Add OpenCL runtime

CMakeLists.txt

@@ -172,6 +172,7 @@ include(HandleLLVMOptions)
 
 set(IMEX_INCLUDE_TESTS 1 CACHE BOOL "Include targets for IMEX tests")
 set(IMEX_ENABLE_SYCL_RUNTIME 0 CACHE BOOL "Enable the Sycl Runtime")
+set(IMEX_ENABLE_OPENCL_RUNTIME 0 CACHE BOOL "Enable the OpenCL Runtime")
 set(IMEX_ENABLE_L0_RUNTIME 0 CACHE BOOL "Enable the Level Zero Runtime")
 set(IMEX_ENABLE_BENCHMARK 0 CACHE BOOL "Enable the IMEX Benchmark (Depending on SYCL Runtime)")
 # Useful when building IMEX as an LLVM external project.
@@ -192,6 +193,12 @@ else ()
     set(IMEX_ENABLE_SYCL_RUNTIME 0)
 endif()
 
+if (IMEX_ENABLE_OPENCL_RUNTIME)
+    set(IMEX_ENABLE_OPENCL_RUNTIME 1)
+else ()
+    set(IMEX_ENABLE_OPENCL_RUNTIME 0)
+endif()
+
 if (IMEX_ENABLE_L0_RUNTIME)
     set(IMEX_ENABLE_L0_RUNTIME 1)
 else ()

README.md

@@ -79,6 +79,7 @@ cmake -G Ninja -B build -S llvm \
 # For GPU support pass thes cmake variables to enable the required runtime libraries
 #  -DIMEX_ENABLE_L0_RUNTIME=1
 #  -DIMEX_ENABLE_SYCL_RUNTIME=1
+#  -DIMEX_ENABLE_OPENCL_RUNTIME=1
 # Additional if using a non system wide Level Zero Loader built from source
 #  -DLEVEL_ZERO_DIR=/PATH_TO/level-zero-install
 
@@ -107,6 +108,7 @@ cmake -G Ninja -B build -S . \
 # For GPU support pass thes cmake variables to enable the required runtime libraries
 #  -DIMEX_ENABLE_L0_RUNTIME=1
 #  -DIMEX_ENABLE_SYCL_RUNTIME=1
+#  -DIMEX_ENABLE_OPENCL_RUNTIME=1
 # Additional if using a non system wide Level Zero Loader built from source
 #  -DLEVEL_ZERO_DIR=/PATH_TO/level-zero-install
 
@@ -127,6 +129,7 @@ cmake -G Ninja -B build -S . \
 # For GPU support pass thes cmake variables to enable the required runtime libraries
 #  -DIMEX_ENABLE_L0_RUNTIME=1
 #  -DIMEX_ENABLE_SYCL_RUNTIME=1
+#  -DIMEX_ENABLE_OPENCL_RUNTIME=1
 # Additional if using a non system wide Level Zero Loader built from source
 #  -DLEVEL_ZERO_DIR=/PATH_TO/level-zero-install
 

lib/ExecutionEngine/CMakeLists.txt

@@ -6,6 +6,10 @@ if(IMEX_ENABLE_SYCL_RUNTIME)
     add_subdirectory(SYCLRUNTIME)
 endif()
 
+if(IMEX_ENABLE_OPENCL_RUNTIME)
+    add_subdirectory(OPENCLRUNTIME)
+endif()
+
 add_mlir_library(imex_runner_utils
   SHARED
   ImexRunnerUtils.cpp

lib/ExecutionEngine/OPENCLRUNTIME/CMakeLists.txt

@@ -0,0 +1,44 @@
+# Copyright 2024 Intel Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set(CMAKE_CXX_FLAGS " ${CMAKE_CXX_FLAGS} -Wno-return-type -Wno-cast-qual")
+
+find_package(OpenCL REQUIRED)
+
+if(NOT OpenCL_FOUND)
+    message(FATAL_ERROR "OpenCL not found.")
+endif()
+
+add_mlir_library(opencl-runtime
+    SHARED
+    OpenCLRuntimeWrappers.cpp
+
+    EXCLUDE_FROM_LIBMLIR
+  )
+
+check_cxx_compiler_flag("-frtti" CXX_HAS_FRTTI_FLAG)
+if(NOT CXX_HAS_FRTTI_FLAG)
+    message(FATAL_ERROR "CXX compiler does not accept flag -frtti")
+endif()
+target_compile_options (opencl-runtime PUBLIC -fexceptions -frtti)
+
+target_include_directories(opencl-runtime PRIVATE
+    ${MLIR_INCLUDE_DIRS}
+    ${OpenCL_INCLUDE_DIRS}
+    )
+
+message(STATUS "OpenCL Libraries: ${OpenCL_LIBRARIES}")
+target_link_libraries(opencl-runtime PRIVATE ${OpenCL_LIBRARIES})
+
+# set_property(TARGET opencl-runtime APPEND PROPERTY BUILD_RPATH "${OpenCL_LIBRARY}")