xref: /llvm-project/lldb/test/API/commands/expression/ir-interpreter/TestIRInterpreter.py (revision e179e7234ffedc7552e2729e76860cfab0dc103e) 
1"""
2Test the IR interpreter
3"""
4
5
6import unittest2
7
8import lldb
9from lldbsuite.test.decorators import *
10from lldbsuite.test.lldbtest import *
11from lldbsuite.test import lldbutil
12
13
14class IRInterpreterTestCase(TestBase):
15
16    mydir = TestBase.compute_mydir(__file__)
17    NO_DEBUG_INFO_TESTCASE = True
18
19    def setUp(self):
20        # Call super's setUp().
21        TestBase.setUp(self)
22        # Find the line number to break for main.c.
23        self.line = line_number('main.c',
24                                '// Set breakpoint here')
25
26        # Disable confirmation prompt to avoid infinite wait
27        self.runCmd("settings set auto-confirm true")
28        self.addTearDownHook(
29            lambda: self.runCmd("settings clear auto-confirm"))
30
31    def build_and_run(self):
32        """Test the IR interpreter"""
33        self.build()
34
35        self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
36
37        lldbutil.run_break_set_by_file_and_line(
38            self, "main.c", self.line, num_expected_locations=1, loc_exact=False)
39
40        self.runCmd("run", RUN_SUCCEEDED)
41
42    @add_test_categories(['pyapi'])
43    # getpid() is POSIX, among other problems, see bug
44    @expectedFailureAll(
45        oslist=['windows'],
46        bugnumber="http://llvm.org/pr21765")
47    @expectedFailureNetBSD
48    def test_ir_interpreter(self):
49        self.build_and_run()
50
51        options = lldb.SBExpressionOptions()
52        options.SetLanguage(lldb.eLanguageTypeC_plus_plus)
53
54        set_up_expressions = ["int $i = 9", "int $j = 3", "int $k = 5"]
55
56        expressions = ["$i + $j",
57                       "$i - $j",
58                       "$i * $j",
59                       "$i / $j",
60                       "$i % $k",
61                       "$i << $j",
62                       "$i & $j",
63                       "$i | $j",
64                       "$i ^ $j"]
65
66        for expression in set_up_expressions:
67            self.frame().EvaluateExpression(expression, options)
68
69        for expression in expressions:
70            interp_expression = expression
71            jit_expression = "(int)getpid(); " + expression
72
73            interp_result = self.frame().EvaluateExpression(
74                interp_expression, options).GetValueAsSigned()
75            jit_result = self.frame().EvaluateExpression(
76                jit_expression, options).GetValueAsSigned()
77
78            self.assertEqual(
79                interp_result,
80                jit_result,
81                "While evaluating " +
82                expression)
83
84    def test_type_conversions(self):
85        target = self.dbg.GetDummyTarget()
86        short_val = target.EvaluateExpression("(short)-1")
87        self.assertEqual(short_val.GetValueAsSigned(), -1)
88        long_val = target.EvaluateExpression("(long) "+ short_val.GetName())
89        self.assertEqual(long_val.GetValueAsSigned(), -1)
90