/*
- * 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.
*
* @date 06.12.2004
* @version $Id$
*/
-#ifdef HAVE_CONFIG_H
#include "config.h"
-#endif
-#include "impl.h"
+/* statev is expensive here, only enable when needed */
+#define DISABLE_STATEV
+
#include "iredges_t.h"
#include "irgwalk.h"
#include "irprintf_t.h"
#include "irbitset.h"
#include "irdump_t.h"
+#include "irnodeset.h"
+
+#include "dfs_t.h"
+#include "absgraph.h"
+#include "statev.h"
#include "beutil.h"
#include "belive_t.h"
-#include "besched_t.h"
+#include "beirg.h"
+#include "besched.h"
#include "bemodule.h"
DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL;)
-#define LV_STD_SIZE 128
+#define LV_STD_SIZE 64
+
+/* if defined, use binary search for already live nodes, else linear */
#define LV_USE_BINARY_SEARCH
#undef LV_INTESIVE_CHECKS
-static INLINE int is_liveness_node(const ir_node *irn)
+void be_live_chk_compare(be_lv_t *lv, lv_chk_t *lvc);
+
+/**
+ * Filter out some nodes for which we never need liveness.
+ *
+ * @param irn the node t check
+ * @return 0 if no liveness info is needed, 1 else
+ */
+static inline int is_liveness_node(const ir_node *irn)
{
- switch(get_irn_opcode(irn)) {
+ switch (get_irn_opcode(irn)) {
case iro_Block:
case iro_Bad:
case iro_End:
+ case iro_Anchor:
+ case iro_NoMem:
return 0;
- default:;
+ default:
+ return 1;
}
-
- return 1;
-}
-
-int (be_lv_next_irn)(const struct _be_lv_t *lv, const ir_node *bl, unsigned flags, int i)
-{
- return _be_lv_next_irn(lv, bl, flags, i);
-}
-
-const ir_node * (be_lv_get_irn)(const struct _be_lv_t *lv, const ir_node *bl, int i)
-{
- return _be_lv_get_irn(lv, bl, i);
}
int (be_is_live_in)(const be_lv_t *lv, const ir_node *block, const ir_node *irn)
#ifdef LV_USE_BINARY_SEARCH
-static INLINE unsigned _be_liveness_bsearch(struct _be_lv_info_t *arr, unsigned idx)
+static inline unsigned _be_liveness_bsearch(struct _be_lv_info_t *arr, unsigned idx)
{
struct _be_lv_info_t *payload = arr + 1;
int lo = 0;
int hi = n;
- if(n == 0)
- return 0;
-
-#if 0
- if(idx < payload[0].u.node.idx)
+ if (n == 0)
return 0;
- if(idx > payload[n - 1].u.node.idx)
- return n - 1;
-#endif
-
- /* start a binary search for the requested node. */
- while(lo < hi) {
+ do {
int md = lo + ((hi - lo) >> 1);
unsigned md_idx = payload[md].u.node.idx;
- if(idx > md_idx)
+ if (idx > md_idx)
lo = md + 1;
- else if(idx < md_idx)
+ else if (idx < md_idx)
hi = md;
else {
res = md;
}
res = lo;
- }
+ } while (lo < hi);
#ifdef LV_INTESIVE_CHECKS
{
unsigned i;
- for(i = res; i < n; ++i)
+ for (i = res; i < n; ++i)
assert(payload[i].u.node.idx >= idx);
- for(i = 0; i < res; ++i)
+ for (i = 0; i < res; ++i)
assert(payload[i].u.node.idx < idx);
}
#endif
/**
* This function searches linearly for the node in the array.
