#include "belive_t.h"
#include "beinsn_t.h"
-#define DBG_LEVEL 2
+#include "bessadestrsimple.h"
-typedef struct _var_info_t var_info_t;
+#define DBG_LEVEL 2
/**
* Environment with all the needed stuff
dom_front_info_t *dom_info;
FILE *f; /**< file handle used for out- and input file */
- set *vars; /**< contains all var_info_t */
+ set *vars; /**< contains all be_var_info_t */
int n_cls_vars; /**< length of the array cls_vars */
- var_info_t **cls_vars; /**< only the var_infos for current cls. needed for double iterating */
+ be_var_info_t **cls_vars; /**< only the var_infos for current cls. needed for double iterating */
DEBUG_ONLY(firm_dbg_module_t *dbg;)
} be_raext_env_t;
}
-/******************************************************************************
- _____ _____ _____ _
- / ____/ ____| /\ | __ \ | |
- | (___| (___ / \ ______| | | | ___ ___| |_ _ __
- \___ \\___ \ / /\ \______| | | |/ _ \/ __| __| '__|
- ____) |___) / ____ \ | |__| | __/\__ \ |_| |
- |_____/_____/_/ \_\ |_____/ \___||___/\__|_|
-
- *****************************************************************************/
-
-#define mark_as_done(irn, pos) set_irn_link(irn, INT_TO_PTR(pos+1))
-#define has_been_done(irn, pos) (PTR_TO_INT(get_irn_link(irn)) > pos)
-
-/**
- * Insert a copy for the argument of @p start_phi found at position @p pos.
- * Also searches a phi-loop of arbitrary length to detect and resolve
- * the class of phi-swap-problems. To search for a loop recursion is used.
- *
- * 1) Simplest case (phi with a non-phi arg):
- * A single copy is inserted.
- *
- * 2) Phi chain (phi (with phi-arg)* with non=phi arg):
- * Several copies are placed, each after returning from recursion.
- *
- * 3) Phi-loop:
- * On detection a loop breaker is inserted, which is a copy of the start_phi.
- * This copy then pretends beeing the argumnent of the last phi.
- * Now case 2) can be used.
- *
- * The values of @p start_phi and @p pos never change during recursion.
- *
- * @p raenv Environment with all the stuff needed
- * @p start_phi Phi node to process
- * @p pos Argument position to insert copy/copies for
- * @p curr_phi Phi node currently processed during recursion. Equals start_phi on initial call
- *
- * @return NULL If no copy is necessary
- * NULL If the phi has already been processed at this pos
- * Link field is used to keep track of processed positions
- * In all other cases the ir_node *copy which was placed is returned.
- */
-static ir_node *insert_copies(be_raext_env_t *raenv, ir_node *start_phi, int pos, ir_node *curr_phi) {
- ir_node *arg = get_irn_n(curr_phi, pos);
- ir_node *arg_blk = get_nodes_block(arg);
- ir_node *pred_blk = get_Block_cfgpred_block(get_nodes_block(curr_phi), pos);
- ir_node *curr_cpy, *last_cpy;
-
- assert(is_Phi(start_phi) && is_Phi(curr_phi));
-
- if (has_been_done(start_phi, pos))
- return NULL;
-
- /* In case this is a 'normal' phi we insert at the
- * end of the pred block before cf nodes */
- last_cpy = sched_skip(pred_blk, 0, sched_skip_cf_predicator, raenv->aenv);
- last_cpy = sched_next(last_cpy);
-
- /* If we detect a loop stop recursion. */
- if (arg == start_phi) {
- ir_node *loop_breaker;
- if (start_phi == curr_phi) {
- /* Phi directly uses itself. No copy necessary */
- return NULL;
- }
-
- /* At least 2 phis are involved */
- /* Insert a loop breaking copy (an additional variable T) */
- loop_breaker = be_new_Copy(raenv->cls, raenv->irg, pred_blk, start_phi);
- sched_add_before(last_cpy, loop_breaker);
-
- arg = loop_breaker;
- }
-
- /* If arg is a phi in the same block we have to continue search */
- if (is_Phi(arg) && arg_blk == get_nodes_block(start_phi))
- last_cpy = insert_copies(raenv, start_phi, pos, arg);
-
- /* Insert copy of argument (may be the loop-breaker) */
- curr_cpy = be_new_Copy(raenv->cls, raenv->irg, pred_blk, arg);
- set_irn_n(curr_phi, pos, curr_cpy);
- mark_as_done(curr_phi, pos);
- sched_add_before(last_cpy, curr_cpy);
- return curr_cpy;
-}
-
-
-/**
- * Perform simple SSA-destruction with copies.
