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

/*
 * 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.
 */

/**
 * @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 corresponding node constructors for the ia32 assembler irg.
 */
#include "config.h"

#include <stdlib.h>

#include "irargs_t.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 "irverify_t.h"
#include "irprintf.h"
#include "iredges.h"
#include "error.h"
#include "raw_bitset.h"
#include "xmalloc.h"

#include "../bearch.h"
#include "../beinfo.h"

#include "bearch_ia32_t.h"
#include "ia32_common_transform.h"
#include "ia32_nodes_attr.h"
#include "ia32_new_nodes.h"
#include "gen_ia32_regalloc_if.h"
#include "gen_ia32_machine.h"

/**
 * 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 void ia32_dump_node(FILE *F, ir_node *n, dump_reason_t reason)
{
        ir_mode *mode = NULL;

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

                        if (is_ia32_Immediate(n) || is_ia32_Const(n)) {
                                const ia32_immediate_attr_t *attr
                                        = get_ia32_immediate_attr_const(n);

                                fputc(' ', F);
                                if (attr->symconst) {
                                        if (attr->sc_sign) {
                                                fputc('-', F);
                                        }
                                        fputs(get_entity_name(attr->symconst), F);
                                }
                                if (attr->offset != 0 || attr->symconst == NULL) {
                                        if (attr->offset > 0 && attr->symconst != NULL) {
                                                fputc('+', F);
                                        }
                                        fprintf(F, "%ld", attr->offset);
                                        if (attr->no_pic_adjust) {
                                                fputs("(no_pic_adjust)", F);
                                        }
                                }
                        }
                        else {
                                const ia32_attr_t *attr = get_ia32_attr_const(n);

                                if (attr->am_sc != NULL || attr->am_offs != 0)
                                        fputs(" [", F);

                                if (attr->am_sc != NULL) {
                                        if (attr->data.am_sc_sign) {
                                                fputc('-', F);
                                        }
                                        fputs(get_entity_name(attr->am_sc), F);
                                        if (attr->data.am_sc_no_pic_adjust) {
                                                fputs("(no_pic_adjust)", F);
                                        }
                                }
                                if (attr->am_offs != 0) {
                                        if (attr->am_offs > 0 && attr->am_sc != NULL) {
                                                fputc('+', F);
                                        }
                                        fprintf(F, "%d", attr->am_offs);
                                }

                                if (attr->am_sc != NULL || attr->am_offs != 0)
                                        fputc(']', F);
                        }
                        break;

                case dump_node_mode_txt:
                        mode = get_ia32_ls_mode(n);
                        if (mode != NULL)
                                fprintf(F, "[%s]", get_mode_name(mode));
                        break;

                case dump_node_nodeattr_txt:
                        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:
                        arch_dump_reqs_and_registers(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 supported am */
                        fprintf(F, "AM support = ");
                        switch (get_ia32_am_support(n)) {
                                case ia32_am_none:   fputs("none\n",            F); break;
                                case ia32_am_unary:  fputs("source (unary)\n",  F); break;
                                case ia32_am_binary: fputs("source (binary)\n", F); break;

                                default:
                                        fprintf(F, "unknown (%d)\n", get_ia32_am_support(n));
                                        break;
                        }

                        /* 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 = %u\n", get_ia32_am_scale(n));

                        /* dump pn code */
                        if (is_ia32_SwitchJmp(n)) {
                                fprintf(F, "pn_code = %ld\n", get_ia32_condcode(n));
                        } else if (is_ia32_CMovcc(n) || is_ia32_Setcc(n) || is_ia32_Jcc(n)) {
                                ia32_attr_t *attr = get_ia32_attr(n);
                                long pnc = get_ia32_condcode(n);
                                fprintf(F, "pn_code = 0x%X (%s)\n", (unsigned) pnc,
                                        get_pnc_string(pnc & pn_Cmp_True));
                                fprintf(F, "ins_permuted = %u \n", attr->data.ins_permuted);
                                fprintf(F, "cmp_unsigned = %u \n", attr->data.cmp_unsigned);
                        }
                        else if (is_ia32_CopyB(n) || is_ia32_CopyB_i(n)) {
                                fprintf(F, "size = %u\n", get_ia32_copyb_size(n));
                        }

