[clang] [CIR][HIP] Support managed variables (PR #230910)

[Arseniy Obolenskiy via cfe-commits]

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@@ -3262,6 +3262,15 @@ void LoweringPreparePass::buildCUDARegisterVars(cir::CIRBaseBuilderTy &builder,
       FuncType::get({voidPtrPtrTy, voidPtrTy, voidPtrTy, voidPtrTy, intTy,
                      sizeTy, intTy, intTy},
                     voidTy));
+  // void __hipRegisterManagedVar(void **fatbinHandle, char *managedVar,
+  //                              char *var, const char *deviceName,
+  //                              size_t size, unsigned align);
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aobolensk wrote:

not really, see above, it is HIP only 

https://github.com/llvm/llvm-project/pull/230910