Move _tensor_impl extensions and use it for dpnp

CMakeLists.txt

@@ -336,3 +336,4 @@ if(DEFINED SKBUILD)
 endif()
 
 add_subdirectory(dpnp)
+add_subdirectory(dpctl_ext)

dpctl_ext/CMakeLists.txt

@@ -0,0 +1,205 @@
+# -*- coding: utf-8 -*-
+# *****************************************************************************
+# Copyright (c) 2026, Intel Corporation
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+# - Redistributions of source code must retain the above copyright notice,
+#   this list of conditions and the following disclaimer.
+# - Redistributions in binary form must reproduce the above copyright notice,
+#   this list of conditions and the following disclaimer in the documentation
+#   and/or other materials provided with the distribution.
+# - Neither the name of the copyright holder nor the names of its contributors
+#   may be used to endorse or promote products derived from this software
+#   without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+# THE POSSIBILITY OF SUCH DAMAGE.
+# *****************************************************************************
+
+find_package(Python REQUIRED COMPONENTS NumPy)
+
+# -t is to only Cythonize sources with timestamps newer than existing CXX files (if present)
+# -w is to set working directory (and correctly set __pyx_f[] array of filenames)
+set(CYTHON_FLAGS "-t -w \"${CMAKE_SOURCE_DIR}\"")
+find_package(Cython REQUIRED)
+
+if(WIN32)
+    string(
+        CONCAT WARNING_FLAGS
+        "-Wall "
+        "-Wextra "
+        "-Winit-self "
+        "-Wunused-function "
+        "-Wuninitialized "
+        "-Wmissing-declarations "
+        "-Wstrict-prototypes "
+        "-Wno-unused-parameter "
+    )
+    string(CONCAT SDL_FLAGS "/GS " "/DynamicBase ")
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /Ox ${WARNING_FLAGS} ${SDL_FLAGS}")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /Ox ${WARNING_FLAGS} ${SDL_FLAGS}")
+    set(CMAKE_C_FLAGS_DEBUG
+        "${CMAKE_C_FLAGS_DEBUG} ${WARNING_FLAGS} ${SDL_FLAGS} -O0 -g1 -DDEBUG -Xsycl-target-frontend=spir64 \"-g0\""
+    )
+    set(CMAKE_CXX_FLAGS_DEBUG
+        "${CMAKE_CXX_FLAGS_DEBUG} ${WARNING_FLAGS} ${SDL_FLAGS} -O0 -g1 -DDEBUG -Xsycl-target-frontend=spir64 \"-g0\""
+    )
+    set(CMAKE_C_FLAGS_COVERAGE
+        "${CMAKE_C_FLAGS_DEBUG} ${WARNING_FLAGS} ${SDL_FLAGS} -O1 -g1 -DDEBUG"
+    )
+    set(CMAKE_CXX_FLAGS_COVERAGE
+        "${CMAKE_CXX_FLAGS_DEBUG} ${WARNING_FLAGS} ${SDL_FLAGS} -O1 -g1 -DDEBUG"
+    )
+    set(CMAKE_MODULE_LINKER_FLAGS_COVERAGE "${CMAKE_MODULE_LINKER_FLAGS_DEBUG}")
+    set(DPCTL_LDFLAGS "/NXCompat;/DynamicBase")
+    mark_as_advanced(
+        CMAKE_CXX_FLAGS_COVERAGE
+        CMAKE_C_FLAGS_COVERAGE
+        CMAKE_MODULE_LINKER_FLAGS_COVERAGE
+    )
+elseif(UNIX)
+    string(
+        CONCAT WARNING_FLAGS
+        "-Wall "
+        "-Wextra "
+        "-Winit-self "
+        "-Wunused-function "
+        "-Wuninitialized "
+        "-Wmissing-declarations "
+        "-Wstrict-prototypes "
+        "-Wno-unused-parameter "
+        "-fdiagnostics-color=auto "
+    )
+    string(
+        CONCAT SDL_FLAGS
+        "-fstack-protector "
