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

[Steffen Larsen via cfe-commits]

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@@ -0,0 +1,97 @@
+// RUN: echo -n "GPU binary would be here." > %t
+
+// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -fcuda-is-device -fclangir \
+// RUN:            -x hip -emit-cir %s -o %t.dev.cir
+// RUN: FileCheck --check-prefix=CIR-DEV --input-file=%t.dev.cir %s
+
+// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -fcuda-is-device -fclangir \
+// RUN:            -x hip -emit-llvm %s -o %t.dev.cir.ll
+// RUN: FileCheck --check-prefix=DEV --input-file=%t.dev.cir.ll %s
+
+// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -fcuda-is-device \
+// RUN:            -x hip -emit-llvm %s -o %t.dev.ll
+// RUN: FileCheck --check-prefix=DEV --input-file=%t.dev.ll %s
+
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir \
+// RUN:            -x hip -fhip-new-launch-api -fcuda-include-gpubinary %t \
+// RUN:            -emit-cir %s -o %t.host.cir
+// RUN: FileCheck --check-prefix=CIR-HOST --input-file=%t.host.cir %s
+
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir \
+// RUN:            -x hip -fhip-new-launch-api -fcuda-include-gpubinary %t \
+// RUN:            -emit-llvm %s -o %t.host.cir.ll
+// RUN: FileCheck --check-prefix=HOST --input-file=%t.host.cir.ll %s
+
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu \
+// RUN:            -x hip -fhip-new-launch-api -fcuda-include-gpubinary %t \
+// RUN:            -emit-llvm %s -o %t.host.ll
+// RUN: FileCheck --check-prefix=HOST --input-file=%t.host.ll %s
+
+#include "../CodeGenCUDA/Inputs/cuda.h"
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steffenlarsen wrote:

Hmm, that is indeed a little odd. Testing in places like clang/test/SemaCUDA/managed-var.cu seems to also only be HIP, but the [CUDA docs](https://docs.nvidia.com/cuda/cuda-programming-guide/05-appendices/cpp-language-extensions.html#memory-space-specifiers) mention the specifier as well. I'm not sure the relation here, but I can indeed not find any CUDA testing for it.

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