/*
- * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved.
+ * Copyright (C) 1995-2010 University of Karlsruhe. All right reserved.
*
* This file is part of libFirm.
*
* @brief Various verify routines that check a scheduled graph for correctness.
* @author Matthias Braun
* @date 05.05.2006
- * @version $Id$
*/
-#ifdef HAVE_CONFIG_H
#include "config.h"
-#endif
#include <limits.h>
+#include <stdbool.h>
#include "bitset.h"
#include "set.h"
#include "beverify.h"
#include "belive.h"
-#include "besched_t.h"
-#include "benode_t.h"
-#include "beirg_t.h"
+#include "besched.h"
+#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);
+static bool my_values_interfere(const ir_node *a, const ir_node *b);
typedef struct be_verify_register_pressure_env_t_ {
ir_graph *irg; /**< the irg to verify */
- be_lv_t *lv; /**< Liveness information. */
- const arch_env_t *arch_env; /**< an architecture environment */
+ be_lv_t *lv; /**< Liveness information. */
const arch_register_class_t *cls; /**< the register class to check for */
- int registers_available; /**< number of available registers */
- int problem_found; /**< flag indicating if a problem was found */
+ unsigned registers_available; /**< number of available registers */
+ bool problem_found; /**< flag indicating if a problem was found */
} be_verify_register_pressure_env_t;
/**
* Print all nodes of a pset into a file.
*/
-static void print_living_values(FILE *F, const ir_nodeset_t *live_nodes) {
- ir_nodeset_iterator_t iter;
- ir_node *node;
-
+static void print_living_values(FILE *F, const ir_nodeset_t *live_nodes)
+{
ir_fprintf(F, "\t");
foreach_ir_nodeset(live_nodes, node, iter) {
ir_fprintf(F, "%+F ", node);
ir_fprintf(F, "\n");
}
+static const char *get_irg_name(ir_graph *irg)
+{
+ ir_entity *entity = get_irg_entity(irg);
+ return get_entity_ld_name(entity);
+}
+
/**
* Check if number of live nodes never exceeds the number of available registers.
*/
-static void verify_liveness_walker(ir_node *block, void *data) {
+static void verify_liveness_walker(ir_node *block, void *data)
+{
be_verify_register_pressure_env_t *env = (be_verify_register_pressure_env_t *)data;
ir_nodeset_t live_nodes;
- ir_node *irn;
- int pressure;
/* collect register pressure info, start with end of a block */
- // ir_fprintf(stderr, "liveness check %+F\n", block);
ir_nodeset_init(&live_nodes);
- be_liveness_end_of_block(env->lv, env->arch_env, env->cls, block,
+ be_liveness_end_of_block(env->lv, env->cls, block,
&live_nodes);
- // print_living_values(stderr, &live_nodes);
- pressure = ir_nodeset_size(&live_nodes);
- if(pressure > env->registers_available) {
+ unsigned pressure = ir_nodeset_size(&live_nodes);
+ if (pressure > env->registers_available) {
ir_fprintf(stderr, "Verify Warning: Register pressure too high at end of block %+F(%s) (%d/%d):\n",
- block, get_irg_dump_name(env->irg), pressure, env->registers_available);
+ block, get_irg_name(env->irg), pressure, env->registers_available);
print_living_values(stderr, &live_nodes);
- env->problem_found = 1;
+ env->problem_found = true;
}
sched_foreach_reverse(block, irn) {
break;
// print_living_values(stderr, &live_nodes);
- be_liveness_transfer(env->arch_env, env->cls, irn, &live_nodes);
+ be_liveness_transfer(env->cls, irn, &live_nodes);
pressure = ir_nodeset_size(&live_nodes);
- if(pressure > env->registers_available) {
+ if (pressure > env->registers_available) {
ir_fprintf(stderr, "Verify Warning: Register pressure too high before node %+F in %+F(%s) (%d/%d):\n",
- irn, block, get_irg_dump_name(env->irg), pressure, env->registers_available);
+ irn, block, get_irg_name(env->irg), pressure, env->registers_available);
print_living_values(stderr, &live_nodes);
- env->problem_found = 1;
+ env->problem_found = true;
assert(0);
}
}
ir_nodeset_destroy(&live_nodes);
}
-/**
- * Start a walk over the irg and check the register pressure.
- */
-int be_verify_register_pressure(const be_irg_t *birg,
- const arch_register_class_t *cls,
- ir_graph *irg) {
+bool be_verify_register_pressure(ir_graph *irg, const arch_register_class_t *cls)
+{
be_verify_register_pressure_env_t env;
- env.lv = be_liveness(birg);
+ env.lv = be_liveness_new(irg);
env.irg = irg;
- env.arch_env = birg->main_env->arch_env;
env.cls = cls;
- env.registers_available = env.cls->n_regs - be_put_ignore_regs(birg, env.cls, NULL);
- env.problem_found = 0;
+ env.registers_available = be_get_n_allocatable_regs(irg, cls);
+ env.problem_found = false;
- be_liveness_assure_sets(env.lv);
+ be_liveness_compute_sets(env.lv);
irg_block_walk_graph(irg, verify_liveness_walker, NULL, &env);
be_liveness_free(env.lv);
return ! env.problem_found;
}
-
-
/*--------------------------------------------------------------------------- */
-
-
typedef struct be_verify_schedule_env_t_ {
- int problem_found; /**< flags indicating if there was a problem */
- bitset_t *scheduled; /**< bitset of scheduled nodes */
- ir_graph *irg; /**< the irg to check */
- const arch_env_t *arch_env; /**< the arch_env */
+ bool problem_found; /**< flags indicating a problem */
+ bitset_t *scheduled; /**< bitset of scheduled nodes */
+ ir_graph *irg; /**< the irg to check */
} be_verify_schedule_env_t;
-/**
- * Simple schedule checker.
