initial support for exception handling

[libfirm] / ir / be / ia32 / ia32_new_nodes.c

/*
 * 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       Handling of ia32 specific firm opcodes.
 * @author      Christian Wuerdig
 * @version     $Id$
 *
 * This file implements the creation of the achitecture specific firm opcodes
 * and the coresponding node constructors for the ia32 assembler irg.
 */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <stdlib.h>

#include "irprog_t.h"
#include "irgraph_t.h"
#include "irnode_t.h"
#include "irmode_t.h"
#include "ircons_t.h"
#include "iropt_t.h"
#include "irop.h"
#include "firm_common_t.h"
#include "irvrfy_t.h"
#include "irprintf.h"
#include "iredges.h"
#include "error.h"
#include "raw_bitset.h"
#include "xmalloc.h"

#include "../bearch_t.h"

#include "bearch_ia32_t.h"
#include "ia32_nodes_attr.h"
#include "ia32_new_nodes.h"
#include "gen_ia32_regalloc_if.h"
#include "gen_ia32_machine.h"

/**
 * returns true if a node has x87 registers
 */
int ia32_has_x87_register(const ir_node *n) {
        assert(is_ia32_irn(n) && "Need ia32 node.");
        return is_irn_machine_user(n, 0);
}

/***********************************************************************************
 *      _                                   _       _             __
 *     | |                                 (_)     | |           / _|
 *   __| |_   _ _ __ ___  _ __   ___ _ __   _ _ __ | |_ ___ _ __| |_ __ _  ___ ___
 *  / _` | | | | '_ ` _ \| '_ \ / _ \ '__| | | '_ \| __/ _ \ '__|  _/ _` |/ __/ _ \
 * | (_| | |_| | | | | | | |_) |  __/ |    | | | | | ||  __/ |  | || (_| | (_|  __/
 *  \__,_|\__,_|_| |_| |_| .__/ \___|_|    |_|_| |_|\__\___|_|  |_| \__,_|\___\___|
 *                       | |
 *                       |_|
 ***********************************************************************************/

/**
 * Dumps the register requirements for either in or out.
 */
static void dump_reg_req(FILE *F, ir_node *n, const arch_register_req_t **reqs,
                         int inout) {
        char *dir = inout ? "out" : "in";
        int   max = inout ? get_ia32_n_res(n) : get_irn_arity(n);
        char  buf[1024];
        int   i;

        memset(buf, 0, sizeof(buf));

        if (reqs) {
                for (i = 0; i < max; i++) {
                        fprintf(F, "%sreq #%d =", dir, i);

                        if (reqs[i]->type == arch_register_req_type_none) {
                                fprintf(F, " n/a");
                        }

                        if (reqs[i]->type & arch_register_req_type_normal) {
                                fprintf(F, " %s", reqs[i]->cls->name);
                        }

                        if (reqs[i]->type & arch_register_req_type_limited) {
                                fprintf(F, " %s",
                                        arch_register_req_format(buf, sizeof(buf), reqs[i], n));
                        }

                        if (reqs[i]->type & arch_register_req_type_should_be_same) {
                                ir_fprintf(F, " same as %+F", get_irn_n(n, reqs[i]->other_same));
                        }

                        if (reqs[i]->type & arch_register_req_type_should_be_different) {
                                ir_fprintf(F, " different from %+F", get_irn_n(n, reqs[i]->other_different));
                        }

                        fprintf(F, "\n");
                }

                fprintf(F, "\n");
        }
        else {
                fprintf(F, "%sreq = N/A\n", dir);
        }
}

/**
 * Dumper interface for dumping ia32 nodes in vcg.
 * @param n        the node to dump
 * @param F        the output file
 * @param reason   indicates which kind of information should be dumped
 * @return 0 on success or != 0 on failure
 */
static int ia32_dump_node(ir_node *n, FILE *F, dump_reason_t reason) {
        ir_mode     *mode = NULL;
        int          bad  = 0;
        int          i, n_res, am_flav, flags;
        const arch_register_req_t **reqs;
        const arch_register_t     **slots;

        switch (reason) {
                case dump_node_opcode_txt:
                        fprintf(F, "%s", get_irn_opname(n));
                        break;

                case dump_node_mode_txt:
                        mode = get_irn_mode(n);

                        if (is_ia32_Ld(n) || is_ia32_St(n)) {
                                mode = get_ia32_ls_mode(n);
                        }

                        fprintf(F, "[%s]", mode ? get_mode_name(mode) : "?NOMODE?");
                        break;

                case dump_node_nodeattr_txt:
                        if (is_ia32_ImmConst(n) || is_ia32_ImmSymConst(n)) {
                                if(is_ia32_ImmSymConst(n)) {
                                        ir_entity *ent = get_ia32_Immop_symconst(n);
                                        ident *id = get_entity_ld_ident(ent);
                                        fprintf(F, "[SymC %s]", get_id_str(id));
                                } else {
                                        char buf[128];
                                        tarval *tv = get_ia32_Immop_tarval(n);

