irnode.h 18.7 KB
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/* Copyright (C) 1998 - 2000 by Universitaet Karlsruhe
** All rights reserved.
**
** Authors: Martin Trapp, Christian Schaefer
**
** declarations of an ir node
*/

# ifndef _IRNODE_H_
# define _IRNODE_H_

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# include "irgraph.h"
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# include "entity.h"
# include "common.h"
# include "irop.h"
# include "irmode.h"
# include "tv.h"
# include "type.h"

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/* The typedefiniton of ir_node is also in irgraph.h to resolve
   recursion between irnode.h and irgraph.h */
#ifndef _IR_NODE_TYPEDEF_
#define _IR_NODE_TYPEDEF_
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/****s* irnode/irnode
 *
 * NAME ir_node - a datatype representing a Firm node
 *
 * NOTE Not properly documented ;-)
 *
 * ATTRIBUTES
 *  The common fields are:
 *
 *  firm_kind    A firm_kind tag containing k_type.  This is useful
 *               for dynamically checking whether a node is a ir_node.
 *  arity        The number of predecessors in the Firm graph.
 *  in           A list with the predecessors in the Firm graph.  There are
 *               routines to access individual elements and to obtain the
 *               array.  The method returning the array should not be used.
 *  mode         The mode of the node.  There are routines to get the mode but
 *               also to access the mode's fields directly.
 *  opcode       The opcode of the node.  There are routines to get the opcode but
 *               also to access the opcode's fields directly.
 *  node_nr      A unique number for the node.  Available only if debugging is
 *               turned on.
 * SOURCE
 */
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typedef struct ir_node ir_node;
#endif

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/** Manipulate the fields of ir_node.  With these access routines
    you can work on the graph without considering the different types
    of nodes, it's just a big graph. **/
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/* returns the number of predecessors without the block predecessor: */
int                  get_irn_arity         (ir_node *node);
/* returns the array with the ins: */
inline ir_node     **get_irn_in            (ir_node *node);
/* to iterate through the predecessors without touching the array. No
   order of predecessors guaranteed.
   To iterate over the operands iterate from 0 to i < get_irn_arity(),
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   to iterate including the Block predecessor iterate from i = -1 to
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   i < get_irn_arity. */
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/* Access predecessor n */
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inline ir_node      *get_irn_n             (ir_node *node, int n);
inline void          set_irn_n             (ir_node *node, int n, ir_node *in);
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/* Get the mode struct. */
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inline ir_mode      *get_irn_mode          (ir_node *node);
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/* Get the mode-enum modecode */
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inline modecode      get_irn_modecode      (ir_node *node);
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/* Get the ident for a string representation of the mode */
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inline ident        *get_irn_modeident     (ir_node *node);
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/* Access the opcode struct of the node */
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inline ir_op        *get_irn_op            (ir_node *node);
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inline void          set_irn_op            (ir_node *node, ir_op *op);
/* Get the opcode-enum of the node */
inline opcode        get_irn_opcode        (ir_node *node);
/* Get the ident for a string representation of the opcode */
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inline const char   *get_irn_opname        (ir_node *node);
inline ident        *get_irn_opident       (ir_node *node);
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inline void          set_irn_visited (ir_node *node, unsigned long visited);
inline unsigned long get_irn_visited (ir_node *node);
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inline void          set_irn_link          (ir_node *node, ir_node *link);
inline ir_node      *get_irn_link          (ir_node *node);
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#ifdef DEBUG_libfirm
/* Outputs a unique number for this node */
inline long get_irn_node_nr(ir_node *node);
#endif
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/*****/

/* irnode constructor                                             */
/* Create a new irnode in irg, with an op, mode, arity and        */
/* some incoming irnodes.                                         */
/* If arity is negative, a node with a dynamic array is created.  */

inline ir_node *
new_ir_node (ir_graph *irg,
	     ir_node *block,
	     ir_op *op,
	     ir_mode *mode,
	     int arity,
	     ir_node **in);
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/****s* irnode/other
 *
 * NAME access functions for node fields.
 *
 * NOTE Not properly documented ;-)
 *
 * SOURCE
 */
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/* this works for all except Block */
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inline ir_node  *get_nodes_Block (ir_node *node);
inline void      set_nodes_Block (ir_node *node, ir_node *block);
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/* Projection numbers for result of Start node: use for Proj nodes! */
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typedef enum {
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  pns_initial_exec,     /* Projection on an executable, the initial control
			   flow. */
  pns_global_store,     /* Projection on the global store */
  pns_frame_base,       /* Projection on the frame base */
  pns_globals,          /* Projection on the pointer to the data segment
			   containing _all_ global entities. */
  pns_args              /* Projection on all arguments */
} pns_number;