                        fprintf(F, "use_frame = %d\n",     is_ia32_use_frame(n));
                        fprintf(F, "commutative = %d\n",   is_ia32_commutative(n));
                        fprintf(F, "need stackent = %d\n", is_ia32_need_stackent(n));
                        fprintf(F, "is reload = %d\n",     is_ia32_is_reload(n));
                        fprintf(F, "latency = %u\n",       get_ia32_latency(n));

                        /* 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 */

                        break;
        }
}



ia32_attr_t *get_ia32_attr(ir_node *node)
{
        assert(is_ia32_irn(node) && "need ia32 node to get ia32 attributes");
        return (ia32_attr_t *)get_irn_generic_attr(node);
}

const ia32_attr_t *get_ia32_attr_const(const ir_node *node)
{
        assert(is_ia32_irn(node) && "need ia32 node to get ia32 attributes");
        return (const ia32_attr_t*) get_irn_generic_attr_const(node);
}

ia32_x87_attr_t *get_ia32_x87_attr(ir_node *node)
{
        ia32_attr_t     *attr     = get_ia32_attr(node);
        ia32_x87_attr_t *x87_attr = CAST_IA32_ATTR(ia32_x87_attr_t, attr);
        return x87_attr;
}

const ia32_x87_attr_t *get_ia32_x87_attr_const(const ir_node *node)
{
        const ia32_attr_t     *attr     = get_ia32_attr_const(node);
        const ia32_x87_attr_t *x87_attr = CONST_CAST_IA32_ATTR(ia32_x87_attr_t, attr);
        return x87_attr;
}

const ia32_asm_attr_t *get_ia32_asm_attr_const(const ir_node *node)
{
        const ia32_attr_t     *attr     = get_ia32_attr_const(node);
        const ia32_asm_attr_t *asm_attr = CONST_CAST_IA32_ATTR(ia32_asm_attr_t, attr);

        return asm_attr;
}

ia32_immediate_attr_t *get_ia32_immediate_attr(ir_node *node)
{
        ia32_attr_t           *attr      = get_ia32_attr(node);
        ia32_immediate_attr_t *imm_attr  = CAST_IA32_ATTR(ia32_immediate_attr_t, attr);

        return imm_attr;
}

const ia32_immediate_attr_t *get_ia32_immediate_attr_const(const ir_node *node)
{
        const ia32_attr_t           *attr     = get_ia32_attr_const(node);
        const ia32_immediate_attr_t *imm_attr = CONST_CAST_IA32_ATTR(ia32_immediate_attr_t, attr);

        return imm_attr;
}

ia32_condcode_attr_t *get_ia32_condcode_attr(ir_node *node)
{
        ia32_attr_t          *attr    = get_ia32_attr(node);
        ia32_condcode_attr_t *cc_attr = CAST_IA32_ATTR(ia32_condcode_attr_t, attr);

        return cc_attr;
}

const ia32_condcode_attr_t *get_ia32_condcode_attr_const(const ir_node *node)
{
        const ia32_attr_t          *attr    = get_ia32_attr_const(node);
        const ia32_condcode_attr_t *cc_attr = CONST_CAST_IA32_ATTR(ia32_condcode_attr_t, attr);

        return cc_attr;
}

ia32_call_attr_t *get_ia32_call_attr(ir_node *node)
{
        ia32_attr_t      *attr      = get_ia32_attr(node);
        ia32_call_attr_t *call_attr = CAST_IA32_ATTR(ia32_call_attr_t, attr);

        return call_attr;
}

const ia32_call_attr_t *get_ia32_call_attr_const(const ir_node *node)
{
        const ia32_attr_t      *attr      = get_ia32_attr_const(node);
        const ia32_call_attr_t *call_attr = CONST_CAST_IA32_ATTR(ia32_call_attr_t, attr);

        return call_attr;
}

ia32_copyb_attr_t *get_ia32_copyb_attr(ir_node *node)
{
        ia32_attr_t       *attr       = get_ia32_attr(node);
        ia32_copyb_attr_t *copyb_attr = CAST_IA32_ATTR(ia32_copyb_attr_t, attr);

        return copyb_attr;
}

const ia32_copyb_attr_t *get_ia32_copyb_attr_const(const ir_node *node)
{
        const ia32_attr_t       *attr       = get_ia32_attr_const(node);
        const ia32_copyb_attr_t *copyb_attr = CONST_CAST_IA32_ATTR(ia32_copyb_attr_t, attr);

