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// MIR for `step_forward` after PreCodegen
fn step_forward(_1: u32, _2: usize) -> u32 {
debug x => _1;
debug n => _2;
let mut _0: u32;
scope 1 (inlined <u32 as Step>::forward) {
debug start => _1;
debug n => _2;
let _3: std::option::Option<u32>;
let mut _4: &std::option::Option<u32>;
let mut _7: bool;
let mut _8: u32;
scope 2 {
}
scope 3 (inlined Option::<u32>::is_none) {
debug self => _4;
let mut _6: bool;
scope 4 (inlined Option::<u32>::is_some) {
debug self => _4;
let mut _5: isize;
}
}
scope 5 (inlined core::num::<impl u32>::wrapping_add) {
debug self => _1;
debug rhs => _8;
}
}
bb0: {
StorageLive(_7);
StorageLive(_4);
StorageLive(_3);
_3 = <u32 as Step>::forward_checked(_1, _2) -> [return: bb1, unwind continue];
}
bb1: {
_4 = &_3;
StorageLive(_6);
StorageLive(_5);
_5 = discriminant(_3);
_6 = Eq(_5, const 1_isize);
StorageDead(_5);
_7 = Not(move _6);
StorageDead(_6);
switchInt(move _7) -> [0: bb2, otherwise: bb3];
}
bb2: {
StorageDead(_3);
StorageDead(_4);
goto -> bb4;
}
bb3: {
StorageDead(_3);
StorageDead(_4);
assert(!const true, "attempt to compute `{} + {}`, which would overflow", const _, const 1_u32) -> [success: bb4, unwind continue];
}
bb4: {
StorageDead(_7);
StorageLive(_8);
_8 = _2 as u32 (IntToInt);
_0 = Add(_1, _8);
StorageDead(_8);
return;
}
}
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