Move `use align_of` in atomic.rs into the places where it is used.
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@ -111,9 +111,6 @@ use crate::cell::UnsafeCell;
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use crate::fmt;
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use crate::intrinsics;
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#[allow(unused_imports)]
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use crate::mem::align_of;
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use crate::hint::spin_loop;
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/// Signals the processor that it is inside a busy-wait spin-loop ("spin lock").
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@ -861,6 +858,7 @@ impl<T> AtomicPtr<T> {
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#[cfg(target_has_atomic_equal_alignment = "ptr")]
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#[unstable(feature = "atomic_from_mut", issue = "76314")]
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pub fn from_mut(v: &mut *mut T) -> &Self {
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use crate::mem::align_of;
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let [] = [(); align_of::<AtomicPtr<()>>() - align_of::<*mut ()>()];
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// SAFETY:
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// - the mutable reference guarantees unique ownership.
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@ -1311,6 +1309,7 @@ assert_eq!(some_int, 100);
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#[$cfg_align]
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#[unstable(feature = "atomic_from_mut", issue = "76314")]
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pub fn from_mut(v: &mut $int_type) -> &Self {
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use crate::mem::align_of;
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let [] = [(); align_of::<Self>() - align_of::<$int_type>()];
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// SAFETY:
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// - the mutable reference guarantees unique ownership.
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