[SYCL][Driver][HIP] Do not define __CUDA_ARCH__ for HIP-AMD targets

Author: GeorgeWeb

clang/lib/Basic/Targets/AMDGPU.cpp

@@ -309,7 +309,6 @@ void AMDGPUTargetInfo::getTargetDefines(const LangOptions &Opts,
                         Twine("\"") + Twine(CanonName) + Twine("\""));
     Builder.defineMacro("__amdgcn_target_id__",
                         Twine("\"") + Twine(*getTargetID()) + Twine("\""));
-    Builder.defineMacro("__CUDA_ARCH__", "0");
     for (auto F : getAllPossibleTargetIDFeatures(getTriple(), CanonName)) {
       auto Loc = OffloadArchFeatures.find(F);
       if (Loc != OffloadArchFeatures.end()) {

clang/test/Preprocessor/sycl-macro.cpp

@@ -35,6 +35,6 @@
 // CHECK-CUDA:#define __SYCL_CUDA_ARCH__ 800
 // CHECK-CUDA-NOT:#define __CUDA_ARCH__ 800
 
-// CHECK-HIP:#define __CUDA_ARCH__ 0
+// CHECK-HIP-NOT:#define __CUDA_ARCH__ [[ARCH:[0-9]+]]
 
 // CHECK-CUDA-FEATURE:#define __CUDA_ARCH_FEAT_SM90_ALL 1