*/
-static INLINE unsigned _be_liveness_bsearch(struct _be_lv_info_t *arr, unsigned idx) {
+static inline unsigned _be_liveness_bsearch(struct _be_lv_info_t *arr, unsigned idx)
+{
unsigned n = arr[0].u.head.n_members;
unsigned i;
- for(i = 0; i < n; ++i) {
- if(arr[i + 1].u.node.idx == idx)
+ for (i = 0; i < n; ++i) {
+ if (arr[i + 1].u.node.idx == idx)
return i;
}
struct _be_lv_info_node_t *be_lv_get(const struct _be_lv_t *li, const ir_node *bl, const ir_node *irn)
{
- struct _be_lv_info_t *irn_live = phase_get_irn_data(&li->ph, bl);
+ struct _be_lv_info_t *irn_live;
+ struct _be_lv_info_node_t *res = NULL;
- if(irn_live) {
+ stat_ev_tim_push();
+ irn_live = phase_get_irn_data(&li->ph, bl);
+ if (irn_live) {
unsigned idx = get_irn_idx(irn);
/* Get the position of the index in the array. */
int pos = _be_liveness_bsearch(irn_live, idx);
/* Get the record in question. 1 must be added, since the first record contains information about the array and must be skipped. */
- struct _be_lv_info_node_t *res = &irn_live[pos + 1].u.node;
+ struct _be_lv_info_node_t *rec = &irn_live[pos + 1].u.node;
/* Check, if the irn is in deed in the array. */
- if(res->idx == idx)
- return res;
+ if (rec->idx == idx)
+ res = rec;
}
+ stat_ev_tim_pop("be_lv_get");
- return NULL;
+ return res;
}
static struct _be_lv_info_node_t *be_lv_get_or_set(struct _be_lv_t *li, ir_node *bl, ir_node *irn)
struct _be_lv_info_node_t *res = &irn_live[pos + 1].u.node;
/* Check, if the irn is in deed in the array. */
- if(res->idx != idx) {
+ if (res->idx != idx) {
struct _be_lv_info_t *payload;
unsigned n_members = irn_live[0].u.head.n_members;
unsigned n_size = irn_live[0].u.head.n_size;
unsigned i;
- if(n_members == n_size - 1) {
- unsigned new_size = 2 * n_size * sizeof(irn_live[0]);
- struct _be_lv_info_t *nw = phase_alloc(&li->ph, new_size);
- memcpy(nw, irn_live, new_size);
- nw[0].u.head.n_size = new_size;
+ if (n_members + 1 >= n_size) {
+ /* double the array size. Remember that the first entry is
+ * metadata about the array and not a real array element */
+ unsigned old_size_bytes = (n_size + 1) * sizeof(irn_live[0]);
+ unsigned new_size = (2 * n_size) + 1;
+ size_t new_size_bytes = new_size * sizeof(irn_live[0]);
+ struct _be_lv_info_t *nw = phase_alloc(&li->ph, new_size_bytes);
+ memcpy(nw, irn_live, old_size_bytes);
+ memset(((char*) nw) + old_size_bytes, 0,
+ new_size_bytes - old_size_bytes);
+ nw[0].u.head.n_size = new_size - 1;
irn_live = nw;
- phase_set_irn_data(&li->ph, irn, nw);
+ phase_set_irn_data(&li->ph, bl, nw);
}
payload = &irn_live[1];
- for(i = n_members; i > pos; --i) {
+ for (i = n_members; i > pos; --i) {
payload[i] = payload[i - 1];
}
unsigned last = 0;
struct _be_lv_info_t *payload = &irn_live[1];
- for(i = 0; i < n; ++i) {
+ for (i = 0; i < n; ++i) {
assert(payload[i].u.node.idx >= last);
last = payload[i].u.node.idx;
}
* Removes a node from the list of live variables of a block.
* @return 1 if the node was live at that block, 0 if not.
*/
-static int be_lv_remove(struct _be_lv_t *li, ir_node *bl, ir_node *irn)
+static int be_lv_remove(struct _be_lv_t *li, const ir_node *bl,
+ const ir_node *irn)
{
struct _be_lv_info_t *irn_live = phase_get_irn_data(&li->ph, bl);
- if(irn_live) {
+ if (irn_live) {
unsigned n = irn_live[0].u.head.n_members;
unsigned idx = get_irn_idx(irn);
unsigned pos = _be_liveness_bsearch(irn_live, idx);
struct _be_lv_info_node_t *res = &payload[pos].u.node;
/* The node is in deed in the block's array. Let's remove it. */
- if(res->idx == idx) {
+ if (res->idx == idx) {
unsigned i;
- for(i = pos + 1; i < n; ++i)
+ for (i = pos + 1; i < n; ++i)
payload[i - 1] = payload[i];
payload[n - 1].u.node.idx = 0;
static void register_node(be_lv_t *lv, const ir_node *irn)
{
unsigned idx = get_irn_idx(irn);
- if(idx >= bitset_size(lv->nodes)) {
+ if (idx >= bitset_size(lv->nodes)) {
bitset_t *nw = bitset_malloc(2 * idx);
- bitset_copy(nw, lv->nodes);
+ bitset_copy_into(nw, lv->nodes);
bitset_free(lv->nodes);
lv->nodes = nw;
}
/**
* Mark a node as live-in in a block.
