sync/atomic: hint users of old API to use new type-based API instead

Fixes #56495

Change-Id: Ib2f39273da68e3056688306aa0d5e274b5507bf4
Reviewed-on: https://go-review.googlesource.com/c/go/+/449237
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Sean Liao <sean@liao.dev>
Reviewed-by: Ian Lance Taylor <iant@google.com>

src/sync/atomic/doc.go

@@ -56,98 +56,137 @@ import (
 //
 // On ARM, 386, and 32-bit MIPS, it is the caller's responsibility to arrange
 // for 64-bit alignment of 64-bit words accessed atomically via the primitive
-// atomic functions (types Int64 and Uint64 are automatically aligned).
+// atomic functions (types [Int64] and [Uint64] are automatically aligned).
 // The first word in an allocated struct, array, or slice; in a global
 // variable; or in a local variable (because the subject of all atomic operations
 // will escape to the heap) can be relied upon to be 64-bit aligned.
 
 // SwapInt32 atomically stores new into *addr and returns the previous *addr value.
+// Consider using the more ergonomic and less error-prone [Int32.Swap] instead.
 func SwapInt32(addr *int32, new int32) (old int32)
 
 // SwapInt64 atomically stores new into *addr and returns the previous *addr value.
+// Consider using the more ergonomic and less error-prone [Int64.Swap] instead
+// (particularly if you target 32-bit platforms; see the bugs section).
 func SwapInt64(addr *int64, new int64) (old int64)
 
 // SwapUint32 atomically stores new into *addr and returns the previous *addr value.
+// Consider using the more ergonomic and less error-prone [Uint32.Swap] instead.
 func SwapUint32(addr *uint32, new uint32) (old uint32)
 
 // SwapUint64 atomically stores new into *addr and returns the previous *addr value.
+// Consider using the more ergonomic and less error-prone [Uint64.Swap] instead
+// (particularly if you target 32-bit platforms; see the bugs section).
 func SwapUint64(addr *uint64, new uint64) (old uint64)
 
 // SwapUintptr atomically stores new into *addr and returns the previous *addr value.
+// Consider using the more ergonomic and less error-prone [Uintptr.Swap] instead.
 func SwapUintptr(addr *uintptr, new uintptr) (old uintptr)
 
 // SwapPointer atomically stores new into *addr and returns the previous *addr value.
+// Consider using the more ergonomic and less error-prone [Pointer.Swap] instead.
 func SwapPointer(addr *unsafe.Pointer, new unsafe.Pointer) (old unsafe.Pointer)
 
 // CompareAndSwapInt32 executes the compare-and-swap operation for an int32 value.
+// Consider using the more ergonomic and less error-prone [Int32.CompareAndSwap] instead.
 func CompareAndSwapInt32(addr *int32, old, new int32) (swapped bool)
 
 // CompareAndSwapInt64 executes the compare-and-swap operation for an int64 value.
+// Consider using the more ergonomic and less error-prone [Int64.CompareAndSwap] instead
+// (particularly if you target 32-bit platforms; see the bugs section).
 func CompareAndSwapInt64(addr *int64, old, new int64) (swapped bool)
 
 // CompareAndSwapUint32 executes the compare-and-swap operation for a uint32 value.
+// Consider using the more ergonomic and less error-prone [Uint32.CompareAndSwap] instead.
 func CompareAndSwapUint32(addr *uint32, old, new uint32) (swapped bool)
 
 // CompareAndSwapUint64 executes the compare-and-swap operation for a uint64 value.
+// Consider using the more ergonomic and less error-prone [Uint64.CompareAndSwap] instead
+// (particularly if you target 32-bit platforms; see the bugs section).
 func CompareAndSwapUint64(addr *uint64, old, new uint64) (swapped bool)
 
 // CompareAndSwapUintptr executes the compare-and-swap operation for a uintptr value.
+// Consider using the more ergonomic and less error-prone [Uintptr.CompareAndSwap] instead.
 func CompareAndSwapUintptr(addr *uintptr, old, new uintptr) (swapped bool)
 
 // CompareAndSwapPointer executes the compare-and-swap operation for a unsafe.Pointer value.
+// Consider using the more ergonomic and less error-prone [Pointer.CompareAndSwap] instead.
 func CompareAndSwapPointer(addr *unsafe.Pointer, old, new unsafe.Pointer) (swapped bool)
 
