#include "besched_t.h"
static firm_dbg_module_t *dbg = NULL;
-#define DEBUG_LVL SET_LEVEL_2
+#define DEBUG_LVL SET_LEVEL_3
#define get_chordal_arch(ce) ((ce)->session_env->main_env->arch_env)
#define get_reg(irn) arch_get_irn_register(get_chordal_arch(chordal_env), irn, 0)
#define set_reg(irn, reg) arch_set_irn_register(get_chordal_arch(chordal_env), irn, 0, reg)
-#define is_Branch(irn) (arch_irn_classify(arch_env, irn) == arch_irn_class_branch)
#define is_Perm(irn) (arch_irn_classify(arch_env, irn) == arch_irn_class_perm)
#define get_reg_cls(irn) (arch_get_irn_reg_class(arch_env, irn, arch_pos_make_out(0)))
#define is_curr_reg_class(irn) (get_reg_cls(p) == chordal_env->cls)
}
static int skip_cf_predicator(const ir_node *irn, void *data) {
- be_chordal_env_t *ce = data;
- arch_env_t *ae = ce->session_env->main_env->arch_env;
+ be_chordal_env_t *chordal_env = data;
+ arch_env_t *ae = chordal_env->session_env->main_env->arch_env;
return arch_irn_classify(ae, irn) == arch_irn_class_branch;
}
+static void insert_all_perms_walker(ir_node *bl, void *data)
+{
+ be_chordal_env_t *chordal_env = data;
+ pmap *perm_map = chordal_env->data;
+ ir_graph *irg = chordal_env->session_env->irg;
+ const be_node_factory_t *fact = chordal_env->session_env->main_env->node_factory;
+
+ /* Dummy targets for the projs */
+ ir_node *dummy = new_rd_Unknown(irg, mode_T);
+
+ assert(is_Block(bl));
+
+ /* If the link flag is NULL, this block has no phis. */
+ if(get_irn_link(bl)) {
+ int i, n;
+
+ /* Look at all predecessors of the phi block */
+ for(i = 0, n = get_irn_arity(bl); i < n; ++i) {
+ ir_node *pred_bl = get_Block_cfgpred_block(bl, i);
+ ir_node *phi, *perm, *insert_after;
+ ir_node **in;
+ int j, n_projs = 0;
+ pmap_entry *ent;
+ pmap *arg_map = pmap_create();
+
+ assert(!pmap_contains(perm_map, pred_bl) && "Already permed that block");
+
+ /*
+ * Note that all phis in the list are in the same register class
+ * by construction.
+ */
+ for(phi = get_irn_link(bl); phi; phi = get_irn_link(phi)) {
+ ir_node *arg = get_irn_n(phi, i);
+ ir_node *proj = pmap_get(arg_map, arg);
+
+ if(!proj) {
+ proj = new_r_Proj(irg, pred_bl, dummy, get_irn_mode(arg), n_projs++);
+ pmap_insert(arg_map, arg, proj);
+ }
+
+ set_irn_n(phi, i, proj);
+ }
+
+ j = 0;
+ in = malloc(n_projs * sizeof(in[0]));
+ pmap_foreach(arg_map, ent) {
+ in[j++] = ent->key;
+ /* register allocation is copied form former arguments
+ * to the projs (new arguments)
+ */
+ DBG((dbg, LEVEL_2, "Copy register assignment %s from %+F to %+F\n", get_reg(ent->key)->name, ent->key, ent->value));
+ set_reg(ent->value, get_reg(ent->key));
+ }
+
+ perm = new_Perm(fact, chordal_env->cls, irg, pred_bl, n_projs, in);
+ insert_after = sched_skip(sched_last(pred_bl), 0, skip_cf_predicator, chordal_env);
+ sched_add_after(insert_after, perm);
+ exchange(dummy, perm);
+
+ free(in);
+ pmap_destroy(arg_map);
+
+ /* register in perm map */
+ pmap_insert(perm_map, pred_bl, perm);
+ }
+ }
+}
+
+static void insert_all_perms(be_chordal_env_t *chordal_env) {
+ DBG((dbg, LEVEL_1, "Placing perms...\n"));
+ irg_block_walk_graph(chordal_env->session_env->irg, insert_all_perms_walker, NULL, chordal_env);
+}
+
#define is_pinned(irn) (get_irn_link(irn))
#define get_pinning_block(irn) ((ir_node *)get_irn_link(irn))
#define pin_irn(irn, lock) (set_irn_link(irn, lock))
static void adjust_phi_arguments(be_chordal_env_t *chordal_env, ir_node *phi) {
int i, max;
ir_node *arg, *phi_block, *arg_block;
- arch_env_t *arch_env = get_chordal_arch(chordal_env);
- const be_main_session_env_t *session = chordal_env->session_env;