- */
-static void verify_schedule_walker(ir_node *block, void *data) {
+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 */
- if(bitset_is_set(env->scheduled, get_irn_idx(node))) {
+ if (bitset_is_set(env->scheduled, get_irn_idx(node))) {
ir_fprintf(stderr, "Verify warning: %+F appears to be schedule twice\n");
- env->problem_found = 1;
+ env->problem_found = true;
}
bitset_set(env->scheduled, get_irn_idx(node));
/* Check that scheduled nodes are in the correct block */
- if(get_nodes_block(node) != block) {
+ if (get_nodes_block(node) != block) {
ir_fprintf(stderr, "Verify warning: %+F is in block %+F but scheduled in %+F\n", node, get_nodes_block(node), block);
- env->problem_found = 1;
+ env->problem_found = true;
}
/* Check that timesteps are increasing */
- timestep = sched_get_time_step(node);
- if(timestep <= last_timestep) {
+ int timestep = sched_get_time_step(node);
+ if (timestep <= last_timestep) {
ir_fprintf(stderr, "Verify warning: Schedule timestep did not increase at node %+F\n",
node);
- env->problem_found = 1;
+ env->problem_found = true;
}
last_timestep = timestep;
if (is_Phi(node)) {
if (non_phi_found != NULL) {
ir_fprintf(stderr, "Verify Warning: Phi node %+F scheduled after non-Phi nodes (for example %+F) in block %+F (%s)\n",
- node, non_phi_found, block, get_irg_dump_name(env->irg));
- env->problem_found = 1;
+ node, non_phi_found, block, get_irg_name(env->irg));
+ env->problem_found = true;
}
} else {
non_phi_found = node;
}
/* 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));
- env->problem_found = 1;
+ 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_name(env->irg));
+ env->problem_found = true;
+ } 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--;
- }
+ if (!is_Proj(node) && !be_is_Keep(node)) {
+ ir_fprintf(stderr, "Verify Warning: Node %+F scheduled after control flow changing node in block %+F (%s)\n",
+ node, block, get_irg_name(env->irg));
+ env->problem_found = true;
}
}
/* Check that all uses come before their definitions */
- if(!is_Phi(node)) {
- int nodetime = sched_get_time_step(node);
- for(i = 0, arity = get_irn_arity(node); i < arity; ++i) {
+ if (!is_Phi(node)) {
+ sched_timestep_t nodetime = sched_get_time_step(node);
+ int arity = get_irn_arity(node);
+ for (int i = 0; i < arity; ++i) {
ir_node *arg = get_irn_n(node, i);
- if(get_nodes_block(arg) != block
- || !sched_is_scheduled(arg))
+ if (get_nodes_block(arg) != block || !sched_is_scheduled(arg))
continue;
- if(sched_get_time_step(arg) >= nodetime) {
+ if (sched_get_time_step(arg) >= nodetime) {
ir_fprintf(stderr, "Verify Warning: Value %+F used by %+F before it was defined in block %+F (%s)\n",
- arg, node, block, get_irg_dump_name(env->irg));
- env->problem_found = 1;
+ arg, node, block, get_irg_name(env->irg));
+ env->problem_found = true;
}
}
}
/* Check that no dead nodes are scheduled */
- if(get_irn_n_edges(node) == 0) {
+ if (get_irn_n_edges(node) == 0) {
ir_fprintf(stderr, "Verify warning: Node %+F is dead but scheduled in block %+F (%s)\n",
- node, block, get_irg_dump_name(env->irg));
- env->problem_found = 1;
+ node, block, get_irg_name(env->irg));
+ env->problem_found = true;
}
- if(be_is_Keep(node)) {
- /* at least 1 of the keep arguments has to be it schedule
+ if (be_is_Keep(node) || be_is_CopyKeep(node)) {
+ /* at least 1 of the keep arguments has to be its schedule
* predecessor */
- int arity = get_irn_arity(node);
- int problem = 1;
ir_node *prev = sched_prev(node);
- while(be_is_Keep(prev))
+ 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;
+ int arity = get_irn_arity(node);
+ bool found = false;
+ while (true) {
+ for (int 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;
+ node, block, get_irg_name(env->irg));
+ env->problem_found = true;
}
}
}
-
- /* 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 int should_be_scheduled(be_verify_schedule_env_t *env, ir_node *node) {
- if(is_Block(node))
- return -1;
-
- if(is_Proj(node))
- return 0;
-
- if(get_irn_mode(node) == mode_M) {
- if(is_Phi(node) || is_Sync(node) || is_Pin(node))
- return 0;
- }
- if(be_is_Keep(node) && get_irn_opcode(get_nodes_block(node)) == iro_Bad)
- return 0;
-
- switch(get_irn_opcode(node)) {
- case iro_End:
- case iro_NoMem:
- case iro_Bad:
- case iro_Unknown:
- return 0;
- default:
- break;
- }
-
- if(arch_irn_get_flags(env->arch_env, node) & arch_irn_flags_ignore)
- return -1;
-
- return 1;
-}
-
-static void check_schedule(ir_node *node, void *data) {
- be_verify_schedule_env_t *env = data;
- int should_be;
- int scheduled;
-
- should_be = should_be_scheduled(env, node);
- if(should_be == -1)
- return;
+static void check_schedule(ir_node *node, void *data)
+{
+ 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));
- scheduled = bitset_is_set(env->scheduled, get_irn_idx(node)) ? 1 : 0;
- should_be = should_be ? 1 : 0;
- if(should_be != scheduled) {
+ if (should_be != scheduled) {
ir_fprintf(stderr, "Verify warning: Node %+F in block %+F(%s) should%s be scheduled\n",
- node, get_nodes_block(node), get_irg_dump_name(env->irg), should_be ? "" : " not");
- env->problem_found = 1;
+ node, get_nodes_block(node), get_irg_name(env->irg), should_be ? "" : " not");
+ env->problem_found = true;
}
}
-/**
- * Start a walk over the irg and check schedule.
