mirror of https://github.com/rust-lang/rust
46 lines
957 B
Diff
46 lines
957 B
Diff
- // MIR for `as_match` before UnreachablePropagation
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+ // MIR for `as_match` after UnreachablePropagation
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fn as_match() -> () {
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let mut _0: ();
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let mut _1: std::option::Option<Empty>;
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let mut _2: isize;
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let _3: Empty;
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let mut _4: !;
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+ let mut _5: bool;
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scope 1 {
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debug _x => _3;
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}
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bb0: {
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StorageLive(_1);
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_1 = empty() -> [return: bb1, unwind continue];
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}
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bb1: {
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_2 = discriminant(_1);
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- switchInt(move _2) -> [0: bb4, 1: bb3, otherwise: bb2];
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+ _5 = Eq(_2, const 0_isize);
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+ assume(move _5);
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+ goto -> bb4;
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}
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bb2: {
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unreachable;
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}
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bb3: {
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- StorageLive(_3);
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- _3 = move ((_1 as Some).0: Empty);
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- StorageLive(_4);
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unreachable;
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}
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bb4: {
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_0 = const ();
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StorageDead(_1);
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return;
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}
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}
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