[clang] Revert "[AMDGPU][OpenMP] Do not attach -fcuda-is-device flag for AMDGPU OpenMP" (PR #97531)

[Dominik Adamski via cfe-commits]

https://github.com/DominikAdamski created https://github.com/llvm/llvm-project/pull/97531

Reverts llvm/llvm-project#96909

It breaks CI: https://gitlab.e4s.io/uo-public/llvm-openmp-offloading/-/jobs/283716 

>From f165b2279dc663cee7dc31d8213afb8c8fb48ab7 Mon Sep 17 00:00:00 2001
From: Dominik Adamski <dominik.adamski at amd.com>
Date: Wed, 3 Jul 2024 09:06:47 +0200
Subject: [PATCH] =?UTF-8?q?Revert=20"[AMDGPU][OpenMP]=20Do=20not=20attach?=
 =?UTF-8?q?=20-fcuda-is-device=20flag=20for=20AMDGPU=20OpenM=E2=80=A6"?=
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This reverts commit 8bb00cb160830ec8f6029c2aae79d3e46b04b99c.
---
 clang/lib/Driver/ToolChains/AMDGPUOpenMP.cpp | 2 ++
 clang/test/Driver/amdgpu-openmp-toolchain.c  | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/clang/lib/Driver/ToolChains/AMDGPUOpenMP.cpp b/clang/lib/Driver/ToolChains/AMDGPUOpenMP.cpp
index b75d400e6ce91..1c0fb4babe3a5 100644
--- a/clang/lib/Driver/ToolChains/AMDGPUOpenMP.cpp
+++ b/clang/lib/Driver/ToolChains/AMDGPUOpenMP.cpp
@@ -47,6 +47,8 @@ void AMDGPUOpenMPToolChain::addClangTargetOptions(
   assert(DeviceOffloadingKind == Action::OFK_OpenMP &&
          "Only OpenMP offloading kinds are supported.");
 
+  CC1Args.push_back("-fcuda-is-device");
+
   if (DriverArgs.hasArg(options::OPT_nogpulib))
     return;
 
diff --git a/clang/test/Driver/amdgpu-openmp-toolchain.c b/clang/test/Driver/amdgpu-openmp-toolchain.c
index a153c4afb0ce8..49af04acc4639 100644
--- a/clang/test/Driver/amdgpu-openmp-toolchain.c
+++ b/clang/test/Driver/amdgpu-openmp-toolchain.c
@@ -7,7 +7,7 @@
 
 // verify the tools invocations
 // CHECK: "-cc1" "-triple" "x86_64-unknown-linux-gnu"{{.*}}"-emit-llvm-bc"{{.*}}"-x" "c"
-// CHECK: "-cc1" "-triple" "amdgcn-amd-amdhsa" "-aux-triple" "x86_64-unknown-linux-gnu"{{.*}}"-target-cpu" "gfx906"
+// CHECK: "-cc1" "-triple" "amdgcn-amd-amdhsa" "-aux-triple" "x86_64-unknown-linux-gnu"{{.*}}"-fcuda-is-device"{{.*}}"-target-cpu" "gfx906"
 // CHECK: "-cc1" "-triple" "x86_64-unknown-linux-gnu"{{.*}}"-emit-obj"
 // CHECK: clang-linker-wrapper{{.*}} "-o" "a.out"