1 function(tf_get_absolute_path path base final_path)
2 if (IS_ABSOLUTE ${path})
3 set(${final_path} ${path} PARENT_SCOPE)
5 set(${final_path} ${base}/${path} PARENT_SCOPE)
9 function(tf_get_model model final_path)
10 string(FIND ${model} "http:" pos_http)
11 string(FIND ${model} "https:" pos_https)
12 if (${pos_http} EQUAL 0 OR ${pos_https} EQUAL 0)
13 message("Downloading model " ${model})
14 string(FIND ${model} "/" fname_start REVERSE)
15 math(EXPR fname_start "${fname_start}+1")
16 string(SUBSTRING ${model} ${fname_start}+1 -1 fname)
17 message("Model archive: " ${fname})
18 file(DOWNLOAD ${model} ${CMAKE_CURRENT_BINARY_DIR}/${fname})
19 file(ARCHIVE_EXTRACT INPUT
20 ${CMAKE_CURRENT_BINARY_DIR}/${fname}
21 DESTINATION ${CMAKE_CURRENT_BINARY_DIR}/${fname}_model)
22 set(${final_path} ${CMAKE_CURRENT_BINARY_DIR}/${fname}_model/model PARENT_SCOPE)
24 tf_get_absolute_path(${model} ${CMAKE_CURRENT_BINARY_DIR} model_path)
25 set(${final_path} ${model_path} PARENT_SCOPE)
29 # Generate a mock model for tests.
30 function(generate_mock_model generator output)
31 tf_get_absolute_path(${generator} ${CMAKE_CURRENT_SOURCE_DIR} generator_absolute_path)
32 tf_get_absolute_path(${output} ${CMAKE_CURRENT_BINARY_DIR} output_absolute_path)
33 message(WARNING "Autogenerated mock models should not be used in production builds.")
34 execute_process(COMMAND ${Python3_EXECUTABLE}
35 ${generator_absolute_path}
36 ${output_absolute_path}
37 WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
41 # Run the tensorflow compiler (saved_model_cli) on the saved model in the
42 # ${model} directory, looking for the ${tag_set} tag set, and the SignatureDef
43 # ${signature_def_key}.
44 # Produce a pair of files called ${fname}.h and ${fname}.o in the
45 # ${CMAKE_CURRENT_BINARY_DIR}. The generated header will define a C++ class
46 # called ${cpp_class} - which may be a namespace-qualified class name.
47 function(tf_compile model tag_set signature_def_key fname cpp_class hdr_file obj_file)
48 tf_get_absolute_path(${model} ${CMAKE_CURRENT_BINARY_DIR} LLVM_ML_MODELS_ABSOLUTE)
49 message("Using model at " ${LLVM_ML_MODELS_ABSOLUTE})
50 add_custom_command(OUTPUT ${obj_file} ${hdr_file}
51 COMMAND ${TENSORFLOW_AOT_COMPILER} aot_compile_cpu
52 --multithreading false
53 --dir ${LLVM_ML_MODELS_ABSOLUTE}
55 --signature_def_key ${signature_def_key}
56 --output_prefix ${prefix}
57 --cpp_class ${cpp_class}
58 --target_triple ${LLVM_HOST_TRIPLE}
61 # Aggregate the objects so that results of different tf_compile calls may be
62 # grouped into one target.
63 set(GENERATED_OBJS ${GENERATED_OBJS} ${obj_file} PARENT_SCOPE)
64 set_source_files_properties(${obj_file} PROPERTIES
65 GENERATED 1 EXTERNAL_OBJECT 1)
67 set(GENERATED_HEADERS ${GENERATED_HEADERS} ${hdr_file} PARENT_SCOPE)
68 set_source_files_properties(${hdr_file} PROPERTIES
73 function(tf_find_and_compile model default_url default_path test_model_generator tag_set signature_def_key fname cpp_class)
74 set(prefix ${CMAKE_CURRENT_BINARY_DIR}/${fname})
75 set(obj_file ${prefix}.o)
76 set(hdr_file ${prefix}.h)
77 string(TOUPPER ${fname} fname_allcaps)
78 set(override_header ${LLVM_OVERRIDE_MODEL_HEADER_${fname_allcaps}})
79 set(override_object ${LLVM_OVERRIDE_MODEL_OBJECT_${fname_allcaps}})
80 # If the user specified overrides, that indicates intent to use AOT and we
81 # don't care what the model path is
82 if (EXISTS "${override_header}" AND EXISTS "${override_object}")
83 configure_file(${override_header} ${hdr_file} COPYONLY)
84 configure_file(${override_object} ${obj_file} COPYONLY)
85 message(STATUS "Using provided header " ${hdr_file} " and object " ${obj_file} "
86 files for model " ${fname})
87 set(GENERATED_OBJS ${GENERATED_OBJS} ${obj_file})
88 set(GENERATED_HEADERS ${GENERATED_HEADERS} ${hdr_file})
89 elseif("${model}" STREQUAL "none")
90 message(STATUS "Will skip enabling mlgo for ${fname}")
93 if ("${model}" STREQUAL "download")
94 # Crash if the user wants to download a model but a URL is set to "TO_BE_UPDATED"
95 if ("${default_url}" STREQUAL "<UNSPECIFIED>")
96 message(FATAL_ERROR "Model path was set to 'download' but there is no"
97 " model url currently specified in cmake. You can generate a model"
98 " using, for example, the tools at http://github.com/google/ml-compiler-opt."
99 " Some reference models are also periodically released there.")
102 set(model ${default_url})
105 if ("${model}" STREQUAL "autogenerate")
106 set(model ${default_path}-autogenerated)
107 generate_mock_model(${test_model_generator} ${model})
110 tf_get_model(${model} LLVM_ML_MODELS_ABSOLUTE)
111 tf_compile(${LLVM_ML_MODELS_ABSOLUTE} ${tag_set} ${signature_def_key} ${fname} ${cpp_class} ${hdr_file} ${obj_file})
114 set(GeneratedMLSources ${GeneratedMLSources} ${GENERATED_OBJS} ${GENERATED_HEADERS} PARENT_SCOPE)
115 set(MLDeps ${MLDeps} tf_xla_runtime PARENT_SCOPE)
116 set(MLLinkDeps ${MLLinkDeps} tf_xla_runtime PARENT_SCOPE)
117 add_compile_definitions(LLVM_HAVE_TF_AOT_${fname_allcaps})