- */
-int be_verify_schedule(const be_irg_t *birg)
+bool be_verify_schedule(ir_graph *irg)
{
be_verify_schedule_env_t env;
- env.problem_found = 0;
- env.irg = be_get_birg_irg(birg);
+ env.problem_found = false;
+ env.irg = irg;
env.scheduled = bitset_alloca(get_irg_last_idx(env.irg));
- env.arch_env = birg->main_env->arch_env;
- irg_block_walk_graph(env.irg, verify_schedule_walker, NULL, &env);
+ irg_block_walk_graph(irg, verify_schedule_walker, NULL, &env);
/* check if all nodes are scheduled */
- irg_walk_graph(env.irg, check_schedule, NULL, &env);
+ irg_walk_graph(irg, check_schedule, NULL, &env);
return ! env.problem_found;
}
-
-
/*--------------------------------------------------------------------------- */
-
-
-typedef struct _spill_t {
+typedef struct spill_t {
ir_node *spill;
ir_entity *ent;
} spill_t;
typedef struct {
- const arch_env_t *arch_env;
- ir_graph *irg;
- set *spills;
- ir_node **reloads;
- int problem_found;
+ ir_graph *irg;
+ set *spills;
+ ir_node **reloads;
+ bool problem_found;
} be_verify_spillslots_env_t;
-static int cmp_spill(const void* d1, const void* d2, size_t size) {
- const spill_t* s1 = d1;
- const spill_t* s2 = d2;
+static int cmp_spill(const void* d1, const void* d2, size_t size)
+{
(void) size;
-
+ const spill_t* s1 = (const spill_t*)d1;
+ const spill_t* s2 = (const spill_t*)d2;
return s1->spill != s2->spill;
}
-static spill_t *find_spill(be_verify_spillslots_env_t *env, ir_node *node) {
+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 set_find(spill_t, 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) {
- spill_t spill, *res;
- int hash = HASH_PTR(node);
-
+static spill_t *get_spill(be_verify_spillslots_env_t *env, ir_node *node, ir_entity *ent)
+{
+ int hash = hash_ptr(node);
+ spill_t spill;
spill.spill = node;
- res = set_find(env->spills, &spill, sizeof(spill), hash);
+ spill_t *res = set_find(spill_t, env->spills, &spill, sizeof(spill), hash);
- if(res == NULL) {
+ if (res == NULL) {
spill.ent = ent;
- res = set_insert(env->spills, &spill, sizeof(spill), hash);
+ res = set_insert(spill_t, env->spills, &spill, sizeof(spill), hash);
}
return res;
}
-static ir_node *get_memory_edge(const ir_node *node) {
- int i, arity;
+static ir_node *get_memory_edge(const ir_node *node)
+{
ir_node *result = NULL;
-
- arity = get_irn_arity(node);
- for(i = arity - 1; i >= 0; --i) {
+ int arity = get_irn_arity(node);
+ for (int i = arity - 1; i >= 0; --i) {
ir_node *arg = get_irn_n(node, i);
- if(get_irn_mode(arg) == mode_M) {
+ if (get_irn_mode(arg) == mode_M) {
assert(result == NULL);
result = arg;
}
return result;
}
-static
-void collect(be_verify_spillslots_env_t *env, ir_node *node, ir_node *reload, ir_entity* ent);
+static void collect(be_verify_spillslots_env_t *env, ir_node *node, ir_node *reload, ir_entity* ent);
-static
-void be_check_entity(be_verify_spillslots_env_t *env, ir_node *node, ir_entity *ent) {
- if(ent == NULL) {
+static void be_check_entity(be_verify_spillslots_env_t *env, ir_node *node, ir_entity *ent)
+{
+ if (ent == NULL) {
ir_fprintf(stderr, "Verify warning: Node %+F in block %+F(%s) should have an entity assigned\n",
- node, get_nodes_block(node), get_irg_dump_name(env->irg));
+ node, get_nodes_block(node), get_irg_name(env->irg));
}
}
-static
-void collect_spill(be_verify_spillslots_env_t *env, ir_node *node, ir_node *reload, ir_entity* ent) {
- ir_entity *spillent = arch_get_frame_entity(env->arch_env, node);
+static void collect_spill(be_verify_spillslots_env_t *env, ir_node *node, ir_node *reload, ir_entity* ent)
+{
+ ir_entity *spillent = arch_get_frame_entity(node);
be_check_entity(env, node, spillent);
get_spill(env, node, ent);
- if(spillent != ent) {
+ if (spillent != ent) {
ir_fprintf(stderr, "Verify warning: Spill %+F has different entity than reload %+F in block %+F(%s)\n",
- node, reload, get_nodes_block(node), get_irg_dump_name(env->irg));
