X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbespillutil.c;h=91ada07caa6a899989c70dbc0191dec997936938;hb=34e3b8d50bce639e760da7233524a4db85c80290;hp=fa103f1d02c9aa9234b0b444f8131e159d179b2c;hpb=f81eb3aa65ff7a6d9cfe1988d1b43882e477d0ed;p=libfirm diff --git a/ir/be/bespillutil.c b/ir/be/bespillutil.c index fa103f1d0..91ada07ca 100644 --- a/ir/be/bespillutil.c +++ b/ir/be/bespillutil.c @@ -1,20 +1,6 @@ /* - * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved. - * * This file is part of libFirm. - * - * This file may be distributed and/or modified under the terms of the - * GNU General Public License version 2 as published by the Free Software - * Foundation and appearing in the file LICENSE.GPL included in the - * packaging of this file. - * - * Licensees holding valid libFirm Professional Edition licenses may use - * this file in accordance with the libFirm Commercial License. - * Agreement provided with the Software. - * - * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE - * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE. + * Copyright (C) 2012 University of Karlsruhe. */ /** @@ -53,7 +39,7 @@ #include "belive_t.h" #include "benode.h" #include "bechordal_t.h" -#include "bestatevent.h" +#include "statev_t.h" #include "bessaconstr.h" #include "beirg.h" #include "beirgmod.h" @@ -68,7 +54,6 @@ DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL;) typedef struct reloader_t reloader_t; struct reloader_t { reloader_t *next; - ir_node *can_spill_after; ir_node *reloader; ir_node *rematted_node; int remat_cost_delta; /** costs needed for rematerialization, @@ -92,6 +77,9 @@ struct spill_info_t { double spill_costs; /**< costs needed for spilling the value */ const arch_register_class_t *reload_cls; /** the register class in which the reload should be placed */ + bool spilled_phi; /* true when the whole Phi has been spilled and + will be replaced with a PhiM. false if only the + value of the Phi gets spilled */ }; struct spill_env_t { @@ -102,8 +90,7 @@ struct spill_env_t { int reload_cost; /**< the cost of a reload node */ set *spills; /**< all spill_info_t's, which must be placed */ - ir_nodeset_t mem_phis; /**< set of all spilled phis. */ - ir_exec_freq *exec_freq; + spill_info_t **mem_phis; /**< set of all spilled phis. */ unsigned spill_count; unsigned reload_count; @@ -132,14 +119,15 @@ static spill_info_t *get_spillinfo(const spill_env_t *env, ir_node *value) int hash = hash_irn(value); info.to_spill = value; - res = (spill_info_t*)set_find(env->spills, &info, sizeof(info), hash); + res = set_find(spill_info_t, env->spills, &info, sizeof(info), hash); if (res == NULL) { info.reloaders = NULL; info.spills = NULL; info.spill_costs = -1; info.reload_cls = NULL; - res = (spill_info_t*)set_insert(env->spills, &info, sizeof(info), hash); + info.spilled_phi = false; + res = set_insert(spill_info_t, env->spills, &info, sizeof(info), hash); } return res; @@ -153,10 +141,9 @@ spill_env_t *be_new_spill_env(ir_graph *irg) env->spills = new_set(cmp_spillinfo, 1024); env->irg = irg; env->arch_env = arch_env; - ir_nodeset_init(&env->mem_phis); + env->mem_phis = NEW_ARR_F(spill_info_t*, 0); env->spill_cost = arch_env->spill_cost; env->reload_cost = arch_env->reload_cost; - env->exec_freq = be_get_irg_exec_freq(irg); obstack_init(&env->obst); env->spill_count = 0; @@ -170,7 +157,7 @@ spill_env_t *be_new_spill_env(ir_graph *irg) void be_delete_spill_env(spill_env_t *env) { del_set(env->spills); - ir_nodeset_destroy(&env->mem_phis); + DEL_ARR_F(env->mem_phis); obstack_free(&env->obst, NULL); free(env); } @@ -227,9 +214,7 @@ void be_add_spill(spill_env_t *env, ir_node *to_spill, ir_node *after) spill_info->spills = spill; } -void be_add_reload2(spill_env_t *env, ir_node *to_spill, ir_node *before, - ir_node *can_spill_after, const arch_register_class_t *reload_cls, - int allow_remat) +void be_add_reload(spill_env_t *env, ir_node *to_spill, ir_node *before, const arch_register_class_t *reload_cls, int allow_remat) { spill_info_t *info; reloader_t *rel; @@ -248,14 +233,13 @@ void be_add_reload2(spill_env_t *env, ir_node *to_spill, ir_node *before, } } - assert(!is_Proj(before) && !be_is_Keep(before)); + assert(!be_is_Keep(before)); /* put reload into list */ rel = OALLOC(&env->obst, reloader_t); rel->next = info->reloaders; rel->reloader = before; rel->rematted_node = NULL; - rel->can_spill_after = can_spill_after; rel->remat_cost_delta = allow_remat ? 