X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Ftr%2Ftype.h;h=464944c67aca95961fbf5b0bb5b2caaadd803202;hb=217c4f3a0ffc115825dbebb2270ab1d20c246e97;hp=1b796125f52c60072b6ae6494083aa4f3b2f1b0a;hpb=0e0b801c71725c2ec5fe0d24eb29ee2a974de321;p=libfirm diff --git a/ir/tr/type.h b/ir/tr/type.h index 1b796125f..464944c67 100644 --- a/ir/tr/type.h +++ b/ir/tr/type.h @@ -44,7 +44,6 @@ # include "irmode.h" # include "dbginfo.h" - /* to resolve recursion between entity.h and type.h */ #ifndef _ENTITY_TYPEDEF_ #define _ENTITY_TYPEDEF_ @@ -56,6 +55,8 @@ typedef struct entity entity; typedef struct ir_node ir_node; #endif +# include "tr_inheritance.h" + /** * An abstract data type to represent types. * @@ -148,6 +149,73 @@ ident* get_type_ident(const type *tp); void set_type_ident(type *tp, ident* id); const char* get_type_name(const type *tp); +/** This enumeration flags the visibility of entities and types. + * + * This is necessary for partial compilation. + * We rely on the ordering of the flags. + */ +typedef enum { + visibility_local, /**< The entity is only visible locally. This is the default for + entities. + The type is only visible locally. All instances are allocated + locally, and no pointer to entities of this type are passed + out of this compilation unit. */ + visibility_external_visible, /**< The entity is visible to other external program parts, but + it is defined here. It may not be optimized away. The entity must + be static_allocated. + For types: entities of this type can be accessed externaly. No + instances of this type are allocated externally. */ + visibility_external_allocated /**< The entity is defined and allocated externally. This compilation + must not allocate memory for this entity. The entity must + be static_allocated. This can also be an external defined + method. + For types: entities of this type are allocated and accessed from + external code. Default for types. */ +} visibility; + +/** The visibility of a type. + * + * The visibility of a type indicates, whether entities of this type + * are accessed or allocated in external code. + * + * An entity of a type is allocated in external code, if the external + * code declares a variable of this type, or dynamically allocates + * an entity of this type. If the external code declares a (compound) + * type, that contains entities of this type, the visibility also + * must be external_allocated. + * + * The visibility must be higher than that of all entities, if the + * type is a compound. Here it is questionable, what happens with + * static entities. If these are accessed external by direct reference, + * (a static call to a method, that is also in the dispatch table) + * it should not affect the visibility of the type. + * + * + * @@@ Do we need a visibility for types? + * I change the layout of types radically when doing type splitting. + * I need to know, which fields of classes are accessed in the rts, + * e.g., [_length. I may not move [_length to the split part. + * The layout though, is a property of the type. + * + * One could also think of changing the mode of a type ... + * + * But, we could also output macros to access the fields, e.g., + * ACCESS_[_length (X) X->length // conventional + * ACCESS_[_length (X) X->_split_ref->length // with type splitting + * + * For now I implement this function, that returns the visibility + * based on the visibility of the entities of a compound ... + * + * This function returns visibility_external_visible if one or more + * entities of a compound type have visibility_external_visible. + * Entities of types are never visibility_external_allocated (right?). + * Else returns visibility_local. + */ +visibility get_type_visibility (const type *tp); +void set_type_visibility (type *tp, visibility v); + + + /** The state of the type layout. */ typedef enum { layout_undefined, /**< The layout of this type is not defined. @@ -208,17 +276,21 @@ void set_type_size_bytes(type *tp, int size); */ void set_type_size_bits(type *tp, int size); -/** Returns the alignment of a type in bytes, returns -1 if the alignment is NOT - * a byte size, ie not dividable by 8. Calls get_type_alignment_bits(). */ +/** Returns the alignment of a type in bytes. + * + * Returns -1 if the alignment is NOT + * a byte size, i.e. not dividable by 8. Calls get_type_alignment_bits(). */ int get_type_alignment_bytes(type *tp); -/** Returns the alignment of a type in bits. If the alignment of a type is - * not set, it is calculated here according to the following rules: - * 1.) if a type has a mode, the alignment is the mode size. - * 2.) compound types have the alignment of it's biggest member. - * 3.) array types have the alignment of its element type. - * 4.) method types return 0 here. - * 5.) all other types return 8 here (i.e. aligned at byte). +/** Returns the alignment of a type in bits. + * + * If the alignment of a type is + * not set, it is calculated here according to the following rules: + * 1.) if a type has a mode, the alignment is the mode size. + * 2.) compound types have the alignment of it's biggest member. + * 3.) array types have the alignment of its element type. + * 4.) method types return 0 here. + * 5.) all other