[clang] [llvm] [clang-sycl-linker] Add per-kernel device code splitting (PR #195362)

[Nick Sarnie via cfe-commits]

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@@ -461,6 +468,107 @@ static Error runAOTCompile(StringRef InputFile, StringRef OutputFile,
   return createStringError(inconvertibleErrorCode(), "Unsupported arch");
 }
 
+/// SYCL device code module split mode.
+enum IRSplitMode {
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sarnex wrote:

nit: could we use `enum class`?

https://github.com/llvm/llvm-project/pull/195362