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"
30 /** The allowed parities */
33 oparity_unary, /**< an unary operator -- considering 'numeric' arguments. */
34 oparity_binary, /**< an binary operator -- considering 'numeric' arguments.*/
35 oparity_trinary, /**< an trinary operator -- considering 'numeric' arguments.*/
36 oparity_zero, /**< no operators, as e.g. Const. */
37 oparity_variable, /**< arity not fixed by opcode, but statically
38 known. E.g., number of arguments to call. */
39 oparity_dynamic, /**< arity depends on state of firm representation.
40 Can change by optimizations...
41 We must allocate a dynamic in array for the node! */
42 oparity_any /**< other arity */
48 irop_flag_none = 0x00000000, /**< nothing */
49 irop_flag_labeled = 0x00000001, /**< if set, Output edge labels on in-edges in vcg graph */
50 irop_flag_commutative = 0x00000002, /**< operation is commutative */
51 irop_flag_cfopcode = 0x00000004, /**< is a control flow operation */
52 irop_flag_ip_cfopcode = 0x00000008, /**< operation manipulates interprocedural control flow */
53 irop_flag_fragile = 0x00000010, /**< set if the operation can change the control flow because
55 irop_flag_forking = 0x00000020, /**< the operation is a forking control flow */
56 irop_flag_highlevel = 0x00000040, /**< the operation is a pure high-level one and can be
57 skipped in low-level optimizations */
58 irop_flag_constlike = 0x00000080 /**< the operation has no arguments and is some
62 /** The opcodes of the libFirm predefined operations. */
65 iro_Start, iro_End, iro_Jmp, iro_IJmp, iro_Cond, iro_Return, iro_Raise,
66 iro_Const, iro_SymConst,
68 iro_Call, iro_Add, iro_Sub, iro_Minus, iro_Mul, iro_Quot, iro_DivMod,
69 iro_Div, iro_Mod, iro_Abs, iro_And, iro_Or, iro_Eor, iro_Not,
70 iro_Cmp, iro_Shl, iro_Shr, iro_Shrs, iro_Rot, iro_Conv, iro_Cast,
72 iro_Load, iro_Store, iro_Alloc, iro_Free, iro_Sync,
73 iro_Proj, iro_Tuple, iro_Id, iro_Bad, iro_Confirm,
74 iro_Unknown, iro_Filter, iro_Break, iro_CallBegin, iro_EndReg, iro_EndExcept,
75 iro_NoMem, iro_Mux, iro_CopyB,
79 typedef struct ir_op ir_op;
81 extern ir_op *op_Block; ir_op *get_op_Block (void);
83 extern ir_op *op_Start; ir_op *get_op_Start (void);
84 extern ir_op *op_End; ir_op *get_op_End (void);
85 extern ir_op *op_Jmp; ir_op *get_op_Jmp (void);
86 extern ir_op *op_IJmp; ir_op *get_op_IJmp (void);
87 extern ir_op *op_Cond; ir_op *get_op_Cond (void);
88 extern ir_op *op_Return; ir_op *get_op_Return (void);
89 extern ir_op *op_Raise; ir_op *get_op_Raise (void);
90 extern ir_op *op_Sel; ir_op *get_op_Sel (void);
91 extern ir_op *op_InstOf; ir_op *get_op_InstOf (void);
93 extern ir_op *op_Const; ir_op *get_op_Const (void);
94 extern ir_op *op_SymConst; ir_op *get_op_SymConst (void);
96 extern ir_op *op_Call; ir_op *get_op_Call (void);
97 extern ir_op *op_Add; ir_op *get_op_Add (void);
98 extern ir_op *op_Sub; ir_op *get_op_Sub (void);
99 extern ir_op *op_Minus; ir_op *get_op_Minus (void);
100 extern ir_op *op_Mul; ir_op *get_op_Mul (void);
101 extern ir_op *op_Quot; ir_op *get_op_Quot (void);
102 extern ir_op *op_DivMod; ir_op *get_op_DivMod (void);
103 extern ir_op *op_Div; ir_op *get_op_Div (void);
104 extern ir_op *op_Mod; ir_op *get_op_Mod (void);
105 extern ir_op *op_Abs; ir_op *get_op_Abs (void);
106 extern ir_op *op_And; ir_op *get_op_And (void);
107 extern ir_op *op_Or; ir_op *get_op_Or (void);
108 extern ir_op *op_Eor; ir_op *get_op_Eor (void);