+        "-fstack-protector-all "
+        "-fpic "
+        "-fPIC "
+        "-D_FORTIFY_SOURCE=2 "
+        "-Wformat "
+        "-Wformat-security "
+        #       "-fno-strict-overflow "    # no-strict-overflow is implied by -fwrapv
+        "-fno-delete-null-pointer-checks "
+        "-fwrapv "
+    )
+    string(CONCAT CFLAGS "${WARNING_FLAGS}" "${SDL_FLAGS}")
+    string(CONCAT CXXFLAGS "${WARNING_FLAGS}" "${SDL_FLAGS}")
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O3 ${CFLAGS}")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O3 ${CXXFLAGS}")
+    set(CMAKE_C_FLAGS_DEBUG
+        "${CMAKE_C_FLAGS_DEBUG} ${CFLAGS} -O0 -g -DDEBUG -Xsycl-target-frontend=spir64 \"-g0\""
+    )
+    set(CMAKE_CXX_FLAGS_DEBUG
+        "${CMAKE_CXX_FLAGS_DEBUG} ${CXXFLAGS} -O0 -g -DDEBUG -Xsycl-target-frontend=spir64 \"-g0\""
+    )
+    set(CMAKE_C_FLAGS_COVERAGE "${CMAKE_C_FLAGS_DEBUG} ${CFLAGS} -O1 -g1 -DDEBUG")
+    set(CMAKE_CXX_FLAGS_COVERAGE "${CMAKE_CXX_FLAGS_DEBUG} ${CXXFLAGS} -O1 -g1 -DDEBUG")
+    set(CMAKE_MODULE_LINKER_FLAGS_COVERAGE "${CMAKE_MODULE_LINKER_FLAGS_DEBUG}")
+    set(DPCTL_LDFLAGS "-z,noexecstack,-z,relro,-z,now")
+    mark_as_advanced(
+        CMAKE_CXX_FLAGS_COVERAGE
+        CMAKE_C_FLAGS_COVERAGE
+        CMAKE_MODULE_LINKER_FLAGS_COVERAGE
+    )
+else()
+    message(FATAL_ERROR "Unsupported system.")
+endif()
+
+# at build time create include/ directory and copy header files over
+set(DPCTL_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/include)
+
+set(CMAKE_INSTALL_RPATH "$ORIGIN")
+
+function(build_dpctl_ext _trgt _src _dest)
+    set(options SYCL)
+    cmake_parse_arguments(BUILD_DPCTL_EXT "${options}" "RELATIVE_PATH" "" ${ARGN})
+    add_cython_target(${_trgt} ${_src} CXX OUTPUT_VAR _generated_src)
+    set(_cythonize_trgt "${_trgt}_cythonize_pyx")
+    python_add_library(${_trgt} MODULE WITH_SOABI ${_generated_src})
+    if(BUILD_DPCTL_EXT_SYCL)
+        add_sycl_to_target(TARGET ${_trgt} SOURCES ${_generated_src})
+        target_compile_options(${_trgt} PRIVATE -fno-sycl-id-queries-fit-in-int)
+        target_link_options(${_trgt} PRIVATE -fsycl-device-code-split=per_kernel)
+        if(DPCTL_OFFLOAD_COMPRESS)
+            target_link_options(${_trgt} PRIVATE --offload-compress)
+        endif()
+        if(_dpctl_sycl_targets)
+            # make fat binary
+            target_compile_options(
+                ${_trgt}
+                PRIVATE ${_dpctl_sycl_target_compile_options}
+            )
+            target_link_options(${_trgt} PRIVATE ${_dpctl_sycl_target_link_options})
+        endif()
+    endif()
+    target_link_libraries(${_trgt} PRIVATE Python::NumPy)
+    if(DPCTL_GENERATE_COVERAGE)
+        target_compile_definitions(${_trgt} PRIVATE CYTHON_TRACE=1 CYTHON_TRACE_NOGIL=1)
+        if(BUILD_DPCTL_EXT_SYCL)
+            target_compile_options(${_trgt} PRIVATE -fno-sycl-use-footer)
+        endif()
+    endif()
+    target_link_libraries(${_trgt} PRIVATE DPCTLSyclInterface)
+    set(_linker_options "LINKER:${DPCTL_LDFLAGS}")
+    target_link_options(${_trgt} PRIVATE ${_linker_options})
+    get_filename_component(_name_wle ${_generated_src} NAME_WLE)
