[OpenMP][Offload][AMDGPU] Remove automatic overlay for MI200

Change-Id: I98fdf69d32307ece17083722818b658a949fbe06

Author: hidekisaito

clang/lib/Driver/ToolChains/Clang.cpp

@@ -1146,17 +1146,6 @@ void Clang::AddPreprocessingOptions(Compilation &C, const JobAction &JA,
     CmdArgs.push_back("__clang_openmp_device_functions.h");
   }
 
-  // When host compiling with OpenMP or HIP offloading include
-  // the host overlay definitions.
-  if (JA.isHostOffloading(Action::OFK_OpenMP)) {
-    SmallString<128> P(D.ResourceDir);
-    llvm::sys::path::append(P, "include");
-    llvm::sys::path::append(P, "openmp_wrappers");
-    llvm::sys::path::append(P, "hip_host_overlay.h");
-    CmdArgs.push_back("-include");
-    CmdArgs.push_back(Args.MakeArgString(P));
-  }
-
   // Add include for either -fopenmp= or -fopenmp
   if (Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
                    options::OPT_fno_openmp, false)){

clang/lib/Headers/CMakeLists.txt

@@ -365,7 +365,6 @@ set(openmp_wrapper_files
   openmp_wrappers/complex_cmath.h
   openmp_wrappers/new
   openmp_wrappers/hip/hip_runtime.h
-  openmp_wrappers/hip_host_overlay.h
 )
 
 set(llvm_offload_wrapper_files