[clang] [clang][CodeGen][SPIR-V] Fix incorrect SYCL usage, implement missing interface (PR #109415)

[Arvind Sudarsanam via cfe-commits]

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@@ -188,6 +190,28 @@ void SPIRVTargetCodeGenInfo::setCUDAKernelCallingConvention(
   }
 }
 
+LangAS
+SPIRVTargetCodeGenInfo::getGlobalVarAddressSpace(CodeGenModule &CGM,
+                                                 const VarDecl *D) const {
+  assert(!CGM.getLangOpts().OpenCL &&
+         !(CGM.getLangOpts().CUDA && CGM.getLangOpts().CUDAIsDevice) &&
+         "Address space agnostic languages only");
+  // If we're here it means that we're using the SPIRDefIsGen ASMap, hence for
+  // the global AS we can rely on either cuda_device or sycl_global to be
+  // correct; however, since this is not a CUDA Device context, we use
+  // sycl_global to prevent confusion with the assertion.
+  LangAS DefaultGlobalAS = getLangASFromTargetAS(
+      CGM.getContext().getTargetAddressSpace(LangAS::sycl_global));
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asudarsa wrote:

Are there any tests available to check this behavior?

Thanks

https://github.com/llvm/llvm-project/pull/109415