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Diffstat (limited to '')
-rw-r--r-- | compiler/rustc_data_structures/src/graph/dominators/tests.rs | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/compiler/rustc_data_structures/src/graph/dominators/tests.rs b/compiler/rustc_data_structures/src/graph/dominators/tests.rs new file mode 100644 index 000000000..ff31d8f7f --- /dev/null +++ b/compiler/rustc_data_structures/src/graph/dominators/tests.rs @@ -0,0 +1,45 @@ +use super::*; + +use super::super::tests::TestGraph; + +#[test] +fn diamond() { + let graph = TestGraph::new(0, &[(0, 1), (0, 2), (1, 3), (2, 3)]); + + let dominators = dominators(&graph); + let immediate_dominators = &dominators.immediate_dominators; + assert_eq!(immediate_dominators[0], Some(0)); + assert_eq!(immediate_dominators[1], Some(0)); + assert_eq!(immediate_dominators[2], Some(0)); + assert_eq!(immediate_dominators[3], Some(0)); +} + +#[test] +fn paper() { + // example from the paper: + let graph = TestGraph::new( + 6, + &[(6, 5), (6, 4), (5, 1), (4, 2), (4, 3), (1, 2), (2, 3), (3, 2), (2, 1)], + ); + + let dominators = dominators(&graph); + let immediate_dominators = &dominators.immediate_dominators; + assert_eq!(immediate_dominators[0], None); // <-- note that 0 is not in graph + assert_eq!(immediate_dominators[1], Some(6)); + assert_eq!(immediate_dominators[2], Some(6)); + assert_eq!(immediate_dominators[3], Some(6)); + assert_eq!(immediate_dominators[4], Some(6)); + assert_eq!(immediate_dominators[5], Some(6)); + assert_eq!(immediate_dominators[6], Some(6)); +} + +#[test] +fn paper_slt() { + // example from the paper: + let graph = TestGraph::new( + 1, + &[(1, 2), (1, 3), (2, 3), (2, 7), (3, 4), (3, 6), (4, 5), (5, 4), (6, 7), (7, 8), (8, 5)], + ); + + dominators(&graph); +} |