* @file
* @brief implementation of the spill/reload placement abstraction layer
* @author Daniel Grund, Sebastian Hack, Matthias Braun
- * @date 29.09.2005
+ * @date 29.09.2005
* @version $Id$
*/
#include "config.h"
#include "bestatevent.h"
#include "bessaconstr.h"
#include "beirg.h"
+#include "beirgmod.h"
#include "beintlive_t.h"
#include "bemodule.h"
#include "be_t.h"
ir_nodeset_t mem_phis; /**< set of all spilled phis. */
ir_exec_freq *exec_freq;
-#ifdef FIRM_STATISTICS
unsigned spill_count;
unsigned reload_count;
unsigned remat_count;
unsigned spilled_phi_count;
-#endif
};
/**
*/
static int cmp_spillinfo(const void *x, const void *y, size_t size)
{
- const spill_info_t *xx = x;
- const spill_info_t *yy = y;
+ const spill_info_t *xx = (const spill_info_t*)x;
+ const spill_info_t *yy = (const spill_info_t*)y;
(void) size;
return xx->to_spill != yy->to_spill;
int hash = hash_irn(value);
info.to_spill = value;
- res = set_find(env->spills, &info, sizeof(info), hash);
+ res = (spill_info_t*)set_find(env->spills, &info, sizeof(info), hash);
if (res == NULL) {
info.reloaders = NULL;
info.spills = NULL;
info.spill_costs = -1;
info.reload_cls = NULL;
- res = set_insert(env->spills, &info, sizeof(info), hash);
+ res = (spill_info_t*)set_insert(env->spills, &info, sizeof(info), hash);
}
return res;
const arch_env_t *arch_env = be_get_irg_arch_env(irg);
spill_env_t *env = XMALLOC(spill_env_t);
- env->spills = new_set(cmp_spillinfo, 1024);
+ env->spills = new_set(cmp_spillinfo, 1024);
env->irg = irg;
env->arch_env = arch_env;
ir_nodeset_init(&env->mem_phis);
env->exec_freq = be_get_irg_exec_freq(irg);
obstack_init(&env->obst);
-#ifdef FIRM_STATISTICS
env->spill_count = 0;
env->reload_count = 0;
env->remat_count = 0;
env->spilled_phi_count = 0;
-#endif
return env;
}
spill_info->spills = spill;
}
-void be_add_remat(spill_env_t *env, ir_node *to_spill, ir_node *before,
- ir_node *rematted_node)
-{
- spill_info_t *spill_info;
- reloader_t *reloader;
-
- spill_info = get_spillinfo(env, to_spill);
-
- /* add the remat information */
- reloader = OALLOC(&env->obst, reloader_t);
- reloader->next = spill_info->reloaders;
- reloader->reloader = before;
- reloader->rematted_node = rematted_node;
- reloader->remat_cost_delta = 0; /* We will never have a cost win over a
- reload since we're not even allowed to
- create a reload */
-
- spill_info->reloaders = reloader;
-
- DBG((dbg, LEVEL_1, "creating spillinfo for %+F, will be rematerialized before %+F\n",
- to_spill, before));
-}
-
void be_add_reload2(spill_env_t *env, ir_node *to_spill, ir_node *before,
ir_node *can_spill_after, const arch_register_class_t *reload_cls,
int allow_remat)
return last;
}
-static ir_node *skip_keeps_phis(ir_node *node)
+/**
+ * determine final spill position: it should be after all phis, keep nodes
+ * and behind nodes marked as prolog
+ */
+static ir_node *determine_spill_point(ir_node *node)
{
+ node = skip_Proj(node);
while (true) {
ir_node *next = sched_next(node);
if (!is_Phi(next) && !be_is_Keep(next) && !be_is_CopyKeep(next))
}
void be_add_reload_on_edge(spill_env_t *env, ir_node *to_spill, ir_node *block,
- int pos, const arch_register_class_t *reload_cls,
+ int pos, const arch_register_class_t *reload_cls,
int allow_remat)
{
ir_node *before = get_block_insertion_point(block, pos);
insert = be_get_end_of_block_insertion_point(pred_block);
insert = sched_prev(insert);
} else {
- insert = skip_keeps_phis(arg);
+ insert = determine_spill_point(arg);
}
be_add_spill(env, arg, insert);
* and simply always available. */
