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Diffstat (limited to 'src/doc/reference/src/conditional-compilation.md')
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1 files changed, 19 insertions, 0 deletions
diff --git a/src/doc/reference/src/conditional-compilation.md b/src/doc/reference/src/conditional-compilation.md index 6966cec4f..97840e4f6 100644 --- a/src/doc/reference/src/conditional-compilation.md +++ b/src/doc/reference/src/conditional-compilation.md @@ -191,6 +191,25 @@ Example values: * `"pc"` * `"unknown"` +### `target_has_atomic` + +Key-value option set for each bit width that the target supports +atomic loads, stores, and compare-and-swap operations. + +When this cfg is present, all of the stable [`core::sync::atomic`] APIs are available for +the relevant atomic width. + +[`core::sync::atomic`]: ../core/sync/atomic/index.html + +Possible values: + +* `"8"` +* `"16"` +* `"32"` +* `"64"` +* `"128"` +* `"ptr"` + ### `test` Enabled when compiling the test harness. Done with `rustc` by using the |