Implement binary emitter for Cmp8Bit.
[libfirm] / ir / be / belower.c
index 9a83855..241607d 100644 (file)
 #include "irgwalk.h"
 #include "array_t.h"
 
-#include "bearch_t.h"
+#include "bearch.h"
 #include "belower.h"
-#include "benode_t.h"
-#include "besched_t.h"
+#include "benode.h"
+#include "besched.h"
 #include "bestat.h"
 #include "bessaconstr.h"
 #include "beintlive_t.h"
@@ -288,10 +288,9 @@ static void get_perm_cycle(perm_cycle_t *const cycle,
 static void lower_perm_node(ir_node *irn, lower_env_t *env)
 {
        const arch_register_class_t *const reg_class   = arch_get_irn_register(get_irn_n(irn, 0))->reg_class;
-       ir_graph                    *const irg         = get_irn_irg(irn);
        ir_node                     *const block       = get_nodes_block(irn);
        int                          const arity       = get_irn_arity(irn);
-       reg_pair_t                  *const pairs       = alloca(arity * sizeof(pairs[0]));
+       reg_pair_t                  *const pairs       = ALLOCAN(reg_pair_t, arity);
        int                                keep_perm   = 0;
        int                                do_copy     = env->do_copy;
        /* Get the schedule predecessor node to the perm.
@@ -327,9 +326,9 @@ static void lower_perm_node(ir_node *irn, lower_env_t *env)
 
                pair           = &pairs[n++];
                pair->in_node  = in;
-               pair->in_reg   = arch_get_irn_register(in);
+               pair->in_reg   = in_reg;
                pair->out_node = out;
-               pair->out_reg  = arch_get_irn_register(out);
+               pair->out_reg  = out_reg;
                pair->checked  = 0;
        }
 
@@ -418,14 +417,14 @@ static void lower_perm_node(ir_node *irn, lower_env_t *env)
                                        DBG((dbg, LEVEL_1, "%+F                        (%+F, %s) and (%+F, %s)\n",
                                                                irn, res1, cycle.elems[i]->name, res2, cycle.elems[i + 1]->name));
 
-                                       cpyxchg = be_new_Perm(reg_class, irg, block, 2, in);
+                                       cpyxchg = be_new_Perm(reg_class, block, 2, in);
 
                                        if (i > 0) {
                                                /* cycle is not done yet */
                                                int pidx = get_pairidx_for_in_regidx(pairs, n, cycle.elems[i]->index);
 
                                                /* create intermediate proj */
-                                               res1 = new_r_Proj(irg, block, cpyxchg, get_irn_mode(res1), 0);
+                                               res1 = new_r_Proj(block, cpyxchg, get_irn_mode(res1), 0);
 
                                                /* set as in for next Perm */
                                                pairs[pidx].in_node = res1;
@@ -440,26 +439,26 @@ static void lower_perm_node(ir_node *irn, lower_env_t *env)
                                        arch_set_irn_register(res1, cycle.elems[i]);
 
                                        /* insert the copy/exchange node in schedule after the magic schedule node (see above) */
-                                       sched_add_after(sched_point, cpyxchg);
+                                       sched_add_after(skip_Proj(sched_point), cpyxchg);
 
-                                       DBG((dbg, LEVEL_1, "replacing %+F with %+F, placed new node after %+F\n", irn, cpyxchg, sched_point));
+                                       DB((dbg, LEVEL_1, "replacing %+F with %+F, placed new node after %+F\n", irn, cpyxchg, sched_point));
 
                                        /* set the new scheduling point */
                                        sched_point = res1;
                                } else {
                                        ir_node *cpyxchg;
 
-                                       DBG((dbg, LEVEL_1, "%+F creating copy node (%+F, %s) -> (%+F, %s)\n",
+                                       DB((dbg, LEVEL_1, "%+F creating copy node (%+F, %s) -> (%+F, %s)\n",
                                                                irn, arg1, cycle.elems[i]->name, res2, cycle.elems[i + 1]->name));
 
-                                       cpyxchg = be_new_Copy(reg_class, irg, block, arg1);
+                                       cpyxchg = be_new_Copy(reg_class, block, arg1);
                                        arch_set_irn_register(cpyxchg, cycle.elems[i + 1]);
 
                                        /* exchange copy node and proj */
                                        exchange(res2, cpyxchg);
 