                                        tarval_snprintf(buf, sizeof(buf), tv);
                                        fprintf(F, "[%s]", buf);
                                }
                        }

                        if (! is_ia32_Lea(n)) {
                                if (is_ia32_AddrModeS(n)) {
                                        fprintf(F, "[AM S] ");
                                }
                                else if (is_ia32_AddrModeD(n)) {
                                        fprintf(F, "[AM D] ");
                                }
                        }

                        break;

                case dump_node_info_txt:
                        n_res = get_ia32_n_res(n);
                        fprintf(F, "=== IA32 attr begin ===\n");

                        /* dump IN requirements */
                        if (get_irn_arity(n) > 0) {
                                reqs = get_ia32_in_req_all(n);
                                dump_reg_req(F, n, reqs, 0);
                        }

                        /* dump OUT requirements */
                        if (n_res > 0) {
                                reqs = get_ia32_out_req_all(n);
                                dump_reg_req(F, n, reqs, 1);
                        }

                        /* dump assigned registers */
                        slots = get_ia32_slots(n);
                        if (slots && n_res > 0) {
                                for (i = 0; i < n_res; i++) {
                                        const arch_register_t *reg;

                                        /* retrieve "real" x87 register */
                                        if (ia32_has_x87_register(n))
                                                reg = get_ia32_attr(n)->x87[i + 2];
                                        else
                                                reg = slots[i];

                                        fprintf(F, "reg #%d = %s\n", i, reg ? arch_register_get_name(reg) : "n/a");
                                }
                                fprintf(F, "\n");
                        }

                        /* dump op type */
                        fprintf(F, "op = ");
                        switch (get_ia32_op_type(n)) {
                                case ia32_Normal:
                                        fprintf(F, "Normal");
                                        break;
                                case ia32_AddrModeD:
                                        fprintf(F, "AM Dest (Load+Store)");
                                        break;
                                case ia32_AddrModeS:
                                        fprintf(F, "AM Source (Load)");
                                        break;
                                default:
                                        fprintf(F, "unknown (%d)", get_ia32_op_type(n));
                                        break;
                        }
                        fprintf(F, "\n");

                        /* dump immop type */
                        fprintf(F, "immediate = ");
                        switch (get_ia32_immop_type(n)) {
                                case ia32_ImmNone:
                                        fprintf(F, "None");
                                        break;
                                case ia32_ImmConst:
                                        fprintf(F, "Const");
                                        break;
                                case ia32_ImmSymConst:
                                        fprintf(F, "SymConst");
                                        break;
                                default:
                                        fprintf(F, "unknown (%d)", get_ia32_immop_type(n));
                                        break;
                        }
                        fprintf(F, "\n");

                        /* dump supported am */
                        fprintf(F, "AM support = ");
                        switch (get_ia32_am_support(n)) {
                                case ia32_am_None:
                                        fprintf(F, "none");
                                        break;
                                case ia32_am_Source:
                                        fprintf(F, "source only (Load)");
                                        break;
                                case ia32_am_Dest:
                                        fprintf(F, "dest only (Load+Store)");
                                        break;
                                case ia32_am_Full:
                                        fprintf(F, "full");
                                        break;
                                default:
                                        fprintf(F, "unknown (%d)", get_ia32_am_support(n));
                                        break;
                        }
                        fprintf(F, "\n");

                        /* dump am flavour */
                        fprintf(F, "AM flavour =");
                        am_flav = get_ia32_am_flavour(n);
                        if (am_flav == ia32_am_N) {
                                fprintf(F, " none");
                        }
                        else {
                                if (am_flav & ia32_O) {
                                        fprintf(F, " O");
                                }
                                if (am_flav & ia32_B) {
                                        fprintf(F, " B");
                                }
                                if (am_flav & ia32_I) {
                                        fprintf(F, " I");
                                }
                                if (am_flav & ia32_S) {
                                        fprintf(F, " S");
                                }
                        }
                        fprintf(F, " (%d)\n", am_flav);

                        /* dump AM offset */
                        if(get_ia32_am_offs_int(n) != 0) {
                                fprintf(F, "AM offset = %d\n", get_ia32_am_offs_int(n));
                        }

                        /* dump AM symconst */
                        if(get_ia32_am_sc(n) != NULL) {
                                ir_entity *ent = get_ia32_am_sc(n);
                                ident *id = get_entity_ld_ident(ent);
                                fprintf(F, "AM symconst = %s\n", get_id_str(id));
                        }

                        /* dump AM scale */
                        fprintf(F, "AM scale = %d\n", get_ia32_am_scale(n));

