3 * File name: ir/ir/irop.h
4 * Purpose: Representation of opcode of intermediate operation.
5 * Author: 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.
16 * Operators of firm nodes.
18 * @author Christian Schaefer
20 * This module specifies the opcodes possible for ir nodes. Their
21 * definition is close to the operations specified in UKA Tech-Report
27 #include "firm_types.h"
32 /** The allowed parities */
35 oparity_unary, /**< an unary operator -- considering 'numeric' arguments. */
36 oparity_binary, /**< an binary operator -- considering 'numeric' arguments.*/
37 oparity_trinary, /**< an trinary operator -- considering 'numeric' arguments.*/
38 oparity_zero, /**< no operators, as e.g. Const. */
39 oparity_variable, /**< arity not fixed by opcode, but statically
40 known. E.g., number of arguments to call. */
41 oparity_dynamic, /**< arity depends on state of firm representation.
42 Can change by optimizations...
43 We must allocate a dynamic in array for the node! */
44 oparity_any /**< other arity */
50 irop_flag_none = 0x00000000, /**< nothing */
51 irop_flag_labeled = 0x00000001, /**< if set, Output edge labels on in-edges in vcg graph */
52 irop_flag_commutative = 0x00000002, /**< operation is commutative */
53 irop_flag_cfopcode = 0x00000004, /**< is a control flow operation */
54 irop_flag_ip_cfopcode = 0x00000008, /**< operation manipulates interprocedural control flow */
55 irop_flag_fragile = 0x00000010, /**< set if the operation can change the control flow because
57 irop_flag_forking = 0x00000020, /**< the operation is a forking control flow */
58 irop_flag_highlevel = 0x00000040, /**< the operation is a pure high-level one and can be
59 skipped in low-level optimizations */
60 irop_flag_constlike = 0x00000080, /**< the operation has no arguments and is some
62 irop_flag_keep = 0x00000100, /**< this operation can be kept in End's keep-alive list */
63 irop_flag_machine = 0x00000200 /**< this operation is a machine operation, all higher flags are machine flags */
66 /** The opcodes of the libFirm predefined operations. */
69 iro_Start, iro_End, iro_Jmp, iro_IJmp, iro_Cond, iro_Return,
70 iro_Const, iro_SymConst,
72 iro_Call, iro_Add, iro_Sub, iro_Minus, iro_Mul, iro_Quot, iro_DivMod,
73 iro_Div, iro_Mod, iro_Abs, iro_And, iro_Or, iro_Eor, iro_Not,
74 iro_Cmp, iro_Shl, iro_Shr, iro_Shrs, iro_Rot, iro_Conv, iro_Cast,
75 iro_Carry, iro_Borrow,
77 iro_Load, iro_Store, iro_Alloc, iro_Free, iro_Sync,
78 iro_Proj, iro_Tuple, iro_Id, iro_Bad, iro_Confirm,
79 iro_Unknown, iro_Filter, iro_Break, iro_CallBegin, iro_EndReg, iro_EndExcept,
80 iro_NoMem, iro_Mux, iro_Psi, iro_CopyB,
81 iro_InstOf, iro_Raise, iro_Bound,
85 typedef struct ir_op ir_op;
87 extern ir_op *op_Block; ir_op *get_op_Block (void);
89 extern ir_op *op_Start; ir_op *get_op_Start (void);
90 extern ir_op *op_End; ir_op *get_op_End (void);
91 extern ir_op *op_Jmp; ir_op *get_op_Jmp (void);
92 extern ir_op *op_IJmp; ir_op *get_op_IJmp (void);
93 extern ir_op *op_Cond; ir_op *get_op_Cond (void);
94 extern ir_op *op_Return; ir_op *get_op_Return (void);
95 extern ir_op *op_Sel; ir_op *get_op_Sel (void);
97 extern ir_op *op_Const; ir_op *get_op_Const (void);
98 extern ir_op *op_SymConst; ir_op *get_op_SymConst (void);
100 extern ir_op *op_Call; ir_op *get_op_Call (void);
101 extern ir_op *op_Add; ir_op *get_op_Add (void);
102 extern ir_op *op_Sub; ir_op *get_op_Sub (void);
103 extern ir_op *op_Minus; ir_op *get_op_Minus (void);
104 extern ir_op *op_Mul; ir_op *get_op_Mul (void);
105 extern ir_op *op_Quot; ir_op *get_op_Quot (void);
106 extern ir_op *op_DivMod; ir_op *get_op_DivMod (void);
107 extern ir_op *op_Div; ir_op *get_op_Div (void);
108 extern ir_op *op_Mod; ir_op *get_op_Mod (void);
109 extern ir_op *op_Abs; ir_op *get_op_Abs (void);
110 extern ir_op *op_And; ir_op *get_op_And (void);
111 extern ir_op *op_Or; ir_op *get_op_Or (void);
112 extern ir_op *op_Eor; ir_op *get_op_Eor (void);
113 extern ir_op *op_Not; ir_op *get_op_Not (void);