        return copyb_attr;
}

ia32_climbframe_attr_t *get_ia32_climbframe_attr(ir_node *node)
{
        ia32_attr_t            *attr            = get_ia32_attr(node);
        ia32_climbframe_attr_t *climbframe_attr = CAST_IA32_ATTR(ia32_climbframe_attr_t, attr);

        return climbframe_attr;
}

const ia32_climbframe_attr_t *get_ia32_climbframe_attr_const(const ir_node *node)
{
        const ia32_attr_t            *attr            = get_ia32_attr_const(node);
        const ia32_climbframe_attr_t *climbframe_attr = CONST_CAST_IA32_ATTR(ia32_climbframe_attr_t, attr);

        return climbframe_attr;
}

/**
 * Gets the type of an ia32 node.
 */
ia32_op_type_t get_ia32_op_type(const ir_node *node)
{
        const ia32_attr_t *attr = get_ia32_attr_const(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;
}

ia32_am_type_t get_ia32_am_support(const ir_node *node)
{
        const ia32_attr_t *attr = get_ia32_attr_const(node);
        return attr->data.am_arity;
}

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

/**
 * Gets the address mode offset as int.
 */
int get_ia32_am_offs_int(const ir_node *node)
{
        const ia32_attr_t *attr = get_ia32_attr_const(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)
{
        const ia32_attr_t *attr = get_ia32_attr_const(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)
{
        const ia32_attr_t *attr = get_ia32_attr_const(node);
        return attr->data.am_sc_sign;
}

/**
 * Gets the addr mode const.
 */
unsigned get_ia32_am_scale(const ir_node *node)
{
        const ia32_attr_t *attr = get_ia32_attr_const(node);
        return attr->data.am_scale;
}

/**
 * Sets the index register scale for address mode.
 */
void set_ia32_am_scale(ir_node *node, unsigned scale)
{
        ia32_attr_t *attr = get_ia32_attr(node);
        assert(scale <= 3 && "AM scale out of range [0 ... 3]");
        attr->data.am_scale = scale;
}

void ia32_copy_am_attrs(ir_node *to, const ir_node *from)
{
        set_ia32_ls_mode(to, get_ia32_ls_mode(from));
        set_ia32_am_scale(to, get_ia32_am_scale(from));
        set_ia32_am_sc(to, get_ia32_am_sc(from));
        if (is_ia32_am_sc_sign(from))
                set_ia32_am_sc_sign(to);
        add_ia32_am_offs_int(to, get_ia32_am_offs_int(from));
        set_ia32_frame_ent(to, get_ia32_frame_ent(from));
        if (is_ia32_use_frame(from))
                set_ia32_use_frame(to);
}

/**
 * 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)
{
        const ia32_attr_t *attr = get_ia32_attr_const(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)
{
        const ia32_attr_t *attr = get_ia32_attr_const(node);
        return attr->data.is_commutative;
}

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)
{
        const ia32_attr_t *attr = get_ia32_attr_const(node);
        return attr->data.need_stackent;
}

void set_ia32_is_reload(ir_node *node)
{
        ia32_attr_t *attr = get_ia32_attr(node);
        attr->data.is_reload = 1;
}

int is_ia32_is_reload(const ir_node *node)
{
        const ia32_attr_t *attr = get_ia32_attr_const(node);
        return attr->data.is_reload;
}

void set_ia32_is_spill(ir_node *node)
{
        ia32_attr_t *attr = get_ia32_attr(node);
        attr->data.is_spill = 1;
}

int is_ia32_is_spill(const ir_node *node)
{
        const ia32_attr_t *attr = get_ia32_attr_const(node);
        return attr->data.is_spill;
}

void set_ia32_is_remat(ir_node *node)
{
        ia32_attr_t *attr = get_ia32_attr(node);
        attr->data.is_remat = 1;
}

int is_ia32_is_remat(const ir_node *node)
{
        const ia32_attr_t *attr = get_ia32_attr_const(node);
        return attr->data.is_remat;
}