                        /* dump pn code */
                        if(get_ia32_pncode(n) & ia32_pn_Cmp_Unsigned) {
                                fprintf(F, "pn_code = %d (%s, unsigned)\n", get_ia32_pncode(n),
                                        get_pnc_string(get_ia32_pncode(n) & ~ia32_pn_Cmp_Unsigned));
                        } else {
                                fprintf(F, "pn_code = %d (%s)\n", get_ia32_pncode(n),
                                        get_pnc_string(get_ia32_pncode(n)));
                        }

                        /* dump n_res */
                        fprintf(F, "n_res = %d\n", get_ia32_n_res(n));

                        /* dump use_frame */
                        fprintf(F, "use_frame = %d\n", is_ia32_use_frame(n));

                        /* commutative */
                        fprintf(F, "commutative = %d\n", is_ia32_commutative(n));

                        /* emit cl */
                        fprintf(F, "emit cl instead of ecx = %d\n", is_ia32_emit_cl(n));

                        /* got lea */
                        fprintf(F, "got loea = %d\n", is_ia32_got_lea(n));

                        /* need stackent */
                        fprintf(F, "need stackent = %d\n", is_ia32_need_stackent(n));

                        /* dump latency */
                        fprintf(F, "latency = %d\n", get_ia32_latency(n));

                        /* dump flags */
                        fprintf(F, "flags =");
                        flags = get_ia32_flags(n);
                        if (flags == arch_irn_flags_none) {
                                fprintf(F, " none");
                        }
                        else {
                                if (flags & arch_irn_flags_dont_spill) {
                                        fprintf(F, " unspillable");
                                }
                                if (flags & arch_irn_flags_rematerializable) {
                                        fprintf(F, " remat");
                                }
                                if (flags & arch_irn_flags_ignore) {
                                        fprintf(F, " ignore");
                                }
                                if (flags & arch_irn_flags_modify_sp) {
                                        fprintf(F, " modify_sp");
                                }
                        }
                        fprintf(F, " (%d)\n", flags);

                        /* dump frame entity */
                        fprintf(F, "frame entity = ");
                        if (get_ia32_frame_ent(n)) {
                                ir_fprintf(F, "%+F", get_ia32_frame_ent(n));
                        }
                        else {
                                fprintf(F, "n/a");
                        }
                        fprintf(F, "\n");

                        /* dump modes */
                        fprintf(F, "ls_mode = ");
                        if (get_ia32_ls_mode(n)) {
                                ir_fprintf(F, "%+F", get_ia32_ls_mode(n));
                        }
                        else {
                                fprintf(F, "n/a");
                        }
                        fprintf(F, "\n");

#ifndef NDEBUG
                        /* dump original ir node name */
                        fprintf(F, "orig node = ");
                        if (get_ia32_orig_node(n)) {
                                fprintf(F, "%s", get_ia32_orig_node(n));
                        }
                        else {
                                fprintf(F, "n/a");
                        }
                        fprintf(F, "\n");
#endif /* NDEBUG */

                        fprintf(F, "=== IA32 attr end ===\n");
                        /* end of: case dump_node_info_txt */
                        break;
        }

        return bad;
}



/***************************************************************************************************
 *        _   _                   _       __        _                    _   _               _
 *       | | | |                 | |     / /       | |                  | | | |             | |
 *   __ _| |_| |_ _ __   ___  ___| |_   / /_ _  ___| |_   _ __ ___   ___| |_| |__   ___   __| |___
 *  / _` | __| __| '__| / __|/ _ \ __| / / _` |/ _ \ __| | '_ ` _ \ / _ \ __| '_ \ / _ \ / _` / __|
 * | (_| | |_| |_| |    \__ \  __/ |_ / / (_| |  __/ |_  | | | | | |  __/ |_| | | | (_) | (_| \__ \
 *  \__,_|\__|\__|_|    |___/\___|\__/_/ \__, |\___|\__| |_| |_| |_|\___|\__|_| |_|\___/ \__,_|___/
 *                                        __/ |
 *                                       |___/
 ***************************************************************************************************/

/**
 * Wraps get_irn_generic_attr() as it takes no const ir_node, so we need to do a cast.
 * Firm was made by people hating const :-(
 */
ia32_attr_t *get_ia32_attr(const ir_node *node) {
        assert(is_ia32_irn(node) && "need ia32 node to get ia32 attributes");
        return (ia32_attr_t *)get_irn_generic_attr((ir_node *)node);
}

/**
 * Gets the type of an ia32 node.
 */
ia32_op_type_t get_ia32_op_type(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return attr->data.tp;
}

/**
 * Sets the type of an ia32 node.
 */
void set_ia32_op_type(ir_node *node, ia32_op_type_t tp) {
        ia32_attr_t *attr = get_ia32_attr(node);
        attr->data.tp     = tp;
}

