0; --i) {
m = stack[i];
- if (is_head (m, n)) {
- res_index = smallest_dfn_pred (m, get_irg_dfn(m) + 1);
+ if (is_head(m, n)) {
+ res_index = smallest_dfn_pred(m, get_irg_dfn(m) + 1);
if (res_index == -2) /* no smallest dfn pred found. */
- res_index = largest_dfn_pred (m);
+ res_index = largest_dfn_pred(m);
if ((m == n) && (res_index == -2)) {
i = -1;
}
/* We should not walk past our selves on the stack: The upcoming nodes
- are not in this loop. We assume a loop not reachable from Start. */
+ are not in this loop. We assume a loop not reachable from Start. */
if (m == n) {
i = -1;
break;
/* A dead loop not reachable from Start. */
for (i = tos-2; i >= 0; --i) {
m = stack[i];
- if (is_endless_head (m, n)) {
- res_index = smallest_dfn_pred (m, get_irg_dfn(m) + 1);
+ if (is_endless_head(m, n)) {
+ res_index = smallest_dfn_pred(m, get_irg_dfn(m) + 1);
if (res_index == -2) /* no smallest dfn pred found. */
- res_index = largest_dfn_pred (m);
+ res_index = largest_dfn_pred(m);
break;
}
if (m == n) { break; } /* It's not an unreachable loop, either. */
}
assert (res_index > -2);
- set_irg_callee_backedge (m, res_index);
+ set_irg_callee_backedge(m, res_index);
return get_irg_callee(m, res_index);
}
#else
-static ir_graph *
-find_tail(ir_graph *n) {
+static ir_graph *find_tail(ir_graph *n) {
ir_graph *m;
int i, res_index = -2;
ir_graph *pred = (i < tos -1) ? stack[i+1] : n;
m = stack[i];
- if (is_head (m, n)) {
+ if (is_head(m, n)) {
//printf(" found 1a! "); DDM;
in_and_out = m;
if (is_ip_head(pred, m)) {
//printf("*** head is "); DDMG(m);
- res_index = smallest_dfn_pred (m, get_irg_dfn(m) + 1);
+ res_index = smallest_dfn_pred(m, get_irg_dfn(m) + 1);
if (res_index == -2) /* no smallest dfn pred found. */
- res_index = largest_dfn_pred (m);
+ res_index = largest_dfn_pred(m);
- set_irg_callee_backedge (m, res_index);
+ set_irg_callee_backedge(m, res_index);
res = get_irg_callee(m, res_index);
//printf("*** tail is "); DDMG(res);
return res;
}
-#endif
+#endif /* INTERPROCEDURAL_VIEW */
/*-----------------------------------------------------------*
* The core algorithm. *
ir_loop *l = new_loop();
/* Remove the cfloop from the stack ... */
- pop_scc_unmark_visit (n);
+ pop_scc_unmark_visit(n);
/* The current backedge has been marked, that is temporarily eliminated,
by find tail. Start the scc algorithm
anew on the subgraph thats left (the current cfloop without the backedge)
in order to find more inner cfloops. */
- cgscc (tail);
+ cgscc(tail);
- assert (cg_irg_visited(n));
+ assert(cg_irg_visited(n));
close_loop(l);
} else {
pop_scc_to_loop(n);
ir_graph *irg = get_irp_irg(i);
if (irg->caller_isbe)
- free(irg->caller_isbe);
+ xfree(irg->caller_isbe);
irg->caller_isbe = NULL;
if (irg->callee_isbe)
- free(irg->callee_isbe);
+ xfree(irg->callee_isbe);
irg->callee_isbe = NULL;
}
}
-#endif
-
-
-
/* ----------------------------------------------------------------------------------- */
/* Another algorithm to compute recursion nesting depth */
/* weight. Assign graphs the maximal depth. */
/* ----------------------------------------------------------------------------------- */
-static void compute_loop_depth (ir_graph *irg, void *env) {
+static void compute_loop_depth(ir_graph *irg, void *env) {
int current_nesting = *(int *) env;
int old_nesting = irg->callgraph_loop_depth;
- int old_visited = get_cg_irg_visited(irg);
+ ir_visited_t old_visited = get_cg_irg_visited(irg);
int i, n_callees;
//return ;
return 0;
}
-static void compute_rec_depth (ir_graph *irg, void *env) {
+static void compute_rec_depth(ir_graph *irg, void *env) {
ana_entry2 *e = (ana_entry2 *)env;
ir_loop *l = irg->l;
int depth, old_depth = irg->callgraph_recursion_depth;
int i, n_callees;
int pushed = 0;
- if (cg_irg_visited(irg)) return;
+ if (cg_irg_visited(irg))
+ return;
mark_cg_irg_visited(irg);
/* -- compute and set the new nesting value -- */
/* Don't walk the graph, but a tree that is an unfolded graph.