                                        /* insert the copy/exchange node in schedule after the magic schedule node (see above) */
-                                       sched_add_after(sched_point, cpyxchg);
+                                       sched_add_after(skip_Proj(sched_point), cpyxchg);
 
                                        /* set the new scheduling point */
                                        sched_point = cpyxchg;
@@ -504,16 +503,16 @@ static void gen_assure_different_pattern(ir_node *irn, ir_node *other_different,
        ir_node                     *keep, *cpy;
        op_copy_assoc_t             *entry;
 
-       if (arch_irn_is(other_different, ignore) ||
+       if (arch_irn_is_ignore(other_different) ||
                        !mode_is_datab(get_irn_mode(other_different))) {
-               DBG((dbg_constr, LEVEL_1, "ignore constraint for %+F because other_irn is ignore or not a datab node\n", irn));
+               DB((dbg_constr, LEVEL_1, "ignore constraint for %+F because other_irn is ignore or not a datab node\n", irn));
                return;
        }
 
        irg    = be_get_birg_irg(env->birg);
        op_set = &env->op_set;
        block  = get_nodes_block(irn);
-       cls    = arch_get_irn_reg_class(other_different, -1);
+       cls    = arch_get_irn_reg_class_out(other_different);
 
        /* Make a not spillable copy of the different node   */
        /* this is needed because the different irn could be */
@@ -523,38 +522,38 @@ static void gen_assure_different_pattern(ir_node *irn, ir_node *other_different,
        /* check if already exists such a copy in the schedule immediately before */
        cpy = find_copy(skip_Proj(irn), other_different);
        if (! cpy) {
-               cpy = be_new_Copy(cls, irg, block, other_different);
-               be_node_set_flags(cpy, BE_OUT_POS(0), arch_irn_flags_dont_spill);
-               DBG((dbg_constr, LEVEL_1, "created non-spillable %+F for value %+F\n", cpy, other_different));
+               cpy = be_new_Copy(cls, block, other_different);
+               arch_irn_set_flags(cpy, arch_irn_flags_dont_spill);
+               DB((dbg_constr, LEVEL_1, "created non-spillable %+F for value %+F\n", cpy, other_different));
        } else {
-               DBG((dbg_constr, LEVEL_1, "using already existing %+F for value %+F\n", cpy, other_different));
+               DB((dbg_constr, LEVEL_1, "using already existing %+F for value %+F\n", cpy, other_different));
        }
 
        /* Add the Keep resp. CopyKeep and reroute the users */
        /* of the other_different irn in case of CopyKeep.   */
        if (has_irn_users(other_different)) {
-               keep = be_new_CopyKeep_single(cls, irg, block, cpy, irn, get_irn_mode(other_different));
-               be_node_set_reg_class(keep, 1, cls);
+               keep = be_new_CopyKeep_single(cls, block, cpy, irn, get_irn_mode(other_different));
+               be_node_set_reg_class_in(keep, 1, cls);
        } else {
                ir_node *in[2];
 
                in[0] = irn;
                in[1] = cpy;
-               keep = be_new_Keep(cls, irg, block, 2, in);
+               keep = be_new_Keep(block, 2, in);
        }
 
-       DBG((dbg_constr, LEVEL_1, "created %+F(%+F, %+F)\n\n", keep, irn, cpy));
+       DB((dbg_constr, LEVEL_1, "created %+F(%+F, %+F)\n\n", keep, irn, cpy));
 
        /* insert copy and keep into schedule */
        assert(sched_is_scheduled(irn) && "need schedule to assure constraints");
        if (! sched_is_scheduled(cpy))
                sched_add_before(skip_Proj(irn), cpy);
-       sched_add_after(irn, keep);
+       sched_add_after(skip_Proj(irn), keep);
 
        /* insert the other different and it's copies into the map */
        entry = ir_nodemap_get(op_set, other_different);
        if (! entry) {
-               entry      = obstack_alloc(&env->obst, sizeof(*entry));
+               entry      = OALLOC(&env->obst, op_copy_assoc_t);
                entry->cls = cls;
                ir_nodeset_init(&entry->copies);
 
@@ -642,8 +641,6 @@ static void assure_constraints_walker(ir_node *block, void *walk_env) {
  * (or Projs of the same node), copying the same operand.
  */
 static void melt_copykeeps(constraint_env_t *cenv) {
-       be_irg_t *birg = cenv->birg;
-       ir_graph *irg  = be_get_birg_irg(birg);
        ir_nodemap_iterator_t map_iter;
        ir_nodemap_entry_t    map_entry;
 