+    get_filename_component(_generated_src_dir ${_generated_src} DIRECTORY)
+    set(_generated_public_h "${_generated_src_dir}/${_name_wle}.h")
+    set(_generated_api_h "${_generated_src_dir}/${_name_wle}_api.h")
+
+    # TODO: create separate folder inside build folder that contains only
+    #   headers related to this target and appropriate folder structure to
+    #   eliminate shadow dependencies
+    get_filename_component(_generated_src_dir_dir ${_generated_src_dir} DIRECTORY)
+    # TODO: do not set directory if we did not generate header
+    target_include_directories(${_trgt} INTERFACE ${_generated_src_dir_dir})
+    set(_rpath_value "$ORIGIN")
+    if(BUILD_DPCTL_EXT_RELATIVE_PATH)
+        set(_rpath_value "${_rpath_value}/${BUILD_DPCTL_EXT_RELATIVE_PATH}")
+    endif()
+    if(DPCTL_WITH_REDIST)
+        set(_rpath_value "${_rpath_value}:${_rpath_value}/../../..")
+    endif()
+    set_target_properties(${_trgt} PROPERTIES INSTALL_RPATH ${_rpath_value})
+
+    install(TARGETS ${_trgt} LIBRARY DESTINATION ${_dest})
+    install(
+        FILES ${_generated_api_h}
+        # TODO: revert to `${CMAKE_INSTALL_PREFIX}/dpctl/include/${_dest}`
+        DESTINATION ${CMAKE_INSTALL_PREFIX}/dpctl_ext/include/${_dest}
+        OPTIONAL
+    )
+    install(
+        FILES ${_generated_public_h}
+        # TODO: revert to `${CMAKE_INSTALL_PREFIX}/dpctl/include/${_dest}`
+        DESTINATION ${CMAKE_INSTALL_PREFIX}/dpctl_ext/include/${_dest}
+        OPTIONAL
+    )
+    if(DPCTL_GENERATE_COVERAGE)
+        get_filename_component(_original_src_dir ${_src} DIRECTORY)
+        file(RELATIVE_PATH _rel_dir ${CMAKE_SOURCE_DIR} ${_original_src_dir})
+        install(FILES ${_generated_src} DESTINATION ${CMAKE_INSTALL_PREFIX}/${_rel_dir})
+    endif()
+
+    # Create target with headers only, because python is managing all the
+    # library imports at runtime
+    set(_trgt_headers ${_trgt}_headers)
+    add_library(${_trgt_headers} INTERFACE)
+    add_dependencies(${_trgt_headers} ${_trgt})
+    get_target_property(_trgt_headers_dir ${_trgt} INTERFACE_INCLUDE_DIRECTORIES)
+    target_include_directories(${_trgt_headers} INTERFACE ${_trgt_headers_dir})
+endfunction()
+
+add_subdirectory(tensor)

dpctl_ext/__init__.py

@@ -0,0 +1,27 @@
+# *****************************************************************************
+# Copyright (c) 2026, Intel Corporation
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+# - Redistributions of source code must retain the above copyright notice,
+#   this list of conditions and the following disclaimer.
+# - Redistributions in binary form must reproduce the above copyright notice,
+#   this list of conditions and the following disclaimer in the documentation
+#   and/or other materials provided with the distribution.
+# - Neither the name of the copyright holder nor the names of its contributors
+#   may be used to endorse or promote products derived from this software
+#   without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+# THE POSSIBILITY OF SUCH DAMAGE.
+# *****************************************************************************