- * The order of processing _must_ be
- * for all positions {
- * for all phis {
- * doit
- * }
- * }
- * else the magic to keep track of processed phi-positions will fail in
- * function 'insert_copies'
- */
-static void ssa_destr_simple_walker(ir_node *blk, void *env) {
- be_raext_env_t *raenv = env;
- int pos, max;
- ir_node *phi;
-
- /* for all argument positions of the phis */
- for (pos=0, max=get_irn_arity(blk); pos<max; ++pos) {
-
- /* for all phi nodes (which are scheduled first) */
- sched_foreach(blk, phi) {
- if (!is_Phi(phi))
- break;
-
- if (arch_irn_is(raenv->aenv, phi, ignore))
- continue;
-
- raenv->cls = arch_get_irn_reg_class(raenv->aenv, phi, -1);
- insert_copies(raenv, phi, pos, phi);
- }
- }
-}
-
-
-static void ssa_destr_simple(be_raext_env_t *raenv) {
- be_clear_links(raenv->irg);
- irg_block_walk_graph(raenv->irg, ssa_destr_simple_walker, NULL, raenv);
-}
-
-
-static void ssa_destr_rastello(be_raext_env_t *raenv) {
- assert(0 && "NYI");
- exit(0xDeadBeef);
- /*
- phi_class_compute(raenv->irg);
- irg_block_walk_graph(irg, ssa_destr_rastello, NULL, &raenv);
- */
-}
-
-/******************************************************************************
- __ __ _ ___ __ __
- \ \ / / | | |__ \ \ \ / /
- \ \ / /_ _| |___ ) | \ \ / /_ _ _ __ ___
- \ \/ / _` | / __| / / \ \/ / _` | '__/ __|
- \ / (_| | \__ \ / /_ \ / (_| | | \__ \
- \/ \__,_|_|___/ |____| \/ \__,_|_| |___/
- *****************************************************************************/
-
-/**
- * This struct maps a variable (nr) to the values belonging to this variable
- */
-struct _var_info_t {
- int var_nr; /* the key */
- pset *values; /* the ssa-values belonging to this variable */
-};
-
-#define SET_REMOVED -1
-
-/**
- * The link field of an irn points to the var_info struct
- * representing the corresponding variable.
- */
-#define set_var_info(irn, vi) set_irn_link(irn, vi)
-#define get_var_info(irn) ((var_info_t *)get_irn_link(irn))
-
-#define HASH_VAR_NR(var_nr) var_nr
-
-static int compare_var_infos(const void *e1, const void *e2, size_t size) {
- const var_info_t *v1 = e1;
- const var_info_t *v2 = e2;
-
- if (v1->var_nr == SET_REMOVED || v2->var_nr == SET_REMOVED)
- return 1;
-
- return v1->var_nr != v2->var_nr;
-}
-
-static INLINE var_info_t *var_find(set *vars, int var_nr) {
- var_info_t vi;
- vi.var_nr = var_nr;
-
- return set_find(vars, &vi, sizeof(vi), HASH_VAR_NR(var_nr));
-}
-
-static INLINE var_info_t *var_find_or_insert(set *vars, int var_nr) {
- var_info_t vi, *found;
- memset(&vi, 0, sizeof(vi));
- vi.var_nr = var_nr;
-
- found = set_insert(vars, &vi, sizeof(vi), HASH_VAR_NR(var_nr));
-
- if (!found->values)
- found->values = pset_new_ptr(1);
-
- return found;
-}
-
-/**
- * Adds a value to a variable. Sets all pointers accordingly.
- */
-static INLINE var_info_t *var_add_value(be_raext_env_t *raenv, int var_nr, ir_node *irn) {
- var_info_t *vi = var_find_or_insert(raenv->vars, var_nr);
-
- /* var 2 value mapping */
- pset_insert_ptr(vi->values, irn);
-
- /* value 2 var mapping */
- set_var_info(irn, vi);
-
- return vi;
-}
-
-static INLINE pset *get_var_values(be_raext_env_t *raenv, int var_nr) {
- var_info_t *vi = var_find(raenv->vars, var_nr);
- assert(vi && "Variable does not exist");
- return vi->values;
-}
-
-/**
- * Define variables (numbers) for all SSA-values.