/**
 * Gets the immediate op type of an ia32 node.
 */
ia32_immop_type_t get_ia32_immop_type(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return attr->data.imm_tp;
}

/**
 * Gets the supported address mode of an ia32 node
 */
ia32_am_type_t get_ia32_am_support(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return attr->data.am_support;
}

/**
 * Sets the supported address mode of an ia32 node
 */
void set_ia32_am_support(ir_node *node, ia32_am_type_t am_tp) {
        ia32_attr_t *attr     = get_ia32_attr(node);
        attr->data.am_support = am_tp;
}

/**
 * Gets the address mode flavour of an ia32 node
 */
ia32_am_flavour_t get_ia32_am_flavour(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return attr->data.am_flavour;
}

/**
 * Sets the address mode flavour of an ia32 node
 */
void set_ia32_am_flavour(ir_node *node, ia32_am_flavour_t am_flavour) {
        ia32_attr_t *attr     = get_ia32_attr(node);
        attr->data.am_flavour = am_flavour;
}

/**
 * Gets the address mode offset as int.
 */
int get_ia32_am_offs_int(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return attr->am_offs;
}

/**
 * Sets the address mode offset from an int.
 */
void set_ia32_am_offs_int(ir_node *node, int offset) {
        ia32_attr_t *attr = get_ia32_attr(node);
        attr->am_offs = offset;
}

void add_ia32_am_offs_int(ir_node *node, int offset) {
        ia32_attr_t *attr = get_ia32_attr(node);
        attr->am_offs += offset;
}

/**
 * Returns the symconst entity associated to address mode.
 */
ir_entity *get_ia32_am_sc(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return attr->am_sc;
}

/**
 * Sets the symconst entity associated to address mode.
 */
void set_ia32_am_sc(ir_node *node, ir_entity *entity) {
        ia32_attr_t *attr = get_ia32_attr(node);
        attr->am_sc       = entity;
}

/**
 * Sets the sign bit for address mode symconst.
 */
void set_ia32_am_sc_sign(ir_node *node) {
        ia32_attr_t *attr     = get_ia32_attr(node);
        attr->data.am_sc_sign = 1;
}

/**
 * Clears the sign bit for address mode symconst.
 */
void clear_ia32_am_sc_sign(ir_node *node) {
        ia32_attr_t *attr     = get_ia32_attr(node);
        attr->data.am_sc_sign = 0;
}

/**
 * Returns the sign bit for address mode symconst.
 */
int is_ia32_am_sc_sign(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return attr->data.am_sc_sign;
}

/**
 * Gets the addr mode const.
 */
int get_ia32_am_scale(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return attr->data.am_scale;
}

/**
 * Sets the index register scale for address mode.
 */
void set_ia32_am_scale(ir_node *node, int scale) {
        ia32_attr_t *attr   = get_ia32_attr(node);
        attr->data.am_scale = scale;
}

/**
 * Return the tarval of an immediate operation or NULL in case of SymConst
 */
tarval *get_ia32_Immop_tarval(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        assert(attr->data.imm_tp == ia32_ImmConst);
    return attr->cnst_val.tv;
}

/**
 * Sets the attributes of an immediate operation to the specified tarval
 */
void set_ia32_Immop_tarval(ir_node *node, tarval *tv) {
        ia32_attr_t *attr = get_ia32_attr(node);
        attr->data.imm_tp = ia32_ImmConst;
        attr->cnst_val.tv = tv;
}

void set_ia32_Immop_symconst(ir_node *node, ir_entity *entity) {
        ia32_attr_t *attr = get_ia32_attr(node);
        attr->data.imm_tp = ia32_ImmSymConst;
        attr->cnst_val.sc = entity;
}

ir_entity *get_ia32_Immop_symconst(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        assert(attr->data.imm_tp == ia32_ImmSymConst);
        return attr->cnst_val.sc;
}

/**
 * Sets the uses_frame flag.
 */
void set_ia32_use_frame(ir_node *node) {
        ia32_attr_t *attr    = get_ia32_attr(node);
        attr->data.use_frame = 1;
}

/**
 * Clears the uses_frame flag.
 */
void clear_ia32_use_frame(ir_node *node) {
        ia32_attr_t *attr    = get_ia32_attr(node);
        attr->data.use_frame = 0;
}

/**
 * Gets the uses_frame flag.
 */
int is_ia32_use_frame(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return attr->data.use_frame;
}

/**
 * Sets node to commutative.
 */
void set_ia32_commutative(ir_node *node) {
        ia32_attr_t *attr         = get_ia32_attr(node);
        attr->data.is_commutative = 1;
}

/**
 * Sets node to non-commutative.
 */
void clear_ia32_commutative(ir_node *node) {
        ia32_attr_t *attr         = get_ia32_attr(node);
        attr->data.is_commutative = 0;
}