/**
 * Gets the mode of the stored/loaded value (only set for Store/Load)
 */
ir_mode *get_ia32_ls_mode(const ir_node *node)
{
        const ia32_attr_t *attr = get_ia32_attr_const(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)
{
        const ia32_attr_t *attr = get_ia32_attr_const(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)
{
        const ir_op *op               = get_irn_op(node);
        const ia32_op_attr_t *op_attr = (ia32_op_attr_t*) get_op_attr(op);
        return op_attr->latency;
}

/**
 * Returns the argument register requirements of an ia32 node.
 */
const arch_register_req_t **get_ia32_in_req_all(const ir_node *node)
{
        const ia32_attr_t *attr = get_ia32_attr_const(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 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)
{
        const ia32_attr_t *attr = get_ia32_attr_const(node);
        return attr->in_req[pos];
}

/**
 * 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 condition code of a node.
 */
long get_ia32_condcode(const ir_node *node)
{
        const ia32_condcode_attr_t *attr = get_ia32_condcode_attr_const(node);
        return attr->pn_code;
}

/**
 * Sets the condition code of a node
 */
void set_ia32_condcode(ir_node *node, long code)
{
        ia32_condcode_attr_t *attr = get_ia32_condcode_attr(node);
        attr->pn_code = code;
}

/**
 * Returns the condition code of a node.
 */
unsigned get_ia32_copyb_size(const ir_node *node)
{
        const ia32_copyb_attr_t *attr = get_ia32_copyb_attr_const(node);
        return attr->size;
}

/**
 * Get the list of available execution units.
 */
const be_execution_unit_t ***get_ia32_exec_units(const ir_node *node)
{
        const ia32_attr_t *attr = get_ia32_attr_const(node);
        return attr->exec_units;
}

/**
 * Get the exception label attribute.
 */
unsigned get_ia32_exc_label(const ir_node *node)
{
        const ia32_attr_t *attr = get_ia32_attr_const(node);
        return attr->data.has_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.has_except_label = flag;
}

/**
 * Return the exception label id.
 */
ir_label_t get_ia32_exc_label_id(const ir_node *node)
{
        const ia32_attr_t *attr = get_ia32_attr_const(node);

        assert(attr->data.has_except_label);
        return attr->exc_label;
}

/**
 * Assign the exception label id.
 */
void set_ia32_exc_label_id(ir_node *node, ir_label_t id)
{
        ia32_attr_t *attr = get_ia32_attr(node);

        assert(attr->data.has_except_label);
        attr->exc_label = id;
}

#ifndef NDEBUG

/**
 * Returns the name of the original ir node.
 */
const char *get_ia32_orig_node(const ir_node *node)
{
        const ia32_attr_t *attr = get_ia32_attr_const(node);
        return attr->orig_node;
}

static const char *ia32_get_old_node_name(const ir_node *irn)
{
        struct obstack *obst = env_cg->isa->name_obst;

        lc_eoprintf(firm_get_arg_env(), obst, "%+F", irn);
        obstack_1grow(obst, 0);
        return obstack_finish(obst);
}

/**
 * Sets the name of the original ir node.
 */
void set_ia32_orig_node(ir_node *node, const ir_node *old)
{
        const char  *name = ia32_get_old_node_name(old);
        ia32_attr_t *attr = get_ia32_attr(node);
        attr->orig_node   = name;
}

#endif /* NDEBUG */


/**
 * Returns whether or not the node is an AddrModeS node.
 */
int is_ia32_AddrModeS(const ir_node *node)
{
        const ia32_attr_t *attr = get_ia32_attr_const(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)
{
        const ia32_attr_t *attr = get_ia32_attr_const(node);
        return (attr->data.tp == ia32_AddrModeD);
}

void ia32_swap_left_right(ir_node *node)
{
        ia32_attr_t *attr  = get_ia32_attr(node);
        ir_node     *left  = get_irn_n(node, n_ia32_binary_left);
        ir_node     *right = get_irn_n(node, n_ia32_binary_right);

        assert(is_ia32_commutative(node));
        attr->data.ins_permuted = !attr->data.ins_permuted;
        set_irn_n(node, n_ia32_binary_left,  right);
        set_irn_n(node, n_ia32_binary_right, left);
}

