[llvm] [OpenMP] Add explicit attributes to every function declaration (PR #122399)

[Shilei Tian via llvm-commits]

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@@ -26,22 +26,23 @@ namespace allocator {
 static uint64_t constexpr ALIGNMENT = 16;
 
 /// Initialize the allocator according to \p KernelEnvironment
-void init(bool IsSPMD, KernelEnvironmentTy &KernelEnvironment);
+OMP_ATTRS void init(bool IsSPMD, KernelEnvironmentTy &KernelEnvironment);
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shiltian wrote:

Did I miss anything here? I can't find where `OMP_ATTRS` is defined.

https://github.com/llvm/llvm-project/pull/122399