*/
-static INLINE void mark_live_in(be_lv_t *lv, ir_node *block, ir_node *irn)
+static inline void mark_live_in(be_lv_t *lv, ir_node *block, ir_node *irn)
{
struct _be_lv_info_node_t *n = be_lv_get_or_set(lv, block, irn);
DBG((dbg, LEVEL_2, "marking %+F live in at %+F\n", irn, block));
/**
* Mark a node as live-out in a block.
*/
-static INLINE void mark_live_out(be_lv_t *lv, ir_node *block, ir_node *irn)
+static inline void mark_live_out(be_lv_t *lv, ir_node *block, ir_node *irn)
{
struct _be_lv_info_node_t *n = be_lv_get_or_set(lv, block, irn);
DBG((dbg, LEVEL_2, "marking %+F live out at %+F\n", irn, block));
/**
* Mark a node as live-end in a block.
*/
-static INLINE void mark_live_end(be_lv_t *lv, ir_node *block, ir_node *irn)
+static inline void mark_live_end(be_lv_t *lv, ir_node *block, ir_node *irn)
{
struct _be_lv_info_node_t *n = be_lv_get_or_set(lv, block, irn);
DBG((dbg, LEVEL_2, "marking %+F live end at %+F\n", irn, block));
register_node(lv, irn);
}
+static struct {
+ be_lv_t *lv; /**< The liveness object. */
+ ir_node *def; /**< The node (value). */
+ ir_node *def_block; /**< The block of def. */
+ bitset_t *visited; /**< A set were all visited blocks are recorded. */
+} re;
+
/**
* Mark a node (value) live out at a certain block. Do this also
* transitively, i.e. if the block is not the block of the value's
* definition, all predecessors are also marked live.
- * @param def The node (value).
* @param block The block to mark the value live out of.
- * @param visited A set were all visited blocks are recorded.
* @param is_true_out Is the node real out there or only live at the end
* of the block.
*/
-static void live_end_at_block(be_lv_t *lv, ir_node *def, ir_node *block, bitset_t *visited, int is_true_out)
+static void live_end_at_block(ir_node *block, int is_true_out)
{
+ be_lv_t *lv = re.lv;
+ ir_node *def = re.def;
+ bitset_t *visited;
+
mark_live_end(lv, block, def);
- if(is_true_out)
+ if (is_true_out)
mark_live_out(lv, block, def);
- if(!bitset_contains_irn(visited, block)) {
+ visited = re.visited;
+ if (!bitset_contains_irn(visited, block)) {
bitset_add_irn(visited, block);
/*
- * If this block is not the definition block, we have to go up
- * further.
- */
- if(get_nodes_block(def) != block) {
- int i, n;
+ * If this block is not the definition block, we have to go up
+ * further.
+ */
+ if (re.def_block != block) {
+ int i;
mark_live_in(lv, block, def);
- for(i = 0, n = get_Block_n_cfgpreds(block); i < n; ++i)
- live_end_at_block(lv, def, get_Block_cfgpred_block(block, i), visited, 1);
+ for (i = get_Block_n_cfgpreds(block) - 1; i >= 0; --i)
+ live_end_at_block(get_Block_cfgpred_block(block, i), 1);
}
-
}
}
-struct _lv_walker_t {
+typedef struct _lv_walker_t {
be_lv_t *lv;
void *data;
-};
+} lv_walker_t;
+
+typedef struct lv_remove_walker_t {
+ be_lv_t *lv;
+ const ir_node *irn;
+} lv_remove_walker_t;
+
/**
* Liveness analysis for a value.
- * This functions is meant to be called by a firm walker, to compute the
- * set of all blocks a value is live in.
- * @param irn The node (value).
- * @param env Ignored.
+ * Compute the set of all blocks a value is live in.
+ * @param irn The node (value).
*/
-static void liveness_for_node(ir_node *irn, void *data)
+static void liveness_for_node(ir_node *irn)
{
- struct _lv_walker_t *walker = data;
- be_lv_t *lv = walker->lv;
- bitset_t *visited = walker->data;
const ir_edge_t *edge;
ir_node *def_block;
- /* Don't compute liveness information for non-data nodes. */
- if(!is_liveness_node(irn))
- return;
-
- bitset_clear_all(visited);
+ bitset_clear_all(re.visited);
def_block = get_nodes_block(irn);
+ re.def = irn;
+ re.def_block = def_block;
+
/* Go over all uses of the value */
foreach_out_edge(irn, edge) {
ir_node *use = edge->src;
ir_node *use_block;
+ DBG((dbg, LEVEL_4, "%+F: use at %+F, pos %d in %+F\n", irn, use, edge->pos, get_block(use)));
+ assert(get_irn_n(use, edge->pos) == irn);
+
/*
* If the usage is no data node, skip this use, since it does not
* affect the liveness of the node.