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inline ir_node **get_Block_cfgpred_arr (ir_node *node);
int              get_Block_n_cfgpreds (ir_node *node);
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/* inline void    set_Block_n_cfgpreds (ir_node *node, int n_preds); */
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inline ir_node  *get_Block_cfgpred (ir_node *node, int pos);
inline void      set_Block_cfgpred (ir_node *node, int pos, ir_node *pred);
inline bool      get_Block_matured (ir_node *node);
inline void      set_Block_matured (ir_node *node, bool matured);
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inline unsigned long get_Block_block_visited (ir_node *node);
inline void      set_Block_block_visited (ir_node *node, unsigned long visit);
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inline ir_node  *get_Block_graph_arr (ir_node *node, int pos);
inline void      set_Block_graph_arr (ir_node *node, int pos, ir_node *value);
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inline ir_node  *get_Cond_selector (ir_node *node);
inline void      set_Cond_selector (ir_node *node, ir_node *selector);
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inline ir_node  *get_Return_mem (ir_node *node);
inline void      set_Return_mem (ir_node *node, ir_node *mem);
inline ir_node **get_Return_res_arr (ir_node *node);
inline int       get_Return_n_res (ir_node *node);
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/*inline void     set_Return_n_res (ir_node *node, int results); */
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inline ir_node  *get_Return_res (ir_node *node, int pos);
inline void      set_Return_res (ir_node *node, int pos, ir_node *res);
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inline ir_node *get_Raise_mem (ir_node *node);
inline void     set_Raise_mem (ir_node *node, ir_node *mem);
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inline ir_node *get_Raise_exo_ptr (ir_node *node);  /* PoinTeR to EXception Object */
inline void     set_Raise_exo_ptr (ir_node *node, ir_node *exoptr);
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inline tarval  *get_Const_tarval (ir_node *node);
inline void     set_Const_tarval (ir_node *node, tarval *con);

