[libomptarget][nfc] Move three files under common, build them for amdgcn

[JonChesterfield]

Summary

[libomptarget][nfc] Move three files under common, build them for amdgcn

Change to reduction.cu to remove two dead includes, otherwise no code change.

[jdoerfert]

LGTM. Almost there, Yay!

openmp/libomptarget/deviceRTLs/amdgcn/CMakeLists.txt

 get_filename_component(devicertl_base_directory
   ${CMAKE_CURRENT_SOURCE_DIR}
   DIRECTORY)
 
 set(cuda_sources
   ${devicertl_base_directory}/common/src/cancel.cu
   ${devicertl_base_directory}/common/src/critical.cu
   ${devicertl_base_directory}/common/src/loop.cu
+  ${devicertl_base_directory}/common/src/libcall.cu
+  ${devicertl_base_directory}/common/src/reduction.cu
+  ${devicertl_base_directory}/common/src/omp_data.cu
   ${devicertl_base_directory}/common/src/omptarget.cu
   ${devicertl_base_directory}/common/src/parallel.cu
   ${devicertl_base_directory}/common/src/sync.cu
   ${devicertl_base_directory}/common/src/task.cu)
 
 set(h_files
   ${CMAKE_CURRENT_SOURCE_DIR}/src/amdgcn_interface.h
   ${CMAKE_CURRENT_SOURCE_DIR}/src/hip_atomics.h

openmp/libomptarget/deviceRTLs/common/src/libcall.cu

-//===------------ libcall.cu - NVPTX OpenMP user calls ----------- CUDA -*-===//
+//===------------ libcall.cu - OpenMP GPU user calls ------------- CUDA -*-===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
 // This file implements the OpenMP runtime functions that can be

openmp/libomptarget/deviceRTLs/common/src/omp_data.cu

-//===------------ omp_data.cu - NVPTX OpenMP GPU objects --------- CUDA -*-===//
+//===------------ omp_data.cu - OpenMP GPU objects --------------- CUDA -*-===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
 // This file contains the data objects used on the GPU device.

openmp/libomptarget/deviceRTLs/common/src/reduction.cu

-//===---- reduction.cu - NVPTX OpenMP reduction implementation ---- CUDA
-//-*-===//
+//===---- reduction.cu - GPU OpenMP reduction implementation ----- CUDA -*-===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
 // This file contains the implementation of reduction with KMPC interface.
 //
 //===----------------------------------------------------------------------===//
 
-#include <complex.h>
-#include <stdio.h>
-
 #include "common/omptarget.h"
 #include "target_impl.h"
 
 EXTERN
 void __kmpc_nvptx_end_reduce(int32_t global_tid) {}
 
 EXTERN
 void __kmpc_nvptx_end_reduce_nowait(int32_t global_tid) {}

openmp/libomptarget/deviceRTLs/nvptx/CMakeLists.txt

if(LIBOMPTARGET_DEP_CUDA_FOUND)
   # We really don't have any host code, so we don't need to care about
   # propagating host flags.
   set(CUDA_PROPAGATE_HOST_FLAGS OFF)
 
   set(cuda_src_files
       ${devicertl_common_directory}/src/cancel.cu
       ${devicertl_common_directory}/src/critical.cu
       src/data_sharing.cu
-      src/libcall.cu
+      ${devicertl_common_directory}/src/libcall.cu
       src/target_impl.cu
       ${devicertl_common_directory}/src/loop.cu
       ${devicertl_common_directory}/src/omptarget.cu
       ${devicertl_common_directory}/src/parallel.cu
-      src/reduction.cu
+      ${devicertl_common_directory}/src/reduction.cu
       ${devicertl_common_directory}/src/support.cu
       ${devicertl_common_directory}/src/sync.cu
       ${devicertl_common_directory}/src/task.cu
   )
 
-  set(omp_data_objects src/omp_data.cu)
+  set(omp_data_objects ${devicertl_common_directory}/src/omp_data.cu)
 
   # Get the compute capability the user requested or use SM_35 by default.
   # SM_35 is what clang uses by default.
   set(default_capabilities 35)
   if (DEFINED LIBOMPTARGET_NVPTX_COMPUTE_CAPABILITY)
     set(default_capabilities ${LIBOMPTARGET_NVPTX_COMPUTE_CAPABILITY})
     libomptarget_warning_say("LIBOMPTARGET_NVPTX_COMPUTE_CAPABILITY is deprecated, please use LIBOMPTARGET_NVPTX_COMPUTE_CAPABILITIES")
   endif()