- env->problem_found = 1;
+ node, reload, get_nodes_block(node), get_irg_name(env->irg));
+ env->problem_found = true;
}
}
-static void collect_memperm(be_verify_spillslots_env_t *env, ir_node *node, ir_node *reload, ir_entity* ent) {
- int i, arity;
- spill_t spill, *res;
- int hash = HASH_PTR(node);
- int out;
- ir_node* memperm;
- ir_entity *spillent;
-
+static void collect_memperm(be_verify_spillslots_env_t *env, ir_node *node, ir_node *reload, ir_entity* ent)
+{
assert(is_Proj(node));
- memperm = get_Proj_pred(node);
- out = get_Proj_proj(node);
+ ir_node *memperm = get_Proj_pred(node);
+ int out = get_Proj_proj(node);
- spillent = be_get_MemPerm_out_entity(memperm, out);
+ ir_entity *spillent = be_get_MemPerm_out_entity(memperm, out);
be_check_entity(env, memperm, spillent);
- if(spillent != ent) {
+ if (spillent != ent) {
ir_fprintf(stderr, "Verify warning: MemPerm %+F has different entity than reload %+F in block %+F(%s)\n",
- node, reload, get_nodes_block(node), get_irg_dump_name(env->irg));
- env->problem_found = 1;
+ node, reload, get_nodes_block(node), get_irg_name(env->irg));
+ env->problem_found = true;
}
+ int hash = hash_ptr(node);
+ spill_t spill;
spill.spill = node;
- res = set_find(env->spills, &spill, sizeof(spill), hash);
- if(res != NULL) {
+ spill_t *res = set_find(spill_t, env->spills, &spill, sizeof(spill), hash);
+ if (res != NULL) {
return;
}
spill.ent = spillent;
- res = set_insert(env->spills, &spill, sizeof(spill), hash);
+ (void)set_insert(spill_t, env->spills, &spill, sizeof(spill), hash);
- for(i = 0, arity = be_get_MemPerm_entity_arity(memperm); i < arity; ++i) {
+ int arity = be_get_MemPerm_entity_arity(memperm);
+ for (int i = 0; i < arity; ++i) {
ir_node* arg = get_irn_n(memperm, i + 1);
ir_entity* argent = be_get_MemPerm_in_entity(memperm, i);
}
}
-static void collect_memphi(be_verify_spillslots_env_t *env, ir_node *node, ir_node *reload, ir_entity *ent) {
- int i, arity;
- spill_t spill, *res;
- int hash = HASH_PTR(node);
-
+static void collect_memphi(be_verify_spillslots_env_t *env, ir_node *node, ir_node *reload, ir_entity *ent)
+{
assert(is_Phi(node));
+ int hash = hash_ptr(node);
+ spill_t spill;
spill.spill = node;
- res = set_find(env->spills, &spill, sizeof(spill), hash);
- if(res != NULL) {
+ spill_t *res = set_find(spill_t, env->spills, &spill, sizeof(spill), hash);
+ if (res != NULL) {
return;
}
spill.ent = ent;
- res = set_insert(env->spills, &spill, sizeof(spill), hash);
+ (void)set_insert(spill_t, env->spills, &spill, sizeof(spill), hash);
/* is 1 of the arguments a spill? */
- for(i = 0, arity = get_irn_arity(node); i < arity; ++i) {
+ int arity = get_irn_arity(node);
+ for (int i = 0; i < arity; ++i) {
ir_node* arg = get_irn_n(node, i);
collect(env, arg, reload, ent);
}
}
-static void collect(be_verify_spillslots_env_t *env, ir_node *node, ir_node *reload, ir_entity* ent) {
- if(be_is_Spill(node)) {
+static void collect(be_verify_spillslots_env_t *env, ir_node *node, ir_node *reload, ir_entity* ent)
+{
+ if (be_is_Spill(node)) {
collect_spill(env, node, reload, ent);
- } else if(is_Proj(node)) {
+ } else if (is_Proj(node)) {
collect_memperm(env, node, reload, ent);
- } else if(is_Phi(node) && get_irn_mode(node) == mode_M) {
+ } else if (is_Phi(node) && get_irn_mode(node) == mode_M) {
collect_memphi(env, node, reload, ent);
} else {
/* Disabled for now, spills might get transformed by the backend */
#if 0
ir_fprintf(stderr, "Verify warning: No spill, memperm or memphi attached to node %+F found from node %+F in block %+F(%s)\n",
- node, reload, get_nodes_block(node), get_irg_dump_name(env->irg));
- env->problem_found = 1;
+ node, reload, get_nodes_block(node), get_irg_name(env->irg));
+ env->problem_found = true;
#endif
}
}
* This walker function searches for reloads and collects all the spills
* and memphis attached to them.
