1 /* Copyright (C) 1998 - 2000 by Universitaet Karlsruhe
2 ** All rights reserved.
4 ** Authors: Martin Trapp, Christian Schaefer
6 ** declarations of an ir node
18 /** ir node attributes **/
19 /* Block attributes */
21 unsigned long block_visited; /* for the walker that walks over all blocks. */
22 /* Attributes private to construction: */
23 bool matured; /* if set, all in-nodes of the block are fixed */
24 struct ir_node **graph_arr; /* array to store all parameters */
29 cond_kind kind; /* flavor of Cond */
30 long default_proj; /* for optimization: biggest Proj number, i.e. the one
34 /* SymConst attributes */
35 /* This union contains the symbolic information represented by the node */
36 typedef union type_or_id {
48 entity *ent; /* entity to select */
49 linkage_type ltyp; /* linkage type of the entity */
53 type *cld_tp; /* type of called procedure */
54 #if PRECISE_EXC_CONTEXT
55 struct ir_node **frag_arr; /* For Phi node construction in case of exceptions */
59 /* Alloc attributes */
61 type *type; /* Type of the allocated object. */
62 where_alloc where; /* stack, heap or other managed part of memory */
63 #if PRECISE_EXC_CONTEXT
64 struct ir_node **frag_arr; /* For Phi node construction in case of exceptions */
68 /* Some irnodes just have one attribute, these are stored here,
69 some have more. Their name is 'irnodename_attr' */
71 block_attr block; /* For Block: Fields needed to construct it */
72 cond_attr c; /* For Cond. */
73 struct tarval *con; /* For Const: contains the value of the constant */
74 symconst_attr i; /* For SymConst. */
75 sel_attr s; /* For Sel. */
76 call_attr call; /* For Call: pointer to the type of the method to call */
77 alloc_attr a; /* For Alloc. */
78 type *f; /* For Free. */
79 int phi0_pos; /* For Phi. Used to remember the value defined by
80 this Phi node. Needed when the Phi is completed
81 to call get_r_internal_value to find the
82 predecessors. If this attribute is set, the Phi
83 node takes the role of the obsolete Phi0 node,
84 therefore the name. */
85 long proj; /* For Proj: contains the result position to project */
86 #if PRECISE_EXC_CONTEXT
87 struct ir_node **frag_arr; /* For Phi node construction in case of exceptions
88 for nodes Store, Load, Div, Mod, Quot, DivMod. */
93 /* common structure of an irnode */
94 /* if the node has some attributes, they are stored in attr */
97 /** Basics of the representation **/
98 firm_kind kind; /* distinguishes this node from others */
99 ir_op *op; /* Opcode of this node. */
100 ir_mode *mode; /* Mode of this node. */
101 unsigned long visited; /* visited counter for walks of the graph */
102 struct ir_node **in; /* array with predecessors / operands */
103 struct ir_node *link; /* for linking nodes somehow to a list, e.g.
104 used while construction to link Phi0 nodes and
105 during optimization to link to nodes that
106 shall replace a node. */
107 /** Fields for optimizations / analysis information **/
108 struct ir_node **out; /* array of out edges */
109 /** For debugging **/
111 int node_nr; /* a unique node number for each node to make output
114 attr attr; /* attribute of this node. Depends on opcode. */
115 /* Must be last field of struct ir_node. */
118 /* Copies all attributes stored in the old node to the new node.
119 Assumes both have the same opcode and sufficient size. */
121 copy_attrs (ir_node *old, ir_node *new);
124 /* Print IR-Nodes with attributes */
125 /* @@@@ brauchen wir dienoch? dann fliegt ev. das xprint raus?*/
126 int ir_node_print (XP_PAR1, const xprintf_info *, XP_PARN);
129 /** access attributes directly **/
130 inline tarval *get_irn_const_attr (ir_node *node);
131 inline long get_irn_proj_attr (ir_node *node);
132 inline alloc_attr get_irn_alloc_attr (ir_node *node);
133 inline type *get_irn_free_attr (ir_node *node);
134 inline symconst_attr get_irn_symconst_attr (ir_node *node);
135 type *get_irn_call_attr (ir_node *node);
136 sel_attr get_irn_sel_attr (ir_node *node);
137 int get_irn_phi_attr (ir_node *node);
138 block_attr get_irn_return_attr (ir_node *node);
140 # endif /* _IRNODE_T_H_ */