[clang] [clang] Add isOffloadingTarget function to LangOpts (PR #126956)

[Nick Sarnie via cfe-commits]

================
@@ -4357,6 +4357,10 @@ bool CompilerInvocation::ParseLangArgs(LangOptions &Opts, ArgList &Args,
       Opts.OpenACCMacroOverride = A->getValue();
   }
 
+  Opts.IsOffloadingTarget =
+      (Opts.OpenMPIsTargetDevice || Opts.SYCLIsDevice || Opts.CUDAIsDevice) &&
----------------
sarnex wrote:

Sorry, what would the two flags be?  `IsOffloading` and `IsGPU`?

https://github.com/llvm/llvm-project/pull/126956