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- // MIR for `if_let` before UnreachablePropagation
+ // MIR for `if_let` after UnreachablePropagation
fn if_let() -> () {
let mut _0: ();
let mut _1: std::option::Option<Empty>;
let mut _2: isize;
let _5: ();
let mut _6: bool;
let mut _7: !;
+ let mut _8: bool;
scope 1 {
debug _x => _3;
let _3: Empty;
let mut _4: i32;
scope 2 {
debug _y => _4;
}
}
bb0: {
StorageLive(_1);
_1 = empty() -> [return: bb1, unwind unreachable];
}
bb1: {
_2 = discriminant(_1);
- switchInt(move _2) -> [1: bb2, otherwise: bb6];
+ _8 = Ne(_2, const 1_isize);
+ assume(move _8);
+ goto -> bb6;
}
bb2: {
- StorageLive(_3);
- _3 = move ((_1 as Some).0: Empty);
- StorageLive(_4);
- StorageLive(_5);
- StorageLive(_6);
- _6 = const true;
- switchInt(move _6) -> [0: bb4, otherwise: bb3];
+ unreachable;
}
bb3: {
- _4 = const 21_i32;
- _5 = const ();
- goto -> bb5;
+ unreachable;
}
bb4: {
- _4 = const 42_i32;
- _5 = const ();
- goto -> bb5;
+ unreachable;
}
bb5: {
- StorageDead(_6);
- StorageDead(_5);
- StorageLive(_7);
unreachable;
}
bb6: {
_0 = const ();
StorageDead(_1);
return;
}
}
|
