[HIP] define __CUDA_ARCH_=1 for amdgcn targets

Differential Revision: https://reviews.llvm.org/D45277

llvm-svn: 329420

diff --git a/clang/lib/Basic/Targets.cpp b/clang/lib/Basic/Targets.cpp
index 4311095..f468588 100644 (file)
--- a/clang/lib/Basic/Targets.cpp
+++ b/clang/lib/Basic/Targets.cpp
@@ -158,7 +158,7 @@ void defineCudaArchMacro(CudaArch GPU, clang::MacroBuilder &Builder) {
     case CudaArch::GFX810:
     case CudaArch::GFX900:
     case CudaArch::GFX902:
-      return "320";
+      return "1";
     case CudaArch::UNKNOWN:
       llvm_unreachable("unhandled Cuda/HIP Arch");
     }