1# LLVM_TARGET_DEFINITIONS must contain the name of the .td file to process.
2# Extra parameters for `tblgen' may come after `ofn' parameter.
3# Adds the name of the generated file to TABLEGEN_OUTPUT.
4
5function(tablegen project ofn)
6  # Validate calling context.
7  foreach(v
8      ${project}_TABLEGEN_EXE
9      LLVM_MAIN_SRC_DIR
10      LLVM_MAIN_INCLUDE_DIR
11      )
12    if(NOT ${v})
13      message(FATAL_ERROR "${v} not set")
14    endif()
15  endforeach()
16
17  file(GLOB local_tds "*.td")
18  file(GLOB_RECURSE global_tds "${LLVM_MAIN_INCLUDE_DIR}/llvm/*.td")
19
20  if (IS_ABSOLUTE ${LLVM_TARGET_DEFINITIONS})
21    set(LLVM_TARGET_DEFINITIONS_ABSOLUTE ${LLVM_TARGET_DEFINITIONS})
22  else()
23    set(LLVM_TARGET_DEFINITIONS_ABSOLUTE
24      ${CMAKE_CURRENT_SOURCE_DIR}/${LLVM_TARGET_DEFINITIONS})
25  endif()
26  add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp
27    # Generate tablegen output in a temporary file.
28    COMMAND ${${project}_TABLEGEN_EXE} ${ARGN} -I ${CMAKE_CURRENT_SOURCE_DIR}
29    -I ${LLVM_MAIN_SRC_DIR}/lib/Target -I ${LLVM_MAIN_INCLUDE_DIR}
30    ${LLVM_TARGET_DEFINITIONS_ABSOLUTE}
31    -o ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp
32    # The file in LLVM_TARGET_DEFINITIONS may be not in the current
33    # directory and local_tds may not contain it, so we must
34    # explicitly list it here:
35    DEPENDS ${${project}_TABLEGEN_EXE} ${local_tds} ${global_tds}
36    ${LLVM_TARGET_DEFINITIONS_ABSOLUTE}
37    COMMENT "Building ${ofn}..."
38    )
39  add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${ofn}
40    # Only update the real output file if there are any differences.
41    # This prevents recompilation of all the files depending on it if there
42    # aren't any.
43    COMMAND ${CMAKE_COMMAND} -E copy_if_different
44        ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp
45        ${CMAKE_CURRENT_BINARY_DIR}/${ofn}
46    DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp
47    COMMENT "Updating ${ofn}..."
48    )
49
50  # `make clean' must remove all those generated files:
51  set_property(DIRECTORY APPEND
52    PROPERTY ADDITIONAL_MAKE_CLEAN_FILES ${ofn}.tmp ${ofn})
53
54  set(TABLEGEN_OUTPUT ${TABLEGEN_OUTPUT} ${CMAKE_CURRENT_BINARY_DIR}/${ofn} PARENT_SCOPE)
55  set_source_files_properties(${CMAKE_CURRENT_BINARY_DIR}/${ofn}
56    PROPERTIES GENERATED 1)
57endfunction(tablegen)
58
59macro(add_public_tablegen_target target)
60  # Creates a target for publicly exporting tablegen dependencies.
61  if( TABLEGEN_OUTPUT )
62    add_custom_target(${target}
63      DEPENDS ${TABLEGEN_OUTPUT})
64    if (LLVM_COMMON_DEPENDS)
65      add_dependencies(${target} ${LLVM_COMMON_DEPENDS})
66    endif ()
67    set_target_properties(${target} PROPERTIES FOLDER "Tablegenning")
68    list(APPEND LLVM_COMMON_DEPENDS ${target} intrinsics_gen)
69  endif( TABLEGEN_OUTPUT )
70endmacro()
71
72if(CMAKE_CROSSCOMPILING)
73  set(CX_NATIVE_TG_DIR "${CMAKE_BINARY_DIR}/native")
