big refactoring of arch_XXX functions
[libfirm] / ir / be / beverify.c
index 059b39e..47c1219 100644 (file)
@@ -45,6 +45,7 @@
 #include "benode.h"
 #include "beirg.h"
 #include "beintlive_t.h"
+#include "belistsched.h"
 
 static int my_values_interfere(const ir_node *a, const ir_node *b);
 
@@ -126,8 +127,7 @@ int be_verify_register_pressure(ir_graph *irg, const arch_register_class_t *cls)
        env.lv                  = be_liveness(irg);
        env.irg                 = irg;
        env.cls                 = cls;
-       env.registers_available
-               = env.cls->n_regs - be_put_ignore_regs(irg, env.cls, NULL);
+       env.registers_available = be_get_n_allocatable_regs(irg, cls);
        env.problem_found       = 0;
 
        be_liveness_assure_sets(env.lv);
@@ -156,22 +156,19 @@ static void verify_schedule_walker(ir_node *block, void *data)
 {
        be_verify_schedule_env_t *env = (be_verify_schedule_env_t*) data;
        ir_node *node;
-       ir_node *non_phi_found = NULL;
-       int cfchange_found = 0;
-       /* TODO ask arch about delay branches */
-       int delay_branches = 0;
+       ir_node *non_phi_found  = NULL;
+       ir_node *cfchange_found = NULL;
        int last_timestep = INT_MIN;
 
        /*
         * Tests for the following things:
-        *   1. Make sure that all phi nodes are scheduled at the beginning of the block
-        *   2. There is 1 or no control flow changing node scheduled and exactly delay_branches operations after it.
-        *   3. No value is defined after it has been used
-        *   4. mode_T nodes have all projs scheduled behind them followed by Keeps
+        *   1. Make sure that all phi nodes are scheduled at the beginning of the
+        *      block
+        *   2. No value is defined after it has been used
+        *   3. mode_T nodes have all projs scheduled behind them followed by Keeps
         *       (except mode_X projs)
         */
        sched_foreach(block, node) {
-               int i, arity;
                int timestep;
 
                /* this node is scheduled */
@@ -208,31 +205,29 @@ static void verify_schedule_walker(ir_node *block, void *data)
                }
 
                /* Check for control flow changing nodes */
-               if (is_cfop(node) && get_irn_opcode(node) != iro_Start) {
+               if (is_cfop(node)) {
                        /* check, that only one CF operation is scheduled */
-                       if (cfchange_found == 1) {
-                               ir_fprintf(stderr, "Verify Warning: More than 1 control flow changing node (%+F) scheduled in block %+F (%s)\n",
-                                       node, block, get_irg_dump_name(env->irg));
+                       if (cfchange_found != NULL) {
+                               ir_fprintf(stderr, "Verify Warning: Additional control flow changing node %+F scheduled after %+F in block %+F (%s)\n",
+                                       node, block, cfchange_found, get_irg_dump_name(env->irg));
                                env->problem_found = 1;
+                       } else {
+                               cfchange_found = node;
                        }
-                       cfchange_found = 1;
-               } else if (cfchange_found) {
+               } else if (cfchange_found != NULL) {
                        /* proj and keepany aren't real instructions... */
                        if (!is_Proj(node) && !be_is_Keep(node)) {
-                               /* check for delay branches */
-                               if (delay_branches == 0) {
-                                       ir_fprintf(stderr, "Verify Warning: Node %+F scheduled after control flow changing node (+delay branches) in block %+F (%s)\n",
-                                               node, block, get_irg_dump_name(env->irg));
-                                       env->problem_found = 1;
-                               } else {
-                                       delay_branches--;
-                               }
+                               ir_fprintf(stderr, "Verify Warning: Node %+F scheduled after control flow changing node in block %+F (%s)\n",
+                                          node, block, get_irg_dump_name(env->irg));
+                               env->problem_found = 1;
                        }
                }
 
