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Diffstat (limited to 'src/test/mir-opt/dest-prop/cycle.rs')
-rw-r--r-- | src/test/mir-opt/dest-prop/cycle.rs | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/test/mir-opt/dest-prop/cycle.rs b/src/test/mir-opt/dest-prop/cycle.rs new file mode 100644 index 000000000..c9187d408 --- /dev/null +++ b/src/test/mir-opt/dest-prop/cycle.rs @@ -0,0 +1,15 @@ +//! Tests that cyclic assignments don't hang DestinationPropagation, and result in reasonable code. +// compile-flags: -Zunsound-mir-opts +fn val() -> i32 { + 1 +} + +// EMIT_MIR cycle.main.DestinationPropagation.diff +fn main() { + let mut x = val(); + let y = x; + let z = y; + x = z; + + drop(x); +} |