[clang] [Clang] Introduce scoped variants of GNU atomic functions (PR #72280)

[Joseph Huber via cfe-commits]

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@@ -54,6 +59,16 @@ enum class SyncScope {
 
 inline llvm::StringRef getAsString(SyncScope S) {
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jhuber6 wrote:

I think it's because this is for AST printing purposes, while the backend strings vary per target.

https://github.com/llvm/llvm-project/pull/72280