                /* Check that all uses come before their definitions */
                if (!is_Phi(node)) {
-                       int nodetime = sched_get_time_step(node);
+                       int i;
+                       int arity;
+                       sched_timestep_t nodetime = sched_get_time_step(node);
                        for (i = 0, arity = get_irn_arity(node); i < arity; ++i) {
                                ir_node *arg = get_irn_n(node, i);
                                if (get_nodes_block(arg) != block
@@ -255,40 +250,41 @@ static void verify_schedule_walker(ir_node *block, void *data)
                }
 
                if (be_is_Keep(node) || be_is_CopyKeep(node)) {
-                       /* at least 1 of the keep arguments has to be it schedule
+                       /* at least 1 of the keep arguments has to be its schedule
                         * predecessor */
                        int      arity   = get_irn_arity(node);
-                       int      problem = 1;
+                       bool     found   = false;
                        ir_node *prev    = sched_prev(node);
                        while (be_is_Keep(prev) || be_is_CopyKeep(prev))
                                prev = sched_prev(prev);
 
-                       for (i = 0; i < arity; ++i) {
-                               ir_node *in = get_irn_n(node, i);
-                               in = skip_Proj(in);
-                               if (in == prev)
-                                       problem = 0;
+                       while (true) {
+                               int i;
+                               for (i = 0; i < arity; ++i) {
+                                       ir_node *in = get_irn_n(node, i);
+                                       in = skip_Proj(in);
+                                       if (in == prev)
+                                               found = true;
+                               }
+                               if (found)
+                                       break;
+                               prev = sched_prev(prev);
+                               if (!is_Phi(prev))
+                                       break;
                        }
-                       if (problem) {
+                       if (!found) {
                                ir_fprintf(stderr, "%+F not scheduled after its pred node in block %+F (%s)\n",
                                           node, block, get_irg_dump_name(env->irg));
                                env->problem_found = 1;
                        }
                }
        }
-
-       /* check that all delay branches are filled (at least with NOPs) */
-       if (cfchange_found && delay_branches != 0) {
-               ir_fprintf(stderr, "Verify warning: Not all delay slots filled after jump (%d/%d) in block %+F (%s)\n",
-                       block, get_irg_dump_name(env->irg));
-               env->problem_found = 1;
-       }
 }
 
 static void check_schedule(ir_node *node, void *data)
 {
-       be_verify_schedule_env_t *env = data;
-       bool should_be = to_appear_in_schedule(node);
+       be_verify_schedule_env_t *env = (be_verify_schedule_env_t*)data;
+       bool should_be = !is_Proj(node) && !(arch_get_irn_flags(node) & arch_irn_flags_not_scheduled);
        bool scheduled = bitset_is_set(env->scheduled, get_irn_idx(node));
 
        if (should_be != scheduled) {
@@ -336,8 +332,8 @@ typedef struct {
 
 static int cmp_spill(const void* d1, const void* d2, size_t size)
 {
-       const spill_t* s1 = d1;
-       const spill_t* s2 = d2;
+       const spill_t* s1 = (const spill_t*)d1;
+       const spill_t* s2 = (const spill_t*)d2;
        (void) size;
 
        return s1->spill != s2->spill;
@@ -348,7 +344,7 @@ static spill_t *find_spill(be_verify_spillslots_env_t *env, ir_node *node)
        spill_t spill;
 
        spill.spill = node;
-       return set_find(env->spills, &spill, sizeof(spill), HASH_PTR(node));
+       return (spill_t*)set_find(env->spills, &spill, sizeof(spill), HASH_PTR(node));
 }
 
 static spill_t *get_spill(be_verify_spillslots_env_t *env, ir_node *node, ir_entity *ent)
@@ -357,11 +353,11 @@ static spill_t *get_spill(be_verify_spillslots_env_t *env, ir_node *node, ir_ent
        int hash = HASH_PTR(node);
 
        spill.spill = node;
-       res = set_find(env->spills, &spill, sizeof(spill), hash);
+       res = (spill_t*)set_find(env->spills, &spill, sizeof(spill), hash);
 
        if (res == NULL) {
                spill.ent = ent;
-               res = set_insert(env->spills, &spill, sizeof(spill), hash);
+               res = (spill_t*)set_insert(env->spills, &spill, sizeof(spill), hash);
        }
 
        return res;
@@ -430,13 +426,13 @@ static void collect_memperm(be_verify_spillslots_env_t *env, ir_node *node, ir_n
        }
 
        spill.spill = node;
-       res = set_find(env->spills, &spill, sizeof(spill), hash);
+       res = (spill_t*)set_find(env->spills, &spill, sizeof(spill), hash);
        if (res != NULL) {
                return;
        }
 
        spill.ent = spillent;
-       res = set_insert(env->spills, &spill, sizeof(spill), hash);
+       res = (spill_t*)set_insert(env->spills, &spill, sizeof(spill), hash);
 
