X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fir%2Firmode.h;h=0a24a0523c5fff3281c67a040eb879895e39786d;hb=e570f00fb465d212dde403160e97ab45d36d1d7e;hp=33f3ddeaf54f2df3e25279fe9ecf21e1658535d6;hpb=689b2b41ce671c239209d71e2da3fa85ae5471bc;p=libfirm diff --git a/ir/ir/irmode.h b/ir/ir/irmode.h index 33f3ddeaf..0a24a0523 100644 --- a/ir/ir/irmode.h +++ b/ir/ir/irmode.h @@ -1,7 +1,14 @@ -/* Copyright (C) 1998 - 2000 by Universitaet Karlsruhe - * All rights reserved. +/* + * Project: libFIRM + * File name: ir/ir/irmode.h + * Purpose: Data modes of operations. + * Author: Martin Trapp, Christian Schaefer + * Modified by: Goetz Lindenmaier, Mathias Heil + * Created: + * CVS-ID: $Id$ + * Copyright: (c) 1998-2003 Universität Karlsruhe + * Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE. */ -/* $Id$ */ /** * @file irmode.h @@ -18,6 +25,7 @@ * UKA tech report 1999-44 for more information about modes. * */ + #ifndef _IRMODE_H_ #define _IRMODE_H_ @@ -43,6 +51,8 @@ * - int align: byte alignment * - unsigned sign:1: signedness of this mode * - ... more to come + * - modulo_shift specifies for modes of kind irms_int_number + * whether shift applies modulo to value of bits to shift * * SEE ALSO: * The tech report 1999-44 describing FIRM and predefined modes @@ -85,8 +95,8 @@ typedef enum { /* irm is short for `ir mode' */ typedef enum { /* Predefined sorts of modes */ irms_auxiliary, /**< Only for Firm use. Not extensible. (irm_T) */ - irms_control_flow, /**< Marks all control flow modes. Not extensible. (irm_BB, irm_X) */ - irms_memory, /**< Marks the memory mode. Not extensible. (irm_M) */ + irms_control_flow, /**< Marks all control flow modes. Not extensible. (irm_BB, irm_X) */ + irms_memory, /**< Marks the memory mode. Not extensible. (irm_M) */ irms_internal_boolean, /**< Internal boolean representation. Storing to memory impossible, convert first. (irm_b) */ /** user-extensible sorts of modes **/ @@ -117,7 +127,7 @@ typedef enum { irma_ieee754 = 256, /**< Values of the mode are represented according to ieee754 floatingpoint standard. Only legal for modes of sort float_number. */ irma_float_BCD, /**< Values of the mode are represented as binary coded decimals - according to @@@ which standars??? Only legal for modes of + according to @@@ which standards??? Only legal for modes of sort float_number. */ irma_max } mode_arithmetic; @@ -133,6 +143,7 @@ typedef enum { * @param align the byte alignment for an entity of this mode (in bits) * @param sign non-zero if this is a signed mode * @param arithmetic arithmetic operations possible with a mode + * @param modulo_shift Is ignored for modes other than integer. * * This function constructs a new mode given by the parameters. * If the parameters match an already defined mode, this mode is returned @@ -146,9 +157,33 @@ typedef enum { * * @note * It is allowed to construct the default modes. So, a call - * new_ir_mode("Is", irms_int_number, 32, 4, 1) will return mode_Is. + * new_ir_mode("Is", irms_int_number, 32, 4, 1, irma_twos_complement, 32) will return mode_Is. + */ +ir_mode *new_ir_mode(const char *name, mode_sort sort, int bit_size, int align, int sign, mode_arithmetic arithmetic, unsigned int modulo_shift); + +/** + * Creates a new vector mode. + * + * @param name the name of the mode to be created + * @param sort the mode_sort of the mode to be created + * @param bit_size number of bits for one element of this mode + * @param num_of_elem number of elements in this vector mode + * @param align the byte alignment for an entity of this mode (in bits) + * @param sign non-zero if this is a signed mode + * @param arithmetic arithmetic operations possible with a mode + * @param modulo_shift Is ignored for modes other than integer. + * + * This function constructs a new vector mode given by the parameters. + * If the parameters match an already defined mode, this mode is returned. + * If the mode is newly allocated, a new unique mode_code is choosen. + * Also, special value tarvals will be calculated such as null, + * min, max and can be retrieved using the get_mode_* fuctions + * + * @return + * The new mode or NULL on error. */ -ir_mode *new_ir_mode(const char *name, mode_sort sort, int bit_size, int align, int sign, mode_arithmetic arithmetic); +ir_mode *new_ir_vector_mode(const char *name, mode_sort sort, int bit_size, unsigned num_of_elem, int align, int sign, + mode_arithmetic arithmetic, unsigned int modulo_shift ); /** * Checks whether a pointer points to a mode. @@ -184,12 +219,26 @@ int get_mode_size_bytes(const ir_mode *mode); /** Returns the alignment of values of the mode in bytes. */ int get_mode_align(const ir_mode *mode); -/** Returns the signess of a mode */ +/** Returns the signess of a mode. + * + * Returns the signess of a mode: 1 if mode is signed. */ int get_mode_sign (const ir_mode *mode); /** Returns the arithmetic of a mode */ int get_mode_arithmetic (const ir_mode *mode); +/** Attribute modulo shift specifies for modes of kind irms_int_number + * whether shift applies modulo to value of bits to shift. Zero for + * modes that are not integer. + */ +unsigned int get_mode_modulo_shift(const ir_mode *mode); + +/** Attribute vector_elem specifies the number of vector elements of + * a vector mode. For non-vector modes it returns 1 for data and 0 + * for all other modes + */ +unsigned int get_mode_vector_elems(const ir_mode *mode); + /** Returns the stored intermediate information. */ void* get_mode_link(const ir_mode *mode); @@ -304,12 +353,18 @@ ir_mode *get_modeT(void); ir_mode *get_modeANY(void); ir_mode *get_modeBAD(void); +/** Returns the machine specific pointer mode. */ ir_mode *get_modeP_mach(void); -ir_mode *set_modeP_mach(ir_mode *p); /** - Functions to check, whether a modecode is signed, float, int, num, data, - datab or dataM. + * Sets the machine specific pointer mode. + * If not set, the predefined mode mode_P will be used. + */ +void set_modeP_mach(ir_mode *p); + +/** + Functions to check, whether a modecode is signed, float, int, character, + reference, num, numP, data, datab or dataM. For more exact definitions read the corresponding pages in the firm documentation or the following enumeration @@ -320,25 +375,28 @@ ir_mode *set_modeP_mach(ir_mode *p); The set of "int" is defined as: int = {irm_Bs, irm_Bu, irm_Hs, irm_Hu, irm_Is, irm_Iu, irm_Ls, irm_Lu} + The set of "character" is defined as: + character = {irm_C, irm_U} + + The set of "reference" is defined as: + reference = {irm_P} + The set of "num" is defined as: - num = {irm_F, irm_D, irm_E, irm_Bs, irm_Bu, irm_Hs, irm_Hu, - irm_Is, irm_Iu, irm_Ls, irm_Lu} - = {float || int} + num = {float || int} + + The set of "numP" is defined as: + numP = {float || int || reference} The set of "data" is defined as: - data = {irm_F, irm_D, irm_E irm_Bs, irm_Bu, irm_Hs, irm_Hu, - irm_Is, irm_Iu, irm_Ls, irm_Lu, irm_C, irm_U, irm_P} - = {num || irm_C || irm_P} + data = {num || character || reference} The set of "datab" is defined as: - datab = {irm_F, irm_D, irm_E, irm_Bs, irm_Bu, irm_Hs, irm_Hu, - irm_Is, irm_Iu, irm_Ls, irm_Lu, irm_C, irm_U, irm_P, irm_b} - = {data || irm_b } + datab = {data || irm_b } The set of "dataM" is defined as: - dataM = {irm_F, irm_D, irm_E, irm_Bs, irm_Bu, irm_Hs, irm_Hu, - irm_Is, irm_Iu, irm_Ls, irm_Lu, irm_C, irm_U, irm_P, irm_M} - = {data || irm_M} + dataM = {data || irm_M} + + Vector "int" and "float" are defined by the arithmetic and vector_elem > 1. */ /*@}*/ /* Test for a certain class of modes. */ @@ -348,9 +406,12 @@ int mode_is_int (const ir_mode *mode); int mode_is_character (const ir_mode *mode); int mode_is_reference (const ir_mode *mode); int mode_is_num (const ir_mode *mode); +int mode_is_numP (const ir_mode *mode); int mode_is_data (const ir_mode *mode); int mode_is_datab (const ir_mode *mode); int mode_is_dataM (const ir_mode *mode); +int mode_is_float_vector (const ir_mode *mode); +int mode_is_int_vector (const ir_mode *mode); /** Returns true if sm can be converted to lm without loss according to firm definiton */ @@ -359,4 +420,7 @@ int smaller_mode(const ir_mode *sm, const ir_mode *lm); /** mode module initialization, call once before use of any other function **/ void init_mode (void); +/** mode module finalization. frees all memory. */ +void finish_mode(void); + #endif /* _IRMODE_H_ */