*/
- if(!is_liveness_node(use))
+ if (!is_liveness_node(use))
continue;
/* Get the block where the usage is in. */
* through which the value reaches the phi function and mark the
* value as live out of that block.
*/
- if(is_Phi(use)) {
+ if (is_Phi(use)) {
ir_node *pred_block = get_Block_cfgpred_block(use_block, edge->pos);
- live_end_at_block(lv, irn, pred_block, visited, 0);
+ live_end_at_block(pred_block, 0);
}
/*
* Else, the value is live in at this block. Mark it and call live
* out on the predecessors.
*/
- else if(def_block != use_block) {
- int i, n;
+ else if (def_block != use_block) {
+ int i;
- mark_live_in(lv, use_block, irn);
+ mark_live_in(re.lv, use_block, irn);
- for(i = 0, n = get_Block_n_cfgpreds(use_block); i < n; ++i) {
+ for (i = get_Block_n_cfgpreds(use_block) - 1; i >= 0; --i) {
ir_node *pred_block = get_Block_cfgpred_block(use_block, i);
- live_end_at_block(lv, irn, pred_block, visited, 1);
+ live_end_at_block(pred_block, 1);
}
}
}
static void lv_remove_irn_walker(ir_node *bl, void *data)
{
- struct _lv_walker_t *w = data;
- be_lv_t *lv = w->lv;
- ir_node *irn = w->data;
- be_lv_remove(lv, bl, irn);
+ lv_remove_walker_t *w = data;
+ be_lv_remove(w->lv, bl, w->irn);
}
static const char *lv_flags_to_str(unsigned flags)
static void lv_dump_block(void *context, FILE *f, const ir_node *bl)
{
- if(is_Block(bl)) {
+ if (is_Block(bl)) {
be_lv_t *lv = context;
struct _be_lv_info_t *info = phase_get_irn_data(&lv->ph, bl);
fprintf(f, "liveness:\n");
- if(info) {
+ if (info) {
unsigned n = info[0].u.head.n_members;
unsigned i;
- for(i = 0; i < n; ++i) {
+ for (i = 0; i < n; ++i) {
struct _be_lv_info_node_t *n = &info[i+1].u.node;
ir_fprintf(f, "%s %+F\n", lv_flags_to_str(n->flags), get_idx_irn(lv->irg, n->idx));
}
}
}
-static void *lv_phase_data_init(ir_phase *phase, ir_node *irn, void *old)
+static void *lv_phase_data_init(ir_phase *phase, const ir_node *irn)
{
struct _be_lv_info_t *info = phase_alloc(phase, LV_STD_SIZE * sizeof(info[0]));
+ (void) irn;
+
memset(info, 0, LV_STD_SIZE * sizeof(info[0]));
info[0].u.head.n_size = LV_STD_SIZE - 1;
return info;
}
+/**
+ * Walker, collect all nodes for which we want calculate liveness info
+ * on an obstack.
+ */
+static void collect_liveness_nodes(ir_node *irn, void *data)
+{
+ ir_node **nodes = data;
+ if (is_liveness_node(irn))
+ nodes[get_irn_idx(irn)] = irn;
+}
+
static void compute_liveness(be_lv_t *lv)
{
- struct _lv_walker_t w;
- w.lv = lv;
- w.data = bitset_malloc(get_irg_last_idx(lv->irg));
- irg_walk_graph(lv->irg, liveness_for_node, NULL, &w);
- bitset_free(w.data);
+ ir_node **nodes;
+ int i, n;
+
+ stat_ev_tim_push();
+ n = get_irg_last_idx(lv->irg);
+ nodes = NEW_ARR_F(ir_node *, n);
+ memset(nodes, 0, sizeof(nodes[0]) * n);
+
+ /*
+ * inserting the variables sorted by their ID is probably
+ * more efficient since the binary sorted set insertion
+ * will not need to move around the data.