74
75  add_custom_command(OUTPUT ${CX_NATIVE_TG_DIR}
76    COMMAND ${CMAKE_COMMAND} -E make_directory ${CX_NATIVE_TG_DIR}
77    COMMENT "Creating ${CX_NATIVE_TG_DIR}...")
78
79  add_custom_command(OUTPUT ${CX_NATIVE_TG_DIR}/CMakeCache.txt
80    COMMAND ${CMAKE_COMMAND} -UMAKE_TOOLCHAIN_FILE -DCMAKE_BUILD_TYPE=Release
81                             -DLLVM_BUILD_POLLY=OFF
82                             -G "${CMAKE_GENERATOR}" ${CMAKE_SOURCE_DIR}
83    WORKING_DIRECTORY ${CX_NATIVE_TG_DIR}
84    DEPENDS ${CX_NATIVE_TG_DIR}
85    COMMENT "Configuring native TableGen...")
86
87  add_custom_target(ConfigureNativeTableGen DEPENDS ${CX_NATIVE_TG_DIR}/CMakeCache.txt)
88
89  set_directory_properties(PROPERTIES ADDITIONAL_MAKE_CLEAN_FILES ${CX_NATIVE_TG_DIR})
90endif()
91
92macro(add_tablegen target project)
93  set(${target}_OLD_LLVM_LINK_COMPONENTS ${LLVM_LINK_COMPONENTS})
94  set(LLVM_LINK_COMPONENTS ${LLVM_LINK_COMPONENTS} TableGen)
95  add_llvm_utility(${target} ${ARGN})
96  set(LLVM_LINK_COMPONENTS ${${target}_OLD_LLVM_LINK_COMPONENTS})
97
98  set(${project}_TABLEGEN "${target}" CACHE
99      STRING "Native TableGen executable. Saves building one when cross-compiling.")
100
101  # Upgrade existing LLVM_TABLEGEN setting.
102  if(${project} STREQUAL LLVM)
103    if(${LLVM_TABLEGEN} STREQUAL tblgen)
104      set(LLVM_TABLEGEN "${target}" CACHE
105          STRING "Native TableGen executable. Saves building one when cross-compiling."
106          FORCE)
107    endif()
108  endif()
109
110  # Effective tblgen executable to be used:
111  set(${project}_TABLEGEN_EXE ${${project}_TABLEGEN} PARENT_SCOPE)
112
113  if(CMAKE_CROSSCOMPILING)
114    if( ${${project}_TABLEGEN} STREQUAL "${target}" )
115      set(${project}_TABLEGEN_EXE "${CX_NATIVE_TG_DIR}/bin/${target}")
116      set(${project}_TABLEGEN_EXE ${${project}_TABLEGEN_EXE} PARENT_SCOPE)
117
118      add_custom_command(OUTPUT ${${project}_TABLEGEN_EXE}
119        COMMAND ${CMAKE_BUILD_TOOL} ${target}
120        DEPENDS ${CX_NATIVE_TG_DIR}/CMakeCache.txt
121        WORKING_DIRECTORY ${CX_NATIVE_TG_DIR}
122        COMMENT "Building native TableGen...")
123      add_custom_target(${project}NativeTableGen DEPENDS ${${project}_TABLEGEN_EXE})
124      add_dependencies(${project}NativeTableGen ConfigureNativeTableGen)
125
126      add_dependencies(${target} ${project}NativeTableGen)
127    endif()
128  endif()
129
130  if( MINGW )
131    if(CMAKE_SIZEOF_VOID_P MATCHES "8")
132      set_target_properties(${target} PROPERTIES LINK_FLAGS -Wl,--stack,16777216)
133    endif(CMAKE_SIZEOF_VOID_P MATCHES "8")
134  endif( MINGW )
135  if (${project} STREQUAL LLVM AND NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
136    install(TARGETS ${target}
137            EXPORT LLVMExports
138            RUNTIME DESTINATION bin)
139  endif()
140  set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS ${target})
141endmacro()
142