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/*   This enum names the three different kinds of symbolic Constants
     represented by SymConst.  The content of the attribute type_or_id
     depends on this tag.  Use the proper access routine after testing
     this flag. */
typedef enum {
  type_tag,          /* The SymConst is a type tag for the given type.
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			Type_or_id_p is type *. */
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  size,              /* The SymConst is the size of the given type.
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			Type_or_id_p is type *. */
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  linkage_ptr_info   /* The SymConst is a symbolic pointer to be filled in
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			by the linker. Type_or_id_p is ident *. */
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} symconst_kind;
typedef union type_or_id * type_or_id_p;
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inline symconst_kind get_SymConst_kind (ir_node *node);
inline void          set_SymConst_kind (ir_node *node, symconst_kind num);
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/* Only to access SymConst of kind type_tag or size.  Else assertion: */
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inline type    *get_SymConst_type (ir_node *node);
inline void     set_SymConst_type (ir_node *node, type *type);
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/* Only to access SymConst of kind linkage_ptr_info.  Else assertion: */
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inline ident   *get_SymConst_ptrinfo (ir_node *node);
inline void     set_SymConst_ptrinfo (ir_node *node, ident *ptrinfo);
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/* Sets both: type and ptrinfo.  Needed to treat the node independent of
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   its semantics.  Does a memcpy for the memory tori points to. */
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inline type_or_id_p get_SymConst_type_or_id (ir_node *node);
inline void set_SymConst_type_or_id (ir_node *node, type_or_id_p tori);
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inline ir_node *get_Sel_mem (ir_node *node);
inline void     set_Sel_mem (ir_node *node, ir_node *mem);
inline ir_node *get_Sel_ptr (ir_node *node);  /* ptr to the object to select from */
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inline void     set_Sel_ptr (ir_node *node, ir_node *ptr);
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inline ir_node **get_Sel_index_arr (ir_node *node);
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inline int      get_Sel_n_index (ir_node *node);
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/*inline void     set_Sel_n_index (ir_node *node, int n_index); */
inline ir_node *get_Sel_index (ir_node *node, int pos);
inline void     set_Sel_index (ir_node *node, int pos, ir_node *index);
inline entity  *get_Sel_entity (ir_node *node); /* entity to select */
inline void     set_Sel_entity (ir_node *node, entity *ent);
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typedef enum {
  static_linkage,       /* entity is used internal and not visible out of this
			   file/class. */
  external_linkage,     /* */
  no_linkage
} linkage_type;
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inline linkage_type get_Sel_linkage_type (ir_node *node);
inline void     set_Sel_linkage_type (ir_node *node, linkage_type lt);
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inline ir_node *get_Call_mem (ir_node *node);
inline void     set_Call_mem (ir_node *node, ir_node *mem);
inline ir_node *get_Call_ptr (ir_node *node);
inline void     set_Call_ptr (ir_node *node, ir_node *ptr);
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inline ir_node **get_Call_param_arr (ir_node *node);
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inline int      get_Call_n_params (ir_node *node);
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inline int      get_Call_arity (ir_node *node);
/* inline void     set_Call_arity (ir_node *node, ir_node *arity); */
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inline ir_node *get_Call_param (ir_node *node, int pos);
inline void     set_Call_param (ir_node *node, int pos, ir_node *param);
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inline type    *get_Call_type (ir_node *node);
inline void     set_Call_type (ir_node *node, type *type);
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/* For unary and binary arithmetic operations the access to the
   operands can be factored out.  Left is the first, right the
   second arithmetic value  as listed in tech report 1999-44.
   unops are: Minus, Abs, Not, Conv
   binops are: Add, Sub, Mul, Quot, DivMod, Div, Mod, And, Or, Eor, Shl,
   Shr, Shrs, Rot, Cmp */
inline int      is_unop (ir_node *node);
inline ir_node *get_unop_op (ir_node *node);
inline void     set_unop_op (ir_node *node, ir_node *op);
inline int      is_binop (ir_node *node);
inline ir_node *get_binop_left (ir_node *node);
inline void     set_binop_left (ir_node *node, ir_node *left);
inline ir_node *get_binop_right (ir_node *node);
inline void     set_binop_right (ir_node *node, ir_node *right);

inline ir_node *get_Add_left (ir_node *node);
inline void     set_Add_left (ir_node *node, ir_node *left);
inline ir_node *get_Add_right (ir_node *node);
inline void     set_Add_right (ir_node *node, ir_node *right);

inline ir_node *get_Sub_left (ir_node *node);
inline void     set_Sub_left (ir_node *node, ir_node *left);
inline ir_node *get_Sub_right (ir_node *node);
inline void     set_Sub_right (ir_node *node, ir_node *right);

inline ir_node *get_Minus_op (ir_node *node);
inline void     set_Minus_op (ir_node *node, ir_node *op);

inline ir_node *get_Mul_left (ir_node *node);
inline void     set_Mul_left (ir_node *node, ir_node *left);
inline ir_node *get_Mul_right (ir_node *node);
inline void     set_Mul_right (ir_node *node, ir_node *right);

inline ir_node *get_Quot_left (ir_node *node);
inline void     set_Quot_left (ir_node *node, ir_node *left);
inline ir_node *get_Quot_right (ir_node *node);
inline void     set_Quot_right (ir_node *node, ir_node *right);
inline ir_node *get_Quot_mem (ir_node *node);
inline void     set_Quot_mem (ir_node *node, ir_node *mem);

inline ir_node *get_DivMod_left (ir_node *node);
inline void     set_DivMod_left (ir_node *node, ir_node *left);
inline ir_node *get_DivMod_right (ir_node *node);
inline void     set_DivMod_right (ir_node *node, ir_node *right);
inline ir_node *get_DivMod_mem (ir_node *node);
inline void     set_DivMod_mem (ir_node *node, ir_node *mem);

inline ir_node *get_Div_left (ir_node *node);
inline void     set_Div_left (ir_node *node, ir_node *left);
inline ir_node *get_Div_right (ir_node *node);
inline void     set_Div_right (ir_node *node, ir_node *right);
inline ir_node *get_Div_mem (ir_node *node);
inline void     set_Div_mem (ir_node *node, ir_node *mem);

