121 lines
3.6 KiB
C
121 lines
3.6 KiB
C
/*
|
|
flow.h
|
|
|
|
Flow graph analysis.
|
|
|
|
Copyright (C) 2012 Bill Currie <bill@taniwha.org>
|
|
|
|
Author: Bill Currie <bill@taniwha.org>
|
|
Date: 2012/10/30
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License
|
|
as published by the Free Software Foundation; either version 2
|
|
of the License, or (at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
|
|
See the GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to:
|
|
|
|
Free Software Foundation, Inc.
|
|
59 Temple Place - Suite 330
|
|
Boston, MA 02111-1307, USA
|
|
|
|
*/
|
|
#ifndef flow_h
|
|
#define flow_h
|
|
|
|
/** \defgroup qfcc_flow Flow graph analysis
|
|
\ingroup qfcc
|
|
*/
|
|
///@{
|
|
|
|
struct function_s;
|
|
struct sblock_s;
|
|
struct statement_s;
|
|
struct operand_s;
|
|
|
|
typedef struct flowvar_s {
|
|
struct flowvar_s *next; ///< for ALLOC
|
|
struct set_s *use; ///< set of statements that use this var
|
|
struct set_s *define; ///< set of statements that define this var
|
|
struct operand_s *op; ///< an operand using this var
|
|
int number; ///< number of variable in func's ref list
|
|
int flowaddr; ///< psuedo address for local and temp vars
|
|
} flowvar_t;
|
|
|
|
typedef struct flowloop_s {
|
|
struct flowloop_s *next;
|
|
unsigned head;
|
|
struct set_s *nodes;
|
|
} flowloop_t;
|
|
|
|
typedef struct flowedge_s {
|
|
unsigned tail;
|
|
unsigned head;
|
|
} flowedge_t;
|
|
|
|
/** Represent a node in a flow graph.
|
|
*/
|
|
typedef struct flownode_s {
|
|
struct flownode_s *next; ///< for ALLOC
|
|
int id; ///< index of this node in the flow graph
|
|
int dfn; ///< depth-first ordering of this node
|
|
struct flowgraph_s *graph; ///< graph owning this node
|
|
struct set_s *predecessors; ///< predecessors of this node
|
|
struct set_s *successors; ///< successors of this node
|
|
struct set_s *edges; ///< edges leaving this node to successor nodes
|
|
struct set_s *dom; ///< dominating nodes
|
|
struct set_s *global_vars; ///< global vars used by function
|
|
struct {
|
|
struct set_s *gen;
|
|
struct set_s *kill;
|
|
struct set_s *in;
|
|
struct set_s *out;
|
|
} reaching_defs;
|
|
struct {
|
|
struct set_s *use;
|
|
struct set_s *def;
|
|
struct set_s *in;
|
|
struct set_s *out;
|
|
} live_vars;
|
|
struct sblock_s *sblock; ///< original statement block
|
|
struct dag_s *dag; ///< dag for this node
|
|
} flownode_t;
|
|
|
|
typedef struct flowgraph_s {
|
|
struct flowgraph_s *next; ///< for ALLOC
|
|
struct function_s *func; ///< function to which this graph is attached
|
|
flownode_t **nodes; ///< array of nodes in the graph
|
|
int num_nodes; ///< number of real nodes in the graph
|
|
flowedge_t *edges; ///< array of all edges in the graph
|
|
int num_edges;
|
|
struct set_s *dfst; ///< edges in the depth-first search tree
|
|
int *depth_first; ///< depth-first order of nodes
|
|
flowloop_t *loops; ///< linked list of natural loops
|
|
} flowgraph_t;
|
|
|
|
flowvar_t *flow_get_var (struct operand_s *op);
|
|
|
|
#define FLOW_OPERANDS 5
|
|
void flow_analyze_statement (struct statement_s *s, struct set_s *use,
|
|
struct set_s *def, struct set_s *kill,
|
|
struct operand_s *operands[FLOW_OPERANDS]);
|
|
|
|
void flow_data_flow (struct function_s *func);
|
|
|
|
void dump_dot_flow (void *g, const char *filename);
|
|
void dump_dot_flow_dags (void *g, const char *filename);
|
|
void dump_dot_flow_live (void *g, const char *filename);
|
|
void dump_dot_flow_reaching (void *g, const char *filename);
|
|
void dump_dot_flow_statements (void *g, const char *filename);
|
|
|
|
///@}
|
|
|
|
#endif//flow_h
|