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#![feature(custom_mir, core_intrinsics)]
#![crate_type = "lib"]
use std::intrinsics::mir::*;
// unit-test: InstCombine
// EMIT_MIR instcombine_duplicate_switch_targets.assert_zero.InstCombine.diff
#[custom_mir(dialect = "runtime", phase = "post-cleanup")]
pub unsafe fn assert_zero(x: u8) -> u8 {
mir!(
{
match x {
0 => retblock,
1 => unreachable,
_ => unreachable,
}
}
unreachable = {
Unreachable()
}
retblock = {
RET = x;
Return()
}
)
}
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