================
@@ -408,10 +408,14 @@ class SubjectList<list<AttrSubject> subjects, SubjectDiag
diag = WarnDiag,
string CustomDiag = customDiag;
}
-class LangOpt<string name, code customCode = [{}]> {
+class LangOpt<string name, code customCode = [{}], bit silentlyIgnore = 0> {
// The language option to test; ignored when custom code is supplied.
string Name = name;
+ // If set to 1, the attribute is accepted but is silently ignored. This is
+ // useful in multi-compilation situations like SYCL.
+ bit SilentlyIgnore = silentlyIgnore;
+
----------------
tahonermann wrote:
None of the proposed changes query this bit (downstream Intel repos have
additional code in `GenerateTestExpression()` in
`clang/utils/TableGen/ClangAttrEmitter.cpp` that checks it).
I think we should hold off on adding this for now. Or, we should add it via a
separate PR that justifies its use based on similar existing utility for CUDA,
HIP, HLSL, etc...
https://github.com/llvm/llvm-project/pull/140282
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