*/
-static void collect_spills_walker(ir_node *node, void *data) {
- be_verify_spillslots_env_t *env = data;
- const arch_env_t *arch_env = env->arch_env;
-
- /* @@@ ia32_classify returns classification of Proj_pred :-/ */
- if(is_Proj(node))
- return;
+static void collect_spills_walker(ir_node *node, void *data)
+{
+ be_verify_spillslots_env_t *env = (be_verify_spillslots_env_t*)data;
- if(arch_irn_class_is(arch_env, node, reload)) {
+ if (be_is_Reload(node)) {
ir_node *spill = get_memory_edge(node);
- ir_entity *ent;
-
- if(spill == NULL) {
+ if (spill == NULL) {
ir_fprintf(stderr, "Verify warning: No spill attached to reload %+F in block %+F(%s)\n",
- node, get_nodes_block(node), get_irg_dump_name(env->irg));
- env->problem_found = 1;
+ node, get_nodes_block(node), get_irg_name(env->irg));
+ env->problem_found = true;
return;
}
- ent = arch_get_frame_entity(env->arch_env, node);
+ ir_entity *ent = arch_get_frame_entity(node);
be_check_entity(env, node, ent);
collect(env, spill, node, ent);
}
}
-static void check_spillslot_interference(be_verify_spillslots_env_t *env) {
- int spillcount = set_count(env->spills);
- spill_t **spills = alloca(spillcount * sizeof(spills[0]));
- spill_t *spill;
- int i;
+static void check_spillslot_interference(be_verify_spillslots_env_t *env)
+{
+ int spillcount = set_count(env->spills);
+ spill_t **spills = ALLOCAN(spill_t*, spillcount);
- for(spill = set_first(env->spills), i = 0; spill != NULL; spill = set_next(env->spills), ++i) {
- spills[i] = spill;
+ int s = 0;
+ foreach_set(env->spills, spill_t, spill) {
+ spills[s++] = spill;
}
+ assert(s == spillcount);
- for(i = 0; i < spillcount; ++i) {
+ for (int i = 0; i < spillcount; ++i) {
spill_t *sp1 = spills[i];
- int i2;
- for(i2 = i+1; i2 < spillcount; ++i2) {
+ for (int i2 = i+1; i2 < spillcount; ++i2) {
spill_t *sp2 = spills[i2];
- if(sp1->ent != sp2->ent)
+ if (sp1->ent != sp2->ent)
continue;
- if(my_values_interfere(sp1->spill, sp2->spill)) {
+ if (my_values_interfere(sp1->spill, sp2->spill)) {
ir_fprintf(stderr, "Verify warning: Spillslots for %+F in block %+F(%s) and %+F in block %+F(%s) interfere\n",
- sp1->spill, get_nodes_block(sp1->spill), get_irg_dump_name(env->irg),
- sp2->spill, get_nodes_block(sp2->spill), get_irg_dump_name(env->irg));
- env->problem_found = 1;
+ sp1->spill, get_nodes_block(sp1->spill), get_irg_name(env->irg),
+ sp2->spill, get_nodes_block(sp2->spill), get_irg_name(env->irg));
+ env->problem_found = true;
my_values_interfere(sp1->spill, sp2->spill);
}
}
}
}
-static void check_lonely_spills(ir_node *node, void *data) {
- be_verify_spillslots_env_t *env = data;
+static void check_lonely_spills(ir_node *node, void *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)))) {
+ if (be_is_Spill(node) || (is_Proj(node) && be_is_MemPerm(get_Proj_pred(node)))) {
spill_t *spill = find_spill(env, node);
- if(be_is_Spill(node)) {
- ir_entity *ent = arch_get_frame_entity(env->arch_env, node);
+ if (be_is_Spill(node)) {
+ ir_entity *ent = arch_get_frame_entity(node);
be_check_entity(env, node, ent);
}
- if(spill == NULL) {
- ir_fprintf(stderr, "Verify warning: Node %+F in block %+F(%s) not connected to a reaload\n",
- node, get_nodes_block(node), get_irg_dump_name(env->irg));
+ if (spill == NULL) {
+ ir_fprintf(stderr, "Verify warning: Node %+F in block %+F(%s) not connected to a reload\n",
+ node, get_nodes_block(node), get_irg_name(env->irg));
}
}
}
-int be_verify_spillslots(const arch_env_t *arch_env, ir_graph *irg)
+bool be_verify_spillslots(ir_graph *irg)
{
be_verify_spillslots_env_t env;
- env.arch_env = arch_env;
- env.irg = irg;
- env.spills = new_set(cmp_spill, 10);
- env.reloads = NEW_ARR_F(ir_node*, 0);
- env.problem_found = 0;
+ env.irg = irg;
+ env.spills = new_set(cmp_spill, 10);
+ env.reloads = NEW_ARR_F(ir_node*, 0);
+ env.problem_found = false;
irg_walk_graph(irg, collect_spills_walker, NULL, &env);
irg_walk_graph(irg, check_lonely_spills, NULL, &env);
return ! env.problem_found;
}
-
-
/*--------------------------------------------------------------------------- */
-
-
/**
* Check, if two values interfere.
* @param a The first value.
* @param b The second value.
* @return 1, if a and b interfere, 0 if not.
*/
-static int my_values_interfere(const ir_node *a, const ir_node *b) {
- const ir_edge_t *edge;
- ir_node *bb;
+static bool my_values_interfere(const ir_node *a, const ir_node *b)
+{
int a2b = value_dominates(a, b);
int b2a = value_dominates(b, a);
/* If there is no dominance relation, they do not interfere. */
- if(!a2b && !b2a)
- return 0;
+ if (!a2b && !b2a)
+ return false;
/*
* Adjust a and b so, that a dominates b if
* a dominates b or vice versa.