/**
 * Checks if node is commutative.
 */
int is_ia32_commutative(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return attr->data.is_commutative;
}

/**
 * Sets node emit_cl.
 */
void set_ia32_emit_cl(ir_node *node) {
        ia32_attr_t *attr  = get_ia32_attr(node);
        attr->data.emit_cl = 1;
}

/**
 * Clears node emit_cl.
 */
void clear_ia32_emit_cl(ir_node *node) {
        ia32_attr_t *attr  = get_ia32_attr(node);
        attr->data.emit_cl = 0;
}

/**
 * Checks if node needs %cl.
 */
int is_ia32_emit_cl(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return attr->data.emit_cl;
}

/**
 * Sets node got_lea.
 */
void set_ia32_got_lea(ir_node *node) {
        ia32_attr_t *attr  = get_ia32_attr(node);
        attr->data.got_lea = 1;
}

/**
 * Clears node got_lea.
 */
void clear_ia32_got_lea(ir_node *node) {
        ia32_attr_t *attr  = get_ia32_attr(node);
        attr->data.got_lea = 0;
}

/**
 * Checks if node got lea.
 */
int is_ia32_got_lea(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return attr->data.got_lea;
}

void set_ia32_need_stackent(ir_node *node) {
        ia32_attr_t *attr     = get_ia32_attr(node);
        attr->data.need_stackent = 1;
}

void clear_ia32_need_stackent(ir_node *node) {
        ia32_attr_t *attr     = get_ia32_attr(node);
        attr->data.need_stackent = 0;
}

int is_ia32_need_stackent(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return attr->data.need_stackent;
}

/**
 * Gets the mode of the stored/loaded value (only set for Store/Load)
 */
ir_mode *get_ia32_ls_mode(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return attr->ls_mode;
}

/**
 * Sets the mode of the stored/loaded value (only set for Store/Load)
 */
void set_ia32_ls_mode(ir_node *node, ir_mode *mode) {
        ia32_attr_t *attr = get_ia32_attr(node);
        attr->ls_mode     = mode;
}

/**
 * Gets the frame entity assigned to this node.
 */
ir_entity *get_ia32_frame_ent(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return attr->frame_ent;
}

/**
 * Sets the frame entity for this node.
 */
void set_ia32_frame_ent(ir_node *node, ir_entity *ent) {
        ia32_attr_t *attr = get_ia32_attr(node);
        attr->frame_ent   = ent;
        if(ent != NULL)
                set_ia32_use_frame(node);
        else
                clear_ia32_use_frame(node);
}


/**
 * Gets the instruction latency.
 */
unsigned get_ia32_latency(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return attr->latency;
}

/**
* Sets the instruction latency.
*/
void set_ia32_latency(ir_node *node, unsigned latency) {
        ia32_attr_t *attr = get_ia32_attr(node);
        attr->latency     = latency;
}

/**
 * Returns the argument register requirements of an ia32 node.
 */
const arch_register_req_t **get_ia32_in_req_all(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return attr->in_req;
}

/**
 * Sets the argument register requirements of an ia32 node.
 */
void set_ia32_in_req_all(ir_node *node, const arch_register_req_t **reqs) {
        ia32_attr_t *attr = get_ia32_attr(node);
        attr->in_req      = reqs;
}

/**
 * Returns the result register requirements of an ia32 node.
 */
const arch_register_req_t **get_ia32_out_req_all(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return attr->out_req;
}

/**
 * Sets the result register requirements of an ia32 node.
 */
void set_ia32_out_req_all(ir_node *node, const arch_register_req_t **reqs) {
        ia32_attr_t *attr = get_ia32_attr(node);
        attr->out_req     = reqs;
}

/**
 * Returns the argument register requirement at position pos of an ia32 node.
 */
const arch_register_req_t *get_ia32_in_req(const ir_node *node, int pos) {
        ia32_attr_t *attr = get_ia32_attr(node);
        if(attr->in_req == NULL)
                return arch_no_register_req;

        return attr->in_req[pos];
}

/**
 * Returns the result register requirement at position pos of an ia32 node.
 */
const arch_register_req_t *get_ia32_out_req(const ir_node *node, int pos) {
        ia32_attr_t *attr = get_ia32_attr(node);
        if(attr->out_req == NULL)
                return arch_no_register_req;

        return attr->out_req[pos];
}

/**
 * Sets the OUT register requirements at position pos.
 */
void set_ia32_req_out(ir_node *node, const arch_register_req_t *req, int pos) {
        ia32_attr_t *attr  = get_ia32_attr(node);
        attr->out_req[pos] = req;
}

/**
 * Sets the IN register requirements at position pos.
 */
void set_ia32_req_in(ir_node *node, const arch_register_req_t *req, int pos) {
        ia32_attr_t *attr = get_ia32_attr(node);
        attr->in_req[pos] = req;
}