109 extern ir_op *op_Not; ir_op *get_op_Not (void);
110 extern ir_op *op_Cmp; ir_op *get_op_Cmp (void);
111 extern ir_op *op_Shl; ir_op *get_op_Shl (void);
112 extern ir_op *op_Shr; ir_op *get_op_Shr (void);
113 extern ir_op *op_Shrs; ir_op *get_op_Shrs (void);
114 extern ir_op *op_Rot; ir_op *get_op_Rot (void);
115 extern ir_op *op_Conv; ir_op *get_op_Conv (void);
116 extern ir_op *op_Cast; ir_op *get_op_Cast (void);
118 extern ir_op *op_Phi; ir_op *get_op_Phi (void);
120 extern ir_op *op_Load; ir_op *get_op_Load (void);
121 extern ir_op *op_Store; ir_op *get_op_Store (void);
122 extern ir_op *op_Alloc; ir_op *get_op_Alloc (void);
123 extern ir_op *op_Free; ir_op *get_op_Free (void);
125 extern ir_op *op_Sync; ir_op *get_op_Sync (void);
127 extern ir_op *op_Tuple; ir_op *get_op_Tuple (void);
128 extern ir_op *op_Proj; ir_op *get_op_Proj (void);
129 extern ir_op *op_Id; ir_op *get_op_Id (void);
130 extern ir_op *op_Bad; ir_op *get_op_Bad (void);
131 extern ir_op *op_Confirm; ir_op *get_op_Confirm (void);
133 extern ir_op *op_Unknown; ir_op *get_op_Unknown (void);
134 extern ir_op *op_Filter; ir_op *get_op_Filter (void);
135 extern ir_op *op_Break; ir_op *get_op_Break (void);
136 extern ir_op *op_CallBegin; ir_op *get_op_CallBegin (void);
137 extern ir_op *op_EndReg; ir_op *get_op_EndReg (void);
138 extern ir_op *op_EndExcept; ir_op *get_op_EndExcept (void);
140 extern ir_op *op_NoMem; ir_op *get_op_NoMem (void);
141 extern ir_op *op_Mux; ir_op *get_op_Mux (void);
142 extern ir_op *op_CopyB; ir_op *get_op_CopyB (void);
144 /** Returns the ident for the opcode name */
145 ident *get_op_ident(const ir_op *op);
147 /** Returns the string for the opcode. */
148 const char *get_op_name(const ir_op *op);
150 /** Returns the enum for the opcode */
151 opcode get_op_code(const ir_op *op);
153 /** op_pin_state_pinned states */
155 op_pin_state_floats = 0, /**< Nodes of this opcode can be placed in any basic block. */
156 op_pin_state_pinned, /**< Nodes must remain in this basic block. */
157 op_pin_state_exc_pinned, /**< Node must be remain in this basic block if it can throw an
158 exception, else can float. Used internally. */
159 op_pin_state_mem_pinned /**< Node must be remain in this basic block if it can throw an
160 exception or uses memory, else can float. Used internally. */
163 const char *get_op_pin_state_name(op_pin_state s);
165 /** gets pinned state of an opcode */
166 op_pin_state get_op_pinned(const ir_op *op);
168 /** Sets pinned in the opcode. Setting it to floating has no effect
169 for Block, Phi and control flow nodes. */
170 void set_op_pinned(ir_op *op, op_pin_state pinned);
172 /** Returns the next free IR opcode number, allows to register user ops */
173 unsigned get_next_ir_opcode(void);
176 * A generic function pointer.
178 typedef void (*op_func)(void);
180 /** The NULL-function. */
181 #define NULL_FUNC ((generic_func)(NULL))
184 * Returns the generic function pointer from an ir operation.
186 op_func get_generic_function_ptr(const ir_op *op);
189 * Store a generic function pointer into an ir operation.
191 void set_generic_function_ptr(ir_op *op, op_func func);
194 * The compute value operation.
195 * This operation evaluates an IR node into a tarval if possible,
196 * returning tarval_bad otherwise.
198 typedef tarval *(*computed_value_func)(ir_node *self);
201 * The equivalent node operation.
202 * This operation returns an equivalent node for the input node.
