[clang] [clang] Check validity of SYCL device target (PR #172366)

[Mariya Podchishchaeva via cfe-commits]

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@@ -118,6 +118,12 @@ bool CompilerInstance::createTarget() {
   if (!hasTarget())
     return false;
 
+  if (getLangOpts().SYCLIsDevice && !getTarget().isValidSYCLDeviceTarget()) {
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Fznamznon wrote:

>  I could modify isGPU() to include spir but I am not sure if that is functionally correct. Would you know?

I've seen this TODO https://github.com/llvm/llvm-project/blob/6238ce14a8f28246c4dc5775165bd04200005559/clang/lib/Sema/SemaDeclAttr.cpp#L5538
so that is probably fine.

https://github.com/llvm/llvm-project/pull/172366