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Fix handling of CFG triangles in compute_postorder.

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For example, in `loops_one`, ebb3 is the bottom of a triangle, so
postorder should order it after the rest of the triangle.
This commit is contained in:
Dan Gohman
2017-11-07 16:57:22 -08:00
parent 849f090562
commit 2b6502ac6e
3 changed files with 24 additions and 36 deletions
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12
lib/cretonne/src/loop_analysis.rs
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@@ -326,16 +326,16 @@ mod test {
let loops = loop_analysis.loops().collect::<Vec<Loop>>();
assert_eq!(loops.len(), 3);
assert_eq!(loop_analysis.loop_header(loops[0]), ebb0);
assert_eq!(loop_analysis.loop_header(loops[1]), ebb1);
assert_eq!(loop_analysis.loop_header(loops[2]), ebb3);
assert_eq!(loop_analysis.loop_header(loops[1]), ebb3);
assert_eq!(loop_analysis.loop_header(loops[2]), ebb1);
assert_eq!(loop_analysis.loop_parent(loops[1]), Some(loops[0]));
assert_eq!(loop_analysis.loop_parent(loops[2]), Some(loops[0]));
assert_eq!(loop_analysis.loop_parent(loops[0]), None);
assert_eq!(loop_analysis.is_in_loop(ebb0, loops[0]), true);
assert_eq!(loop_analysis.is_in_loop(ebb1, loops[1]), true);
assert_eq!(loop_analysis.is_in_loop(ebb2, loops[1]), true);
assert_eq!(loop_analysis.is_in_loop(ebb3, loops[2]), true);
assert_eq!(loop_analysis.is_in_loop(ebb4, loops[2]), true);
assert_eq!(loop_analysis.is_in_loop(ebb3, loops[1]), true);
assert_eq!(loop_analysis.is_in_loop(ebb4, loops[1]), true);
assert_eq!(loop_analysis.is_in_loop(ebb1, loops[2]), true);
assert_eq!(loop_analysis.is_in_loop(ebb2, loops[2]), true);
assert_eq!(loop_analysis.is_in_loop(ebb5, loops[0]), true);
}
}