/**
 * Returns the register flag of an ia32 node.
 */
arch_irn_flags_t get_ia32_flags(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return attr->data.flags;
}

/**
 * Sets the register flag of an ia32 node.
 */
void set_ia32_flags(ir_node *node, arch_irn_flags_t flags) {
        ia32_attr_t *attr = get_ia32_attr(node);
        attr->data.flags  = flags;
}

/**
 * Returns the result register slots of an ia32 node.
 */
const arch_register_t **get_ia32_slots(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return attr->slots;
}

/**
 * Sets the number of results.
 */
void set_ia32_n_res(ir_node *node, int n_res) {
        ia32_attr_t *attr = get_ia32_attr(node);
        attr->data.n_res  = n_res;
}

/**
 * Returns the number of results.
 */
int get_ia32_n_res(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return attr->data.n_res;
}

/**
 * Returns the flavour of an ia32 node,
 */
ia32_op_flavour_t get_ia32_flavour(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return attr->data.op_flav;
}

/**
 * Sets the flavour of an ia32 node to flavour_Div/Mod/DivMod/Mul/Mulh.
 */
void set_ia32_flavour(ir_node *node, ia32_op_flavour_t op_flav) {
        ia32_attr_t *attr  = get_ia32_attr(node);
        attr->data.op_flav = op_flav;
}

/**
 * Returns the projnum code.
 */
pn_Cmp get_ia32_pncode(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return attr->pn_code;
}

/**
 * Sets the projnum code
 */
void set_ia32_pncode(ir_node *node, pn_Cmp code) {
        ia32_attr_t *attr = get_ia32_attr(node);
        attr->pn_code     = code;
}

/**
 * Sets the flags for the n'th out.
 */
void set_ia32_out_flags(ir_node *node, arch_irn_flags_t flags, int pos) {
        ia32_attr_t *attr = get_ia32_attr(node);
        assert(pos < (int) attr->data.n_res && "Invalid OUT position.");
        attr->out_flags[pos] = flags;
}

/**
 * Gets the flags for the n'th out.
 */
arch_irn_flags_t get_ia32_out_flags(const ir_node *node, int pos) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return pos < (int)attr->data.n_res ? attr->out_flags[pos] : arch_irn_flags_none;
}

/**
 * Get the list of available execution units.
 */
const be_execution_unit_t ***get_ia32_exec_units(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return attr->exec_units;
}

/**
 * Get the exception label attribute.
 */
unsigned get_ia32_exc_label(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return attr->data.except_label;
}

/**
 * Set the exception label attribute.
 */
void set_ia32_exc_label(ir_node *node, unsigned flag) {
        ia32_attr_t *attr = get_ia32_attr(node);
        attr->data.except_label = flag;
}

#ifndef NDEBUG

/**
 * Returns the name of the original ir node.
 */
const char *get_ia32_orig_node(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return attr->orig_node;
}

/**
 * Sets the name of the original ir node.
 */
void set_ia32_orig_node(ir_node *node, const char *name) {
        ia32_attr_t *attr = get_ia32_attr(node);
        attr->orig_node   = name;
}

#endif /* NDEBUG */

/******************************************************************************************************
 *                      _       _         _   _           __                  _   _
 *                     (_)     | |       | | | |         / _|                | | (_)
 *  ___ _ __   ___  ___ _  __ _| |   __ _| |_| |_ _ __  | |_ _   _ _ __   ___| |_ _  ___  _ __    ___
 * / __| '_ \ / _ \/ __| |/ _` | |  / _` | __| __| '__| |  _| | | | '_ \ / __| __| |/ _ \| '_ \  / __|
 * \__ \ |_) |  __/ (__| | (_| | | | (_| | |_| |_| |    | | | |_| | | | | (__| |_| | (_) | | | | \__ \
 * |___/ .__/ \___|\___|_|\__,_|_|  \__,_|\__|\__|_|    |_|  \__,_|_| |_|\___|\__|_|\___/|_| |_| |___/
 *     | |
 *     |_|
 ******************************************************************************************************/

/**
 * Copy the attributes from an ia32_Const to an Immop (Add_i, Sub_i, ...) node
 */
void copy_ia32_Immop_attr(ir_node *node, ir_node *from) {
        ia32_immop_type_t immop_type = get_ia32_immop_type(from);

        if(immop_type == ia32_ImmConst) {
                set_ia32_Immop_tarval(node, get_ia32_Immop_tarval(from));
        } else if(immop_type == ia32_ImmSymConst) {
                set_ia32_Immop_symconst(node, get_ia32_Immop_symconst(from));
        } else {
                ia32_attr_t *attr = get_ia32_attr(node);
                assert(immop_type == ia32_ImmNone);
                attr->data.imm_tp = ia32_ImmNone;
        }
}

