cprover
value_set_domain_fi.cpp
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1 /*******************************************************************\
2 
3 Module: Value Set Domain (Flow Insensitive)
4 
5 Author: Daniel Kroening, kroening@kroening.com
6  CM Wintersteiger
7 
8 \*******************************************************************/
9 
12 
13 #include "value_set_domain_fi.h"
14 
15 #include <util/std_code.h>
16 
18  const namespacet &ns,
19  const irep_idt &function_from,
20  locationt from_l,
21  const irep_idt &function_to,
22  locationt to_l)
23 {
24  value_set.changed = false;
25 
26  value_set.set_from(function_from, from_l->location_number);
27  value_set.set_to(function_to, to_l->location_number);
28 
29  // std::cout << "transforming: " <<
30  // from_l->function << " " << from_l->location_number << " to " <<
31  // to_l->function << " " << to_l->location_number << '\n';
32 
33  switch(from_l->type)
34  {
35  case GOTO:
36  // ignore for now
37  break;
38 
39  case END_FUNCTION:
41  break;
42 
43  case RETURN:
44  case OTHER:
45  case ASSIGN:
46  value_set.apply_code(from_l->code, ns);
47  break;
48 
49  case FUNCTION_CALL:
50  {
51  const code_function_callt &code = from_l->get_function_call();
52 
53  value_set.do_function_call(function_to, code.arguments(), ns);
54  break;
55  }
56 
57  case CATCH:
58  case THROW:
59  case DECL:
60  case DEAD:
61  case ATOMIC_BEGIN:
62  case ATOMIC_END:
63  case START_THREAD:
64  case END_THREAD:
65  case LOCATION:
66  case SKIP:
67  case ASSERT:
68  case ASSUME:
69  case INCOMPLETE_GOTO:
71  // do nothing
72  break;
73  }
74 
75  return (value_set.changed);
76 }
codet representation of a function call statement.
Definition: std_code.h:1215
argumentst & arguments()
Definition: std_code.h:1260
dstringt has one field, an unsigned integer no which is an index into a static table of strings.
Definition: dstring.h:37
A namespacet is essentially one or two symbol tables bound together, to allow for symbol lookups in t...
Definition: namespace.h:92
bool transform(const namespacet &ns, const irep_idt &function_from, locationt from_l, const irep_idt &function_to, locationt to_l) override
void set_from(const irep_idt &function, unsigned inx)
Definition: value_set_fi.h:44
void set_to(const irep_idt &function, unsigned inx)
Definition: value_set_fi.h:50
void apply_code(const codet &code, const namespacet &ns)
void do_end_function(const exprt &lhs, const namespacet &ns)
void do_function_call(const irep_idt &function, const exprt::operandst &arguments, const namespacet &ns)
@ FUNCTION_CALL
Definition: goto_program.h:50
@ ATOMIC_END
Definition: goto_program.h:45
@ DEAD
Definition: goto_program.h:49
@ END_FUNCTION
Definition: goto_program.h:43
@ RETURN
Definition: goto_program.h:46
@ ASSIGN
Definition: goto_program.h:47
@ ASSERT
Definition: goto_program.h:37
@ ATOMIC_BEGIN
Definition: goto_program.h:44
@ CATCH
Definition: goto_program.h:52
@ END_THREAD
Definition: goto_program.h:41
@ SKIP
Definition: goto_program.h:39
@ NO_INSTRUCTION_TYPE
Definition: goto_program.h:34
@ START_THREAD
Definition: goto_program.h:40
@ THROW
Definition: goto_program.h:51
@ DECL
Definition: goto_program.h:48
@ OTHER
Definition: goto_program.h:38
@ GOTO
Definition: goto_program.h:35
@ INCOMPLETE_GOTO
Definition: goto_program.h:53
@ ASSUME
Definition: goto_program.h:36
Value Set (Flow Insensitive)