types return 8 here (i.e. aligned at byte). */ int get_type_alignment_bits(type *tp); @@ -394,28 +466,31 @@ entity *get_class_member (const type *clss, int pos); int get_class_member_index(type *clss, entity *mem); /** Finds the member with name 'name'. If several members with the same - name returns one of them. Returns NULL if no member found. */ + * name returns one of them. Returns NULL if no member found. */ entity *get_class_member_by_name(type *clss, ident *name); /** Overwrites the member at position pos, 0 <= pos < n_member with - the passed entity. */ + * the passed entity. */ void set_class_member (type *clss, entity *member, int pos); /** Replaces complete member list in class type by the list passed. - Copies the list passed. This function is necessary to reduce the number of members. - members is an array of entities, num the size of this array. Sets all - owners of the members passed to clss. */ + * + * Copies the list passed. This function is necessary to reduce the number of members. + * members is an array of entities, num the size of this array. Sets all + * owners of the members passed to clss. */ void set_class_members (type *clss, entity *members[], int arity); /** Finds member in the list of members and removes it. - Shrinks the member list, so iterate from the end!!! - Does not deallocate the entity. */ + * + * Shrinks the member list, so iterate from the end!!! + * Does not deallocate the entity. */ void remove_class_member(type *clss, entity *member); /** Adds subtype as subtype to clss. - Checks whether clss is a supertype of subtype. If not - adds also clss as supertype to subtype. */ + * + * Checks whether clss is a supertype of subtype. If not + * adds also clss as supertype to subtype. */ void add_class_subtype (type *clss, type *subtype); /** Returns the number of subtypes */ @@ -424,9 +499,16 @@ int get_class_n_subtypes (const type *clss); /** Gets the subtype at position pos, 0 <= pos < n_subtype. */ type *get_class_subtype (type *clss, int pos); +/** Returns the index to access subclass as subtype of class. + * + * If subclass is no direct subtype of class returns -1. + */ +int get_class_subtype_index(type *clss, const type *subclass); + /** Sets the subtype at position pos, 0 <= pos < n_subtype. - Does not set the corresponding supertype relation for subtype: this might - be a different position! */ + * + * Does not set the corresponding supertype relation for subtype: this might + * be a different position! */ void set_class_subtype (type *clss, type *subtype, int pos); /** Finds subtype in the list of subtypes and removes it */ @@ -434,22 +516,27 @@ void remove_class_subtype(type *clss, type *subtype); /** Adds supertype as supertype to class. - Checks whether clss is a subtype of supertype. If not - adds also clss as subtype to supertype. */ + * + * Checks whether clss is a subtype of supertype. If not + * adds also clss as subtype to supertype. */ void add_class_supertype (type *clss, type *supertype); /** Returns the number of supertypes */ int get_class_n_supertypes (const type *clss); -/** Returns the index of an supertype in a type. */ +/** Returns the index to access superclass as supertype of class. + * + * If superclass is no direct supertype of class returns -1. + */ int get_class_supertype_index(type *clss, type *super_clss); /** Gets the supertype at position pos, 0 <= pos < n_supertype. */ type *get_class_supertype (type *clss, int pos); -/** Sets the supertype at position pos, 0 <= pos < n_subtype. - Does not set the corresponding subtype relation for supertype: this might - be a different position! */ +/** Sets the supertype at position pos, 0 <= pos < n_supertype. + * + * Does not set the corresponding subtype relation for supertype: this might + * be at a different position! */ void set_class_supertype (type *clss, type *supertype, int pos); /** Finds supertype in the list of supertypes and removes it */ @@ -486,9 +573,6 @@ int get_class_dfn (const type *clss); /** Returns true if a type is a class type. */ int is_Class_type(const type *clss); -/** Returns true if low is subclass of high. */ -int is_subclass_of(type *low, type *high); - /** * @page struct_type Representation of a struct type * @@ -784,13 +868,25 @@ ir_node * get_array_upper_bound (const type *array, int dimension); /** Works only if bound is Const node with tarval that can be converted to long. */ long get_array_upper_bound_int (const type *array, int dimension); +/** Sets an array dimension to a specific order. */ void set_array_order (type *array, int dimension, int order); + +/** Returns the order of an array dimension. */ int get_array_order (const type *array, int dimension); +/** Find the array dimension that is placed at order ord. */ +int find_array_dimension(const type *array, int order); + +/** Sets the array element type. */ void set_array_element_type (type *array, type *tp); + +/** Gets the array element type. */ type *get_array_element_type (type *array); +/** Sets the array element entity. */ void set_array_element_entity (type *array, entity *ent); + +/** Get the array element entity. */ entity *get_array_element_entity (const type *array); /** Returns true if a type is an array type. */