if (!sched_is_scheduled(insn)) {
/* override spillinfos or create a new one */
- spillinfo->spills->spill = new_NoMem();
+ ir_graph *irg = get_irn_irg(to_spill);
+ spillinfo->spills->spill = get_irg_no_mem(irg);
DB((dbg, LEVEL_1, "don't spill %+F use NoMem\n", to_spill));
return;
}
ir_node *after = spill->after;
ir_node *block = get_block(after);
- after = skip_keeps_phis(after);
+ after = determine_spill_point(after);
spill->spill = be_spill(block, to_spill);
sched_add_after(skip_Proj(after), spill->spill);
DB((dbg, LEVEL_1, "\t%+F after %+F\n", spill->spill, after));
-#ifdef FIRM_STATISTICS
env->spill_count++;
-#endif
}
DBG((dbg, LEVEL_1, "\n"));
}
/* override or replace spills list... */
spill = OALLOC(&env->obst, spill_t);
- spill->after = skip_keeps_phis(phi);
- spill->spill = new_r_Phi(block, arity, ins, mode_M);
+ spill->after = determine_spill_point(phi);
+ spill->spill = be_new_Phi(block, arity, ins, mode_M, NULL);
spill->next = NULL;
+ sched_add_after(block, spill->spill);
spillinfo->spills = spill;
-#ifdef FIRM_STATISTICS
env->spilled_phi_count++;
-#endif
for (i = 0; i < arity; ++i) {
ir_node *arg = get_irn_n(phi, i);
static int is_value_available(spill_env_t *env, const ir_node *arg,
const ir_node *reloader)
{
- if (is_Unknown(arg) || arg == new_NoMem())
+ if (is_Unknown(arg) || is_NoMem(arg))
return 1;
if (be_is_Spill(skip_Proj_const(arg)))
if (arch_irn_is_ignore(arg))
return 1;
- return 0;
+ return 0;
}
/**
return REMAT_COST_INFINITE;
}
/* never rematerialize a node which modifies the flags.
- * (would be better to test wether the flags are actually live at point
+ * (would be better to test whether the flags are actually live at point
* reloader...)
*/
if (arch_irn_is(insn, modify_flags)) {
/**
* Re-materialize a node.
*
- * @param senv the spill environment
+ * @param env the spill environment
* @param spilled the node that was spilled
* @param reloader a irn that requires a reload
*/
ins[i] = arg;
} else {
ins[i] = do_remat(env, arg, reloader);
-#ifdef FIRM_STATISTICS
/* don't count the recursive call as remat */
env->remat_count--;
-#endif
}
}
/* insert in schedule */
sched_reset(res);
sched_add_before(reloader, res);
-#ifdef FIRM_STATISTICS
env->remat_count++;
-#endif
}
return res;
* predecessor (of a PhiM) but this test might match other things too...
*/
if (!sched_is_scheduled(insn)) {
+ ir_graph *irg = get_irn_irg(to_spill);
/* override spillinfos or create a new one */
spill_t *spill = OALLOC(&env->obst, spill_t);
spill->after = NULL;
spill->next = NULL;
- spill->spill = new_NoMem();
+ spill->spill = get_irg_no_mem(irg);
spillinfo->spills = spill;
spillinfo->spill_costs = 0;
/* override spillinfos or create a new one */
spill = OALLOC(&env->obst, spill_t);
- spill->after = skip_keeps_phis(to_spill);
+ spill->after = determine_spill_point(to_spill);
spill->next = NULL;
spill->spill = NULL;
}
/* process each spilled node */
- for (si = set_first(env->spills); si; si = set_next(env->spills)) {
+ foreach_set(env->spills, spill_info_t*, si) {
reloader_t *rld;
ir_node *to_spill = si->to_spill;
ir_mode *mode = get_irn_mode(to_spill);
assert(si->spills != NULL);
copy = be_reload(si->reload_cls, rld->reloader, mode,
si->spills->spill);
-#ifdef FIRM_STATISTICS
env->reload_count++;
-#endif
}
DBG((dbg, LEVEL_1, " %+F of %+F before %+F\n",
be_timer_pop(T_RA_SPILL_APPLY);
}
-BE_REGISTER_MODULE_CONSTRUCTOR(be_init_spill);
+BE_REGISTER_MODULE_CONSTRUCTOR(be_init_spill)
void be_init_spill(void)
{
FIRM_DBG_REGISTER(dbg, "firm.be.spill");
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