+ */
+ irg_walk_graph(lv->irg, NULL, collect_liveness_nodes, nodes);
+
+ re.lv = lv;
+ re.visited = bitset_malloc(n);
+
+ for (i = 0; i < n; ++i) {
+ if (nodes[i] != NULL)
+ liveness_for_node(nodes[i]);
+ }
+
+ DEL_ARR_F(nodes);
+ free(re.visited);
+ register_hook(hook_node_info, &lv->hook_info);
+ stat_ev_tim_pop("be_lv_sets_cons");
+}
+
+void be_liveness_assure_sets(be_lv_t *lv)
+{
+ if (!lv->nodes) {
+ be_timer_push(T_LIVE);
+
+ lv->nodes = bitset_malloc(2 * get_irg_last_idx(lv->irg));
+ phase_init(&lv->ph, lv->irg, lv_phase_data_init);
+ compute_liveness(lv);
+ /* be_live_chk_compare(lv, lv->lvc); */
+
+ be_timer_pop(T_LIVE);
+ }
+}
+
+void be_liveness_assure_chk(be_lv_t *lv)
+{
+#ifndef USE_LIVE_CHK
+ be_timer_push(t_verify);
+ be_liveness_assure_sets(lv);
+ be_timer_pop(t_verify);
+#else
+ (void) lv;
+#endif
+}
+
+void be_liveness_invalidate(be_lv_t *lv)
+{
+ if (lv && lv->nodes) {
+ unregister_hook(hook_node_info, &lv->hook_info);
+ phase_deinit(&lv->ph);
+ bitset_free(lv->nodes);
+ lv->nodes = NULL;
+ }
}
/* Compute the inter block liveness for a graph. */
be_lv_t *be_liveness(ir_graph *irg)
{
- be_lv_t *lv = xmalloc(sizeof(lv[0]));
+ be_lv_t *lv = XMALLOCZ(be_lv_t);
- memset(lv, 0, sizeof(lv[0]));
- lv->irg = irg;
- lv->nodes = bitset_malloc(2 * get_irg_last_idx(irg));
+ lv->irg = irg;
+#ifdef USE_LIVE_CHK
+ lv->dfs = dfs_new(&absgraph_irg_cfg_succ, irg);
+ lv->lvc = lv_chk_new(lv->irg, lv->dfs);
+#endif
lv->hook_info.context = lv;
lv->hook_info.hook._hook_node_info = lv_dump_block;
- register_hook(hook_node_info, &lv->hook_info);
- phase_init(&lv->ph, "liveness", irg, PHASE_DEFAULT_GROWTH, lv_phase_data_init, NULL);
- compute_liveness(lv);
return lv;
}
void be_liveness_recompute(be_lv_t *lv)
{
- unsigned last_idx = get_irg_last_idx(lv->irg);
- if(last_idx >= bitset_size(lv->nodes)) {
+ unsigned last_idx;
+
+ be_timer_push(T_LIVE);
+ last_idx = get_irg_last_idx(lv->irg);
+ if (last_idx >= bitset_size(lv->nodes)) {
bitset_free(lv->nodes);
lv->nodes = bitset_malloc(last_idx * 2);
- }
-
- else
+ } else
bitset_clear_all(lv->nodes);
- phase_free(&lv->ph);
- phase_init(&lv->ph, "liveness", lv->irg, PHASE_DEFAULT_GROWTH, lv_phase_data_init, NULL);
+ phase_deinit(&lv->ph);
+ phase_init(&lv->ph, lv->irg, lv_phase_data_init);
compute_liveness(lv);
+
+ be_timer_pop(T_LIVE);
}
void be_liveness_free(be_lv_t *lv)
{
- unregister_hook(hook_node_info, &lv->hook_info);
- phase_free(&lv->ph);
- bitset_free(lv->nodes);
- free(lv);
+ be_liveness_invalidate(lv);
+#ifdef USE_LIVE_CHK
+ lv_chk_free(lv->lvc);
+ dfs_free(lv->dfs);
+#endif
+ xfree(lv);
}
-void be_liveness_remove(be_lv_t *lv, ir_node *irn)
+void be_liveness_remove(be_lv_t *lv, const ir_node *irn)
{
- unsigned idx = get_irn_idx(irn);
- struct _lv_walker_t w;
+ if (lv->nodes) {
+ unsigned idx = get_irn_idx(irn);
+ lv_remove_walker_t w;
- /*
- * Removes a single irn from the liveness information.
- * Since an irn can only be live at blocks dominated by the block of its
- * definition, we only have to process that dominance subtree.
