X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fir%2Firgraph.h;h=78a9cde7854ac856300606432077ae0e1aa06e57;hb=65faa2bb5df86c0b6e02d9d779e06956ccd1ff9f;hp=8a690e26315f7cb5de1d1ee26c28780fdac06a9e;hpb=328ae18da3e796f4f9fda2aba629cc34e2849ed7;p=libfirm diff --git a/ir/ir/irgraph.h b/ir/ir/irgraph.h index 8a690e263..78a9cde78 100644 --- a/ir/ir/irgraph.h +++ b/ir/ir/irgraph.h @@ -1,18 +1,30 @@ -/* Copyright (C) 1998 - 2000 by Universitaet Karlsruhe -** All rights reserved. -** -** Authors: Martin Trapp, Christian Schaefer -** -** irgraph.h: ir graph construction -*/ +/* + * Project: libFIRM + * File name: ir/ir/irgraph.c + * Purpose: Entry point to the representation of procedure code. + * Author: Martin Trapp, Christian Schaefer + * Modified by: Goetz Lindenmaier + * Created: + * CVS-ID: $Id$ + * Copyright: (c) 1998-2003 Universität Karlsruhe + * Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE. + */ + +/** + * @file irgraph.h + * + * ir graph construction. + * + * @author Martin Trapp, Christian Schaefer + */ -/* $Id$ */ #include "irop.h" # ifndef _IRGRAPH_H_ # define _IRGRAPH_H_ # include "tv.h" +# include "entity.h" /* to resolve recursion between irnode.h and irgraph.h */ #ifndef _IR_NODE_TYPEDEF_ @@ -26,12 +38,11 @@ typedef struct ir_node ir_node; typedef struct ir_graph ir_graph; #endif -/***** irgraph/irgraph +/** * * NAME Datastructure that holds central information about a procedure * - * NOTE - ** ir_graph *new_ir_graph (entity *ent, int params); + * ir_graph *new_ir_graph (entity *ent, int params); * ------------------------------------------------- * * This constructor generates the basic infrastructure needed to @@ -60,136 +71,293 @@ typedef struct ir_graph ir_graph; * datastructure is used to build the Phi nodes and removed after * completion of the graph. There is no path from end to start in the * graph after calling ir_graph. - * FIELDS - * pinned set to "pinned" if no global cse was performed on the graph. - * set to "floats" if global cse was performed (and during construction: + * op_pin_state_pinned set to "op_pin_state_pinned" if no global cse was performed on the graph. + * set to "op_pin_state_floats" if global cse was performed (and during construction: * did actually change something). Code placement is necessary. - * SOURCE */ -/* Global variable holding the current_ir_graph. This global variable - is used by the ir construction interface in ircons and by the - optimizations. */ +/** Global variable holding the current ir graph. + * + * This global variable is used by the ir construction + * interface in ircons and by the optimizations. + */ extern ir_graph *current_ir_graph; -/* Create a new ir graph to built ir for a procedure. - ent is the entity representing this procedure, i.e., the type of the - entity must be of a method type. The constructor automatically sets the - field irg of the entity as well as current_ir_graph to the new ir graph. - n_loc is the number of local variables in this procedure including - the procedure parameters. - The state of the ir graph is: phase_building, pinned, no_outs. */ +ir_graph *get_current_ir_graph(void); +void set_current_ir_graph(ir_graph *graph); + +/** This flag indicate the current view. The behaviour of some methods + * (get_irn_*, set_irn_*) is influenced by this flag. */ +int get_interprocedural_view(void); +void set_interprocedural_view(int state); + +/** Create a new ir graph to built ir for a procedure. + * + * ent is the entity representing this procedure, i.e., the type of the + * entity must be of a method type. The constructor automatically sets the + * field irg of the entity as well as current_ir_graph to the new ir graph. + * n_loc is the number of local variables in this procedure including + * the procedure parameters. + * The constructor adds the new irgraph to the list in ir_prog. + * The state of the ir graph is: phase_building, op_pin_state_pinned, outs_none. */ ir_graph *new_ir_graph (entity *ent, int n_loc); -/* Frees the passed irgraph. - Deallocates all nodes in this graph and the ir_graph structure. - Sets the field irgraph in the corresponding entity to NULL. - Does not remove the irgraph from the list in irprog (requires - inefficient search, call remove_irp_irg by hand). - Does