1 /* Copyright (C) 1998 - 2000 by Universitaet Karlsruhe
2 ** All rights reserved.
4 ** Authors: Martin Trapp, Christian Schaefer
6 ** declarations of an ir node
17 # include "common_t.h"
18 # include "irdom_t.h" /* For size of struct dom_info. */
22 /** ir node attributes **/
24 /* Block attributes */
26 unsigned long block_visited; /* for the walker that walks over all blocks. */
27 /* Attributes private to construction: */
28 bool matured; /* if set, all in-nodes of the block are fixed */
29 struct ir_node **graph_arr; /* array to store all parameters */
30 struct dom_info dom; /* Datastructure that holds information about dominators.
31 @@@ Eventually overlay with graph_arr as only valid
32 in different phases. Eventually inline the whole
34 exc_t exc; /* role of this block for exception handling */
39 cond_kind kind; /* flavor of Cond */
40 long default_proj; /* for optimization: biggest Proj number, i.e. the one
44 /* SymConst attributes */
45 /* This union contains the symbolic information represented by the node */
46 typedef union type_or_id {
58 entity *ent; /* entity to select */
59 linkage_type ltyp; /* linkage type of the entity */
63 type *cld_tp; /* type of called procedure */
64 #if PRECISE_EXC_CONTEXT
65 struct ir_node **frag_arr; /* For Phi node construction in case of exceptions */
69 /* Alloc attributes */
71 type *type; /* Type of the allocated object. */
72 where_alloc where; /* stack, heap or other managed part of memory */
73 #if PRECISE_EXC_CONTEXT
74 struct ir_node **frag_arr; /* For Phi node construction in case of exceptions */
78 /* Some irnodes just have one attribute, these are stored here,
79 some have more. Their name is 'irnodename_attr' */
81 block_attr block; /* For Block: Fields needed to construct it */
82 cond_attr c; /* For Cond. */
83 struct tarval *con; /* For Const: contains the value of the constant */
84 symconst_attr i; /* For SymConst. */
85 sel_attr s; /* For Sel. */
86 call_attr call; /* For Call: pointer to the type of the method to call */
87 alloc_attr a; /* For Alloc. */
88 type *f; /* For Free. */
89 int phi0_pos; /* For Phi. Used to remember the value defined by
90 this Phi node. Needed when the Phi is completed
91 to call get_r_internal_value to find the
92 predecessors. If this attribute is set, the Phi
93 node takes the role of the obsolete Phi0 node,
94 therefore the name. */
95 long proj; /* For Proj: contains the result position to project */
96 #if PRECISE_EXC_CONTEXT
97 struct ir_node **frag_arr; /* For Phi node construction in case of exceptions
98 for nodes Store, Load, Div, Mod, Quot, DivMod. */
103 /* common structure of an irnode */
104 /* if the node has some attributes, they are stored in attr */
107 /** Basics of the representation **/
108 firm_kind kind; /* distinguishes this node from others */
109 ir_op *op; /* Opcode of this node. */
110 ir_mode *mode; /* Mode of this node. */
111 unsigned long visited; /* visited counter for walks of the graph */
112 struct ir_node **in; /* array with predecessors / operands */
113 struct ir_node *link; /* for linking nodes somehow to a list, e.g.
114 used while construction to link Phi0 nodes and
115 during optimization to link to nodes that
116 shall replace a node. */
117 /** Fields for optimizations / analysis information **/
118 struct ir_node **out; /* array of out edges */
119 /** For debugging **/
121 int node_nr; /* a unique node number for each node to make output
124 attr attr; /* attribute of this node. Depends on opcode. */
125 /* Must be last field of struct ir_node. */
128 /* Copies all attributes stored in the old node to the new node.
129 Assumes both have the same opcode and sufficient size. */
131 copy_attrs (ir_node *old, ir_node *new);
134 /* Print IR-Nodes with attributes */
135 /* @@@@ brauchen wir dienoch? dann fliegt ev. das xprint raus?*/
136 int ir_node_print (XP_PAR1, const xprintf_info *, XP_PARN);
139 /** access attributes directly **/
140 inline tarval *get_irn_const_attr (ir_node *node);
141 inline long get_irn_proj_attr (ir_node *node);
142 inline alloc_attr get_irn_alloc_attr (ir_node *node);
143 inline type *get_irn_free_attr (ir_node *node);
144 inline symconst_attr get_irn_symconst_attr (ir_node *node);
145 type *get_irn_call_attr (ir_node *node);
146 sel_attr get_irn_sel_attr (ir_node *node);
147 int get_irn_phi_attr (ir_node *node);
148 block_attr get_irn_return_attr (ir_node *node);
150 # endif /* _IRNODE_T_H_ */