*/
- if(b2a) {
+ if (b2a) {
const ir_node *t = a;
a = b;
b = t;
}
- bb = get_nodes_block(b);
+ ir_node *bb = get_nodes_block(b);
/*
* Look at all usages of a.
*/
foreach_out_edge(a, edge) {
const ir_node *user = get_edge_src_irn(edge);
- if(b == user)
+ if (b == user)
continue;
- if(get_irn_opcode(user) == iro_End)
+ if (get_irn_opcode(user) == iro_End)
continue;
/* in case of phi arguments we compare with the block the value comes from */
- if(is_Phi(user)) {
+ if (is_Phi(user)) {
ir_node *phiblock = get_nodes_block(user);
- if(phiblock == bb)
+ if (phiblock == bb)
continue;
user = get_irn_n(phiblock, get_edge_src_pos(edge));
}
- if(value_dominates(b, user))
- return 1;
+ if (value_dominates(b, user))
+ return true;
}
- return 0;
+ return false;
}
-
-
/*--------------------------------------------------------------------------- */
-static const arch_env_t *arch_env;
-static ir_graph *irg;
-static be_lv_t *lv;
-static int problem_found;
-static const arch_register_class_t *regclass;
-static ir_node **registers;
+static const arch_env_t *arch_env;
+static ir_graph *irg;
+static be_lv_t *lv;
+static bool problem_found;
+static const ir_node **registers;
-static void check_register_constraints(ir_node *node)
+static void check_output_constraints(const ir_node *node)
{
- const arch_register_t *reg;
- int i, arity;
+ if (arch_get_irn_reg_class(node) == NULL)
+ return;
/* verify output register */
- if (arch_get_irn_reg_class(arch_env, node, -1) != NULL) {
- reg = arch_get_irn_register(arch_env, 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_is_allocatable(arch_env, node, -1, 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;
- }
+ 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_name(irg));
+ problem_found = true;
+ } 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_name(irg));
+ problem_found = true;
}
+}
+static void check_input_constraints(ir_node *node)
+{
/* verify input register */
- arity = get_irn_arity(node);
- for (i = 0; i < arity; ++i) {
+ int arity = get_irn_arity(node);
+ for (int i = 0; i < arity; ++i) {
ir_node *pred = get_irn_n(node, i);
-
- if (is_Unknown(pred))
- continue;
-
if (is_Bad(pred)) {
ir_fprintf(stderr, "Verify warning: %+F in block %+F(%s) has Bad as input %d\n",
- node, get_nodes_block(node), get_irg_dump_name(irg), i);
+ node, get_nodes_block(node), get_irg_name(irg), i);
problem_found = 1;
continue;
}
- if (arch_get_irn_reg_class(arch_env, node, i) == NULL)
+ const arch_register_req_t *req = arch_get_irn_register_req_in(node, i);
+ if (req->cls == NULL)
continue;
- reg = arch_get_irn_register(arch_env, pred);
+ const arch_register_req_t *pred_req = arch_get_irn_register_req(pred);
+ if (req->width > pred_req->width) {
+ ir_fprintf(stderr, "Verify warning: %+F in block %+F(%s) register width of value at input %d too small\n",
+ node, get_nodes_block(node), get_irg_name(irg), i);
+ problem_found = 1;
+ }
+
+ const arch_register_t *reg = arch_get_irn_register(pred);
if (reg == NULL) {
ir_fprintf(stderr, "Verify warning: Node %+F in block %+F(%s) should have a register assigned (%+F input constraint)\n",
- pred, get_nodes_block(pred), get_irg_dump_name(irg), node);
+ pred, get_nodes_block(pred), get_irg_name(irg), node);
problem_found = 1;
continue;
- }
- else if (! arch_register_type_is(reg, joker) && ! arch_reg_is_allocatable(arch_env, 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));
+ reg->name, i, node, get_nodes_block(node), get_irg_name(irg));
problem_found = 1;
}
}
/* 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(arch_env, node);
+ const arch_register_t *reg = arch_get_irn_register(node);
- arity = get_irn_arity(node);
- for (i = 0; i < arity; ++i) {
+ int arity = get_irn_arity(node);
+ for (int i = 0; i < arity; ++i) {
ir_node *pred = get_Phi_pred(node, i);
- const arch_register_t *pred_reg = arch_get_irn_register(arch_env, pred);
+ 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",
- i, node, get_nodes_block(node), get_irg_dump_name(irg), pred_reg->name, reg->name);
- problem_found = 1;
+ i, node, get_nodes_block(node),
+ get_irg_name(irg), pred_name, reg_name);
+ problem_found = true;
}
}
}
}
-static void value_used(ir_node *node) {
- const arch_register_t *reg;
- ir_node *reg_node;
-
- if (arch_get_irn_reg_class(arch_env, node, -1) != regclass)
- return;
-
- reg = arch_get_irn_register(arch_env, node);
