-
-
-/**
- * Transforms a SymConst.
- *
- * @param mod the debug module
- * @param block the block the new node should belong to
- * @param node the ir SymConst node
- * @param mode mode of the SymConst
- * @return the created ia32 Const node
- */
-static ir_node *gen_SymConst(ia32_transform_env_t *env) {
- ir_node *cnst;
- dbg_info *dbg = env->dbg;
- ir_mode *mode = env->mode;
- ir_graph *irg = env->irg;
- ir_node *block = env->block;
-
- if (mode_is_float(mode)) {
- FP_USED(env->cg);
- if (USE_SSE2(env->cg))
- cnst = new_rd_ia32_xConst(dbg, irg, block, get_irg_no_mem(irg), mode);
- else
- cnst = new_rd_ia32_vfConst(dbg, irg, block, get_irg_no_mem(irg), mode);
- }
- else
- cnst = new_rd_ia32_Const(dbg, irg, block, get_irg_no_mem(irg), mode);
-
- set_ia32_Const_attr(cnst, env->irn);
-
- return cnst;
-}
-
-/**
- * Get a primitive type for a mode.
- */
-static ir_type *get_prim_type(pmap *types, ir_mode *mode)
-{
- pmap_entry *e = pmap_find(types, mode);
- ir_type *res;
-
- if (! e) {
- char buf[64];
- snprintf(buf, sizeof(buf), "prim_type_%s", get_mode_name(mode));
- res = new_type_primitive(new_id_from_str(buf), mode);
- pmap_insert(types, mode, res);
- }
- else
- res = e->value;
- return res;
-}
-
-/**
- * Get an entity that is initialized with a tarval
- */
-static entity *get_entity_for_tv(ia32_code_gen_t *cg, ir_node *cnst)
-{
- tarval *tv = get_Const_tarval(cnst);
- pmap_entry *e = pmap_find(cg->isa->tv_ent, tv);
- entity *res;
- ir_graph *rem;
-
- if (! e) {
- ir_mode *mode = get_irn_mode(cnst);
- ir_type *tp = get_Const_type(cnst);
- if (tp == firm_unknown_type)
- tp = get_prim_type(cg->isa->types, mode);
-
- res = new_entity(get_glob_type(), unique_id("ia32FloatCnst_%u"), tp);
-
- set_entity_ld_ident(res, get_entity_ident(res));
- set_entity_visibility(res, visibility_local);
- set_entity_variability(res, variability_constant);
- set_entity_allocation(res, allocation_static);
-
- /* we create a new entity here: It's initialization must resist on the
- const code irg */
- rem = current_ir_graph;
- current_ir_graph = get_const_code_irg();
- set_atomic_ent_value(res, new_Const_type(tv, tp));
- current_ir_graph = rem;
-
- pmap_insert(cg->isa->tv_ent, tv, res);
- }
- else
- res = e->value;
- return res;
-}
-
-/**
- * Transforms a Const.
- *
- * @param mod the debug module
- * @param block the block the new node should belong to
- * @param node the ir Const node
- * @param mode mode of the Const
- * @return the created ia32 Const node
- */
-static ir_node *gen_Const(ia32_transform_env_t *env) {
- ir_node *cnst;
- symconst_symbol sym;
- ir_graph *irg = env->irg;
- ir_node *block = env->block;
- ir_node *node = env->irn;
- dbg_info *dbg = env->dbg;
- ir_mode *mode = env->mode;
-
- if (mode_is_float(mode)) {
- FP_USED(env->cg);
- if (! USE_SSE2(env->cg)) {
- cnst_classify_t clss = classify_Const(node);
-
- if (clss == CNST_NULL)
- return new_rd_ia32_vfldz(dbg, irg, block, mode);
- else if (clss == CNST_ONE)
- return new_rd_ia32_vfld1(dbg, irg, block, mode);
- }
- sym.entity_p = get_entity_for_tv(env->cg, node);
-
- cnst = new_rd_SymConst(dbg, irg, block, sym, symconst_addr_ent);
- env->irn = cnst;
- cnst = gen_SymConst(env);
- }
- else {
- cnst = new_rd_ia32_Const(dbg, irg, block, get_irg_no_mem(irg), get_irn_mode(node));
- set_ia32_Const_attr(cnst, node);
- }
- return cnst;
-}
-
-
-
-/**
- * Transforms (all) Const's into ia32_Const and places them in the
- * block where they are used (or in the cfg-pred Block in case of Phi's).
- * Additionally all reference nodes are changed into mode_Is nodes.
- */
-void ia32_place_consts_set_modes(ir_node *irn, void *env) {
- ia32_code_gen_t *cg = env;
- ia32_transform_env_t tenv;
- ir_mode *mode;
- ir_node *pred, *cnst;
- int i;
- opcode opc;
-
- if (is_Block(irn))
- return;
-
- mode = get_irn_mode(irn);
-
- /* transform all reference nodes into mode_Is nodes */
- if (mode_is_reference(mode)) {
- mode = mode_Is;
- set_irn_mode(irn, mode);
- }
-
- tenv.block = get_nodes_block(irn);
- tenv.cg = cg;
- tenv.irg = cg->irg;
- DEBUG_ONLY(tenv.mod = cg->mod;)
-
- /* Loop over all predecessors and check for Sym/Const nodes */
- for (i = get_irn_arity(irn) - 1; i >= 0; --i) {
- pred = get_irn_n(irn, i);
- cnst = NULL;
- opc = get_irn_opcode(pred);
- tenv.irn = pred;
- tenv.mode = get_irn_mode(pred);
- tenv.dbg = get_irn_dbg_info(pred);
-
- /* If it's a Phi, then we need to create the */
- /* new Const in it's predecessor block */
- if (is_Phi(irn)) {
- tenv.block = get_Block_cfgpred_block(get_nodes_block(irn), i);
- }
-
- /* put the const into the block where the original const was */
- if (! (cg->opt & IA32_OPT_PLACECNST)) {
- tenv.block = get_nodes_block(pred);
- }
-
- switch (opc) {
- case iro_Const:
- cnst = gen_Const(&tenv);
- break;
- case iro_SymConst:
- cnst = gen_SymConst(&tenv);
- break;
- default:
- break;
- }
-
- /* if we found a const, then set it */
- if (cnst) {
- set_irn_n(irn, i, cnst);
- }
- }
-}
-
-
-