[clang] [CIR] Address Space support for GlobalOps (PR #179082)

[Andy Kaylor via cfe-commits]

================
@@ -662,6 +665,39 @@ std::optional<cir::SourceLanguage> CIRGenModule::getCIRSourceLanguage() const {
   return std::nullopt;
 }
 
+LangAS CIRGenModule::getGlobalVarAddressSpace(const VarDecl *d) {
+  if (langOpts.OpenCL) {
+    LangAS as = d ? d->getType().getAddressSpace() : LangAS::opencl_global;
+    assert(as == LangAS::opencl_global || as == LangAS::opencl_global_device ||
+           as == LangAS::opencl_global_host || as == LangAS::opencl_constant ||
+           as == LangAS::opencl_local || as >= LangAS::FirstTargetAddressSpace);
+    return as;
+  }
+
+  if (langOpts.SYCLIsDevice &&
+      (!d || d->getType().getAddressSpace() == LangAS::Default))
+    llvm_unreachable("NYI");
+
+  if (langOpts.CUDA && langOpts.CUDAIsDevice) {
+    if (d) {
+      if (d->hasAttr<CUDAConstantAttr>())
+        return LangAS::cuda_constant;
+      if (d->hasAttr<CUDASharedAttr>())
+        return LangAS::cuda_shared;
+      if (d->hasAttr<CUDADeviceAttr>())
+        return LangAS::cuda_device;
+      if (d->getType().isConstQualified())
+        return LangAS::cuda_constant;
+    }
+    return LangAS::cuda_device;
+  }
+
+  if (langOpts.OpenMP)
+    llvm_unreachable("NYI");
----------------
andykaylor wrote:

```suggestion
    errorNYI("OpenMP global address space");
```

https://github.com/llvm/llvm-project/pull/179082