        for (i = 0, arity = be_get_MemPerm_entity_arity(memperm); i < arity; ++i) {
                ir_node* arg = get_irn_n(memperm, i + 1);
@@ -455,13 +451,13 @@ static void collect_memphi(be_verify_spillslots_env_t *env, ir_node *node, ir_no
        assert(is_Phi(node));
 
        spill.spill = node;
-       res = set_find(env->spills, &spill, sizeof(spill), hash);
+       res = (spill_t*)set_find(env->spills, &spill, sizeof(spill), hash);
        if (res != NULL) {
                return;
        }
 
        spill.ent = ent;
-       res = set_insert(env->spills, &spill, sizeof(spill), hash);
+       res = (spill_t*)set_insert(env->spills, &spill, sizeof(spill), hash);
 
        /* is 1 of the arguments a spill? */
        for (i = 0, arity = get_irn_arity(node); i < arity; ++i) {
@@ -494,7 +490,7 @@ static void collect(be_verify_spillslots_env_t *env, ir_node *node, ir_node *rel
  */
 static void collect_spills_walker(ir_node *node, void *data)
 {
-       be_verify_spillslots_env_t *env = data;
+       be_verify_spillslots_env_t *env = (be_verify_spillslots_env_t*)data;
 
        if (arch_irn_classify(node) & arch_irn_class_reload) {
                ir_node *spill = get_memory_edge(node);
@@ -521,8 +517,9 @@ static void check_spillslot_interference(be_verify_spillslots_env_t *env)
        spill_t  *spill;
        int       i;
 
-       for (spill = set_first(env->spills), i = 0; spill != NULL; spill = set_next(env->spills), ++i) {
-               spills[i] = spill;
+       i = 0;
+       foreach_set(env->spills, spill_t*, spill) {
+               spills[i++] = spill;
        }
 
        for (i = 0; i < spillcount; ++i) {
@@ -548,7 +545,7 @@ static void check_spillslot_interference(be_verify_spillslots_env_t *env)
 
 static void check_lonely_spills(ir_node *node, void *data)
 {
-       be_verify_spillslots_env_t *env = data;
+       be_verify_spillslots_env_t *env = (be_verify_spillslots_env_t*)data;
 
        if (be_is_Spill(node) || (is_Proj(node) && be_is_MemPerm(get_Proj_pred(node)))) {
                spill_t *spill = find_spill(env, node);
@@ -667,13 +664,14 @@ static ir_node                    **registers;
 static void check_output_constraints(ir_node *node)
 {
        /* verify output register */
-       if (arch_get_irn_reg_class_out(node) == regclass) {
+       if (arch_get_irn_reg_class(node) == regclass) {
+               const arch_register_req_t *req = arch_get_irn_register_req(node);
                const arch_register_t *reg = arch_get_irn_register(node);
                if (reg == NULL) {
                        ir_fprintf(stderr, "Verify warning: Node %+F in block %+F(%s) should have a register assigned\n",
                                        node, get_nodes_block(node), get_irg_dump_name(irg));
                        problem_found = 1;
-               } else if (!arch_register_type_is(reg, joker) && !arch_reg_out_is_allocatable(node, reg)) {
+               } else if (!arch_reg_is_allocatable(req, reg)) {
                        ir_fprintf(stderr, "Verify warning: Register %s assigned as output of %+F not allowed (register constraint) in block %+F(%s)\n",
                                        reg->name, node, get_nodes_block(node), get_irg_dump_name(irg));
                        problem_found = 1;
@@ -689,9 +687,9 @@ static void check_input_constraints(ir_node *node)
        /* verify input register */
        arity = get_irn_arity(node);
        for (i = 0; i < arity; ++i) {
-               const arch_register_req_t *req      = arch_get_in_register_req(node, i);
+               const arch_register_req_t *req      = arch_get_irn_register_req_in(node, i);
                ir_node                   *pred     = get_irn_n(node, i);
-               const arch_register_req_t *pred_req = arch_get_register_req_out(pred);
+               const arch_register_req_t *pred_req = arch_get_irn_register_req(pred);
 
