[clang] [llvm] [Offload][SYCL] Refactor OffloadKind implementation (PR #135809)

[Arvind Sudarsanam via cfe-commits]

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@@ -923,10 +923,9 @@ Expected<SmallVector<StringRef>> linkAndWrapDeviceFiles(
         });
     auto LinkerArgs = getLinkerArgs(Input, BaseArgs);
 
-    DenseSet<OffloadKind> ActiveOffloadKinds;
+    uint16_t ActiveOffloadKindMask = 0u;
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asudarsa wrote:

I think it is a good optimization to have (16-bit mask instead of a Set). Also, 
it will be easier to pass the mask to callee function when introducing support 
for SYCL in my original PR.

Thanks

https://github.com/llvm/llvm-project/pull/135809
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