mirror of https://github.com/rust-lang/rust
31 lines
697 B
Rust
31 lines
697 B
Rust
// Regression test for issue #117331, where variable `a` was misidentified as
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// being in SSA form (the definition occurs on the return edge only).
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//
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//@ edition:2021
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//@ compile-flags: --crate-type=lib
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//@ build-pass
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//@ needs-unwind
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#![feature(custom_mir, core_intrinsics)]
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use core::intrinsics::mir::*;
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#[custom_mir(dialect = "runtime", phase = "optimized")]
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pub fn f() -> u32 {
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mir!(
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let a: u32;
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{
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Call(a = g(), ReturnTo(bb1), UnwindCleanup(bb2))
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}
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bb1 = {
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RET = a;
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Return()
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}
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bb2 (cleanup) = {
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RET = a;
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UnwindResume()
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}
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)
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}
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#[inline(never)]
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pub fn g() -> u32 { 0 }
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