/**
 * Initializes the nodes attributes.
 */
void init_ia32_attributes(ir_node *node, arch_irn_flags_t flags,
                          const arch_register_req_t **in_reqs,
                          const be_execution_unit_t ***execution_units,
                          int n_res)
{
        ir_graph        *irg  = get_irn_irg(node);
        struct obstack  *obst = get_irg_obstack(irg);
        ia32_attr_t     *attr = get_ia32_attr(node);
        backend_info_t  *info;

        arch_irn_set_flags(node, flags);
        set_ia32_in_req_all(node, in_reqs);

        attr->exec_units  = execution_units;
#ifndef NDEBUG
        attr->attr_type  |= IA32_ATTR_ia32_attr_t;
#endif

        info            = be_get_info(node);
        info->out_infos = NEW_ARR_D(reg_out_info_t, obst, n_res);
        memset(info->out_infos, 0, n_res * sizeof(info->out_infos[0]));
}

void init_ia32_x87_attributes(ir_node *res)
{
#ifndef NDEBUG
        ia32_attr_t *attr  = get_ia32_attr(res);
        attr->attr_type   |= IA32_ATTR_ia32_x87_attr_t;
#else
        (void) res;
#endif
        ia32_current_cg->do_x87_sim = 1;
}

void init_ia32_asm_attributes(ir_node *res)
{
#ifndef NDEBUG
        ia32_attr_t *attr  = get_ia32_attr(res);
        attr->attr_type   |= IA32_ATTR_ia32_asm_attr_t;
#else
        (void) res;
#endif
}

void init_ia32_immediate_attributes(ir_node *res, ir_entity *symconst,
                                    int symconst_sign, int no_pic_adjust,
                                    long offset)
{
        ia32_immediate_attr_t *attr = get_irn_generic_attr(res);

#ifndef NDEBUG
        attr->attr.attr_type  |= IA32_ATTR_ia32_immediate_attr_t;
#endif
        attr->symconst      = symconst;
        attr->sc_sign       = symconst_sign;
        attr->no_pic_adjust = no_pic_adjust;
        attr->offset        = offset;
}

void init_ia32_call_attributes(ir_node* res, unsigned pop, ir_type* call_tp)
{
        ia32_call_attr_t *attr = get_irn_generic_attr(res);

#ifndef NDEBUG
        attr->attr.attr_type  |= IA32_ATTR_ia32_call_attr_t;
#endif
        attr->pop     = pop;
        attr->call_tp = call_tp;
}

void init_ia32_copyb_attributes(ir_node *res, unsigned size)
{
        ia32_copyb_attr_t *attr = get_irn_generic_attr(res);

#ifndef NDEBUG
        attr->attr.attr_type  |= IA32_ATTR_ia32_copyb_attr_t;
#endif
        attr->size = size;
}

void init_ia32_condcode_attributes(ir_node *res, long pnc)
{
        ia32_condcode_attr_t *attr = get_irn_generic_attr(res);

#ifndef NDEBUG
        attr->attr.attr_type  |= IA32_ATTR_ia32_condcode_attr_t;
#endif
        attr->pn_code = pnc;
}

void init_ia32_climbframe_attributes(ir_node *res, unsigned count)
{
        ia32_climbframe_attr_t *attr = get_irn_generic_attr(res);

#ifndef NDEBUG
        attr->attr.attr_type  |= IA32_ATTR_ia32_climbframe_attr_t;
#endif
        attr->count = count;
}


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

        if (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->data.am_sc_no_pic_adjust != b->data.am_sc_no_pic_adjust
            || a->ls_mode != b->ls_mode)
                return 1;

        /* nodes with not yet assigned entities shouldn't be CSEd (important for
         * unsigned int -> double conversions */
        if (a->data.use_frame && a->frame_ent == NULL)
                return 1;
        if (b->data.use_frame && b->frame_ent == NULL)
                return 1;