not free types, entities or modes that are used only by this - graph, nor the entity standing for this graph. */ +/** Frees the passed irgraph. + * Deallocates all nodes in this graph and the ir_graph structure. + * Sets the field irgraph in the corresponding entity to NULL. + * Does not remove the irgraph from the list in irprog (requires + * inefficient search, call remove_irp_irg by hand). + * Does not free types, entities or modes that are used only by this + * graph, nor the entity standing for this graph. + */ void free_ir_graph (ir_graph *irg); -/* access routines for all ir_graph attributes */ -ir_node *get_irg_start_block (ir_graph *irg); +/* --- access routines for all ir_graph attributes --- */ + +/** + * Checks whether a pointer points to a ir graph. + * + * @param thing an arbitrary pointer + * + * @return + * true if the thing is a ir graph, else false + */ +int is_ir_graph(const void *thing); + +/* #define get_irg_entity get_irg_ent */ +/* #define set_irg_entity set_irg_ent */ +entity *get_irg_entity (const ir_graph *irg); +void set_irg_entity (ir_graph *irg, entity *ent); + +type *get_irg_frame_type (const ir_graph *irg); +void set_irg_frame_type (ir_graph *irg, type *ftp); +/* To test for a frame type. O(#irgs) if ftp is class type. */ +int is_frame_type (const type *ftp); + +ir_node *get_irg_start_block (const ir_graph *irg); void set_irg_start_block (ir_graph *irg, ir_node *node); -ir_node *get_irg_start (ir_graph *irg); +ir_node *get_irg_start (const ir_graph *irg); void set_irg_start (ir_graph *irg, ir_node *node); -ir_node *get_irg_end_block (ir_graph *irg); +ir_node *get_irg_end_block (const ir_graph *irg); void set_irg_end_block (ir_graph *irg, ir_node *node); -ir_node *get_irg_end (ir_graph *irg); +ir_node *get_irg_end (const ir_graph *irg); void set_irg_end (ir_graph *irg, ir_node *node); -ir_node *get_irg_cstore (ir_graph *irg); +/* The fields end_reg and end_except contain the end nodes of the + interprocedural view. If the view is not constructed they contain + the nomal end node. */ +ir_node *get_irg_end_reg (const ir_graph *irg); +void set_irg_end_reg (ir_graph *irg, ir_node *node); + +ir_node *get_irg_end_except (const ir_graph *irg); +void set_irg_end_except (ir_graph *irg, ir_node *node); + + +/* @@@ oblivious, no more supported. */ +ir_node *get_irg_cstore (const ir_graph *irg); void set_irg_cstore (ir_graph *irg, ir_node *node); +/* end oblivious */ -ir_node *get_irg_frame (ir_graph *irg); +/** Returns the node that represents the frame pointer. */ +ir_node *get_irg_frame (const ir_graph *irg); +/** Sets the node that represents the frame pointer. */ void set_irg_frame (ir_graph *irg, ir_node *node); -ir_node *get_irg_globals (ir_graph *irg); +/** Returns the node that represents the global pointer. */ +ir_node *get_irg_globals (const ir_graph *irg); +/** Sets the node that represents the global pointer. */ void set_irg_globals (ir_graph *irg, ir_node *node); -ir_node *get_irg_args (ir_graph *irg); -void set_irg_args (ir_graph *irg, ir_node *node); +/** Returns the node that represents the initial memory. */ +ir_node *get_irg_initial_mem (const ir_graph *irg); +/** Sets the node that represents the initial memory. */ +void set_irg_initial_mem (ir_graph *irg, ir_node *node); -/* Use new_Bad() instead!! */ -ir_node *get_irg_bad (ir_graph *irg); -void set_irg_bad (ir_graph *irg, ir_node *node); +/** Returns the node that represents the argument pointer. */ +ir_node *get_irg_args (const ir_graph *irg); +/** Sets the node that represents the argument pointer. */ +void set_irg_args (ir_graph *irg, ir_node *node); -ir_node *get_irg_current_block (ir_graph *irg); +/** Returns the current block of a graph. */ +ir_node *get_irg_current_block (const ir_graph *irg); +/** Sets the current block of a graph. */ void set_irg_current_block (ir_graph *irg, ir_node *node); -entity *get_irg_ent (ir_graph *irg); -void set_irg_ent (ir_graph *irg, entity *ent); - -type *get_irg_frame_type (ir_graph *irg); -void set_irg_frame_type (ir_graph *irg, type *ftp); +/** Returns the Bad node. Use new_Bad() instead!! */ +ir_node *get_irg_bad (const ir_graph *irg); +void set_irg_bad (ir_graph *irg, ir_node *node); -/* Use not encouraged, internal of Phi construction