runtime/internal/atomic: deduplicate And/Or code on wasm

When I initially added the wasm code for these ops I did not saw that
wasm actually has the Cas operations implemented, although they are
merely pointer assignments since wasm is single threaded.

Now with a generic implementation for And/Or we can add wasm to the
build tags.

For #61395

Change-Id: I997dc90477c772882d6703df1b795dfc0d90a699
GitHub-Last-Rev: 92736a6
GitHub-Pull-Request: #64300
Reviewed-on: https://go-review.googlesource.com/c/go/+/544116
Run-TryBot: Mauri de Souza Meneguzzo <mauri870@gmail.com>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>

src/runtime/internal/atomic/atomic_andor_generic.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build arm || s390x || loong64 || mips || mipsle || mips64 || mips64le
+//go:build arm || s390x || loong64 || mips || mipsle || mips64 || mips64le || wasm
 
 package atomic
 

src/runtime/internal/atomic/atomic_wasm.go

@@ -339,51 +339,3 @@ func Xaddint64(ptr *int64, delta int64) int64 {
 	*ptr = new
 	return new
 }
-
-//go:nosplit
-//go:noinline
-func And32(ptr *uint32, val uint32) uint32 {
-	old := *ptr
-	*ptr = old & val
-	return old
-}
-
-//go:nosplit
-//go:noinline
-func And64(ptr *uint64, val uint64) uint64 {
-	old := *ptr
-	*ptr = old & val
-	return old
-}
-
-//go:nosplit
-//go:noinline
-func Anduintptr(ptr *uintptr, val uintptr) uintptr {
-	old := *ptr
-	*ptr = old & val
-	return old
-}
-
-//go:nosplit
-//go:noinline
-func Or32(ptr *uint32, val uint32) uint32 {
-	old := *ptr
-	*ptr = old | val
-	return old
-}
-
-//go:nosplit
-//go:noinline
-func Or64(ptr *uint64, val uint64) uint64 {
-	old := *ptr
-	*ptr = old | val
-	return old
-}
-
-//go:nosplit
-//go:noinline
-func Oruintptr(ptr *uintptr, val uintptr) uintptr {
-	old := *ptr
-	*ptr = old | val
-	return old
-}