/**
 * Copy the attributes from a Firm Const/SymConst to an ia32_Const
 */
void set_ia32_Const_attr(ir_node *ia32_cnst, ir_node *cnst) {
        assert(is_ia32_Cnst(ia32_cnst) && "Need ia32_Const to set Const attr");

        switch (get_irn_opcode(cnst)) {
                case iro_Const:
                        set_ia32_Const_tarval(ia32_cnst, get_Const_tarval(cnst));
                        break;
                case iro_SymConst:
                        assert(get_SymConst_kind(cnst) == symconst_addr_ent);
                        set_ia32_Immop_symconst(ia32_cnst, get_SymConst_entity(cnst));
                        break;
                case iro_Unknown:
                        assert(0 && "Unknown Const NYI");
                        break;
                default:
                        assert(0 && "Cannot create ia32_Const for this opcode");
        }
}

void set_ia32_Const_tarval(ir_node *ia32_cnst, tarval *tv) {
#if 0
        if(mode_is_reference(get_tarval_mode(tv))) {
                if(tarval_is_null(tv)) {
                        tv = get_tarval_null(mode_Iu);
                } else {
                        long val;
                        /* workaround... */
                        if(!tarval_is_long(tv))
                                panic("Can't convert reference tarval to mode_Iu at %+F", ia32_cnst);
                        val = get_tarval_long(tv);
                        tv = new_tarval_from_long(val, mode_Iu);
                }
        } else {
                tv = tarval_convert_to(tv, mode_Iu);
        }
#else
        tv = tarval_convert_to(tv, mode_Iu);
#endif

        assert(tv != get_tarval_bad() && tv != get_tarval_undefined()
                        && tv != NULL);
        set_ia32_Immop_tarval(ia32_cnst, tv);
}


/**
 * Sets the AddrMode(S|D) attribute
 */
void set_ia32_AddrMode(ir_node *node, char direction) {
        ia32_attr_t *attr = get_ia32_attr(node);

        switch (direction) {
                case 'D':
                        attr->data.tp = ia32_AddrModeD;
                        break;
                case 'S':
                        attr->data.tp = ia32_AddrModeS;
                        break;
                default:
                        assert(0 && "wrong AM type");
        }
}

/**
 * Returns whether or not the node is an immediate operation with Const.
 */
int is_ia32_ImmConst(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return (attr->data.imm_tp == ia32_ImmConst);
}

/**
 * Returns whether or not the node is an immediate operation with SymConst.
 */
int is_ia32_ImmSymConst(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return (attr->data.imm_tp == ia32_ImmSymConst);
}

/**
 * Returns whether or not the node is an AddrModeS node.
 */
int is_ia32_AddrModeS(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return (attr->data.tp == ia32_AddrModeS);
}

/**
 * Returns whether or not the node is an AddrModeD node.
 */
int is_ia32_AddrModeD(const ir_node *node) {
        ia32_attr_t *attr = get_ia32_attr(node);
        return (attr->data.tp == ia32_AddrModeD);
}

/**
 * Checks if node is a Load or xLoad/vfLoad.
 */
int is_ia32_Ld(const ir_node *node) {
        int op = get_ia32_irn_opcode(node);
        return op == iro_ia32_Load ||
               op == iro_ia32_xLoad ||
               op == iro_ia32_vfld ||
               op == iro_ia32_fld;
}

/**
 * Checks if node is a Store or xStore/vfStore.
 */
int is_ia32_St(const ir_node *node) {
        int op = get_ia32_irn_opcode(node);
        return op == iro_ia32_Store ||
               op == iro_ia32_Store8Bit ||
               op == iro_ia32_xStore ||
               op == iro_ia32_vfst ||
               op == iro_ia32_fst ||
               op == iro_ia32_fstp;
}

/**
 * Checks if node is a Const or xConst/vfConst.
 */
int is_ia32_Cnst(const ir_node *node) {
        int op = get_ia32_irn_opcode(node);
        return op == iro_ia32_Const || op == iro_ia32_xConst || op == iro_ia32_vfConst;
}