@@ -689,7 +686,7 @@ static void melt_copykeeps(constraint_env_t *cenv) {
                                ref_mode_T = skip_Proj(get_irn_n(ref, 1));
                                obstack_grow(&obst, &ref, sizeof(ref));
 
-                               DBG((dbg_constr, LEVEL_1, "Trying to melt %+F:\n", ref));
+                               DB((dbg_constr, LEVEL_1, "Trying to melt %+F:\n", ref));
 
                                /* check for copykeeps pointing to the same mode_T node as the reference copykeep */
                                for (j = 0; j < num_ck; ++j) {
@@ -698,7 +695,7 @@ static void melt_copykeeps(constraint_env_t *cenv) {
                                        if (j != idx && cur_ck && skip_Proj(get_irn_n(cur_ck, 1)) == ref_mode_T) {
                                                obstack_grow(&obst, &cur_ck, sizeof(cur_ck));
                                                ir_nodeset_remove(&entry->copies, cur_ck);
-                                               DBG((dbg_constr, LEVEL_1, "\t%+F\n", cur_ck));
+                                               DB((dbg_constr, LEVEL_1, "\t%+F\n", cur_ck));
                                                ck_arr[j] = NULL;
                                                ++n_melt;
                                                sched_remove(cur_ck);
@@ -708,7 +705,7 @@ static void melt_copykeeps(constraint_env_t *cenv) {
 
                                /* check, if we found some candidates for melting */
                                if (n_melt == 1) {
-                                       DBG((dbg_constr, LEVEL_1, "\tno candidate found\n"));
+                                       DB((dbg_constr, LEVEL_1, "\tno candidate found\n"));
                                        continue;
                                }
 
@@ -728,15 +725,15 @@ static void melt_copykeeps(constraint_env_t *cenv) {
                                }
 
 #ifdef KEEP_ALIVE_COPYKEEP_HACK
-                               new_ck = be_new_CopyKeep(entry->cls, irg, get_nodes_block(ref), be_get_CopyKeep_op(ref), n_melt, new_ck_in, mode_ANY);
+                               new_ck = be_new_CopyKeep(entry->cls, get_nodes_block(ref), be_get_CopyKeep_op(ref), n_melt, new_ck_in, mode_ANY);
                                keep_alive(new_ck);
 #else
-                               new_ck = be_new_CopyKeep(entry->cls, irg, get_nodes_block(ref), be_get_CopyKeep_op(ref), n_melt, new_ck_in, get_irn_mode(ref));
+                               new_ck = be_new_CopyKeep(entry->cls, get_nodes_block(ref), be_get_CopyKeep_op(ref), n_melt, new_ck_in, get_irn_mode(ref));
 #endif /* KEEP_ALIVE_COPYKEEP_HACK */
 
                                /* set register class for all kept inputs */
                                for (j = 1; j <= n_melt; ++j)
-                                       be_node_set_reg_class(new_ck, j, entry->cls);
+                                       be_node_set_reg_class_in(new_ck, j, entry->cls);
 
                                ir_nodeset_insert(&entry->copies, new_ck);
 
@@ -748,7 +745,7 @@ static void melt_copykeeps(constraint_env_t *cenv) {
                                } while (be_is_Keep(sched_pt) || be_is_CopyKeep(sched_pt));
 
                                sched_add_before(sched_pt, new_ck);
-                               DBG((dbg_constr, LEVEL_1, "created %+F, scheduled before %+F\n", new_ck, sched_pt));
+                               DB((dbg_constr, LEVEL_1, "created %+F, scheduled before %+F\n", new_ck, sched_pt));
 
                                /* finally: kill the reference copykeep */
                                kill_node(ref);
@@ -767,7 +764,6 @@ static void melt_copykeeps(constraint_env_t *cenv) {
 void assure_constraints(be_irg_t *birg) {
        ir_graph              *irg = be_get_birg_irg(birg);
        constraint_env_t      cenv;
-       ir_node               **nodes;
        ir_nodemap_iterator_t map_iter;
        ir_nodemap_entry_t    map_entry;
 