                if (is_Bad(pred)) {
                        ir_fprintf(stderr, "Verify warning: %+F in block %+F(%s) has Bad as input %d\n",
@@ -722,7 +720,7 @@ static void check_input_constraints(ir_node *node)
                                   pred, get_nodes_block(pred), get_irg_dump_name(irg), node);
                        problem_found = 1;
                        continue;
-               } else if (!arch_register_type_is(reg, joker) && ! arch_reg_is_allocatable(node, i, reg)) {
+               } else if (!arch_reg_is_allocatable(req, reg)) {
                        ir_fprintf(stderr, "Verify warning: Register %s as input %d of %+F not allowed (register constraint) in block %+F(%s)\n",
                                   reg->name, i, node, get_nodes_block(node), get_irg_dump_name(irg));
                        problem_found = 1;
@@ -732,8 +730,6 @@ static void check_input_constraints(ir_node *node)
        /* phis should be NOPs at this point, which means all input regs
         * must be the same as the output reg */
        if (is_Phi(node)) {
-               int i, arity;
-
                reg = arch_get_irn_register(node);
 
                arity = get_irn_arity(node);
@@ -741,7 +737,7 @@ static void check_input_constraints(ir_node *node)
                        ir_node               *pred     = get_Phi_pred(node, i);
                        const arch_register_t *pred_reg = arch_get_irn_register(pred);
 
-                       if (reg != pred_reg && !arch_register_type_is(pred_reg, joker)) {
+                       if (reg != pred_reg && !(pred_reg->type & arch_register_type_joker)) {
                                const char *pred_name = pred_reg != NULL ? pred_reg->name : "(null)";
                                const char *reg_name  = reg != NULL ? reg->name : "(null)";
                                ir_fprintf(stderr, "Verify warning: Input %d of %+F in block %+F(%s) uses register %s instead of %s\n",
@@ -758,7 +754,7 @@ static void value_used(ir_node *block, ir_node *node)
        const arch_register_t *reg;
        ir_node               *reg_node;
 
-       if (arch_get_irn_reg_class_out(node) != regclass)
+       if (arch_get_irn_reg_class(node) != regclass)
                return;
 
        reg = arch_get_irn_register(node);
@@ -781,7 +777,7 @@ static void value_def(ir_node *node)
        const arch_register_t *reg;
        ir_node               *reg_node;
 
-       if (arch_get_irn_reg_class_out(node) != regclass)
+       if (arch_get_irn_reg_class(node) != regclass)
                return;
 
        reg = arch_get_irn_register(node);
@@ -790,6 +786,11 @@ static void value_def(ir_node *node)
 
        reg_node = registers[reg->index];
 
+       /* a little cheat, since its so hard to remove all outedges to dead code
+        * in the backend. This particular case should never be a problem. */
+       if (reg_node == NULL && get_irn_n_edges(node) == 0)
+               return;
+
        if (reg_node != node) {
                ir_fprintf(stderr, "Verify warning: Node %+F not registered as value for Register %s (but %+F) in block %+F(%s)\n",
                               node, reg->name, reg_node, get_nodes_block(node), get_irg_dump_name(irg));
@@ -803,12 +804,12 @@ static void verify_block_register_allocation(ir_node *block, void *data)
        int i, nregclasses;
        (void) data;
 
-       nregclasses = arch_env_get_n_reg_class(arch_env);
+       nregclasses = arch_env->n_register_classes;
        for (i = 0; i < nregclasses; ++i) {
                ir_node *node;
                int      idx, i2, n_regs;
 
-               regclass = arch_env_get_reg_class(arch_env, i);
+               regclass = &arch_env->register_classes[i];
 
                assert(lv->nodes && "live sets must be computed");
 
@@ -816,8 +817,8 @@ static void verify_block_register_allocation(ir_node *block, void *data)
                registers = ALLOCANZ(ir_node*, n_regs);
 
                be_lv_foreach(lv, block, be_lv_state_end, idx) {
-                       ir_node *node = be_lv_get_irn(lv, block, idx);
-                       value_used(block, node);
+                       ir_node *lv_node = be_lv_get_irn(lv, block, idx);
+                       value_used(block, lv_node);
                }
 
                sched_foreach_reverse(block, node) {
@@ -848,8 +849,8 @@ static void verify_block_register_allocation(ir_node *block, void *data)
                }
 
                be_lv_foreach(lv, block, be_lv_state_in, idx) {
-                       ir_node *node = be_lv_get_irn(lv, block, idx);
-                       value_def(node);
+                       ir_node *lv_node = be_lv_get_irn(lv, block, idx);
+                       value_def(lv_node);
                }
 
                /* set must be empty now */