3 * File name: ir/ir/irnode_t.h
4 * Purpose: Representation of an intermediate operation -- private header.
5 * Author: Martin Trapp, Christian Schaefer
6 * Modified by: Goetz Lindenmaier
9 * Copyright: (c) 1998-2003 Universität Karlsruhe
10 * Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE.
17 * Declarations of an ir node.
19 * @author Martin Trapp, Christian Schaefer
32 # include "firm_common_t.h"
33 # include "irdom_t.h" /* For size of struct dom_info. */
38 /** ir node attributes **/
40 /** Block attributes */
42 unsigned long block_visited; /**< for the walker that walks over all blocks. */
43 /* Attributes private to construction: */
44 bool matured; /**< if set, all in-nodes of the block are fixed */
45 struct ir_node **graph_arr; /**< array to store all parameters */
46 struct dom_info dom; /**< Datastructure that holds information about dominators.
48 Eventually overlay with graph_arr as only valid
49 in different phases. Eventually inline the whole
51 exc_t exc; /**< role of this block for exception handling */
52 ir_node *handler_entry; /**< handler entry block iff this block is part of a region */
53 ir_node ** in_cg; /**< array with predecessors in
54 * interprocedural_view, if they differ
55 * from intraprocedural predecessors */
56 int *backedge; /**< Field n set to true if pred n is backedge.
57 @todo Ev. replace by bitfield! */
58 int *cg_backedge; /**< Field n set to true if pred n is interprocedural backedge.
59 @todo Ev. replace by bitfield! */
62 /** Start attributes */
67 /** Cond attributes */
69 cond_kind kind; /**< flavor of Cond */
70 long default_proj; /**< for optimization: biggest Proj number, i.e. the one
74 /** SymConst attributes
75 This union contains the symbolic information represented by the node */
76 typedef union type_or_id {
88 entity *ent; /**< entity to select */
92 type *cld_tp; /**< type of called procedure */
93 #if PRECISE_EXC_CONTEXT
94 struct ir_node **frag_arr; /**< For Phi node construction in case of exceptions */
96 entity ** callee_arr; /**< result of callee analysis */
99 /** Alloc attributes */
101 type *type; /**< Type of the allocated object. */
102 where_alloc where; /**< stack, heap or other managed part of memory */
103 #if PRECISE_EXC_CONTEXT
104 struct ir_node **frag_arr; /**< For Phi node construction in case of exceptions */
108 /** InstOf attributes */
115 /** Filter attributes */
117 long proj; /**< contains the result position to project (Proj) */
118 ir_node ** in_cg; /**< array with interprocedural predecessors (Phi) */
119 int *backedge; /**< Field n set to true if pred n is backedge.
120 @todo Ev. replace by bitfield! */
123 /** EndReg/EndExcept attributes */
125 ir_graph * irg; /**< ir_graph this node belongs to (for
126 * navigating in interprocedural graphs) */
129 /** CallBegin attributes */
131 ir_graph * irg; /**< ir_graph this node belongs to (for
132 * navigating in interprocedural graphs) */
133 ir_node * call; /**< associated Call-operation */
136 /** Cast attributes */
141 /** Some irnodes just have one attribute, these are stored here,
142 some have more. Their name is 'irnodename_attr' */
144 start_attr start; /**< For Start */
145 block_attr block; /**< For Block: Fields needed to construct it */
146 cond_attr c; /**< For Cond. */
147 struct tarval *con; /**< For Const: contains the value of the constant */
148 symconst_attr i; /**< For SymConst. */
149 sel_attr s; /**< For Sel. */
150 call_attr call; /**< For Call: pointer to the type of the method to call */
151 callbegin_attr callbegin; /**< For CallBegin */
152 alloc_attr a; /**< For Alloc. */
153 io_attr io; /**< For InstOf */
154 type *f; /**< For Free. */
155 cast_attr cast; /**< For Cast. */
156 int phi0_pos; /**< For Phi. Used to remember the value defined by
157 this Phi node. Needed when the Phi is completed
158 to call get_r_internal_value to find the
159 predecessors. If this attribute is set, the Phi
160 node takes the role of the obsolete Phi0 node,
161 therefore the name. */
162 int *phi_backedge; /**< For Phi after construction.
163 Field n set to true if pred n is backedge.
164 @todo Ev. replace by bitfield! */
165 long proj; /**< For Proj: contains the result position to project */
166 filter_attr filter; /**< For Filter */
167 end_attr end; /**< For EndReg, EndExcept */
168 #if PRECISE_EXC_CONTEXT
169 struct ir_node **frag_arr; /**< For Phi node construction in case of exceptions
170 for nodes Store, Load, Div, Mod, Quot, DivMod. */
175 /** common structure of an irnode
176 if the node has some attributes, they are stored in attr */
178 /* ------- Basics of the representation ------- */
179 firm_kind kind; /**< distinguishes this node from others */
180 ir_op *op; /**< Opcode of this node. */
181 ir_mode *mode; /**< Mode of this node. */
182 unsigned long visited; /**< visited counter for walks of the graph */
183 struct ir_node **in; /**< array with predecessors / operands */
184 void *link; /**< to attach additional information to the node, e.g.
185 used while construction to link Phi0 nodes and
186 during optimization to link to nodes that
187 shall replace a node. */
188 /* ------- Fields for optimizations / analysis information ------- */
189 struct ir_node **out; /**< array of out edges */
190 struct dbg_info* dbi; /**< A pointer to information for debug support. */
191 /* ------- For debugging ------- */
193 int node_nr; /**< a unique node number for each node to make output
196 attr attr; /**< attribute of this node. Depends on opcode.
197 Must be last field of struct ir_node. */
200 /** Copies all attributes stored in the old node to the new node.
201 Assumes both have the same opcode and sufficient size. */
203 copy_attrs (ir_node *old, ir_node *new);
206 /** Returns the array with the ins. The content of the array may not be
208 ir_node **get_irn_in (const ir_node *node);
211 /** access attributes directly */
212 INLINE tarval *get_irn_const_attr (ir_node *node);
213 INLINE long get_irn_proj_attr (ir_node *node);
214 INLINE alloc_attr get_irn_alloc_attr (ir_node *node);
215 INLINE type *get_irn_free_attr (ir_node *node);
216 INLINE symconst_attr get_irn_symconst_attr (ir_node *node);
217 type *get_irn_call_attr (ir_node *node);
218 sel_attr get_irn_sel_attr (ir_node *node);
219 int get_irn_phi_attr (ir_node *node);
220 block_attr get_irn_block_attr (ir_node *node);
223 # endif /* _IRNODE_T_H_ */