0 : REMAT_COST_INFINITE; info->reloaders = rel; @@ -266,13 +250,6 @@ void be_add_reload2(spill_env_t *env, ir_node *to_spill, ir_node *before, to_spill, before, allow_remat ? "" : " not")); } -void be_add_reload(spill_env_t *senv, ir_node *to_spill, ir_node *before, - const arch_register_class_t *reload_cls, int allow_remat) -{ - be_add_reload2(senv, to_spill, before, to_spill, reload_cls, allow_remat); - -} - ir_node *be_get_end_of_block_insertion_point(const ir_node *block) { ir_node *last = sched_last(block); @@ -326,15 +303,6 @@ static ir_node *get_block_insertion_point(ir_node *block, int pos) return be_get_end_of_block_insertion_point(predblock); } -void be_add_reload_at_end(spill_env_t *env, ir_node *to_spill, - const ir_node *block, - const arch_register_class_t *reload_cls, - int allow_remat) -{ - ir_node *before = be_get_end_of_block_insertion_point(block); - be_add_reload(env, to_spill, before, reload_cls, allow_remat); -} - void be_add_reload_on_edge(spill_env_t *env, ir_node *to_spill, ir_node *block, int pos, const arch_register_class_t *reload_cls, int allow_remat) @@ -347,10 +315,13 @@ void be_spill_phi(spill_env_t *env, ir_node *node) { ir_node *block; int i, arity; + spill_info_t *info; assert(is_Phi(node)); - ir_nodeset_insert(&env->mem_phis, node); + info = get_spillinfo(env, node); + info->spilled_phi = true; + ARR_APP1(spill_info_t*, env->mem_phis, info); /* create spills for the phi arguments */ block = get_nodes_block(node); @@ -441,20 +412,16 @@ static void spill_phi(spill_env_t *env, spill_info_t *spillinfo) ir_graph *irg = env->irg; ir_node *phi = spillinfo->to_spill; ir_node *block = get_nodes_block(phi); - ir_node *unknown; - ir_node **ins; spill_t *spill; int i; - int arity; - assert(is_Phi(phi)); assert(!get_opt_cse()); DBG((dbg, LEVEL_1, "spilling Phi %+F:\n", phi)); /* build a new PhiM */ - arity = get_irn_arity(phi); - ins = ALLOCAN(ir_node*, arity); - unknown = new_r_Unknown(irg, mode_M); + int const arity = get_Phi_n_preds(phi); + ir_node **const ins = ALLOCAN(ir_node*, arity); + ir_node *const unknown = new_r_Unknown(irg, mode_M); for (i = 0; i < arity; ++i) { ins[i] = unknown; } @@ -490,15 +457,11 @@ static void spill_phi(spill_env_t *env, spill_info_t *spillinfo) */ static void spill_node(spill_env_t *env, spill_info_t *spillinfo) { - ir_node *to_spill; - /* node is already spilled */ if (spillinfo->spills != NULL && spillinfo->spills->spill != NULL) return; - to_spill = spillinfo->to_spill; - - if (is_Phi(to_spill) && ir_nodeset_contains(&env->mem_phis, to_spill)) { + if (spillinfo->spilled_phi) { spill_phi(env, spillinfo); } else { spill_irn(env, spillinfo); @@ -525,7 +488,7 @@ static int is_value_available(spill_env_t *env, const ir_node *arg, if (is_Unknown(arg) || is_NoMem(arg)) return 1; - if (be_is_Spill(skip_Proj_const(arg))) + if (arch_irn_is(skip_Proj_const(arg), spill)) return 1; if (arg == get_irg_frame(env->irg)) @@ -618,15 +581,8 @@ static ir_node *do_remat(spill_env_t *env, ir_node *spilled, ir_node *reloader) { int i, arity; ir_node *res; - ir_node *bl; ir_node **ins; - if (is_Block(reloader)) { - bl = reloader; - } else { - bl = get_nodes_block(reloader); - } - ins = ALLOCAN(ir_node*, get_irn_arity(spilled)); for (i = 0, arity = get_irn_arity(spilled); i < arity; ++i) { ir_node *arg = get_irn_n(spilled, i); @@ -641,6 +597,7 @@ static