mirror of https://github.com/rust-lang/rust.git
30 lines
744 B
Rust
30 lines
744 B
Rust
//@ test-mir-pass: InstSimplify-after-simplifycfg
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#![feature(custom_mir, core_intrinsics)]
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#![crate_type = "lib"]
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use std::intrinsics::mir::*;
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// EMIT_MIR duplicate_switch_targets.assert_zero.InstSimplify-after-simplifycfg.diff
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#[custom_mir(dialect = "runtime", phase = "post-cleanup")]
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pub unsafe fn assert_zero(x: u8) -> u8 {
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// CHECK-LABEL: fn assert_zero(
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// CHECK: switchInt({{.*}}) -> [0: {{bb.*}}, otherwise: {{bb.*}}]
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mir! {
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{
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match x {
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0 => retblock,
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1 => unreachable,
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_ => unreachable,
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}
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}
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unreachable = {
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Unreachable()
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}
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retblock = {
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RET = x;
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Return()
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}
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}
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}
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