1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
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));
}
|