ir_node *do_remat(spill_env_t *env, ir_node *spilled, ir_node *reloader) } /* create a copy of the node */ + ir_node *const bl = get_nodes_block(reloader); res = new_ir_node(get_irn_dbg_info(spilled), env->irg, bl, get_irn_op(spilled), get_irn_mode(spilled), get_irn_arity(spilled), ins); @@ -662,7 +619,7 @@ static ir_node *do_remat(spill_env_t *env, ir_node *spilled, ir_node *reloader) double be_get_spill_costs(spill_env_t *env, ir_node *to_spill, ir_node *before) { ir_node *block = get_nodes_block(before); - double freq = get_block_execfreq(env->exec_freq, block); + double freq = get_block_execfreq(block); (void) to_spill; return env->spill_cost * freq; @@ -683,8 +640,8 @@ unsigned be_get_reload_costs_no_weight(spill_env_t *env, const ir_node *to_spill double be_get_reload_costs(spill_env_t *env, ir_node *to_spill, ir_node *before) { - ir_node *block = get_nodes_block(before); - double freq = get_block_execfreq(env->exec_freq, block); + ir_node *block = get_nodes_block(before); + double freq = get_block_execfreq(block); if (be_do_remats) { /* is the node rematerializable? */ @@ -790,9 +747,9 @@ static void determine_spill_costs(spill_env_t *env, spill_info_t *spillinfo) } spill_block = get_nodes_block(insn); - spill_execfreq = get_block_execfreq(env->exec_freq, spill_block); + spill_execfreq = get_block_execfreq(spill_block); - if (is_Phi(to_spill) && ir_nodeset_contains(&env->mem_phis, to_spill)) { + if (spillinfo->spilled_phi) { /* TODO calculate correct costs... * (though we can't remat this node anyway so no big problem) */ spillinfo->spill_costs = env->spill_cost * spill_execfreq; @@ -808,7 +765,7 @@ static void determine_spill_costs(spill_env_t *env, spill_info_t *spillinfo) s = spillinfo->spills; for ( ; s != NULL; s = s->next) { ir_node *spill_block = get_block(s->after); - double freq = get_block_execfreq(env->exec_freq, spill_block); + double freq = get_block_execfreq(spill_block); spills_execfreq += freq; } @@ -872,22 +829,20 @@ void make_spill_locations_dominate_irn(spill_env_t *env, ir_node *irn) void be_insert_spills_reloads(spill_env_t *env) { - const ir_exec_freq *exec_freq = env->exec_freq; - spill_info_t *si; - ir_nodeset_iterator_t iter; - ir_node *node; + size_t n_mem_phis = ARR_LEN(env->mem_phis); + size_t i; be_timer_push(T_RA_SPILL_APPLY); /* create all phi-ms first, this is needed so, that phis, hanging on spilled phis work correctly */ - foreach_ir_nodeset(&env->mem_phis, node, iter) { - spill_info_t *info = get_spillinfo(env, node); + for (i = 0; i < n_mem_phis; ++i) { + spill_info_t *info = env->mem_phis[i]; spill_node(env, info); } /* process each spilled node */ - foreach_set(env->spills, spill_info_t*, si) { + foreach_set(env->spills, spill_info_t, si) { ir_node *to_spill = si->to_spill; ir_node **copies = NEW_ARR_F(ir_node*, 0); double all_remat_costs = 0; /** costs when we would remat all nodes */ @@ -934,7 +889,7 @@ void be_insert_spills_reloads(spill_env_t *env) remat_cost_delta = remat_cost - env->reload_cost; rld->remat_cost_delta = remat_cost_delta; block = is_Block(reloader) ? reloader : get_nodes_block(reloader); - freq = get_block_execfreq(exec_freq, block); + freq = get_block_execfreq(block); all_remat_costs += remat_cost_delta * freq; DBG((dbg, LEVEL_2, "\tremat costs delta before %+F: " "%d (rel %f)\n", reloader, remat_cost_delta, @@ -994,16 +949,6 @@ void be_insert_spills_reloads(spill_env_t *env) be_ssa_construction_add_copies(&senv, copies, ARR_LEN(copies)); be_ssa_construction_fix_users(&senv, to_spill); -#if 0 - /* no need to enable this as long as we invalidate liveness - after this function... */ - be_ssa_construction_update_liveness_phis(&senv); - be_liveness_update(to_spill); - len = ARR_LEN(copies); - for (i = 0; i < len; ++i) { - be_liveness_update(lv, copies[i]); - } -#endif be_ssa_construction_destroy(&senv); } /* need to reconstruct SSA form if we had multiple spills */