/**
 * Returns the name of the OUT register at position pos.
 */
const char *get_ia32_out_reg_name(const ir_node *node, int pos) {
        ia32_attr_t *attr = get_ia32_attr(node);

        assert(pos < (int) attr->data.n_res && "Invalid OUT position.");
        assert(attr->slots[pos]  && "No register assigned");

        return arch_register_get_name(attr->slots[pos]);
}

/**
 * Returns the index of the OUT register at position pos within its register class.
 */
int get_ia32_out_regnr(const ir_node *node, int pos) {
        ia32_attr_t *attr = get_ia32_attr(node);

        assert(pos < (int) attr->data.n_res && "Invalid OUT position.");
        assert(attr->slots[pos]  && "No register assigned");

        return arch_register_get_index(attr->slots[pos]);
}

/**
 * Returns the OUT register at position pos.
 */
const arch_register_t *get_ia32_out_reg(const ir_node *node, int pos) {
        ia32_attr_t *attr = get_ia32_attr(node);

        assert(pos < (int) attr->data.n_res && "Invalid OUT position.");
        assert(attr->slots[pos]  && "No register assigned");

        return attr->slots[pos];
}

/**
 * Initializes the nodes attributes.
 */
void init_ia32_attributes(ir_node *node, arch_irn_flags_t flags,
                          const arch_register_req_t **in_reqs,
                          const arch_register_req_t **out_reqs,
                          const be_execution_unit_t ***execution_units,
                          int n_res, unsigned latency)
{
        ia32_attr_t *attr = get_ia32_attr(node);

        set_ia32_flags(node, flags);
        set_ia32_in_req_all(node, in_reqs);
        set_ia32_out_req_all(node, out_reqs);
        set_ia32_latency(node, latency);
        set_ia32_n_res(node, n_res);

        attr->exec_units = execution_units;

        attr->out_flags = NEW_ARR_D(int, get_irg_obstack(get_irn_irg(node)), n_res);
        memset(attr->out_flags, 0, n_res * sizeof(attr->out_flags[0]));

        memset((void *)attr->slots, 0, n_res * sizeof(attr->slots[0]));
}

ir_node *get_ia32_result_proj(const ir_node *node)
{
        const ir_edge_t *edge;

        foreach_out_edge(node, edge) {
                ir_node *proj = get_edge_src_irn(edge);
                if(get_Proj_proj(proj) == 0) {
                        return proj;
                }
        }
        return NULL;
}

/***************************************************************************************
 *                  _                            _                   _
 *                 | |                          | |                 | |
 *  _ __   ___   __| | ___    ___ ___  _ __  ___| |_ _ __ _   _  ___| |_ ___  _ __ ___
 * | '_ \ / _ \ / _` |/ _ \  / __/ _ \| '_ \/ __| __| '__| | | |/ __| __/ _ \| '__/ __|
 * | | | | (_) | (_| |  __/ | (_| (_) | | | \__ \ |_| |  | |_| | (__| || (_) | |  \__ \
 * |_| |_|\___/ \__,_|\___|  \___\___/|_| |_|___/\__|_|   \__,_|\___|\__\___/|_|  |___/
 *
 ***************************************************************************************/

/* default compare operation to compare attributes */
int ia32_compare_attr(ia32_attr_t *a, ia32_attr_t *b) {
        if (a->data.tp != b->data.tp
                        || a->data.imm_tp != b->data.imm_tp)
                return 1;

        if (a->data.imm_tp == ia32_ImmConst
                        && a->cnst_val.tv != b->cnst_val.tv)
                return 1;

        if (a->data.imm_tp == ia32_ImmSymConst
                        && a->cnst_val.sc != b->cnst_val.sc)
                return 1;

        if (a->data.am_flavour != b->data.am_flavour
            || a->data.am_scale != b->data.am_scale
            || a->data.am_sc_sign != b->data.am_sc_sign
            || a->am_offs != b->am_offs
            || a->am_sc != b->am_sc
            || a->ls_mode != b->ls_mode)
                return 1;

        if (a->data.use_frame != b->data.use_frame
            || a->data.use_frame != b->data.use_frame
            || a->frame_ent != b->frame_ent)
                return 1;

        if(a->pn_code != b->pn_code)
                return 1;

        if (a->data.tp != b->data.tp
            || a->data.op_flav != b->data.op_flav)
                return 1;

        if (a->data.except_label != b->data.except_label)
                return 1;

        return 0;
}

/* copies the ia32 attributes */
static void ia32_copy_attr(const ir_node *old_node, ir_node *new_node) {
        ia32_attr_t *attr_old = get_ia32_attr(old_node);
        ia32_attr_t *attr_new = get_ia32_attr(new_node);

        /* copy the attributes */
        memcpy(attr_new, attr_old, get_op_attr_size(get_irn_op(old_node)));

        /* copy out flags */
        attr_new->out_flags =
                DUP_ARR_D(int, get_irg_obstack(get_irn_irg(new_node)), attr_old->out_flags);
}

/* Include the generated constructor functions */
#include "gen_ia32_new_nodes.c.inl"

/**
 * Registers the ia32_copy_attr function for all ia32 opcodes.
 */
void ia32_register_copy_attr_func(void) {
        int i;

        for (i = get_irp_n_opcodes() - 1; i >= 0; --i) {
                ir_op *op = get_irp_opcode(i);
                if (is_ia32_op(op))
                        op->ops.copy_attr = ia32_copy_attr;
        }
}