cprover
accelerate.h
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1 /*******************************************************************\
2 
3 Module: Loop Acceleration
4 
5 Author: Matt Lewis
6 
7 \*******************************************************************/
8 
11 
12 #ifndef CPROVER_GOTO_INSTRUMENT_ACCELERATE_ACCELERATE_H
13 #define CPROVER_GOTO_INSTRUMENT_ACCELERATE_ACCELERATE_H
14 
15 #include <util/namespace.h>
16 #include <util/expr.h>
17 #include <util/message.h>
18 
19 #include <analyses/natural_loops.h>
20 
22 
23 #include "path.h"
24 #include "accelerator.h"
25 #include "trace_automaton.h"
26 #include "subsumed.h"
27 #include "scratch_program.h"
28 #include "acceleration_utils.h"
29 
31 {
32 public:
34  goto_programt &_program,
35  goto_modelt &_goto_model,
37  bool _use_z3)
39  program(_program),
40  goto_functions(_goto_model.goto_functions),
41  symbol_table(_goto_model.symbol_table),
42  ns(_goto_model.symbol_table),
44  use_z3(_use_z3)
45  {
47  }
48 
49  int accelerate_loop(goto_programt::targett &loop_header);
50  int accelerate_loops();
51 
52  bool accelerate_path(patht &path, path_acceleratort &accelerator);
53 
54  void restrict_traces();
55 
56  static const int accelerate_limit = -1;
57 
58 protected:
60 
61  void find_paths(
62  goto_programt::targett &loop_header,
63  pathst &loop_paths,
64  pathst &exit_paths,
65  goto_programt::targett &back_jump);
66 
67  void extend_path(
69  goto_programt::targett &loop_header,
71  patht &prefix,
72  pathst &loop_paths,
73  pathst &exit_paths,
74  goto_programt::targett &back_jump);
75 
77 
79  goto_programt::targett &loop_header,
80  goto_programt::targett &back_jump,
81  goto_programt &looping_path,
82  patht &inserted_path);
83  void insert_accelerator(
84  goto_programt::targett &loop_header,
85  goto_programt::targett &back_jump,
86  path_acceleratort &accelerator,
87  subsumed_patht &subsumed_path);
88 
89  void set_dirty_vars(path_acceleratort &accelerator);
90  void add_dirty_checks();
91  bool is_underapproximate(path_acceleratort &accelerator);
92 
93  void make_overflow_loc(
94  goto_programt::targett loop_header,
95  goto_programt::targett &loop_end,
96  goto_programt::targett &overflow_loc);
97 
98  void insert_automaton(trace_automatont &automaton);
100  trace_automatont::sym_mapt::iterator p,
101  trace_automatont::sym_mapt::iterator end,
102  state_sett &accept_states,
103  symbol_exprt state,
104  symbol_exprt next_state,
105  scratch_programt &state_machine);
106 
107  symbolt make_symbol(std::string name, typet type);
109  void decl(symbol_exprt &sym, goto_programt::targett t, exprt init);
110 
112 
120 
121  typedef std::map<goto_programt::targett, goto_programt::targetst>
124 
126 
127  bool use_z3;
128 };
129 
131  goto_modelt &,
132  message_handlert &message_handler,
133  bool use_z3);
134 
135 #endif // CPROVER_GOTO_INSTRUMENT_ACCELERATE_ACCELERATE_H
subsumed.h
acceleratet::restrict_traces
void restrict_traces()
Definition: accelerate.cpp:286
subsumed_patht
Definition: subsumed.h:19
path.h
acceleratet::accelerate_limit
static const int accelerate_limit
Definition: accelerate.h:56
symbol_tablet
The symbol table.
Definition: symbol_table.h:19
acceleratet::utils
acceleration_utilst utils
Definition: accelerate.h:119
acceleratet::insert_looping_path
void insert_looping_path(goto_programt::targett &loop_header, goto_programt::targett &back_jump, goto_programt &looping_path, patht &inserted_path)
Definition: accelerate.cpp:208
acceleration_utilst
Definition: acceleration_utils.h:36
typet
The type of an expression, extends irept.
Definition: type.h:27
pathst
std::list< patht > pathst
Definition: path.h:46
acceleratet::symbol_table
symbol_tablet & symbol_table
Definition: accelerate.h:115
acceleratet
Definition: accelerate.h:30
trace_automaton.h
acceleration_utils.h
exprt
Base class for all expressions.