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

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

        if (a->data.ins_permuted != b->data.ins_permuted
                        || a->data.cmp_unsigned != b->data.cmp_unsigned)
                return 1;

        return 0;
}

/** Compare nodes attributes for all "normal" nodes. */
static int ia32_compare_nodes_attr(ir_node *a, ir_node *b)
{
        const ia32_attr_t* attr_a = get_ia32_attr_const(a);
        const ia32_attr_t* attr_b = get_ia32_attr_const(b);

        return ia32_compare_attr(attr_a, attr_b);
}

/** Compare node attributes for nodes with condition code. */
static int ia32_compare_condcode_attr(ir_node *a, ir_node *b)
{
        const ia32_condcode_attr_t *attr_a;
        const ia32_condcode_attr_t *attr_b;

        if (ia32_compare_nodes_attr(a, b))
                return 1;

        attr_a = get_ia32_condcode_attr_const(a);
        attr_b = get_ia32_condcode_attr_const(b);

        if (attr_a->pn_code != attr_b->pn_code)
                return 1;

        return 0;
}

/** Compare node attributes for call nodes. */
static int ia32_compare_call_attr(ir_node *a, ir_node *b)
{
        const ia32_call_attr_t *attr_a;
        const ia32_call_attr_t *attr_b;

        if (ia32_compare_nodes_attr(a, b))
                return 1;

        attr_a = get_ia32_call_attr_const(a);
        attr_b = get_ia32_call_attr_const(b);

        if (attr_a->pop != attr_b->pop)
                return 1;

        if (attr_a->call_tp != attr_b->call_tp)
                return 1;

        return 0;
}

/** Compare node attributes for CopyB nodes. */
static int ia32_compare_copyb_attr(ir_node *a, ir_node *b)
{
        const ia32_copyb_attr_t *attr_a;
        const ia32_copyb_attr_t *attr_b;

        if (ia32_compare_nodes_attr(a, b))
                return 1;

        attr_a = get_ia32_copyb_attr_const(a);
        attr_b = get_ia32_copyb_attr_const(b);

        if (attr_a->size != attr_b->size)
                return 1;

        return 0;
}


/** Compare ASM node attributes. */
static int ia32_compare_asm_attr(ir_node *a, ir_node *b)
{
        const ia32_asm_attr_t *attr_a;
        const ia32_asm_attr_t *attr_b;

        if (ia32_compare_nodes_attr(a, b))
                return 1;

        attr_a = get_ia32_asm_attr_const(a);
        attr_b = get_ia32_asm_attr_const(b);

        if (attr_a->asm_text != attr_b->asm_text)
                return 1;

        return 0;
}

/**
 * Hash function for Immediates
 */
static unsigned ia32_hash_Immediate(const ir_node *irn)
{
        const ia32_immediate_attr_t *a = get_ia32_immediate_attr_const(irn);

        return HASH_PTR(a->symconst) + (a->sc_sign << 16) + a->offset;
}

/** Compare node attributes for Immediates. */
static int ia32_compare_immediate_attr(ir_node *a, ir_node *b)
{
        const ia32_immediate_attr_t *attr_a = get_ia32_immediate_attr_const(a);
        const ia32_immediate_attr_t *attr_b = get_ia32_immediate_attr_const(b);

        if (attr_a->symconst != attr_b->symconst
                || attr_a->sc_sign != attr_b->sc_sign
                || attr_a->no_pic_adjust != attr_b->no_pic_adjust
                || attr_a->offset != attr_b->offset) {
                return 1;
        }

        return 0;
}

/** Compare node attributes for x87 nodes. */
static int ia32_compare_x87_attr(ir_node *a, ir_node *b)
{
        return ia32_compare_nodes_attr(a, b);
}

/** Compare node attributes for ClimbFrame nodes. */
static int ia32_compare_climbframe_attr(ir_node *a, ir_node *b)
{
        const ia32_climbframe_attr_t *attr_a;
        const ia32_climbframe_attr_t *attr_b;

        if (ia32_compare_nodes_attr(a, b))
                return 1;

        attr_a = get_ia32_climbframe_attr_const(a);
        attr_b = get_ia32_climbframe_attr_const(b);

        if (attr_a->count != attr_b->count)
                return 1;

        return 0;
}

/* copies the ia32 attributes */
static void ia32_copy_attr(ir_graph *irg, const ir_node *old_node,
                           ir_node *new_node)
{
        struct obstack    *obst     = get_irg_obstack(irg);
        const ia32_attr_t *attr_old = get_ia32_attr_const(old_node);
        ia32_attr_t       *attr_new = get_ia32_attr(new_node);
        backend_info_t    *old_info = be_get_info(old_node);
        backend_info_t    *new_info = be_get_info(new_node);

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

        /* copy out flags */
        new_info->out_infos =
                DUP_ARR_D(reg_out_info_t, obst, old_info->out_infos);
}

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