- if (reg->type & arch_register_type_virtual)
+static void value_used(const ir_node *block, const ir_node *node)
+{
+ const arch_register_t *reg = arch_get_irn_register(node);
+ if (reg == NULL || reg->type & arch_register_type_virtual)
return;
- reg_node = registers[reg->index];
- if (reg_node != NULL && reg_node != node) {
- ir_fprintf(stderr, "Verify warning: Register %s assigned more than once in block %+F(%s) (nodes %+F %+F)\n",
- reg->name, get_nodes_block(node), get_irg_dump_name(irg),
- node, reg_node);
- problem_found = 1;
+ const arch_register_req_t *req = arch_get_irn_register_req(node);
+ assert(req->width > 0);
+ unsigned idx = reg->global_index;
+ for (unsigned i = 0; i < req->width; ++i) {
+ const ir_node *reg_node = registers[idx+i];
+ if (reg_node != NULL && reg_node != node) {
+ const arch_register_t *realreg = &arch_env->registers[idx+i];
+ ir_fprintf(stderr, "Verify warning: Register %s assigned more than once in block %+F(%s) (nodes %+F %+F)\n",
+ realreg->name, block, get_irg_name(irg),
+ node, reg_node);
+ problem_found = true;
+ }
+ registers[idx+i] = node;
}
-
- registers[reg->index] = node;
}
-static void value_def(ir_node *node)
+static void value_def(const ir_node *node)
{
- const arch_register_t *reg;
- ir_node *reg_node;
+ const arch_register_t *reg = arch_get_irn_register(node);
- if (arch_get_irn_reg_class(arch_env, node, -1) != regclass)
+ if (reg == NULL || reg->type & arch_register_type_virtual)
return;
- reg = arch_get_irn_register(arch_env, node);
- if (reg->type & arch_register_type_virtual)
- return;
+ const arch_register_req_t *req = arch_get_irn_register_req(node);
+ assert(req->width > 0);
+ unsigned idx = reg->global_index;
+ for (unsigned i = 0; i < req->width; ++i) {
+ const ir_node *reg_node = registers[idx+i];
- 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));
- problem_found = 1;
+ if (reg_node != node) {
+ const arch_register_t *realreg = &arch_env->registers[idx+i];
+ ir_fprintf(stderr, "Verify warning: Node %+F not registered as value for Register %s (but %+F) in block %+F(%s)\n",
+ node, realreg->name, reg_node, get_nodes_block(node),
+ get_irg_name(irg));
+ problem_found = true;
+ }
+ registers[idx+i] = NULL;
}
- registers[reg->index] = NULL;
}
-static void verify_block_register_allocation(ir_node *block, void *data) {
- int i, nregclasses;
+static void verify_block_register_allocation(ir_node *block, void *data)
+{
(void) data;
- nregclasses = arch_env_get_n_reg_class(arch_env);
- for (i = 0; i < nregclasses; ++i) {
- ir_node *node;
- int i2;
-
- regclass = arch_env_get_reg_class(arch_env, i);
+ assert(lv->sets_valid && "live sets must be computed");
- int i;
+ unsigned n_regs = arch_env->n_registers;
+ registers = ALLOCANZ(const ir_node*, n_regs);
- assert(lv->nodes && "live sets must be computed");
-
- int n_regs = arch_register_class_n_regs(regclass);
- registers = alloca(n_regs * sizeof(registers[0]));
- memset(registers, 0, n_regs * sizeof(registers[0]));
-
- be_lv_foreach(lv, block, be_lv_state_end, i) {
- ir_node *node = be_lv_get_irn(lv, block, i);
- value_used(node);
- }
+ be_lv_foreach(lv, block, be_lv_state_end, lv_node) {
+ value_used(block, lv_node);
+ }
- sched_foreach_reverse(block, node) {
- int arity;
+ sched_foreach_reverse(block, node) {
- if (get_irn_mode(node) == mode_T) {
- const ir_edge_t *edge;
- foreach_out_edge(node, edge) {
- ir_node *def = get_edge_src_irn(edge);
- value_def(def);
- }
- } else {
- value_def(node);
+ if (get_irn_mode(node) == mode_T) {
+ foreach_out_edge(node, edge) {
+ ir_node *def = get_edge_src_irn(edge);
+ value_def(def);
+ check_output_constraints(def);
}
+ } else {
+ value_def(node);
+ check_output_constraints(node);
+ }
- check_register_constraints(node);
- if (is_Phi(node))
- continue;
+ check_input_constraints(node);
- arity = get_irn_arity(node);
- for (i2 = 0; i2 < arity; ++i2) {
- ir_node *use = get_irn_n(node, i2);
- value_used(use);
+ /* process uses. (Phi inputs are no real uses) */
+ if (!is_Phi(node)) {
+ int arity = get_irn_arity(node);
+ for (int in = 0; in < arity; ++in) {
+ ir_node *use = get_irn_n(node, in);
+ value_used(block, use);
}
}
+ }
- be_lv_foreach(lv, block, be_lv_state_in, i) {
- ir_node *node = be_lv_get_irn(lv, block, i);
- value_def(node);
- }
+ be_lv_foreach(lv, block, be_lv_state_in, lv_node) {
+ value_def(lv_node);
+ }
