GPU: Move GPUReconstructionHIP to hip language (#12255)

* Move GPUReconstructionHIP to hip language

* Apply @davidrohr 's patch

Author: mconcas

Detectors/ITSMFT/ITS/tracking/GPU/hip/CMakeLists.txt

@@ -11,7 +11,7 @@
 
 if(HIP_ENABLED)
   message(STATUS "Building ITS HIP tracker")
-  set(CMAKE_HIP_FLAGS "${CMAKE_HIP_FLAGS} ${O2_HIP_CMAKE_CXX_FLAGS} -fgpu-rdc")
+  set(CMAKE_HIP_FLAGS "${CMAKE_HIP_FLAGS} -fgpu-rdc")
   o2_add_hipified_library(ITStrackingHIP
                  SOURCES ../cuda/ClusterLinesGPU.cu
                          ../cuda/Context.cu

GPU/GPUTracking/Base/hip/CMakeLists.txt

@@ -11,18 +11,15 @@
 
 set(MODULE GPUTrackingHIP)
 
-set(CMAKE_CXX_COMPILER ${hip_HIPCC_EXECUTABLE})
-set(CMAKE_CXX_EXTENSIONS OFF)
-
-#setting flags as a global option for all HIP targets.
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${O2_HIP_CMAKE_CXX_FLAGS} -fno-gpu-rdc")
+# Setting flags as a global option for all HIP targets.
+set(CMAKE_HIP_FLAGS "${CMAKE_HIP_FLAGS} -fno-gpu-rdc")
 if(DEFINED HIP_AMDGPUTARGET)
   set(TMP_TARGET "(GPU Target ${HIP_AMDGPUTARGET})")
 endif()
 
 message(STATUS "Building GPUTracking with HIP support ${TMP_TARGET}")
 
-set(SRCS GPUReconstructionHIP.hip.cxx)
+set(SRCS GPUReconstructionHIP.hip)
 set(HDRS GPUReconstructionHIP.h GPUReconstructionHIPInternals.h GPUReconstructionHIPIncludes.h HIPThrustHelpers.h)
 
 if(ALIGPU_BUILD_TYPE STREQUAL "O2")

…ng/Base/hip/GPUReconstructionHIP.hip.cxx …acking/Base/hip/GPUReconstructionHIP.hipGPU/GPUTracking/Base/hip/GPUReconstructionHIP.hip.cxx renamed to GPU/GPUTracking/Base/hip/GPUReconstructionHIP.hip GPU/GPUTracking/Base/hip/GPUReconstructionHIP.hip.cxx renamed to GPU/GPUTracking/Base/hip/GPUReconstructionHIP.hip

@@ -10,7 +10,7 @@
 # or submit itself to any jurisdiction.
 
 message(STATUS "Building GPU HIP benchmark")
-set(CMAKE_HIP_FLAGS "${CMAKE_HIP_FLAGS} ${O2_HIP_CMAKE_CXX_FLAGS} -fgpu-rdc -isystem /opt/rocm/include -fPIC")
+set(CMAKE_HIP_FLAGS "${CMAKE_HIP_FLAGS} -fgpu-rdc -isystem /opt/rocm/include -fPIC")
 
 o2_add_hipified_executable(gpu-memory-benchmark-hip
                            SOURCES ../cuda/benchmark.cu

GPU/GPUbenchmark/hip/CMakeLists.txt

@@ -63,6 +63,7 @@ function(set_target_hip_arch target)
 endfunction()
 
 # Detect and enable CUDA
+STRING(REGEX REPLACE "\-std=[^ ]*" "" O2_GPU_CMAKE_CXX_FLAGS_NOSTD ${CMAKE_CXX_FLAGS}) # Need to strip c++17 imposed by alidist defaults
 if(ENABLE_CUDA)
   set(CMAKE_CUDA_STANDARD 17)
   set(CMAKE_CUDA_STANDARD_REQUIRED TRUE)
@@ -106,9 +107,7 @@ if(ENABLE_CUDA)
     endif()
   endif()
   if(CMAKE_CUDA_COMPILER)
-    # Forward CXX flags to CUDA C++ Host compiler (for warnings, gdb, etc.)
-    STRING(REGEX REPLACE "\-std=[^ ]*" "" CMAKE_CXX_FLAGS_NOSTD ${CMAKE_CXX_FLAGS}) # Need to strip c++17 imposed by alidist defaults
-    set(CMAKE_CUDA_FLAGS "${CMAKE_CUDA_FLAGS} -Xcompiler \"${CMAKE_CXX_FLAGS_NOSTD}\" --expt-relaxed-constexpr --extended-lambda --allow-unsupported-compiler -Xptxas -v")
+    set(CMAKE_CUDA_FLAGS "${CMAKE_CUDA_FLAGS} -Xcompiler \"${O2_GPU_CMAKE_CXX_FLAGS_NOSTD}\" --expt-relaxed-constexpr --extended-lambda --allow-unsupported-compiler -Xptxas -v")
     set(CMAKE_CUDA_FLAGS_DEBUG "${CMAKE_CUDA_FLAGS_DEBUG} -lineinfo -Xcompiler \"${CMAKE_CXX_FLAGS_DEBUG}\" -Xptxas -O0 -Xcompiler -O0")
     if(NOT CMAKE_BUILD_TYPE STREQUAL "DEBUG")
       set(CMAKE_CUDA_FLAGS_${CMAKE_BUILD_TYPE} "${CMAKE_CUDA_FLAGS_${CMAKE_BUILD_TYPE}} -Xcompiler \"${CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE}}\" -Xptxas -O4 -Xcompiler -O4")
@@ -262,7 +261,8 @@ if(ENABLE_HIP)
       string(REGEX REPLACE "(.*)bin/c\\+\\+\$" "\\1" HIP_GCC_TOOLCHAIN_PATH "${CMAKE_CXX_COMPILER}")
       set(O2_HIP_CMAKE_CXX_FLAGS "${O2_HIP_CMAKE_CXX_FLAGS} --gcc-toolchain=${HIP_GCC_TOOLCHAIN_PATH}") # -ffast-math disabled, since apparently it leads to miscompilation and crashes in FollowLooper kernel
     endif()
-    set(CMAKE_HIP_FLAGS "${CMAKE_HIP_FLAGS} ${O2_HIP_CMAKE_CXX_FLAGS}")
+    set(CMAKE_HIP_FLAGS "${O2_GPU_CMAKE_CXX_FLAGS_NOSTD} ${CMAKE_HIP_FLAGS} ${O2_HIP_CMAKE_CXX_FLAGS}")
+    set(CMAKE_HIP_FLAGS_${CMAKE_BUILD_TYPE} "${CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE}} ${CMAKE_HIP_FLAGS_${CMAKE_BUILD_TYPE}}")
   else()
     set(HIP_ENABLED OFF)
   endif()