+ const be_main_session_env_t *session = chordal_env->session_env;
const arch_register_t *phi_reg, *arg_reg;
const arch_register_class_t *cls;
ir_node *perm;
arg = get_irn_n(phi, i);
+ assert(is_Proj(arg));
arg_block = get_nodes_block(arg);
arg_reg = get_reg(arg);
+ assert(arg_reg && "Register must be set while placing perms");
+ DBG((dbg, LEVEL_3, "%+F has register %s assigned\n", arg, arg_reg->name));
perm = get_Proj_pred(arg);
- // assert(is_Perm(perm));
+ //TODO reenable this if classify is implemented. assert(is_Perm(perm));
DBG((dbg, LEVEL_1, " arg %+F has perm %+F\n", arg, perm));
/* if registers don't match ...*/
if (phi_reg != arg_reg) {
- DBG((dbg, LEVEL_1, " regs don't match %d %d\n", phi_reg, arg_reg));
+ DBG((dbg, LEVEL_1, " regs don't match %d %d\n", phi_reg->name, arg_reg->name));
/* First check if there is another phi in the same block
* having arg at the same pos in its arg-list and the same color as arg */
if (!is_pinned(arg)) {
- DBG((dbg, LEVEL_1, " arg is not pinned\n"));
+ DBG((dbg, LEVEL_1, " arg is not pinned\n"));
ir_node *other_phi = phi;
- for(other_phi = get_irn_link(phi_block); other_phi; other_phi = get_irn_link(other_phi)) {
- if(other_phi == phi)
- continue;
+ for(other_phi = get_irn_link(phi_block); other_phi; other_phi = get_irn_link(other_phi)) {
+ if(other_phi == phi)
+ continue;
assert(is_Phi(other_phi) && get_nodes_block(phi) == get_nodes_block(other_phi) && "link fields are screwed up");
if (get_irn_n(other_phi, i) == arg && get_reg(other_phi) == arg_reg) {
- DBG((dbg, LEVEL_1, " other phi pinned the argument\n"));
+ DBG((dbg, LEVEL_1, " but other phi (%+F) just pinned it\n", other_phi));
pin_irn(arg, phi_block);
}
}
dupl = new_Copy(session->main_env->node_factory, cls, session->irg, arg_block, arg);
set_irn_n(phi, i, dupl);
set_reg(dupl, phi_reg);
- DBG((dbg, LEVEL_1, " inserting dupl %+F\n", dupl));
+ DBG((dbg, LEVEL_1, " arg is pinned so insert dupl %+F\n", dupl));
/* Add dupl to schedule */
tmp = sched_next(perm);
tmp = sched_next(tmp);
sched_add_after(tmp, dupl);
- /* Add dupl to chained list of duplicates. Ptrs starting at the Perm */
- tmp = perm;
- while (get_irn_link(tmp))
- tmp = get_irn_link(tmp);
- set_irn_link(tmp, dupl);
- set_irn_link(dupl, NULL);
-
/* now the arg is the dupl */
arg = dupl;
} else {
* livein(PhiBl) = liveout(ArgBl), if all phis are processed then
* every color is used exactly once.
*/
- DBG((dbg, LEVEL_1, " just set color\n"));
+ DBG((dbg, LEVEL_1, " arg is not pinned so just set register to %s\n", phi_reg->name));
set_reg(arg, phi_reg);
}
+ } else {
+ DBG((dbg, LEVEL_1, " regs match %d\n"));
}
/* Now the color of the arg (arg may be a dupl now) and the phi-result are equal.
}
}
-static void insert_all_perms_walker(ir_node *bl, void *data)
-{
- be_chordal_env_t *ce = data;
- pmap *perm_map = ce->data;
- ir_graph *irg = ce->session_env->irg;
- const be_node_factory_t *fact = ce->session_env->main_env->node_factory;
-
- /* Dummy targets for the projs */
- ir_node *dummy = new_rd_Unknown(irg, mode_T);
-
- assert(is_Block(bl));
-
- /* If the link flag is NULL, this block has no phis. */
- if(get_irn_link(bl)) {
- int i, n;
-
- /* Look at all predecessors of the phi block */
- for(i = 0, n = get_irn_arity(bl); i < n; ++i) {
- ir_node *pred_bl = get_Block_cfgpred_block(bl, i);
- ir_node *phi, *perm, *insert_after;
- ir_node **in;
- int j, n_projs = 0;
- pmap_entry *ent;
- pmap *arg_map = pmap_create();
-
- assert(!pmap_contains(perm_map, pred_bl) && "Already permed that block");
-
- /*
- * Note that all phis in the ring are in the same register class
- * by construction.