114 extern ir_op *op_Cmp; ir_op *get_op_Cmp (void);
115 extern ir_op *op_Shl; ir_op *get_op_Shl (void);
116 extern ir_op *op_Shr; ir_op *get_op_Shr (void);
117 extern ir_op *op_Shrs; ir_op *get_op_Shrs (void);
118 extern ir_op *op_Rot; ir_op *get_op_Rot (void);
119 extern ir_op *op_Conv; ir_op *get_op_Conv (void);
120 extern ir_op *op_Cast; ir_op *get_op_Cast (void);
121 extern ir_op *op_Carry; ir_op *get_op_Carry (void);
122 extern ir_op *op_Borrow; ir_op *get_op_Borrow (void);
124 extern ir_op *op_Phi; ir_op *get_op_Phi (void);
126 extern ir_op *op_Load; ir_op *get_op_Load (void);
127 extern ir_op *op_Store; ir_op *get_op_Store (void);
128 extern ir_op *op_Alloc; ir_op *get_op_Alloc (void);
129 extern ir_op *op_Free; ir_op *get_op_Free (void);
131 extern ir_op *op_Sync; ir_op *get_op_Sync (void);
133 extern ir_op *op_Tuple; ir_op *get_op_Tuple (void);
134 extern ir_op *op_Proj; ir_op *get_op_Proj (void);
135 extern ir_op *op_Id; ir_op *get_op_Id (void);
136 extern ir_op *op_Bad; ir_op *get_op_Bad (void);
137 extern ir_op *op_Confirm; ir_op *get_op_Confirm (void);
139 extern ir_op *op_Unknown; ir_op *get_op_Unknown (void);
140 extern ir_op *op_Filter; ir_op *get_op_Filter (void);
141 extern ir_op *op_Break; ir_op *get_op_Break (void);
142 extern ir_op *op_CallBegin; ir_op *get_op_CallBegin (void);
143 extern ir_op *op_EndReg; ir_op *get_op_EndReg (void);
144 extern ir_op *op_EndExcept; ir_op *get_op_EndExcept (void);
146 extern ir_op *op_NoMem; ir_op *get_op_NoMem (void);
147 extern ir_op *op_Mux; ir_op *get_op_Mux (void);
148 extern ir_op *op_Psi; ir_op *get_op_Psi (void);
149 extern ir_op *op_CopyB; ir_op *get_op_CopyB (void);
151 extern ir_op *op_InstOf; ir_op *get_op_InstOf (void);
152 extern ir_op *op_Raise; ir_op *get_op_Raise (void);
153 extern ir_op *op_Bound; ir_op *get_op_Bound (void);
155 /** Returns the ident for the opcode name */
156 ident *get_op_ident(const ir_op *op);
158 /** Returns the string for the opcode. */
159 const char *get_op_name(const ir_op *op);
161 /** Returns the enum for the opcode */
162 opcode get_op_code(const ir_op *op);
164 /** op_pin_state_pinned states */
166 op_pin_state_floats = 0, /**< Nodes of this opcode can be placed in any basic block. */
167 op_pin_state_pinned, /**< Nodes must remain in this basic block. */
168 op_pin_state_exc_pinned, /**< Node must be remain in this basic block if it can throw an
169 exception, else can float. Used internally. */
170 op_pin_state_mem_pinned /**< Node must be remain in this basic block if it can throw an
171 exception or uses memory, else can float. Used internally. */
174 const char *get_op_pin_state_name(op_pin_state s);
176 /** gets pinned state of an opcode */
177 op_pin_state get_op_pinned(const ir_op *op);
179 /** Sets pinned in the opcode. Setting it to floating has no effect
180 for Block, Phi and control flow nodes. */
181 void set_op_pinned(ir_op *op, op_pin_state pinned);
183 /** Returns the next free IR opcode number, allows to register user ops */
184 unsigned get_next_ir_opcode(void);
186 /** Returns the next free n IR opcode number, allows to register a bunch of user ops */
187 unsigned get_next_ir_opcodes(unsigned num);
190 * A generic function pointer.
192 typedef void (*op_func)(void);
194 /** The NULL-function. */
195 #define NULL_FUNC ((generic_func)(NULL))
198 * Returns the generic function pointer from an ir operation.
200 op_func get_generic_function_ptr(const ir_op *op);
203 * Store a generic function pointer into an ir operation.
205 void set_generic_function_ptr(ir_op *op, op_func func);
208 * The compute value operation.
209 * This operation evaluates an IR node into a tarval if possible,
210 * returning tarval_bad otherwise.
212 typedef tarval *(*computed_value_func)(ir_node *self);
215 * The equivalent node operation.
216 * This operation returns an equivalent node for the input node.
217 * It does not create new nodes. It is therefore safe to free self
218 * if the node returned is not self.