@@ -786,15 +782,13 @@ void assure_constraints(be_irg_t *birg) {
 
        /* for all */
        foreach_ir_nodemap(&cenv.op_set, map_entry, map_iter) {
-               op_copy_assoc_t *entry = map_entry.data;
-               int     n;
-               ir_node *cp;
-               ir_nodeset_iterator_t iter;
+               op_copy_assoc_t          *entry = map_entry.data;
+               int                       n     = ir_nodeset_size(&entry->copies);
+               ir_node                 **nodes = ALLOCAN(ir_node*, n);
+               ir_node                  *cp;
+               ir_nodeset_iterator_t     iter;
                be_ssa_construction_env_t senv;
 
-               n     = ir_nodeset_size(&entry->copies);
-               nodes = alloca(n * sizeof(nodes[0]));
-
                /* put the node in an array */
                DBG((dbg_constr, LEVEL_1, "introduce copies for %+F ", map_entry.node));
 
@@ -818,11 +812,10 @@ void assure_constraints(be_irg_t *birg) {
                /* so we transform unnecessary ones into Keeps.       */
                foreach_ir_nodeset(&entry->copies, cp, iter) {
                        if (be_is_CopyKeep(cp) && get_irn_n_edges(cp) < 1) {
+                               int      n   = get_irn_arity(cp);
                                ir_node *keep;
-                               int     n = get_irn_arity(cp);
 
-                               keep = be_new_Keep(arch_get_irn_reg_class(cp, -1),
-                                       irg, get_nodes_block(cp), n, get_irn_in(cp) + 1);
+                               keep = be_new_Keep(get_nodes_block(cp), n, get_irn_in(cp) + 1);
                                sched_add_before(cp, keep);
 
                                /* Set all ins (including the block) of the CopyKeep BAD to keep the verifier happy. */
@@ -865,19 +858,16 @@ static int push_through_perm(ir_node *perm, lower_env_t *env)
        int n_moved;
        int new_size;
        ir_node *frontier = bl;
-
+       ir_node *irn;
        int i, n;
-       const ir_edge_t *edge;
-       ir_node *one_proj = NULL, *irn;
-       const arch_register_class_t *cls = NULL;
-
-       DBG((dbg_permmove, LEVEL_1, "perm move %+F irg %+F\n", perm, irg));
 
        /* get some Proj and find out the register class of that Proj. */
-       edge     = get_irn_out_edge_first_kind(perm, EDGE_KIND_NORMAL);
-       one_proj = get_edge_src_irn(edge);
+       const ir_edge_t             *edge     = get_irn_out_edge_first_kind(perm, EDGE_KIND_NORMAL);
+       ir_node                     *one_proj = get_edge_src_irn(edge);
+       const arch_register_class_t *cls      = arch_get_irn_reg_class_out(one_proj);
        assert(is_Proj(one_proj));
-       cls      = arch_get_irn_reg_class(one_proj, -1);
+
+       DB((dbg_permmove, LEVEL_1, "perm move %+F irg %+F\n", perm, irg));
 
        /* Find the point in the schedule after which the
         * potentially movable nodes must be defined.
@@ -891,7 +881,7 @@ static int push_through_perm(ir_node *perm, lower_env_t *env)
                for (i = get_irn_arity(irn) - 1; i >= 0; --i) {
                        ir_node *op = get_irn_n(irn, i);
                        if (arch_irn_consider_in_reg_alloc(cls, op) &&
-                           !values_interfere(env->birg, op, one_proj)) {
+                           !be_values_interfere(env->birg->lv, op, one_proj)) {
                                frontier = irn;
                                goto found_front;
                        }
@@ -899,7 +889,7 @@ static int push_through_perm(ir_node *perm, lower_env_t *env)
        }
 found_front:
 
-       DBG((dbg_permmove, LEVEL_2, "\tfrontier: %+F\n", frontier));
+       DB((dbg_permmove, LEVEL_2, "\tfrontier: %+F\n", frontier));
 
        node = sched_prev(perm);
        n_moved = 0;
@@ -966,11 +956,13 @@ found_front:
 
        new_size = arity - n_moved;
        if(new_size == 0) {
+               sched_remove(perm);
+               kill_node(perm);
                return 0;
        }
 
-       map      = alloca(new_size * sizeof(map[0]));
-       proj_map = alloca(arity * sizeof(proj_map[0]));
+       map      = ALLOCAN(int, new_size);
+       proj_map = ALLOCAN(int, arity);
        memset(proj_map, -1, sizeof(proj_map[0]));
        n   = 0;
        for (i = 0; i < arity; ++i) {