================
@@ -3577,6 +3577,29 @@ An error will be given if:
}];
}
+def AMDGCNAVDocs : Documentation {
+ let Category = DocCatAMDGPUAttributes;
+ let Content = [{
+This attribute controls MakeAvailable and MakeVisible cache operations on
+AMDGPU synchronization operations. It takes a string argument specifying the
+mode.
+
+When placed on a statement containing a C/C++ atomic builtin call, the
+resulting atomic or fence instruction will carry ``!mmra !{!"amdgcn-av",
+!"<mode>"}`` metadata.
+
+The supported modes are:
+
+- ``"none"``: Skip cache writeback (on release) and cache invalidation (on
+ acquire), while preserving memory ordering (waits).
----------------
ritter-x2a wrote:
That characterization is quite different from the [semantics-oriented
documentation](https://llvm.org/docs/AMDGPUMemoryModel.html) we have for
MakeAvailable and MakeVisible.
Should there be a link to that documentation in this doc entry, and should this
at least **also** say that `"none"` skips MakeAvailable and MakeVisible
operations on release/acquire?
https://github.com/llvm/llvm-project/pull/199622
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