1""" 2Test PHI nodes work in the IR interpreter. 3""" 4 5 6import lldb 7from lldbsuite.test.lldbtest import * 8import lldbsuite.test.lldbutil as lldbutil 9 10 11class IRInterpreterPHINodesTestCase(TestBase): 12 mydir = TestBase.compute_mydir(__file__) 13 14 def test_phi_node_support(self): 15 """Test support for PHI nodes in the IR interpreter.""" 16 17 self.build() 18 exe = self.getBuildArtifact("a.out") 19 self.runCmd('file ' + exe, CURRENT_EXECUTABLE_SET) 20 21 # Break on the first assignment to i 22 line = line_number('main.cpp', 'i = 5') 23 lldbutil.run_break_set_by_file_and_line( 24 self, 'main.cpp', line, num_expected_locations=1, loc_exact=True) 25 26 self.runCmd('run', RUN_SUCCEEDED) 27 28 # The stop reason of the thread should be breakpoint 29 self.expect('thread list', STOPPED_DUE_TO_BREAKPOINT, 30 substrs=['stopped', 'stop reason = breakpoint']) 31 32 self.runCmd('s') 33 34 # The logical 'or' causes a PHI node to be generated. Execute without JIT 35 # to test that the interpreter can handle this 36 self.expect('expr -j 0 -- i == 3 || i == 5', substrs=['true']) 37 38 self.runCmd('s') 39 self.expect('expr -j 0 -- i == 3 || i == 5', substrs=['false']) 40 self.runCmd('s') 41 self.expect('expr -j 0 -- i == 3 || i == 5', substrs=['true']) 42