inline ir_node *get_Mod_left (ir_node *node);
inline void     set_Mod_left (ir_node *node, ir_node *left);
inline ir_node *get_Mod_right (ir_node *node);
inline void     set_Mod_right (ir_node *node, ir_node *right);
inline ir_node *get_Mod_mem (ir_node *node);
inline void     set_Mod_mem (ir_node *node, ir_node *mem);

inline ir_node *get_Abs_op (ir_node *node);
inline void     set_Abs_op (ir_node *node, ir_node *op);

inline ir_node *get_And_left (ir_node *node);
inline void     set_And_left (ir_node *node, ir_node *left);
inline ir_node *get_And_right (ir_node *node);
inline void     set_And_right (ir_node *node, ir_node *right);

inline ir_node *get_Or_left (ir_node *node);
inline void     set_Or_left (ir_node *node, ir_node *left);
inline ir_node *get_Or_right (ir_node *node);
inline void     set_Or_right (ir_node *node, ir_node *right);

inline ir_node *get_Eor_left (ir_node *node);
inline void     set_Eor_left (ir_node *node, ir_node *left);
inline ir_node *get_Eor_right (ir_node *node);
inline void     set_Eor_right (ir_node *node, ir_node *right);

inline ir_node *get_Not_op (ir_node *node);
inline void     set_Not_op (ir_node *node, ir_node *op);

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/* Projection numbers of compare: use for Proj nodes! */
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typedef enum {
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  False,		/* false */
  Eq,			/* equal */
  Lt,			/* less */
  Le,			/* less or equal */
  Gt,			/* greater */
  Ge,			/* greater or equal */
  Lg,			/* less or greater */
  Leg,			/* less, equal or greater = ordered */
  Uo,			/* unordered */
  Ue,			/* unordered or equal */
  Ul,			/* unordered or less */
  Ule,			/* unordered, less or equal */
  Ug,			/* unordered or greater */
  Uge,			/* unordered, greater or equal */
  Ne,			/* unordered, less or greater = not equal */
  True,		        /* true */
  not_mask = Leg	/* bits to flip to negate comparison */
} pnc_number;
inline char *get_pnc_string(int pnc);
inline int   get_negated_pnc(int pnc);
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inline ir_node *get_Cmp_left (ir_node *node);
inline void     set_Cmp_left (ir_node *node, ir_node *left);
inline ir_node *get_Cmp_right (ir_node *node);
inline void     set_Cmp_right (ir_node *node, ir_node *right);

inline ir_node *get_Shl_left (ir_node *node);
inline void     set_Shl_left (ir_node *node, ir_node *left);
inline ir_node *get_Shl_right (ir_node *node);
inline void     set_Shl_right (ir_node *node, ir_node *right);

inline ir_node *get_Shr_left (ir_node *node);
inline void     set_Shr_left (ir_node *node, ir_node *left);
inline ir_node *get_Shr_right (ir_node *node);
inline void     set_Shr_right (ir_node *node, ir_node *right);

inline ir_node *get_Shrs_left (ir_node *node);
inline void     set_Shrs_left (ir_node *node, ir_node *left);
inline ir_node *get_Shrs_right (ir_node *node);
inline void     set_Shrs_right (ir_node *node, ir_node *right);

inline ir_node *get_Rot_left (ir_node *node);
inline void     set_Rot_left (ir_node *node, ir_node *left);
inline ir_node *get_Rot_right (ir_node *node);
inline void     set_Rot_right (ir_node *node, ir_node *right);

inline ir_node *get_Conv_op (ir_node *node);
inline void     set_Conv_op (ir_node *node, ir_node *op);

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inline ir_node **get_Phi_preds_arr (ir_node *node);
inline int       get_Phi_n_preds (ir_node *node);
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/* inline void     set_Phi_n_preds (ir_node *node, int n_preds); */
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inline ir_node  *get_Phi_pred (ir_node *node, int pos);
inline void      set_Phi_pred (ir_node *node, int pos, ir_node *pred);
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inline ir_node *get_Load_mem (ir_node *node);
inline void     set_Load_mem (ir_node *node, ir_node *mem);
inline ir_node *get_Load_ptr (ir_node *node);
inline void     set_Load_ptr (ir_node *node, ir_node *ptr);

