/*
- * 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
+/* statev is expensive here, only enable when needed */
+#define DISABLE_STATEV
+
#include "impl.h"
#include "iredges_t.h"
#include "irgwalk.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 "beirg_t.h"
#define LV_USE_BINARY_SEARCH
#undef LV_INTESIVE_CHECKS
+void be_live_chk_compare(be_lv_t *lv, lv_chk_t *lvc);
+
static INLINE int is_liveness_node(const ir_node *irn)
{
switch(get_irn_opcode(irn)) {
case iro_Bad:
case iro_End:
case iro_Anchor:
+ case iro_NoMem:
return 0;
default:;
}
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;
+ stat_ev_tim_push();
+ irn_live = phase_get_irn_data(&li->ph, bl);
if(irn_live) {
unsigned idx = get_irn_idx(irn);
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)
* 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);
void *data;
};
+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
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.
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_phase_data_init(ir_phase *phase, ir_node *irn, void *old)
+static void *lv_phase_data_init(ir_phase *phase, const ir_node *irn, void *old)
{
struct _be_lv_info_t *info = phase_alloc(phase, LV_STD_SIZE * sizeof(info[0]));
(void) irn;
ir_node **nodes;
int i, n;
+ stat_ev_tim_push();
obstack_init(&obst);
irg_walk_graph(lv->irg, collect_nodes, NULL, &obst);
n = obstack_object_size(&obst) / sizeof(nodes[0]);
/*
* inserting the variables sorted by their ID is probably
* more efficient since the binary sorted set insertion
- * will not need to move arounf the data.
+ * will not need to move around the data.
* However, if sorting the variables a priori pays off
* needs to be checked, hence the define.
*/
obstack_free(&obst, NULL);
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, "liveness", lv->irg, PHASE_DEFAULT_GROWTH, lv_phase_data_init, NULL);
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
}
/* Compute the inter block liveness for a graph. */
-be_lv_t *be_liveness(ir_graph *irg)
+be_lv_t *be_liveness(const be_irg_t *birg)
{
- 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->irg = be_get_birg_irg(birg);
+ lv->birg = birg;
#ifdef USE_LIVE_CHK
- lv->lvc = lv_chk_new(irg);
+ lv->dfs = dfs_new(&absgraph_irg_cfg_succ, lv->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;
void be_liveness_recompute(be_lv_t *lv)
{
- unsigned last_idx = get_irg_last_idx(lv->irg);
+ 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);
compute_liveness(lv);
+
+ BE_TIMER_POP(t_live);
}
void be_liveness_free(be_lv_t *lv)
{
be_liveness_invalidate(lv);
- free(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)
{
if (lv->nodes) {
unsigned idx = get_irn_idx(irn);
- struct _lv_walker_t w;
+ 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;
+ 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_check(be_lv_t *lv)
{
struct _lv_walker_t w;
- be_lv_t *fresh = be_liveness(lv->irg);
+ be_lv_t *fresh = be_liveness(lv->birg);
w.lv = lv;
w.data = fresh;
return !problem_found;
}
-void be_liveness_transfer(const arch_env_t *arch_env,
- const arch_register_class_t *cls,
+void be_liveness_transfer(const arch_register_class_t *cls,
ir_node *node, ir_nodeset_t *nodeset)
{
int i, arity;
foreach_out_edge(node, edge) {
ir_node *proj = get_edge_src_irn(edge);
- if (arch_irn_consider_in_reg_alloc(arch_env, cls, proj)) {
+ if (arch_irn_consider_in_reg_alloc(cls, proj)) {
ir_nodeset_remove(nodeset, proj);
}
}
- }
-
- if (arch_irn_consider_in_reg_alloc(arch_env, cls, node)) {
+ } else if (arch_irn_consider_in_reg_alloc(cls, node)) {
ir_nodeset_remove(nodeset, node);
}
for (i = 0; i < arity; ++i) {
ir_node *op = get_irn_n(node, i);
- if (arch_irn_consider_in_reg_alloc(arch_env, cls, op))
+ if (arch_irn_consider_in_reg_alloc(cls, op))
ir_nodeset_insert(nodeset, op);
}
}
-void be_liveness_end_of_block(const be_lv_t *lv, const arch_env_t *arch_env,
+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)
{
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(arch_env, cls, node))
+ if (!arch_irn_consider_in_reg_alloc(cls, node))
continue;
ir_nodeset_insert(live, node);
-void be_liveness_nodes_live_at(const be_lv_t *lv, const arch_env_t *arch_env,
+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,
if(irn == pos)
return;
- be_liveness_transfer(arch_env, cls, irn, live);
- }
-}
-
-void 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, ir_nodeset_t *live)
-{
- const ir_node *bl = is_Block(pos) ? pos : get_nodes_block(pos);
- ir_node *irn;
-
- assert(lv->nodes && "live sets must be computed");
- 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;
+ be_liveness_transfer(cls, irn, live);
}
}
obstack_ptr_grow(&obst, NULL);
nodes = obstack_finish(&obst);
- for (i = 0; blocks[i]; ++i) {
- ir_node *bl = blocks[i];
+ 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];
- for (j = 0; nodes[j]; ++j) {
- ir_node *irn = nodes[j];
if (!is_Block(irn)) {
int lvr_in = be_is_live_in (lv, bl, irn);
int lvr_out = be_is_live_out(lv, bl, irn);
}
}
}
-
+ stat_ev_ctx_pop("be_lv_chk_compare");
obstack_free(&obst, NULL);
}
projects / libfirm / blobdiff