- */
- w.lv = lv;
- w.data = irn;
- dom_tree_walk(get_nodes_block(irn), lv_remove_irn_walker, NULL, &w);
- if(idx < bitset_size(lv->nodes))
- bitset_clear(lv->nodes, idx);
+ /*
+ * Removes a single irn from the liveness information.
+ * Since an irn can only be live at blocks dominated by the block of its
+ * definition, we only have to process that dominance subtree.
+ */
+ w.lv = lv;
+ w.irn = irn;
+ dom_tree_walk(get_nodes_block(irn), lv_remove_irn_walker, NULL, &w);
+ if (idx < bitset_size(lv->nodes))
+ bitset_clear(lv->nodes, idx);
+ }
}
void be_liveness_introduce(be_lv_t *lv, ir_node *irn)
{
- struct _lv_walker_t w;
- w.lv = lv;
- w.data = bitset_malloc(get_irg_last_idx(lv->irg));
- liveness_for_node(irn, &w);
- bitset_free(w.data);
+ /* Don't compute liveness information for non-data nodes. */
+ if (lv->nodes && is_liveness_node(irn)) {
+ re.lv = lv;
+ re.visited = bitset_malloc(get_irg_last_idx(lv->irg));
+ liveness_for_node(irn);
+ bitset_free(re.visited);
+ }
}
void be_liveness_update(be_lv_t *lv, ir_node *irn)
be_liveness_introduce(lv, irn);
}
-static void lv_add_missing_walker(ir_node *irn, void *data)
-{
- struct _lv_walker_t *w = data;
- if(!is_Block(irn) && !bitset_contains_irn(w->lv->nodes, irn)) {
- liveness_for_node(irn, w);
- }
-}
-
-void be_liveness_add_missing(be_lv_t *lv)
-{
- struct _lv_walker_t w;
- w.lv = lv;
- w.data = bitset_malloc(get_irg_last_idx(lv->irg));
- irg_walk_graph(lv->irg, lv_add_missing_walker, NULL, &w);
- bitset_free(w.data);
-}
-
static void lv_check_walker(ir_node *bl, void *data)
{
- struct _lv_walker_t *w = data;
+ lv_walker_t *w = data;
be_lv_t *lv = w->lv;
be_lv_t *fresh = w->data;
struct _be_lv_info_t *curr = phase_get_irn_data(&lv->ph, bl);
struct _be_lv_info_t *fr = phase_get_irn_data(&fresh->ph, bl);
- if(!fr && curr && curr[0].u.head.n_members > 0) {
+ if (!fr && curr && curr[0].u.head.n_members > 0) {
unsigned i;
ir_fprintf(stderr, "%+F liveness should be empty but current liveness contains:\n", bl);
- for(i = 0; i < curr[0].u.head.n_members; ++i) {
+ for (i = 0; i < curr[0].u.head.n_members; ++i) {
ir_fprintf(stderr, "\t%+F\n", get_idx_irn(lv->irg, curr[1 + i].u.node.idx));
}
}
- else if(curr) {
+ else if (curr) {
unsigned n_curr = curr[0].u.head.n_members;
unsigned n_fresh = fr[0].u.head.n_members;
unsigned i;
- if(n_curr != n_fresh) {
+ if (n_curr != n_fresh) {
ir_fprintf(stderr, "%+F: liveness set sizes differ. curr %d, correct %d\n", bl, n_curr, n_fresh);
ir_fprintf(stderr, "current:\n");
- for(i = 0; i < n_curr; ++i) {
+ for (i = 0; i < n_curr; ++i) {
struct _be_lv_info_node_t *n = &curr[1 + i].u.node;
ir_fprintf(stderr, "%+F %u %+F %s\n", bl, i, get_idx_irn(lv->irg, n->idx), lv_flags_to_str(n->flags));
}
ir_fprintf(stderr, "correct:\n");
- for(i = 0; i < n_fresh; ++i) {
+ for (i = 0; i < n_fresh; ++i) {
struct _be_lv_info_node_t *n = &fr[1 + i].u.node;
ir_fprintf(stderr, "%+F %u %+F %s\n", bl, i, get_idx_irn(lv->irg, n->idx), lv_flags_to_str(n->flags));
}
void be_liveness_check(be_lv_t *lv)
{
- struct _lv_walker_t w;
+ lv_walker_t w;
be_lv_t *fresh = be_liveness(lv->irg);
w.lv = lv;
static void lv_dump_block_walker(ir_node *irn, void *data)
{
- struct _lv_walker_t *w = data;