algorithm. */ -int get_irg_n_loc (ir_graph *irg); -void set_irg_n_loc (ir_graph *irg, int n_loc); +/** Returns the number of value numbers of a graph. */ +int get_irg_n_locs (ir_graph *irg); +/** Returns the graph number. */ +long get_irg_graph_nr(ir_graph *irg); /********************************************************************************/ /* States of an ir_graph. */ /********************************************************************************/ -/* An ir_graph can have different states. These states represent the analysis +/* information associated with the graph. Optimizations invalidate these states. */ -/* state: phase - values: phase_building, phase_high, phase_low - The irg is in phase_building during construction of the irgraph. - It is in phase_high after construction. All nodes are allowed. - To get the irgraph into phase_low all Sel nodes must be removed - and replaced by explicit address computations. @@@ More conditions? */ +/** The states of an ir graph. + * + * state phase values: phase_building, phase_high, phase_low. + * + * The graph is in phase_building during construction of the irgraph. + * The construction is finished by a call to finalize_cons(). + * + * Finalize_cons() sets the state to phase_high. All Firm nodes are + * allowed. + * + * To get the irgraph into phase_low all Sel nodes must be removed and + * replaced by explicit address computations. SymConst size and + * typetag nodes must be removed (@@@ really?). Initialization of + * memory allocated by Alloc must be explicit. @@@ More conditions? + * + */ typedef enum { phase_building, phase_high, phase_low } irg_phase_state; -irg_phase_state get_irg_phase_state (ir_graph *irg); + +irg_phase_state get_irg_phase_state (const ir_graph *irg); void set_irg_phase_low(ir_graph *irg); -/* state: pinned - The graph is "pinned" if all nodes are accosiated with a basic block. - It is in state "floats" if nodes are in arbitrary blocks. In state - "floats" the block predecessor is set in all nodes, but this can be an +/** state: op_pin_state_pinned + The graph is "op_pin_state_pinned" if all nodes are associated with a basic block. + It is in state "op_pin_state_floats" if nodes are in arbitrary blocks. In state + "op_pin_state_floats" the block predecessor is set in all nodes, but this can be an invalid block, i.e., the block is not a dominator of all the uses of the node. - The enum op_pinned is defined in irop.h. */ -op_pinned get_irg_pinned (ir_graph *irg); + The enum op_pin_state is defined in irop.h. */ +op_pin_state get_irg_pinned (const ir_graph *irg); -/* state: outs_state +/** state: outs_state Outs are the back edges or def-use edges. - Values: no_outs, outs_consistent, outs_inconsistent - no_outs: outs are not computed, no memory is allocated. + Values: outs_none, outs_consistent, outs_inconsistent + outs_none: outs are not computed, no memory is allocated. outs_consistent: outs are computed and correct, outs_inconsistent: outs have been computed, memory is still allocated, but the graph has been changed since. */ typedef enum { - no_outs, + outs_none, outs_consistent, outs_inconsistent } irg_outs_state; -irg_outs_state get_irg_outs_state(ir_graph *irg); +irg_outs_state get_irg_outs_state(const ir_graph *irg); void set_irg_outs_inconsistent(ir_graph *irg); +/** state: dom_state + Signals the state of the dominator infomation. + Values: dom_none, dom_consistent, dom_inconsistent + dom_none: doms are not computed, no memory is allocated. The access routines + may not be used. + dom_consistent: dominator information is computed and correct, + dom_inconsistent: dominator information is computed, memory is still allocated, + but the graph has been changed since. Using the access routines is possible, + obtained information may be incorrect. */ +typedef enum { + dom_none, /**< doms are not computed, no memory is allocated */ + dom_consistent, /**< dominator information is computed and correct */ + dom_inconsistent /**< dominator information is computed but the graph has been changed since */ +} irg_dom_state; +irg_dom_state get_irg_dom_state(const ir_graph *irg); +void set_irg_dom_inconsistent(ir_graph *irg); + +/** state: loopinfo_state + Loop information describes the loops within the control and + data flow of the procedure. */ +typedef enum { + loopinfo_none = 0, /**< No loop information is constructed. Default. */ + loopinfo_constructed = 1, /**< Some kind of loop information is constructed. */ + loopinfo_valid = 2, /**< Loop information is valid. */ + loopinfo_cf = 4, /**< Loop information constructed for control flow only. */ + loopinfo_inter = 8, /**< Loop information for interprocedural view. */ + + loopinfo_for_firmjni = 16, /**< A hack for firmjni: all enums must differ as they + are used in a switch. */ + + /** IntRAprocedural loop information constructed and valid. */ + loopinfo_consistent = loopinfo_constructed | loopinfo_valid, + /** IntRAprocedural loop information constructed and invalid. */ + loopinfo_inconsistent = loopinfo_constructed | loopinfo_for_firmjni, + + /** IntERprocedural loop information constructed and valid. */ + loopinfo_ip_consistent = loopinfo_constructed | loopinfo_inter | loopinfo_valid, + /** IntERprocedural loop information constructed and invalid. */ + loopinfo_ip_inconsistent = loopinfo_constructed | loopinfo_inter, + + /** IntRAprocedural control loop information constructed and valid. */ + loopinfo_cf_consistent = loopinfo_constructed | loopinfo_cf | loopinfo_valid, + /** IntRAprocedural control loop information constructed and invalid. */ + loopinfo_cf_inconsistent = loopinfo_constructed | loopinfo_cf, + + /** IntERprocedural control loop information constructed and valid. */ + loopinfo_cf_ip_consistent = loopinfo_constructed | loopinfo_cf | loopinfo_inter | loopinfo_valid, + /** IntERprocedural control loop information constructed and invalid. */ + loopinfo_cf_ip_inconsistent = loopinfo_constructed | loopinfo_cf | loopinfo_inter +} irg_loopinfo_state; + +irg_loopinfo_state get_irg_loopinfo_state(const ir_graph *irg); +void set_irg_loopinfo_state(ir_graph *irg, irg_loopinfo_state s); +/** Sets the loopinformation state to the appropriate inconsistent state. + If state is 'none' does not change. */ +void set_irg_loopinfo_inconsistent(ir_graph *irg); + +/** state: callee_information_state + * Call nodes contain a list of possible callees. This list must be + * computed by an analysis. + * + * It's strange that this state is administered on irg basis, as the + * information must be computed for the whole program, or not? + */ +typedef enum { + irg_callee_info_none, + irg_callee_info_consistent, + irg_callee_info_inconsistent +} irg_callee_info_state; +irg_callee_info_state get_irg_callee_info_state(const ir_graph *irg); +void set_irg_callee_info_state(ir_graph *irg, irg_callee_info_state s); + +/** property: + * Tells how to handle an ir graph in inlineing. + */ +typedef enum { + irg_inline_any, /**< No restriction on inlineing. Default. */ + irg_inline_forbidden, /**< The graph may not be inlined. */ + irg_inline_recomended, /**< The graph should be inlined. */ + irg_inline_forced /**< The graph must be inlined. */ +} irg_inline_property; +/** Returns the inline property of a graph. */ +irg_inline_property get_irg_inline_property(const ir_graph *irg); +/** Sets the inline property of a graph. */ +void set_irg_inline_property(ir_graph *irg, irg_inline_property s); + +/** A void * field to link arbritary information to the node. */ +void set_irg_link (ir_graph *irg, void *thing); +void *get_irg_link (const ir_graph *irg); /* increments visited by one */ -void inc_irg_visited(ir_graph *irg); -unsigned long get_irg_visited (ir_graph *irg); -void set_irg_visited(ir_graph *irg, unsigned long i); +void inc_irg_visited (ir_graph *irg); +unsigned long get_irg_visited (const ir_graph *irg); +void set_irg_visited (ir_graph *irg, unsigned long i); +unsigned long get_max_irg_visited (void); +void set_max_irg_visited (int val); +unsigned long inc_max_irg_visited (void); /* increments block_visited by one */ -void inc_irg_block_visited(ir_graph *irg); -unsigned long get_irg_block_visited (ir_graph *irg); -void set_irg_block_visited(ir_graph *irg, unsigned long i); -/*****/ +void inc_irg_block_visited (ir_graph *irg); +unsigned long get_irg_block_visited (const ir_graph *irg); +void set_irg_block_visited (ir_graph *irg, unsigned long i); + +/* is irg a pseudo graph for analysis? */ +int is_pseudo_ir_graph(ir_graph *irg); # endif /* _IRGRAPH_H_ */