203 * It does not create new nodes. It is therefore safe to free self
204 * if the node returned is not self.
205 * If a node returns a Tuple we can not just skip it. If the size of the
206 * in array fits, we transform n into a tuple (e.g., possible for Div).
208 typedef ir_node *(*equivalent_node_func)(ir_node *self);
211 * The transform node operation.
212 * This operation tries several [inplace] [optimizing] transformations
213 * and returns an equivalent node.
214 * The difference to equivalent_node() is that these
215 * transformations _do_ generate new nodes, and thus the old node must
216 * not be freed even if the equivalent node isn't the old one.
218 typedef ir_node *(*transform_node_func)(ir_node *self);
221 * The node attribute compare operation.
222 * Compares the nodes attributes of two nodes of identical opcode
223 * and returns 0 if the attributes are identical, 1 if they differ.
225 typedef int (*node_cmp_attr_func)(ir_node *a, ir_node *b);
228 * The reassociation operation.
229 * Called from a walker. Returns non-zero if
230 * a reassociation rule was applied.
231 * The pointer n is set to the newly created node, if some reassociation
234 typedef int (*reassociate_func)(ir_node **n);
237 * The copy attribute operation.
238 * Copy the node attributes from a 'old' node to a 'new' one.
240 typedef void (*copy_attr_func)(const ir_node *old_node, ir_node *new_node);
243 * The get_type operation.
244 * Return the type of the node self.
246 typedef type *(*get_type_func)(ir_node *self);
249 * The verify_node operation.
250 * Return non-zero if the node verification is ok, else 0.
251 * Depending on the node verification settings, may even assert.
253 * @see do_node_verification()
255 typedef int (*verify_node_func)(ir_node *self, ir_graph *irg);
258 * The verify_node operation for Proj(X).
259 * Return non-zero if the node verification is ok, else 0.
260 * Depending on the node verification settings, may even assert.
262 * @see do_node_verification()
264 typedef int (*verify_proj_node_func)(ir_node *self, ir_node *proj);
267 * Reasons to call the dump_node operation:
270 dump_node_opcode_txt, /**< dump the opcode */
271 dump_node_mode_txt, /**< dump the mode */
272 dump_node_nodeattr_txt, /**< dump node attributes to be shown in the label */
273 dump_node_info_txt /**< dump node attributes into info1 */
277 * The dump_node operation.
278 * Writes several informations requested by reason to
281 typedef int (*dump_node_func)(ir_node *self, FILE *F, dump_reason_t reason);
287 computed_value_func computed_value; /**< evaluates a node into a tarval if possible. */
288 equivalent_node_func equivalent_node; /**< optimizes the node by returning an equivalent one. */
289 transform_node_func transform_node; /**< optimizes the node by transforming it. */
290 node_cmp_attr_func node_cmp_attr; /**< compares two node attributes. */
291 reassociate_func reassociate; /**< reassociate a tree */
292 copy_attr_func copy_attr; /**< copy node attributes */
293 get_type_func get_type; /**< return the type of a node */
294 verify_node_func verify_node; /**< verify the node */
295 verify_proj_node_func verify_proj_node; /**< verify the Proj node */
296 dump_node_func dump_node; /**< dump a node */
297 op_func generic; /**< a generic function */
301 * Creates a new ir operation.
303 * @param code the opcode, one of type \c opcode
304 * @param name the printable name of this opcode
305 * @param p whether operations of this opcode are op_pin_state_pinned or floating
306 * @param flags a bitmask of irop_flags describing the behavior of the ir operation
307 * @param opar the parity of this ir operation
308 * @param op_index if the parity is oparity_unary, oparity_binary or oparity_trinary the index
309 * of the left operand
310 * @param ops operations for this opcode, iff NULL default operations are used
311 * @param attr_size attribute size for this ir operation
313 * @return The generated ir operation.
315 * This function can create all standard Firm opcode as well as new ones.
316 * The behavior of new opcode depends on the operations \c ops and the \c flags.
318 ir_op * new_ir_op(opcode code, const char *name, op_pin_state p,
319 unsigned flags, op_arity opar, int op_index, size_t attr_size,
320 const ir_op_ops *ops);
322 /** Returns the ir_op_ops of an ir_op. */
323 const ir_op_ops *get_op_ops(const ir_op *op);
325 #endif /* _IROP_H_ */