- if(is_Block(irn))
+ lv_walker_t *w = data;
+ if (is_Block(irn))
lv_dump_block(w->lv, w->data, irn);
}
/* Dump the liveness information for a graph. */
void be_liveness_dump(const be_lv_t *lv, FILE *f)
{
- struct _lv_walker_t w;
+ lv_walker_t w;
w.lv = (be_lv_t *) lv;
w.data = f;
FILE *f;
char buf[128];
ir_snprintf(buf, sizeof(buf), "%F_%s-live.txt", lv->irg, cls_name);
- if((f = fopen(buf, "wt")) != NULL) {
+ if ((f = fopen(buf, "wt")) != NULL) {
be_liveness_dump(lv, f);
fclose(f);
}
{
int *problem_found = data;
- if(!is_Block(irn) && irn != get_irg_end(get_irn_irg(irn))) {
+ if (!is_Block(irn) && irn != get_irg_end(get_irn_irg(irn))) {
int i, n;
ir_node *bl = get_nodes_block(irn);
- for(i = 0, n = get_irn_arity(irn); i < n; ++i) {
+ for (i = 0, n = get_irn_arity(irn); i < n; ++i) {
ir_node *op = get_irn_n(irn, i);
ir_node *def_bl = get_nodes_block(op);
ir_node *use_bl = bl;
- if(is_Phi(irn))
+ if (is_Phi(irn))
use_bl = get_Block_cfgpred_block(bl, i);
- if(get_irn_opcode(use_bl) != iro_Bad
+ if (get_irn_opcode(use_bl) != iro_Bad
&& get_irn_opcode(def_bl) != iro_Bad
&& !block_dominates(def_bl, use_bl)) {
ir_fprintf(stderr, "Verify warning: %+F in %+F must dominate %+F for user %+F (%s)\n", op, def_bl, use_bl, irn, get_irg_dump_name(get_irn_irg(op)));
return !problem_found;
}
-pset *be_liveness_transfer(const arch_env_t *arch_env, const arch_register_class_t *cls, ir_node *irn, pset *live)
+void be_liveness_transfer(const arch_register_class_t *cls,
+ ir_node *node, ir_nodeset_t *nodeset)
{
- int i, n;
+ int i, arity;
- /* You should better break out of your loop when hitting the first phi function. */
- assert(!is_Phi(irn) && "liveness_transfer produces invalid results for phi nodes");
+ /* You should better break out of your loop when hitting the first phi
+ * function. */
+ assert(!is_Phi(node) && "liveness_transfer produces invalid results for phi nodes");
- if(arch_irn_consider_in_reg_alloc(arch_env, cls, irn)) {
- ir_node *del = pset_remove_ptr(live, irn);
- (void) del;
- assert(irn == del);
- }
+ if (get_irn_mode(node) == mode_T) {
+ const ir_edge_t *edge;
- for(i = 0, n = get_irn_arity(irn); i < n; ++i) {
- ir_node *op = get_irn_n(irn, i);
+ foreach_out_edge(node, edge) {
+ ir_node *proj = get_edge_src_irn(edge);
- if(arch_irn_consider_in_reg_alloc(arch_env, cls, op))
- pset_insert_ptr(live, op);
+ if (arch_irn_consider_in_reg_alloc(cls, proj)) {
+ ir_nodeset_remove(nodeset, proj);
+ }
+ }
+ } else if (arch_irn_consider_in_reg_alloc(cls, node)) {
+ ir_nodeset_remove(nodeset, node);
}
- return live;
+ arity = get_irn_arity(node);
+ for (i = 0; i < arity; ++i) {
+ ir_node *op = get_irn_n(node, i);
+
+ if (arch_irn_consider_in_reg_alloc(cls, op))
+ ir_nodeset_insert(nodeset, op);
+ }
}
-pset *be_liveness_end_of_block(const be_lv_t *lv, const arch_env_t *arch_env, const arch_register_class_t *cls, const ir_node *bl, pset *live)
+
+
+void be_liveness_end_of_block(const be_lv_t *lv,
+ const arch_register_class_t *cls,
+ const ir_node *block, ir_nodeset_t *live)
{
int i;
- be_lv_foreach(lv, bl, be_lv_state_end, i) {
- ir_node *irn = be_lv_get_irn(lv, bl, i);
- if(arch_irn_consider_in_reg_alloc(arch_env, cls, irn))