- * All values in a phi class get assigned the same variable name.
- * The link field maps values to the var-name
- */
-static void values_to_vars(ir_node *irn, void *env) {
- be_raext_env_t *raenv = env;
- int nr;
- pset *vals;
-
- if(arch_get_irn_reg_class(raenv->aenv, irn, -1) == NULL)
- return;
-
- vals = get_phi_class(irn);
-
- if (vals) {
- nr = get_irn_node_nr(get_first_phi(vals));
- } else {
- /* not a phi class member, value == var */
- nr = get_irn_node_nr(irn);
- vals = pset_new_ptr(1);
- pset_insert_ptr(vals, irn);
- }
-
- /* values <--> var mapping */
- pset_foreach(vals, irn) {
- DBG((raenv->dbg, 0, "Var %d contains %+F\n", nr, irn));
- var_add_value(raenv, nr, irn);
- }
-}
/******************************************************************************
static void extract_vars_of_cls(be_raext_env_t *raenv) {
int count = 0;
- var_info_t *vi;
+ be_var_info_t *vi;
raenv->cls_vars = xmalloc(set_count(raenv->vars) * sizeof(*raenv->cls_vars));
assert(raenv->cls_vars);
#define UNSPILLABLE -1
-static INLINE int get_spill_costs(be_raext_env_t *raenv, var_info_t *vi) {
+static INLINE int get_spill_costs(be_raext_env_t *raenv, be_var_info_t *vi) {
ir_node *irn;
int c_spills=0, c_reloads=0;
fprintf(f, "\nnodes {\n");
for (i=0; i<raenv->n_cls_vars; ++i) {
- var_info_t *vi = raenv->cls_vars[i];
+ be_var_info_t *vi = raenv->cls_vars[i];
if (vi->var_nr == SET_REMOVED)
continue;
static void dump_interferences(be_raext_env_t *raenv) {
int i,o;
- var_info_t *vi1, *vi2;
+ be_var_info_t *vi1, *vi2;
ir_node *irn1, *irn2;
FILE *f = raenv->f;
be_raext_env_t *raenv = env;
arch_register_req_t req;
int pos, max;
- var_info_t *vi1, *vi2;
+ be_var_info_t *vi1, *vi2;
if (arch_get_irn_reg_class(raenv->aenv, irn, -1) != raenv->cls || arch_irn_is(raenv->aenv, irn, ignore))
return;
- vi1 = get_var_info(irn);
+ vi1 = be_get_var_info(irn);
/* copies have affinities */
if (arch_irn_classify(raenv->aenv, irn) == arch_irn_class_copy) {
ir_node *other = be_get_Copy_op(irn);
if (! arch_irn_is(raenv->aenv, other, ignore)) {
- vi2 = get_var_info(other);
+ vi2 = be_get_var_info(other);
fprintf(raenv->f, "(%d, %d, %d)\n", vi1->var_nr, vi2->var_nr, get_affinity_weight(irn));
}
arch_get_register_req(raenv->aenv, &req, irn, pos);
if (arch_register_req_is(&req, should_be_same) && arch_irn_is(raenv->aenv, req.other_same, ignore)) {
- vi2 = get_var_info(req.other_same);
+ vi2 = be_get_var_info(req.other_same);
fprintf(raenv->f, "(%d, %d, %d)\n", vi1->var_nr, vi2->var_nr, get_affinity_weight(irn));
}
int ret_status;
snprintf(cmd_line, sizeof(cmd_line), "%s -i %s -o %s", prog_to_call, out_file, result_file);
+ cmd_line[sizeof(cmd_line) - 1] = '\0';
ret_status = system(cmd_line);
assert(ret_status != -1 && "Invokation of external register allocator failed");
* Spill a variable and add reloads before all uses.