 // AddInt32 atomically adds delta to *addr and returns the new value.
+// Consider using the more ergonomic and less error-prone [Int32.Add] instead.
 func AddInt32(addr *int32, delta int32) (new int32)
 
 // AddUint32 atomically adds delta to *addr and returns the new value.
 // To subtract a signed positive constant value c from x, do AddUint32(&x, ^uint32(c-1)).
 // In particular, to decrement x, do AddUint32(&x, ^uint32(0)).
+// Consider using the more ergonomic and less error-prone [Uint32.Add] instead.
 func AddUint32(addr *uint32, delta uint32) (new uint32)
 
 // AddInt64 atomically adds delta to *addr and returns the new value.
+// Consider using the more ergonomic and less error-prone [Int64.Add] instead
+// (particularly if you target 32-bit platforms; see the bugs section).
 func AddInt64(addr *int64, delta int64) (new int64)
 
 // AddUint64 atomically adds delta to *addr and returns the new value.
 // To subtract a signed positive constant value c from x, do AddUint64(&x, ^uint64(c-1)).
 // In particular, to decrement x, do AddUint64(&x, ^uint64(0)).
+// Consider using the more ergonomic and less error-prone [Uint64.Add] instead
+// (particularly if you target 32-bit platforms; see the bugs section).
 func AddUint64(addr *uint64, delta uint64) (new uint64)
 
 // AddUintptr atomically adds delta to *addr and returns the new value.
+// Consider using the more ergonomic and less error-prone [Uintptr.Add] instead.
 func AddUintptr(addr *uintptr, delta uintptr) (new uintptr)
 
 // LoadInt32 atomically loads *addr.
+// Consider using the more ergonomic and less error-prone [Int32.Load] instead.
 func LoadInt32(addr *int32) (val int32)
 
 // LoadInt64 atomically loads *addr.
+// Consider using the more ergonomic and less error-prone [Int64.Load] instead
+// (particularly if you target 32-bit platforms; see the bugs section).
 func LoadInt64(addr *int64) (val int64)
 
 // LoadUint32 atomically loads *addr.
+// Consider using the more ergonomic and less error-prone [Uint32.Load] instead.
 func LoadUint32(addr *uint32) (val uint32)
 
 // LoadUint64 atomically loads *addr.
+// Consider using the more ergonomic and less error-prone [Uint64.Load] instead
+// (particularly if you target 32-bit platforms; see the bugs section).
 func LoadUint64(addr *uint64) (val uint64)
 
 // LoadUintptr atomically loads *addr.
+// Consider using the more ergonomic and less error-prone [Uintptr.Load] instead.
 func LoadUintptr(addr *uintptr) (val uintptr)
 
 // LoadPointer atomically loads *addr.
+// Consider using the more ergonomic and less error-prone [Pointer.Load] instead.
 func LoadPointer(addr *unsafe.Pointer) (val unsafe.Pointer)
 
 // StoreInt32 atomically stores val into *addr.
+// Consider using the more ergonomic and less error-prone [Int32.Store] instead.
 func StoreInt32(addr *int32, val int32)
 
 // StoreInt64 atomically stores val into *addr.
+// Consider using the more ergonomic and less error-prone [Int64.Store] instead
+// (particularly if you target 32-bit platforms; see the bugs section).
 func StoreInt64(addr *int64, val int64)
 
 // StoreUint32 atomically stores val into *addr.
+// Consider using the more ergonomic and less error-prone [Uint32.Store] instead.
 func StoreUint32(addr *uint32, val uint32)
 
 // StoreUint64 atomically stores val into *addr.
+// Consider using the more ergonomic and less error-prone [Uint64.Store] instead
+// (particularly if you target 32-bit platforms; see the bugs section).
 func StoreUint64(addr *uint64, val uint64)
 
 // StoreUintptr atomically stores val into *addr.
+// Consider using the more ergonomic and less error-prone [Uintptr.Store] instead.
 func StoreUintptr(addr *uintptr, val uintptr)
 
 // StorePointer atomically stores val into *addr.
+// Consider using the more ergonomic and less error-prone [Pointer.Store] instead.
 func StorePointer(addr *unsafe.Pointer, val unsafe.Pointer)