[libcxx-commits] [libcxx] [libc++][NFC] Simplify features for detecting atomics' support. (PR #75553)

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@@ -183,25 +183,26 @@ def _getAndroidDeviceApi(cfg):
         actions=[AddLinkFlag("-latomic")],
     ),
     Feature(
-        name="non-lockfree-atomics",
+        name="has-64-bit-atomics",
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EricWF wrote:

I think this name is both an improvement (because it calls out the size being the factor here), but also gets worse because locking atomics are still atomic. I wouldn't understand the meaning of this feature check if I were just reading it in the test.

https://github.com/llvm/llvm-project/pull/75553