- */
- for(phi = get_irn_link(bl); phi; phi = get_irn_link(phi)) {
- ir_node *arg = get_irn_n(phi, i);
- ir_node *proj = pmap_get(arg_map, arg);
-
- if(!proj) {
- proj = new_r_Proj(irg, pred_bl, dummy, get_irn_mode(arg), n_projs++);
- pmap_insert(arg_map, arg, proj);
- }
-
- set_irn_n(phi, i, proj);
- }
-
- j = 0;
- in = malloc(n_projs * sizeof(in[0]));
- pmap_foreach(arg_map, ent)
- in[j++] = ent->key;
-
- perm = new_Perm(fact, ce->cls, irg, pred_bl, n_projs, in);
- insert_after = sched_skip(sched_last(pred_bl), 0, skip_cf_predicator, ce);
- sched_add_after(insert_after, perm);
- exchange(dummy, perm);
-
- free(in);
- pmap_destroy(arg_map);
-
- /* register in perm map */
- pmap_insert(perm_map, pred_bl, perm);
- }
- }
-}
-
-static void insert_all_perms(be_chordal_env_t *chordal_env) {
- DBG((dbg, LEVEL_1, "Placing perms...\n"));
- irg_block_walk_graph(chordal_env->session_env->irg, insert_all_perms_walker, NULL, chordal_env);
-}
-
static void set_regs_or_place_dupls_walker(ir_node *bl, void *data) {
- be_chordal_env_t *chordal_env = data;
- ir_node *phi;
+ be_chordal_env_t *chordal_env = data;
+ ir_node *phi;
- DBG((dbg, LEVEL_1, "Setting regs and placing dupls...\n"));
- for(phi = get_irn_link(bl); phi; phi = get_irn_link(phi))
- adjust_phi_arguments(chordal_env, phi);
+ for(phi = get_irn_link(bl); phi; phi = get_irn_link(phi))
+ adjust_phi_arguments(chordal_env, phi);
}
static void set_regs_or_place_dupls(be_chordal_env_t *chordal_env)
{
- irg_block_walk_graph(chordal_env->session_env->irg,
- set_regs_or_place_dupls_walker, NULL, chordal_env);
+ DBG((dbg, LEVEL_1, "Setting regs and placing dupls...\n"));
+ irg_block_walk_graph(chordal_env->session_env->irg,
+ set_regs_or_place_dupls_walker, NULL, chordal_env);
}
void be_ssa_destruction(be_chordal_env_t *chordal_env) {
pmap *perm_map = pmap_create();
- ir_graph *irg = chordal_env->session_env->irg;
+ ir_graph *irg = chordal_env->session_env->irg;
dbg = firm_dbg_register("ir.be.ssadestr");
firm_dbg_set_mask(dbg, DEBUG_LVL);
/* create a map for fast lookup of perms: block --> perm */
chordal_env->data = perm_map;
- build_phi_rings(chordal_env);
+ build_phi_rings(chordal_env);
insert_all_perms(chordal_env);
dump_ir_block_graph(irg, "-ssa_destr_perms_placed");
static void ssa_destruction_check_walker(ir_node *bl, void *data)
{
- be_chordal_env_t *chordal_env = data;
- ir_node *phi;
+ be_chordal_env_t *chordal_env = data;
+ ir_node *phi;
int i, max;
- for(phi = get_irn_link(bl); phi; phi = get_irn_link(phi)) {
- const arch_register_t *phi_reg, *arg_reg;
-
- phi_reg = get_reg(phi);
- /* iterate over all args of phi */
- for(i=0, max=get_irn_arity(phi); i<max; ++i) {
- ir_node *arg = get_irn_n(phi, i);
- arg_reg = get_reg(arg);
- if(phi_reg != arg_reg) {
- ir_printf("Registers of %+F and %+F differ: %s %s\n",
- phi, arg, phi_reg->name, arg_reg->name);
- assert(0 && "Registers of phi and arg differ\n");
- }
- if(!is_pinned(arg))
- ir_printf("Warning: Arg %+F not pinned\n", arg);
- }
- }
+ for(phi = get_irn_link(bl); phi; phi = get_irn_link(phi)) {
+ const arch_register_t *phi_reg, *arg_reg;
+
+ phi_reg = get_reg(phi);
+ /* iterate over all args of phi */
+ for(i=0, max=get_irn_arity(phi); i<max; ++i) {
+ ir_node *arg = get_irn_n(phi, i);
+ arg_reg = get_reg(arg);
+ if(phi_reg != arg_reg) {
+ DBG((dbg, 0, "Error: Registers of %+F and %+F differ: %s %s\n", phi, arg, phi_reg->name, arg_reg->name));
+ assert(0);
+ }
+ if(!is_pinned(arg)) {
+ DBG((dbg, 0, "Warning: Phi argument %+F is not pinned.\n", arg));
+ assert(0);
+ }
+ }
+ }
}
void be_ssa_destruction_check(be_chordal_env_t *chordal_env) {
- irg_block_walk_graph(chordal_env->session_env->irg,
- ssa_destruction_check_walker, NULL, chordal_env);
+ irg_block_walk_graph(chordal_env->session_env->irg, ssa_destruction_check_walker, NULL, chordal_env);
}
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