*/
static INLINE void var_add_spills_and_reloads(be_raext_env_t *raenv, int var_nr) {
- var_info_t *vi = var_find(raenv->vars, var_nr);
+ be_var_info_t *vi = be_var_find(raenv->vars, var_nr);
ir_node *spill=NULL, *ctx, *irn;
ir_mode *mode;
const ir_edge_t *edge, *ne;
/* ...add new vars for each non-phi-member */
pset_foreach(spills, irn) {
ir_node *spilled = get_irn_n(irn, be_pos_Spill_val);
- raenv->cls_vars[raenv->n_cls_vars++] = var_add_value(raenv, get_irn_node_nr(spilled), spilled);
+ raenv->cls_vars[raenv->n_cls_vars++] = be_var_add_value(raenv->vars, get_irn_node_nr(spilled), spilled);
}
}
/* add new variables for all reloads */
pset_foreach(reloads, irn) {
assert(get_irn_node_nr(irn) != 1089);
- raenv->cls_vars[raenv->n_cls_vars++] = var_add_value(raenv, get_irn_node_nr(irn), irn);
+ raenv->cls_vars[raenv->n_cls_vars++] = be_var_add_value(raenv->vars, get_irn_node_nr(irn), irn);
}
del_pset(spills);
is_allocation = 1;
while (fscanf(f, " %d %d ", &var_nr, ®_nr) == 2) {
ir_node *irn;
- pset *vals = get_var_values(raenv, var_nr);
+ pset *vals = be_get_var_values(raenv->vars, var_nr);
assert(vals && "Variable nr does not exist!");
pset_foreach(vals, irn)
int i, o;
for (i=0; i<raenv->n_cls_vars; ++i) {
- var_info_t *vi1 = raenv->cls_vars[i];
+ be_var_info_t *vi1 = raenv->cls_vars[i];
if (vi1->var_nr == SET_REMOVED)
continue;
for (o=0; o<i; ++o) {
- var_info_t *vi2 = raenv->cls_vars[o];
+ be_var_info_t *vi2 = raenv->cls_vars[o];
ir_node *irn1, *irn2;
if (vi2->var_nr == SET_REMOVED)
/**
* Default values for options
*/
-static void (*ssa_destr)(be_raext_env_t*) = ssa_destr_simple;
+static set* (*ssa_destr)(ir_graph*,const arch_env_t*) = be_ssa_destr_simple;
static char callee[128] = "\"E:/user/kimohoff/public/register allocator\"";
//static char callee[128] = "/ben/kimohoff/ipd-registerallocator/register_allocator";
* Read in results and apply them
*
*/
-static void be_ra_extern_main(const be_irg_t *bi) {
+static be_ra_timer_t *be_ra_extern_main(const be_irg_t *bi) {
be_main_env_t *env = bi->main_env;
ir_graph *irg = bi->irg;
be_raext_env_t raenv;
int clsnr, clss;
- var_info_t *vi;
compute_doms(irg);
edges_assure(irg);
raenv.irg = irg;
raenv.aenv = env->arch_env;
raenv.dom_info = be_compute_dominance_frontiers(irg);
- raenv.vars = new_set(compare_var_infos, 64);
FIRM_DBG_REGISTER(raenv.dbg, "firm.be.raextern");
/* Insert copies for constraints */
be_dump(irg, "-extern-constr", dump_ir_block_graph_sched);
/* SSA destruction respectively transformation into "Conventional SSA" */
- ssa_destr(&raenv);
+ raenv.vars = be_ssa_destr_simple(irg, env->arch_env);
be_dump(irg, "-extern-ssadestr", dump_ir_block_graph_sched);
- /* Mapping of SSA-Values <--> Variables */
- phi_class_compute(irg);
- be_clear_links(irg);
- irg_walk_graph(irg, values_to_vars, NULL, &raenv);
-
/* For all register classes */
for(clsnr = 0, clss = arch_isa_get_n_reg_class(raenv.aenv->isa); clsnr < clss; ++clsnr) {
be_dump(irg, "-extern-alloc", dump_ir_block_graph_sched);
/* Clean up */
- set_foreach(raenv.vars, vi)
- del_pset(vi->values);
- del_set(raenv.vars);
+ free_ssa_destr_simple(raenv.vars);
be_free_dominance_frontiers(raenv.dom_info);
+
+ return NULL;
}
/******************************************************************************
static const lc_opt_enum_func_ptr_items_t ssa_destr_items[] = {
- { "simple", (int (*)()) ssa_destr_simple }, /* TODO make (void*) casts nicer */
- { "rastello", (int (*)()) ssa_destr_rastello },
+ { "simple", (int (*)()) be_ssa_destr_simple }, /* TODO make (void*) casts nicer */
{ NULL, NULL }
};
projects / libfirm / blobdiff