Therefore we unset the visited flag at the end. */
n_callees = get_irg_n_callees(irg);
- for (i = 0; i < n_callees; i++) {
+ for (i = 0; i < n_callees; ++i) {
ir_graph *m = get_irg_callee(irg, i);
compute_rec_depth(m, env);
}
/* nodes to evaluate a callgraph edge. */
/* ----------------------------------------------------------------------------------- */
-#ifdef INTERPROCEDURAL_VIEW
/* Returns the method execution frequency of a graph. */
-double get_irg_method_execution_frequency (ir_graph *irg) {
+double get_irg_method_execution_frequency(ir_graph *irg) {
return irg->method_execution_frequency;
}
int n_callees;
(void) env;
- if (cg_irg_visited(irg)) return;
+ if (cg_irg_visited(irg))
+ return;
/* We need the values of all predecessors (except backedges).
So they must be marked. Else we will reach the node through
one of the unmarked ones. */
n_callers = get_irg_n_callers(irg);
- for (i = 0; i < n_callers; i++) {
+ for (i = 0; i < n_callers; ++i) {
ir_graph *m = get_irg_caller(irg, i);
- if (is_irg_caller_backedge(irg, i)) continue;
+ if (is_irg_caller_backedge(irg, i))
+ continue;
if (!cg_irg_visited(m)) {
return;
}
/* recur */
n_callees = get_irg_n_callees(irg);
- for (i = 0; i < n_callees; i++) {
+ for (i = 0; i < n_callees; ++i) {
compute_method_execution_frequency(get_irg_callee(irg, i), NULL);
}
}
/* Compute the backedges that represent recursions. */
void find_callgraph_recursions(void) {
int i, n_irgs = get_irp_n_irgs();
+ struct obstack temp;
reset_isbe();
reachable from the outermost graph, but call themselves in a cycle. */
assert(get_irp_main_irg());
outermost_ir_graph = get_irp_main_irg();
- init_scc();
+ obstack_init(&temp);
+ init_scc(&temp);
current_loop = NULL;
new_loop(); /* sets current_loop */
- master_cg_visited++;
+ ++master_cg_visited;
cgscc(outermost_ir_graph);
- for (i = 0; i < n_irgs; i++) {
+ for (i = 0; i < n_irgs; ++i) {
ir_graph *irg = get_irp_irg(i);
if (!cg_irg_visited(irg) && get_irg_n_callers(irg) == 0)
cgscc(irg);
}
- for (i = 0; i < n_irgs; i++) {
+ for (i = 0; i < n_irgs; ++i) {
ir_graph *irg = get_irp_irg(i);
if (!cg_irg_visited(irg))
cgscc(irg);
}
+ obstack_free(&temp, NULL);
+
irp->outermost_cg_loop = current_loop;
+ mature_loops(current_loop, outermost_ir_graph->obst);
/* -- Reverse the backedge information. -- */
- for (i = 0; i < n_irgs; i++) {
+ for (i = 0; i < n_irgs; ++i) {
ir_graph *irg = get_irp_irg(i);
int j, n_callees = get_irg_n_callees(irg);
for (j = 0; j < n_callees; ++j) {
current_nesting = 0;
irp->max_callgraph_loop_depth = 0;
master_cg_visited += 2;
- //printf (" ** starting at "); DDMG(get_irp_main_irg());
+ //printf(" ** starting at "); DDMG(get_irp_main_irg());
compute_loop_depth(get_irp_main_irg(), ¤t_nesting);
for (i = 0; i < n_irgs; i++) {
ir_graph *irg = get_irp_irg(i);
if ((get_cg_irg_visited(irg) < master_cg_visited-1) &&
get_irg_n_callers(irg) == 0) {
compute_loop_depth(irg, ¤t_nesting);
- //printf (" ** starting at "); DDMG(irg);
+ //printf(" ** starting at "); DDMG(irg);
}
}
for (i = 0; i < n_irgs; i++) {
ir_graph *irg = get_irp_irg(i);
if (get_cg_irg_visited(irg) < master_cg_visited-1) {
compute_loop_depth(irg, ¤t_nesting);
- //printf (" ** starting at "); DDMG(irg);
+ //printf(" ** starting at "); DDMG(irg);
}
}
master_cg_visited += 2;
compute_rec_depth(get_irp_main_irg(), &e);
- //printf (" ++ starting at "); DDMG(get_irp_main_irg());
+ //printf(" ++ starting at "); DDMG(get_irp_main_irg());
for (i = 0; i < n_irgs; i++) {
ir_graph *irg = get_irp_irg(i);
if ((get_cg_irg_visited(irg) < master_cg_visited-1) &&
get_irg_n_callers(irg) == 0) {
compute_rec_depth(irg, &e);
- //printf (" ++ starting at "); DDMG(irg);
+ //printf(" ++ starting at "); DDMG(irg);
}
}
for (i = 0; i < n_irgs; i++) {
ir_graph *irg = get_irp_irg(i);
if (get_cg_irg_visited(irg) < master_cg_visited-1) {
compute_rec_depth(irg, &e);
- //printf (" ++ starting at "); DDMG(irg);
+ //printf(" ++ starting at "); DDMG(irg);
}
}
}
}
}
-#endif
/* Returns the maximal loop depth of all paths from an external visible method to
this irg. */
set_irp_loop_nesting_depth_state(loop_nesting_depth_consistent);
}
-
loop_nesting_depth_state get_irp_loop_nesting_depth_state(void) {
return irp->lnd_state;
}
if (irp->lnd_state == loop_nesting_depth_consistent)
irp->lnd_state = loop_nesting_depth_inconsistent;
}
-
-#endif
projects / libfirm / blobdiff