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Diffstat (limited to 'tests/mir-opt/early_otherwise_branch.rs')
-rw-r--r-- | tests/mir-opt/early_otherwise_branch.rs | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/tests/mir-opt/early_otherwise_branch.rs b/tests/mir-opt/early_otherwise_branch.rs new file mode 100644 index 000000000..7be9fbd03 --- /dev/null +++ b/tests/mir-opt/early_otherwise_branch.rs @@ -0,0 +1,32 @@ +// unit-test: EarlyOtherwiseBranch +// EMIT_MIR early_otherwise_branch.opt1.EarlyOtherwiseBranch.diff +fn opt1(x: Option<u32>, y: Option<u32>) -> u32 { + match (x, y) { + (Some(a), Some(b)) => 0, + _ => 1, + } +} + +// EMIT_MIR early_otherwise_branch.opt2.EarlyOtherwiseBranch.diff +fn opt2(x: Option<u32>, y: Option<u32>) -> u32 { + match (x, y) { + (Some(a), Some(b)) => 0, + (None, None) => 0, + _ => 1, + } +} + +// optimize despite different types +// EMIT_MIR early_otherwise_branch.opt3.EarlyOtherwiseBranch.diff +fn opt3(x: Option<u32>, y: Option<bool>) -> u32 { + match (x, y) { + (Some(a), Some(b)) => 0, + _ => 1, + } +} + +fn main() { + opt1(None, Some(0)); + opt2(None, Some(0)); + opt3(None, Some(false)); +} |