- /* set must be empty now */
- for (i2 = 0; i2 < n_regs; ++i2) {
- if (registers[i2] == NULL)
- continue;
+ /* set must be empty now */
+ for (unsigned i = 0; i < n_regs; ++i) {
+ if (registers[i] == NULL)
+ continue;
- ir_fprintf(stderr, "Verify warning: Node %+F not live-in and no def found in block %+F(%s)\n",
- registers[i2], block, get_irg_dump_name(irg));
- problem_found = 1;
- }
+ ir_fprintf(stderr, "Verify warning: Node %+F not live-in and no def found in block %+F(%s)\n",
+ registers[i], block, get_irg_name(irg));
+ problem_found = true;
}
}
-int be_verify_register_allocation(const be_irg_t *birg) {
- arch_env = be_get_birg_arch_env(birg);
- irg = be_get_birg_irg(birg);
- lv = be_liveness(birg);
- problem_found = 0;
+bool be_verify_register_allocation(ir_graph *new_irg)
+{
+ irg = new_irg;
+ arch_env = be_get_irg_arch_env(irg);
+ lv = be_liveness_new(irg);
+ problem_found = false;
- be_liveness_assure_sets(lv);
+ be_liveness_compute_sets(lv);
irg_block_walk_graph(irg, verify_block_register_allocation, NULL, NULL);
-
be_liveness_free(lv);
return !problem_found;
}
-
-
/*--------------------------------------------------------------------------- */
+typedef struct lv_walker_t {
+ be_lv_t *lv;
+ void *data;
+} lv_walker_t;
+static const char *lv_flags_to_str(unsigned flags)
+{
+ static const char *states[] = {
+ "---",
+ "i--",
+ "-e-",
+ "ie-",
+ "--o",
+ "i-o",
+ "-eo",
+ "ieo"
+ };
+
+ return states[flags & 7];
+}
-typedef struct _verify_out_dead_nodes_env {
- ir_graph *irg;
- bitset_t *reachable;
- int problem_found;
-} verify_out_dead_nodes_env;
+static void lv_check_walker(ir_node *bl, void *data)
+{
+ lv_walker_t *w = (lv_walker_t*)data;
+ be_lv_t *lv = w->lv;
+ be_lv_t *fresh = (be_lv_t*)w->data;
-static void check_out_edges(ir_node *node, verify_out_dead_nodes_env *env) {
- ir_graph *irg = env->irg;
- const ir_edge_t* edge;
+ be_lv_info_t *curr = ir_nodehashmap_get(be_lv_info_t, &fresh->map, bl);
+ be_lv_info_t *fr = ir_nodehashmap_get(be_lv_info_t, &fresh->map, bl);
- if(irn_visited(node))
- return;
- mark_irn_visited(node);
+ if (!fr && curr && curr[0].head.n_members > 0) {
+ ir_fprintf(stderr, "%+F liveness should be empty but current liveness contains:\n", bl);
+ for (unsigned i = 0; i < curr[0].head.n_members; ++i) {
+ ir_fprintf(stderr, "\t%+F\n", get_idx_irn(lv->irg, curr[1 + i].node.idx));
+ }
+ } else if (curr) {
+ unsigned n_curr = curr[0].head.n_members;
+ unsigned n_fresh = fr[0].head.n_members;
- /* we find too many (uncritical) dead nodes in block out edges */
- if(is_Block(node))
- return;
+ if (n_curr != n_fresh) {
+ ir_fprintf(stderr, "%+F: liveness set sizes differ. curr %d, correct %d\n", bl, n_curr, n_fresh);
- foreach_out_edge(node, edge) {
- ir_node* src = get_edge_src_irn(edge);
+ ir_fprintf(stderr, "current:\n");
+ for (unsigned i = 0; i < n_curr; ++i) {
+ be_lv_info_node_t *n = &curr[1 + i].node;
+ ir_fprintf(stderr, "%+F %u %+F %s\n", bl, i, get_idx_irn(lv->irg, n->idx), lv_flags_to_str(n->flags));
+ }
- if(!bitset_is_set(env->reachable, get_irn_idx(src)) && !is_Block(src)) {
- ir_fprintf(stderr, "Verify warning: Node %+F in block %+F(%s) only reachable through out edges from %+F\n",
- src, get_nodes_block(src), get_irg_dump_name(irg), node);
- env->problem_found = 1;
- continue;
+ ir_fprintf(stderr, "correct:\n");
+ for (unsigned i = 0; i < n_fresh; ++i) {
+ be_lv_info_node_t *n = &fr[1 + i].node;
+ ir_fprintf(stderr, "%+F %u %+F %s\n", bl, i, get_idx_irn(lv->irg, n->idx), lv_flags_to_str(n->flags));
+ }
}
-
- check_out_edges(src, env);
}
}
-static void set_reachable(ir_node *node, void* data)
+void be_liveness_check(be_lv_t *lv)
{
- bitset_t* reachable = data;
- bitset_set(reachable, get_irn_idx(node));
-}
-
-int be_verify_out_edges(ir_graph *irg) {
- verify_out_dead_nodes_env env;
+ lv_walker_t w;
+ be_lv_t *fresh = be_liveness_new(lv->irg);
- env.irg = irg;
- env.reachable = bitset_alloca(get_irg_last_idx(irg));
- env.problem_found = edges_verify(irg);
-
- irg_walk_in_or_dep_graph(irg, set_reachable, NULL, env.reachable);
- irg_walk_anchors(irg, set_reachable, NULL, env.reachable);
- inc_irg_visited(irg);
- check_out_edges(get_irg_start(irg), &env);
-
- return ! env.problem_found;
+ w.lv = lv;
+ w.data = fresh;
+ irg_block_walk_graph(lv->irg, lv_check_walker, NULL, &w);
+ be_liveness_free(fresh);
}
projects / libfirm / blobdiff