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33 lines
627 B
Rust
33 lines
627 B
Rust
//! Regression test for <https://github.com/rust-lang/rust/issues/26468>.
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//! Range bug in LLVM misoptimized second `if let` inside `for _ in 0..1` away.
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//@ run-pass
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#![allow(dead_code)]
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enum FooMode {
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Check = 0x1001,
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}
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enum BarMode {
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Check = 0x2001,
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}
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enum Mode {
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Foo(FooMode),
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Bar(BarMode),
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}
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#[inline(never)]
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fn broken(mode: &Mode) -> u32 {
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for _ in 0..1 {
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if let Mode::Foo(FooMode::Check) = *mode { return 17 }
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if let Mode::Bar(BarMode::Check) = *mode { return 19 }
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}
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return 42;
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}
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fn main() {
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let mode = Mode::Bar(BarMode::Check);
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assert_eq!(broken(&mode), 19);
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}
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