[SYCL] next portion of the tests (intel#33)

* Add/move tests covering different kernel param types
* Add test covering loading kernel images from file
* Added kernel/program compile/build tests
* Add multi_ptr test
* add function pointer tests
* add functor tests
* test for context with multiple devices
* XFAIL kernel and program tests failing on CUDA

Author: vladimirlaz

SYCL/CMakeLists.txt

@@ -1,3 +1,7 @@
+if( NOT OpenCL_LIBRARY )
+  find_package(OpenCL)
+endif()
+
 configure_file("${CMAKE_CURRENT_SOURCE_DIR}/lit.site.cfg.py.in" "${CMAKE_CURRENT_BINARY_DIR}/lit.site.cfg")
 
 if(CHECK_SYCL_ALL)

SYCL/lit.cfg.py

@@ -69,7 +69,9 @@
 
 config.substitutions.append( ('%sycl_libs_dir',  config.sycl_libs_dir ) )
 config.substitutions.append( ('%sycl_include',  config.sycl_include ) )
-config.substitutions.append( ('%opencl_libs_dir',  config.opencl_libs_dir) )
+if config.opencl_libs_dir:
+  config.substitutions.append( ('%opencl_libs_dir',  config.opencl_libs_dir) )
+  config.available_features.add('opencl_icd')
 config.substitutions.append( ('%opencl_include_dir',  config.opencl_include_dir) )
 
 llvm_config.use_clang()

SYCL/lit.site.cfg.py.in

@@ -16,7 +16,9 @@ config.sycl_obj_root = "@CMAKE_CURRENT_BINARY_DIR@"
 config.sycl_libs_dir =  os.path.join(config.dpcpp_root_dir, ('bin' if platform.system() == "Windows" else 'lib'))
 config.target_triple = "x86_64-unknown-unknown-gnu"
 config.host_triple = "x86_64-unknown-unknown-gnu" 
-config.opencl_libs_dir = config.sycl_libs_dir
+
+config.opencl_libs_dir = (os.path.dirname("@OpenCL_LIBRARY@") if "@OpenCL_LIBRARY@" else "")
+
 config.opencl_include_dir = config.sycl_include
 config.target_devices = lit_config.params.get("target_devices", "@SYCL_TARGET_DEVICES@")
 config.sycl_be = lit_config.params.get("sycl_be", "@SYCL_BE@")