27 lines
754 B
Rust
27 lines
754 B
Rust
//@ test-mir-pass: EarlyOtherwiseBranch
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//@ compile-flags: -Zmir-enable-passes=+UnreachableEnumBranching
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// must not optimize as it does not follow the pattern of
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// left and right hand side being the same variant
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// EMIT_MIR early_otherwise_branch_noopt.noopt1.EarlyOtherwiseBranch.diff
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fn noopt1(x: Option<u32>, y: Option<u32>) -> u32 {
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// CHECK-LABEL: fn noopt1(
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// CHECK: bb0: {
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// CHECK: [[LOCAL1:_.*]] = discriminant({{.*}});
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// CHECK-NOT: Ne
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// CHECK-NOT: discriminant
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// CHECK: switchInt(move [[LOCAL1]]) -> [
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// CHECK-NEXT: }
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match (x, y) {
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(Some(a), Some(b)) => 0,
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(Some(a), None) => 1,
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(None, Some(b)) => 2,
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(None, None) => 3,
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}
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}
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fn main() {
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noopt1(None, Some(0));
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}
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