X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbeutil.c;h=c196ff78d4a0a1d8b81f439c14241c633853c3eb;hb=b0e09fe0aada2e5d9dc0299e969b3c93c1092d97;hp=844fcf27f75f942506432df9bdb9cab8c57180a6;hpb=a51b19f667731104d1277df71b26daa2d3816189;p=libfirm diff --git a/ir/be/beutil.c b/ir/be/beutil.c index 844fcf27f..c196ff78d 100644 --- a/ir/be/beutil.c +++ b/ir/be/beutil.c @@ -1,3 +1,28 @@ +/* + * Copyright (C) 1995-2007 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. + */ + +/** + * @file + * @brief Contains some useful function for the backend. + * @author Sebastian Hack + * @version $Id$ + */ #ifdef HAVE_CONFIG_H #include "config.h" #endif @@ -15,10 +40,11 @@ #include "irgopt.h" #include "irtools.h" #include "irprintf.h" +#include "iredges.h" #include "beutil.h" #include "besched_t.h" -#include "bearch.h" +#include "bearch_t.h" /* Get an always empty set. */ pset *be_empty_set(void) @@ -33,8 +59,8 @@ pset *be_empty_set(void) } struct dump_env { - FILE *f; - arch_env_t *env; + FILE *f; + arch_env_t *env; }; static void dump_allocated_block(ir_node *block, void *data) @@ -83,9 +109,9 @@ static void dump_allocated_block(ir_node *block, void *data) void dump_allocated_irg(arch_env_t *arch_env, ir_graph *irg, char *suffix) { char buf[1024]; - struct dump_env env; + struct dump_env env; - env.env = arch_env; + env.env = arch_env; ir_snprintf(buf, sizeof(buf), "%F-alloc%s.vcg", irg, suffix); @@ -97,46 +123,14 @@ void dump_allocated_irg(arch_env_t *arch_env, ir_graph *irg, char *suffix) } } -static void localize_const_walker(ir_node *irn, void *data) -{ - if(!is_Block(irn)) { - int i, n; - - for(i = 0, n = get_irn_arity(irn); i < n; ++i) { - ir_node *op = get_irn_n(irn, i); - if(get_irn_opcode(op) == iro_Const) { - ir_node *tgt_block, *cnst; - - /* Special treatment for phi nodes, because phi-usage is different */ - tgt_block = get_nodes_block(irn); - if(is_Phi(irn)) - tgt_block = get_nodes_block(get_irn_n(tgt_block, i)); - - /* - * We have to create the const node by ourselves, since the - * firmcons implementation always places it in the start block. - */ - cnst = new_ir_node(NULL, get_irn_irg(irn), - tgt_block, op_Const, get_irn_mode(op), 0, NULL); - cnst->attr.con.tv = get_Const_tarval(op); - set_irn_n(irn, i, cnst); - } - } - } -} - -void localize_consts(ir_graph *irg) -{ - irg_walk_graph(irg, localize_const_walker, NULL, NULL); - dead_node_elimination(irg); -} - /** * Edge hook to dump the schedule edges. */ static int sched_edge_hook(FILE *F, ir_node *irn) { - if(sched_is_scheduled(irn) && sched_has_prev(irn)) { + if (is_Proj(irn)) + return 1; + if (sched_is_scheduled(irn) && sched_has_prev(irn)) { ir_node *prev = sched_prev(irn); fprintf(F, "edge:{sourcename:\""); PRINT_NODEID(irn); @@ -178,7 +172,7 @@ void be_dump(ir_graph *irg, const char *suffix, void (*dumper)(ir_graph *, const if (irg != last_irg) { last_irg = irg; - nr = 0; + nr = strcmp(suffix, "-abi") ? 0 : 1; } snprintf(buf, sizeof(buf), "-%02d%s", nr++, suffix); @@ -190,16 +184,19 @@ void be_dump(ir_graph *irg, const char *suffix, void (*dumper)(ir_graph *, const static void collect_phis(ir_node *irn, void *data) { - if(is_Phi(irn)) { - ir_node *bl = get_nodes_block(irn); - set_irn_link(irn, get_irn_link(bl)); - set_irn_link(bl, irn); - } + (void) data; + if(is_Phi(irn)) { + ir_node *bl = get_nodes_block(irn); + set_irn_link(irn, get_irn_link(bl)); + set_irn_link(bl, irn); + } } void be_clear_links(ir_graph *irg) { + set_using_irn_link(irg); irg_walk_graph(irg, firm_clear_link, NULL, NULL); + clear_using_irn_link(irg); } void be_collect_phis(ir_graph *irg) @@ -207,22 +204,68 @@ void be_collect_phis(ir_graph *irg) irg_walk_graph(irg, collect_phis, NULL, NULL); } -/* FIXME: not used. can be deleted? */ -ir_node *dom_up_search(pset *accept, ir_node *start_point_exclusive) { - ir_node *irn, *idom; +static void count_num_reachable_nodes(ir_node *irn, void *env) +{ + int *num = env; + (*num)++; + (void) irn; +} + +unsigned get_num_reachable_nodes(ir_graph *irg) { + int num = 0; + irg_walk_graph(irg, count_num_reachable_nodes, NULL, &num); + return num; +} - /* search the current block */ - for (irn=sched_prev(start_point_exclusive); irn; irn=sched_prev(irn)) - if (pset_find_ptr(accept, irn)) - return irn; +/** + * Sets all node inputs to BAD node. + */ +void be_kill_node(ir_node *irn) { + ir_graph *irg = get_irn_irg(irn); - /* FIXME: This is obviously buggy: after the first recursive call idom is a block - and get_nodes_block will fail. - Moreover, why not a simple iteration instead of recursion */ - idom = get_Block_idom(get_nodes_block(start_point_exclusive)); + assert(!is_Bad(irn)); - if (idom) - return dom_up_search(accept, idom); /* continue search in idom-block */ - else - return NULL; /* this was the start block and we did not find an acceptable irn */ +#ifdef DEBUG_libfirm + { + int i, first; + first = 0 - ! is_Block(irn); + + for (i = get_irn_arity(irn) - 1; i >= first; --i) { + set_irn_n(irn, i, get_irg_bad(irg)); + } + } +#endif + + edges_node_deleted(irn, irg); +} + +/** + * Gets the Proj with number pn from irn. + */ +ir_node *be_get_Proj_for_pn(const ir_node *irn, long pn) { + const ir_edge_t *edge; + ir_node *proj; + assert(get_irn_mode(irn) == mode_T && "need mode_T"); + + foreach_out_edge(irn, edge) { + proj = get_edge_src_irn(edge); + + if (get_Proj_proj(proj) == pn) + return proj; + } + + return NULL; +} + +FILE *be_ffopen(const char *base, const char *ext, const char *mode) { + FILE *out; + char buf[1024]; + + snprintf(buf, sizeof(buf), "%s.%s", base, ext); + buf[sizeof(buf) - 1] = '\0'; + if (! (out = fopen(buf, mode))) { + fprintf(stderr, "Cannot open file %s in mode %s\n", buf, mode); + return NULL; + } + return out; }