[PATCH] D18875: NFC: unify clang / LLVM atomic ordering

[Richard Smith via llvm-commits]

rsmith added a subscriber: rsmith.

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Comment at: include/llvm/Support/AtomicOrdering.h:23-34
@@ +22,14 @@
+
+/// Atomic ordering for C11 / C++11's memody models.
+///
+/// These values cannot change because they are shared with standard library
+/// implementations as well as with other compilers.
+enum class AtomicOrderingCABI {
+  relaxed = 0,
+  consume = 1,
+  acquire = 2,
+  release = 3,
+  acq_rel = 4,
+  seq_cst = 5,
+};
+
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Why does LLVM need to know about these? It seems like they're specific to the frontend. Is there some way in which they're not? (Is some upcoming change going to use these from LLVM?)

What happens if some C ABI picks different values?


http://reviews.llvm.org/D18875