Definition: expr.h:54
acceleratet::message_handler
message_handlert & message_handler
Definition: accelerate.h:59
goto_modelt
Definition: goto_model.h:24
scratch_program.h
symbol_exprt
Expression to hold a symbol (variable)
Definition: std_expr.h:143
acceleratet::set_dirty_vars
void set_dirty_vars(path_acceleratort &accelerator)
Definition: accelerate.cpp:326
namespace.h
subsumed_pathst
std::list< subsumed_patht > subsumed_pathst
Definition: subsumed.h:33
acceleratet::subsumed
subsumed_pathst subsumed
Definition: accelerate.h:118
acceleratet::is_underapproximate
bool is_underapproximate(path_acceleratort &accelerator)
Definition: accelerate.cpp:423
expr.h
acceleratet::accelerate_loop
int accelerate_loop(goto_programt::targett &loop_header)
Definition: accelerate.cpp:89
namespacet
A namespacet is essentially one or two symbol tables bound together, to allow for symbol lookups in t...
Definition: namespace.h:93
acceleratet::extend_path
void extend_path(goto_programt::targett &t, goto_programt::targett &loop_header, natural_loops_mutablet::natural_loopt &loop, patht &prefix, pathst &loop_paths, pathst &exit_paths, goto_programt::targett &back_jump)
trace_automatont
Definition: trace_automaton.h:88
scratch_programt
Definition: scratch_program.h:36
acceleratet::overflow_mapt
std::map< goto_programt::targett, goto_programt::targetst > overflow_mapt
Definition: accelerate.h:122
acceleratet::find_paths
void find_paths(goto_programt::targett &loop_header, pathst &loop_paths, pathst &exit_paths, goto_programt::targett &back_jump)
acceleratet::add_dirty_checks
void add_dirty_checks()
Definition: accelerate.cpp:357
path_acceleratort
Definition: accelerator.h:26
acceleratet::accelerate_path
bool accelerate_path(patht &path, path_acceleratort &accelerator)
message_handlert
Definition: message.h:24
acceleratet::program
goto_programt & program
Definition: accelerate.h:113
accelerate_functions
void accelerate_functions(goto_modelt &, message_handlert &message_handler, bool use_z3)
Definition: accelerate.cpp:652
natural_loops_templatet< goto_programt, goto_programt::targett >
acceleratet::use_z3
bool use_z3
Definition: accelerate.h:127
acceleratet::make_symbol
symbolt make_symbol(std::string name, typet type)
Definition: accelerate.cpp:449
acceleratet::overflow_locs
overflow_mapt overflow_locs
Definition: accelerate.h:123
goto_functionst
A collection of goto functions.
Definition: goto_functions.h:22
acceleratet::accelerate_loops
int accelerate_loops()
Definition: accelerate.cpp:623
patht
std::list< path_nodet > patht
Definition: path.h:45
accelerator.h
symbolt
Symbol table entry.
Definition: symbol.h:27
natural_loops.h
acceleratet::insert_accelerator
void insert_accelerator(goto_programt::targett &loop_header, goto_programt::targett &back_jump, path_acceleratort &accelerator, subsumed_patht &subsumed_path)
Definition: accelerate.cpp:182
acceleratet::find_back_jump
goto_programt::targett find_back_jump(goto_programt::targett loop_header)
Definition: accelerate.cpp:34
goto_functions.h
goto_programt
A generic container class for the GOTO intermediate representation of one function.
Definition: goto_program.h:72
acceleratet::decl
void decl(symbol_exprt &sym, goto_programt::targett t)
Definition: accelerate.cpp:463
acceleratet::ns
namespacet ns
Definition: accelerate.h:116
acceleratet::insert_automaton
void insert_automaton(trace_automatont &automaton)
Definition: accelerate.cpp:485
acceleratet::acceleratet
acceleratet(goto_programt &_program, goto_modelt &_goto_model, message_handlert &message_handler, bool _use_z3)
Definition: accelerate.h:33
acceleratet::build_state_machine
void build_state_machine(trace_automatont::sym_mapt::iterator p, trace_automatont::sym_mapt::iterator end, state_sett &accept_states, symbol_exprt state, symbol_exprt next_state, scratch_programt &state_machine)
Definition: accelerate.cpp:526
message.h
expr_mapt
std::unordered_map< exprt, exprt, irep_hash > expr_mapt
Definition: acceleration_utils.h:33
acceleratet::natural_loops
natural_loops_mutablet natural_loops
Definition: accelerate.h:117
acceleratet::goto_functions
goto_functionst & goto_functions
Definition: accelerate.h:114
acceleratet::dirty_vars_map
expr_mapt dirty_vars_map
Definition: accelerate.h:125
goto_programt::targett
instructionst::iterator targett
Definition: goto_program.h:414
state_sett
std::set< statet > state_sett
Definition: trace_automaton.h:25
natural_loops_templatet< goto_programt, goto_programt::targett >::natural_loopt
std::set< goto_programt::targett > natural_loopt
Definition: natural_loops.h:49
acceleratet::make_overflow_loc
void make_overflow_loc(goto_programt::targett loop_header, goto_programt::targett &loop_end, goto_programt::targett &overflow_loc)
Definition: accelerate.cpp:237
acceleratet::contains_nested_loops
bool contains_nested_loops(goto_programt::targett &loop_header)
Definition: accelerate.cpp:59