219 * If a node returns a Tuple we can not just skip it. If the size of the
220 * in array fits, we transform n into a tuple (e.g., possible for Div).
222 typedef ir_node *(*equivalent_node_func)(ir_node *self);
225 * The transform node operation.
226 * This operation tries several [inplace] [optimizing] transformations
227 * and returns an equivalent node.
228 * The difference to equivalent_node() is that these
229 * transformations _do_ generate new nodes, and thus the old node must
230 * not be freed even if the equivalent node isn't the old one.
232 typedef ir_node *(*transform_node_func)(ir_node *self);
235 * The node attribute compare operation.
236 * Compares the nodes attributes of two nodes of identical opcode
237 * and returns 0 if the attributes are identical, 1 if they differ.
239 typedef int (*node_cmp_attr_func)(ir_node *a, ir_node *b);
242 * The reassociation operation.
243 * Called from a walker. Returns non-zero if
244 * a reassociation rule was applied.
245 * The pointer n is set to the newly created node, if some reassociation
248 typedef int (*reassociate_func)(ir_node **n);
251 * The copy attribute operation.
252 * Copy the node attributes from a 'old' node to a 'new' one.
254 typedef void (*copy_attr_func)(const ir_node *old_node, ir_node *new_node);
257 * The get_type operation.
258 * Return the type of the node self.
260 typedef ir_type *(*get_type_func)(ir_node *self);
263 * The get_type_attr operation. Used to traverse all types that can be
264 * accessed from an ir_graph.
265 * Return the type attribute of the node self.
267 typedef ir_type *(*get_type_attr_func)(ir_node *self);
270 * The get_entity_attr operation. Used to traverse all entities that can be
271 * accessed from an ir_graph.
272 * Return the entity attribute of the node self.
274 typedef entity *(*get_entity_attr_func)(ir_node *self);
277 * The verify_node operation.
278 * Return non-zero if the node verification is ok, else 0.
279 * Depending on the node verification settings, may even assert.
281 * @see do_node_verification()
283 typedef int (*verify_node_func)(ir_node *self, ir_graph *irg);
286 * The verify_node operation for Proj(X).
287 * Return non-zero if the node verification is ok, else 0.
288 * Depending on the node verification settings, may even assert.
290 * @see do_node_verification()
292 typedef int (*verify_proj_node_func)(ir_node *self, ir_node *proj);
295 * Reasons to call the dump_node operation:
298 dump_node_opcode_txt, /**< dump the opcode */
299 dump_node_mode_txt, /**< dump the mode */
300 dump_node_nodeattr_txt, /**< dump node attributes to be shown in the label */
301 dump_node_info_txt /**< dump node attributes into info1 */
305 * The dump_node operation.
306 * Writes several informations requested by reason to
309 typedef int (*dump_node_func)(ir_node *self, FILE *F, dump_reason_t reason);
315 computed_value_func computed_value; /**< evaluates a node into a tarval if possible. */
316 equivalent_node_func equivalent_node; /**< optimizes the node by returning an equivalent one. */
317 transform_node_func transform_node; /**< optimizes the node by transforming it. */
318 node_cmp_attr_func node_cmp_attr; /**< compares two node attributes. */
319 reassociate_func reassociate; /**< reassociate a tree */
320 copy_attr_func copy_attr; /**< copy node attributes */
321 get_type_func get_type; /**< return the type of a node */
322 get_type_attr_func get_type_attr; /**< return the type attribute of a node */
323 get_entity_attr_func get_entity_attr; /**< return the entity attribute of a node */
324 verify_node_func verify_node; /**< verify the node */
325 verify_proj_node_func verify_proj_node; /**< verify the Proj node */
326 dump_node_func dump_node; /**< dump a node */
327 op_func generic; /**< a generic function */
331 * Creates a new ir operation.
333 * @param code the opcode, one of type \c opcode
334 * @param name the printable name of this opcode
335 * @param p whether operations of this opcode are op_pin_state_pinned or floating
336 * @param flags a bitmask of irop_flags describing the behavior of the ir operation
337 * @param opar the parity of this ir operation
338 * @param op_index if the parity is oparity_unary, oparity_binary or oparity_trinary the index
339 * of the left operand
340 * @param ops operations for this opcode, iff NULL default operations are used
341 * @param attr_size attribute size for this ir operation
343 * @return The generated ir operation.
345 * This function can create all standard Firm opcode as well as new ones.
346 * The behavior of new opcode depends on the operations \c ops and the \c flags.
348 ir_op * new_ir_op(opcode code, const char *name, op_pin_state p,
349 unsigned flags, op_arity opar, int op_index, size_t attr_size,
350 const ir_op_ops *ops);
352 /** Returns the ir_op_ops of an ir_op. */
353 const ir_op_ops *get_op_ops(const ir_op *op);
355 #endif /* _IROP_H_ */