2 * This file is part of libFirm.
3 * Copyright (C) 2012 University of Karlsruhe.
8 * @brief Reverse edges that reference types/entities.
9 * @author Goetz Lindenmaier
12 #ifndef FIRM_ANA_TROUTS_H
13 #define FIRM_ANA_TROUTS_H
15 #include "firm_types.h"
22 * @defgroup trouts Reverse Type Edges
23 * Trouts list all uses of types and entities.
24 * Each type gets a list of all Alloc nodes allocating it.
25 * Each entity gets two lists:
26 * - one containing all accesses (Load, (Call), Store),
27 * - and one containing all uses to get a reference (Sel, SymConst).
31 /** Returns number of Load/Store nodes that possibly access entity @p entity. */
32 FIRM_API size_t get_entity_n_accesses(const ir_entity *entity);
33 /** Returns Load/Store node number @p pos that possibly accesses entity @p entity. */
34 FIRM_API ir_node *get_entity_access(const ir_entity *entity, size_t pos);
36 /** Returns number of references to entity @p entity, in form of SymConst/Sel,
37 * including references from constant entities and the like. */
38 FIRM_API size_t get_entity_n_references(const ir_entity *entity);
39 /** Returns reference number @p pos of references to an entity, in form of
40 * SymConst/Sel, including references from constants. */
41 FIRM_API ir_node *get_entity_reference(const ir_entity *entity, size_t pos);
43 /** Returns number of Alloc nodes that create an instance of type @p type. */
44 FIRM_API size_t get_type_n_allocs(const ir_type *type);
45 /** Returns Alloc node number @p pos that create an instance of type @p type. */
46 FIRM_API ir_node *get_type_alloc(const ir_type *type, size_t pos);
48 /** Returns number of pointertypes that point to type @p type. */
49 FIRM_API size_t get_type_n_pointertypes_to(const ir_type *type);
50 /** Returns pointer type number @p pos that points to type @p type. */
51 FIRM_API ir_type *get_type_pointertype_to(const ir_type *type, size_t pos);
53 /** Returns number of array types with element type @p type. */
54 FIRM_API size_t get_type_n_arraytypes_of(const ir_type *type);
55 /** Returns array type number @p pos with element type @p type. */
56 FIRM_API ir_type *get_type_arraytype_of(const ir_type *type, size_t pos);
58 /** Computes the outs of types and entities.
60 * Collects all reference from irnodes to types or entities in the
61 * corresponding types/entities. Further reverses references between
64 * Annotates the following nodes:
65 * Alloc --> get_Alloc_type()
66 * Cast --> get_Cast_type()
67 * Sel --> get_Sel_entity()
68 * SymConst --> get_SymConst_entity()
69 * Load(addr) --> get_addr_entity() \ ent von SymConst, oder falls Sel: ent von
70 * Store(addr) --> get_addr_entity() / outermost im compound. Ansonsten: nirgends.
71 * d.h. wir bekommen die array Elementzugriffe
72 * an die jack array Klasse annotiert.
73 * Call(Sel) --> get_Sel_entity() // ev. Tabellenzugriff --> Load.
75 * type --> pointer type refering to this type.
76 * type --> entity of this type. @@@ to be implemented.
78 * Sets trout state to outs_consistent.
80 FIRM_API void compute_trouts(void);
82 /** Frees trout data. */
83 FIRM_API void free_trouts(void);