- pset_insert_ptr(live, irn);
- }
- return live;
+ assert(lv->nodes && "live sets must be computed");
+ be_lv_foreach(lv, block, be_lv_state_end, i) {
+ ir_node *node = be_lv_get_irn(lv, block, i);
+ if (!arch_irn_consider_in_reg_alloc(cls, node))
+ continue;
+
+ ir_nodeset_insert(live, node);
+ }
}
-pset *be_liveness_nodes_live_at(const be_lv_t *lv, const arch_env_t *arch_env, const arch_register_class_t *cls, const ir_node *pos, pset *live)
+
+
+void be_liveness_nodes_live_at(const be_lv_t *lv,
+ const arch_register_class_t *cls,
+ const ir_node *pos, ir_nodeset_t *live)
{
const ir_node *bl = is_Block(pos) ? pos : get_nodes_block(pos);
ir_node *irn;
- be_liveness_end_of_block(lv, arch_env, cls, bl, live);
+ be_liveness_end_of_block(lv, cls, bl, live);
sched_foreach_reverse(bl, irn) {
/*
* If we encounter the node we want to insert the Perm after,
* exit immediately, so that this node is still live
*/
- if(irn == pos)
- return live;
+ if (irn == pos)
+ return;
- be_liveness_transfer(arch_env, cls, irn, live);
+ be_liveness_transfer(cls, irn, live);
}
+}
- return live;
+static void collect_node(ir_node *irn, void *data)
+{
+ struct obstack *obst = data;
+ obstack_ptr_grow(obst, irn);
}
-pset *be_liveness_nodes_live_at_input(const be_lv_t *lv, const arch_env_t *arch_env, const arch_register_class_t *cls, const ir_node *pos, pset *live)
+void be_live_chk_compare(be_lv_t *lv, lv_chk_t *lvc)
{
- const ir_node *bl = is_Block(pos) ? pos : get_nodes_block(pos);
- ir_node *irn;
+ ir_graph *irg = lv->irg;
- be_liveness_end_of_block(lv, arch_env, cls, bl, live);
- sched_foreach_reverse(bl, irn) {
- be_liveness_transfer(arch_env, cls, irn, live);
- if(irn == pos)
- return live;
+ struct obstack obst;
+ ir_node **nodes;
+ ir_node **blocks;
+ int i, j;
+
+ obstack_init(&obst);
+
+ irg_block_walk_graph(irg, collect_node, NULL, &obst);
+ obstack_ptr_grow(&obst, NULL);
+ blocks = obstack_finish(&obst);
+
+ irg_walk_graph(irg, collect_node, NULL, &obst);
+ obstack_ptr_grow(&obst, NULL);
+ nodes = obstack_finish(&obst);
+
+ stat_ev_ctx_push("be_lv_chk_compare");
+ for (j = 0; nodes[j]; ++j) {
+ ir_node *irn = nodes[j];
+ for (i = 0; blocks[i]; ++i) {
+ ir_node *bl = blocks[i];
+
+ if (!is_Block(irn)) {
+ int lvr_in = be_is_live_in (lv, bl, irn);
+ int lvr_out = be_is_live_out(lv, bl, irn);
+ int lvr_end = be_is_live_end(lv, bl, irn);
+
+ int lvc_in = lv_chk_bl_in (lvc, bl, irn);
+ int lvc_out = lv_chk_bl_out(lvc, bl, irn);
+ int lvc_end = lv_chk_bl_end(lvc, bl, irn);
+
+ if (lvr_in - lvc_in != 0)
+ ir_fprintf(stderr, "live in info for %+F at %+F differs: nml: %d, chk: %d\n", irn, bl, lvr_in, lvc_in);
+
+ if (lvr_end - lvc_end != 0)
+ ir_fprintf(stderr, "live end info for %+F at %+F differs: nml: %d, chk: %d\n", irn, bl, lvr_end, lvc_end);
+
+ if (lvr_out - lvc_out != 0)
+ ir_fprintf(stderr, "live out info for %+F at %+F differs: nml: %d, chk: %d\n", irn, bl, lvr_out, lvc_out);
+ }
+ }
}
+ stat_ev_ctx_pop("be_lv_chk_compare");
- return live;
+ obstack_free(&obst, NULL);
}
+BE_REGISTER_MODULE_CONSTRUCTOR(be_init_live);
void be_init_live(void)
{
FIRM_DBG_REGISTER(dbg, "firm.be.liveness");
}
-
-BE_REGISTER_MODULE_CONSTRUCTOR(be_init_live);
projects / libfirm / blobdiff