mirror of https://github.com/rust-lang/rust
32 lines
710 B
Rust
32 lines
710 B
Rust
// Optimized MIR shouldn't have critical call edges
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//
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//@ build-fail
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//@ edition: 2021
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//@ compile-flags: --crate-type=lib
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//@ failure-status: 101
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//@ dont-check-compiler-stderr
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//@ error-pattern: encountered critical edge in `Call` terminator
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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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#[inline(always)]
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pub fn f(a: u32) -> u32 {
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mir!(
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{
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match a {
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0 => bb1,
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_ => bb2,
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}
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}
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bb1 = {
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Call(RET = f(1), ReturnTo(bb2), UnwindTerminate(ReasonAbi))
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}
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bb2 = {
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RET = 2;
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Return()
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}
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)
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}
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