[clang] [clang] constexpr atomic builtins (__c11_atomic_OP and __atomic_OP) (PR #98756)

[Aaron Ballman via cfe-commits]

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In-Reply-To: <llvm.org/llvm/llvm-project/pull/98756 at github.com>


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@@ -1847,133 +1847,133 @@ def C11AtomicIsLockFree : Builtin {
 // GNU atomic builtins.
 def AtomicLoad : AtomicBuiltin {
   let Spellings = ["__atomic_load"];
-  let Attributes = [CustomTypeChecking];
+  let Attributes = [CustomTypeChecking, Constexpr];
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AaronBallman wrote:

When removing the constexpr-ness from these functions in C, please also make sure `__c11_atomic_is_lock_free` is tested as well; that was already marked `constexpr` and that might be a bug.

https://github.com/llvm/llvm-project/pull/98756