// MIR for `enumerated_loop` after PreCodegen fn enumerated_loop(_1: &[T], _2: impl Fn(usize, &T)) -> () { debug slice => _1; debug f => _2; let mut _0: (); let mut _11: std::ptr::NonNull; let mut _12: *const T; let mut _13: usize; let mut _32: std::option::Option<(usize, &T)>; let mut _35: &impl Fn(usize, &T); let mut _36: (usize, &T); let _37: (); scope 1 { debug (((iter: Enumerate>).0: std::slice::Iter<'_, T>).0: std::ptr::NonNull) => _11; debug (((iter: Enumerate>).0: std::slice::Iter<'_, T>).1: *const T) => _12; debug (((iter: Enumerate>).0: std::slice::Iter<'_, T>).2: std::marker::PhantomData<&T>) => const ZeroSized: PhantomData<&T>; debug ((iter: Enumerate>).1: usize) => _13; let _33: usize; let _34: &T; scope 2 { debug i => _33; debug x => _34; } scope 19 (inlined > as Iterator>::next) { let mut _27: std::option::Option<&T>; let mut _30: (usize, bool); let mut _31: (usize, &T); scope 20 { let _29: usize; scope 25 { } } scope 21 { scope 22 { scope 28 (inlined as FromResidual>>::from_residual) { } } } scope 23 { scope 24 { } } scope 26 (inlined as Try>::branch) { let _28: &T; scope 27 { } } scope 29 (inlined as Iterator>::next) { let _14: std::ptr::NonNull; let _16: std::ptr::NonNull; let mut _19: bool; let mut _22: std::ptr::NonNull; let mut _24: usize; let _26: &T; scope 30 { let _15: *const T; scope 31 { let _23: usize; scope 32 { scope 35 (inlined core::num::::unchecked_sub) { scope 36 (inlined core::ub_checks::check_language_ub) { scope 37 (inlined core::ub_checks::check_language_ub::runtime) { } } } scope 38 (inlined without_provenance_mut::) { } } scope 33 (inlined std::ptr::const_ptr::::addr) { scope 34 (inlined std::ptr::const_ptr::::cast::<()>) { } } scope 39 (inlined as PartialEq>::eq) { let mut _17: *mut T; let mut _18: *mut T; scope 40 (inlined NonNull::::as_ptr) { } scope 41 (inlined NonNull::::as_ptr) { } } scope 42 (inlined NonNull::::add) { let mut _20: *const T; let mut _21: *const T; scope 43 (inlined NonNull::::as_ptr) { } } scope 44 (inlined NonNull::::as_ref::<'_>) { let _25: *const T; scope 45 (inlined NonNull::::as_ptr) { } scope 46 (inlined std::ptr::mut_ptr::::cast_const) { } } } } } } } scope 3 (inlined core::slice::::iter) { scope 4 (inlined std::slice::Iter::<'_, T>::new) { let _3: usize; let mut _7: *mut T; let mut _8: *mut T; let mut _10: *const T; scope 5 { let _6: std::ptr::NonNull; scope 6 { let _9: *const T; scope 7 { } scope 12 (inlined std::ptr::without_provenance::) { scope 13 (inlined without_provenance_mut::) { } } scope 14 (inlined NonNull::::as_ptr) { } scope 15 (inlined std::ptr::mut_ptr::::add) { } } scope 8 (inlined as From<&[T]>>::from) { scope 9 (inlined NonNull::<[T]>::from_ref) { let mut _4: *const [T]; } } scope 10 (inlined NonNull::<[T]>::cast::) { let mut _5: *const T; scope 11 (inlined NonNull::<[T]>::as_ptr) { } } } } } scope 16 (inlined as Iterator>::enumerate) { scope 17 (inlined Enumerate::>::new) { } } scope 18 (inlined > as IntoIterator>::into_iter) { } bb0: { StorageLive(_3); StorageLive(_4); _3 = PtrMetadata(copy _1); _4 = &raw const (*_1); StorageLive(_5); _5 = copy _4 as *const T (PtrToPtr); _6 = NonNull:: { pointer: move _5 }; StorageDead(_5); StorageLive(_9); switchInt(const ::IS_ZST) -> [0: bb1, otherwise: bb2]; } bb1: { StorageLive(_8); StorageLive(_7); _7 = copy _4 as *mut T (PtrToPtr); _8 = Offset(copy _7, copy _3); StorageDead(_7); _9 = move _8 as *const T (PtrToPtr); StorageDead(_8); goto -> bb3; } bb2: { _9 = copy _3 as *const T (Transmute); goto -> bb3; } bb3: { _10 = copy _9; StorageDead(_9); StorageDead(_4); StorageDead(_3); StorageLive(_11); StorageLive(_12); StorageLive(_13); _11 = copy _6; _12 = copy _10; _13 = const 0_usize; goto -> bb4; } bb4: { StorageLive(_32); StorageLive(_29); StorageLive(_30); StorageLive(_27); StorageLive(_14); StorageLive(_15); StorageLive(_23); StorageLive(_24); StorageLive(_16); StorageLive(_26); _14 = copy _11; _15 = copy _12; switchInt(const ::IS_ZST) -> [0: bb5, otherwise: bb8]; } bb5: { StorageLive(_19); _16 = copy _15 as std::ptr::NonNull (Transmute); StorageLive(_17); _17 = copy _14 as *mut T (Transmute); StorageLive(_18); _18 = copy _16 as *mut T (Transmute); _19 = Eq(move _17, move _18); StorageDead(_18); StorageDead(_17); switchInt(move _19) -> [0: bb6, otherwise: bb7]; } bb6: { StorageDead(_19); StorageLive(_22); StorageLive(_21); StorageLive(_20); _20 = copy _14 as *const T (Transmute); _21 = Offset(move _20, const 1_usize); StorageDead(_20); _22 = NonNull:: { pointer: move _21 }; StorageDead(_21); _11 = move _22; StorageDead(_22); goto -> bb13; } bb7: { StorageDead(_19); StorageDead(_26); StorageDead(_16); StorageDead(_24); StorageDead(_23); StorageDead(_15); StorageDead(_14); goto -> bb10; } bb8: { _23 = copy _15 as usize (Transmute); switchInt(copy _23) -> [0: bb9, otherwise: bb12]; } bb9: { StorageDead(_26); StorageDead(_16); StorageDead(_24); StorageDead(_23); StorageDead(_15); StorageDead(_14); goto -> bb10; } bb10: { StorageDead(_27); StorageDead(_30); StorageDead(_29); StorageDead(_32); StorageDead(_11); StorageDead(_12); StorageDead(_13); drop(_2) -> [return: bb11, unwind unreachable]; } bb11: { return; } bb12: { _24 = SubUnchecked(copy _23, const 1_usize); _12 = copy _24 as *const T (Transmute); goto -> bb13; } bb13: { StorageLive(_25); _25 = copy _14 as *const T (Transmute); _26 = &(*_25); StorageDead(_25); _27 = Option::<&T>::Some(copy _26); StorageDead(_26); StorageDead(_16); StorageDead(_24); StorageDead(_23); StorageDead(_15); StorageDead(_14); _28 = move ((_27 as Some).0: &T); StorageDead(_27); _29 = copy _13; _30 = AddWithOverflow(copy _13, const 1_usize); assert(!move (_30.1: bool), "attempt to compute `{} + {}`, which would overflow", copy _13, const 1_usize) -> [success: bb14, unwind unreachable]; } bb14: { _13 = move (_30.0: usize); StorageLive(_31); _31 = (copy _29, copy _28); _32 = Option::<(usize, &T)>::Some(move _31); StorageDead(_31); StorageDead(_30); StorageDead(_29); _33 = copy (((_32 as Some).0: (usize, &T)).0: usize); _34 = copy (((_32 as Some).0: (usize, &T)).1: &T); StorageLive(_35); _35 = &_2; StorageLive(_36); _36 = (copy _33, copy _34); _37 = >::call(move _35, move _36) -> [return: bb15, unwind unreachable]; } bb15: { StorageDead(_36); StorageDead(_35); StorageDead(_32); goto -> bb4; } }