[llvm] [OFFLOAD] Add plugin with support for Intel oneAPI Level Zero (PR #158900)

[Alexey Sachkov via llvm-commits]

================
@@ -0,0 +1,69 @@
+if(NOT LIBOMPTARGET_DEP_LEVEL_ZERO_FOUND)
+return()
+endif()
+
+# Create the library and add the default arguments.
+add_target_library(omptarget.rtl.level_zero LEVEL_ZERO)
+
+set(LEVEL_ZERO_SRC_FILES
+        src/L0Context.cpp
+        src/L0Device.cpp
+        src/L0Kernel.cpp
+        src/L0Memory.cpp
+        src/L0Program.cpp
+        src/L0Plugin.cpp
+        src/L0Program.cpp
+        src/L0Options.cpp
+)
+list(APPEND LEVEL_ZERO_SRC_FILES
+        src/OmpWrapper.cpp
+)
+
+target_sources(omptarget.rtl.level_zero PRIVATE
+   ${LEVEL_ZERO_SRC_FILES}
+)
+
+target_include_directories(omptarget.rtl.level_zero PRIVATE
+      ${CMAKE_CURRENT_SOURCE_DIR}/include
+      ${CMAKE_CURRENT_SOURCE_DIR}/src
+)
----------------
AlexeySachkov wrote:

For my own education, what is LLVM's policy on CMake files formatting? Indentation is all over the place in this file, should we at least unify it within the file?

https://github.com/llvm/llvm-project/pull/158900