inline ir_node *get_Store_mem (ir_node *node);
inline void     set_Store_mem (ir_node *node, ir_node *mem);
inline ir_node *get_Store_ptr (ir_node *node);
inline void     set_Store_ptr (ir_node *node, ir_node *ptr);
inline ir_node *get_Store_value (ir_node *node);
inline void     set_Store_value (ir_node *node, ir_node *value);

inline ir_node *get_Alloc_mem (ir_node *node);
inline void     set_Alloc_mem (ir_node *node, ir_node *mem);
inline ir_node *get_Alloc_size (ir_node *node);
inline void     set_Alloc_size (ir_node *node, ir_node *size);
inline type    *get_Alloc_type (ir_node *node);
inline void     set_Alloc_type (ir_node *node, type *type);
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typedef enum {
  stack_alloc,          /* Alloc allocates the object on the stack. */
  heap_alloc            /* Alloc allocates the object on the heap. */
} where_alloc;
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inline where_alloc  get_Alloc_where (ir_node *node);
inline void         set_Alloc_where (ir_node *node, where_alloc where);

inline ir_node *get_Free_mem (ir_node *node);
inline void     set_Free_mem (ir_node *node, ir_node *mem);
inline ir_node *get_Free_ptr (ir_node *node);
inline void     set_Free_ptr (ir_node *node, ir_node *ptr);
inline ir_node *get_Free_size (ir_node *node);
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inline void     set_Free_size (ir_node *node, ir_node *size);
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inline type    *get_Free_type (ir_node *node);
inline void     set_Free_type (ir_node *node, type *type);

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inline ir_node **get_Sync_preds_arr (ir_node *node);
inline int       get_Sync_n_preds (ir_node *node);
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/* inline void     set_Sync_n_preds (ir_node *node, int n_preds); */
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inline ir_node  *get_Sync_pred (ir_node *node, int pos);
inline void      set_Sync_pred (ir_node *node, int pos, ir_node *pred);
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inline ir_node  *get_Proj_pred (ir_node *node);
inline void      set_Proj_pred (ir_node *node, ir_node *pred);
inline long      get_Proj_proj (ir_node *node);
inline void      set_Proj_proj (ir_node *node, long proj);
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inline ir_node **get_Tuple_preds_arr (ir_node *node);
inline int       get_Tuple_n_preds (ir_node *node);
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/* inline void     set_Tuple_n_preds (ir_node *node, int n_preds); */
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inline ir_node  *get_Tuple_pred (ir_node *node, int pos);
inline void      set_Tuple_pred (ir_node *node, int pos, ir_node *pred);
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inline ir_node  *get_Id_pred (ir_node *node);
inline void      set_Id_pred (ir_node *node, ir_node *pred);
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/*****/
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/****s* irnode/other2
 *
 * NAME Auxiliary routines
 *
 * NOTE Not properly documented ;-)
 *
 * SOURCE
 */
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/* returns operand of node if node is a Proj. */
inline ir_node *skip_Proj (ir_node *node);
/* returns operand of node if node is a Id */
inline ir_node *skip_nop  (ir_node *node);
/* returns true if node is a Bad node. */
inline int      is_Bad    (ir_node *node);
/* returns true if the node is not a Block */
inline int      is_no_Block (ir_node *node);
/* Returns true if the operation manipulates control flow:
   Start, End, Jmp, Cond, Return, Raise */
int is_cfop(ir_node *node);
/* Returns true if the operation can change the control flow because
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   of an exception. */
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int is_fragile_op(ir_node *node);

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/*****/
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/* Makros for debugging the libfirm */
#ifdef DEBUG_libfirm
#include "ident.h"

#define DDMSG        printf("%s(l.%i)\n", __FUNCTION__, __LINE__)
#define DDMSG1(X)    printf("%s(l.%i) %s\n", __FUNCTION__, __LINE__,         \
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                            id_to_str(get_irn_opident(X)))
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#define DDMSG2(X)    printf("%s(l.%i) %s: %ld\n", __FUNCTION__, __LINE__,     \
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                     id_to_str(get_irn_opident(X)), get_irn_node_nr(X))
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#define DDMSG3(X)    printf("%s(l.%i) %s: %p\n", __FUNCTION__, __LINE__,     \
                     print_firm_kind(X), (X))
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#endif

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# endif /* _IRNODE_H_ */