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 5 include(LLVMExternalProjectUtils) 6 7 if(LLVM_MAIN_INCLUDE_DIR) 8 set(LLVM_TABLEGEN_FLAGS -I ${LLVM_MAIN_INCLUDE_DIR}) 9 endif() 10 11 function(tablegen project ofn) 12 # Validate calling context. 13 if(NOT ${project}_TABLEGEN_EXE) 14 message(FATAL_ERROR "${project}_TABLEGEN_EXE not set") 15 endif() 16 17 # Use depfile instead of globbing arbitrary *.td(s) 18 # DEPFILE is available for Ninja Generator with CMake>=3.7. 19 if(CMAKE_GENERATOR STREQUAL "Ninja" AND NOT CMAKE_VERSION VERSION_LESS 3.7) 20 # Make output path relative to build.ninja, assuming located on 21 # ${CMAKE_BINARY_DIR}. 22 # CMake emits build targets as relative paths but Ninja doesn't identify 23 # absolute path (in *.d) as relative path (in build.ninja) 24 # Note that tblgen is executed on ${CMAKE_BINARY_DIR} as working directory. 25 file(RELATIVE_PATH ofn_rel 26 ${CMAKE_BINARY_DIR} ${CMAKE_CURRENT_BINARY_DIR}/${ofn}) 27 set(additional_cmdline 28 -o ${ofn_rel}.tmp 29 -d ${ofn_rel}.d 30 WORKING_DIRECTORY ${CMAKE_BINARY_DIR} 31 DEPFILE ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.d 32 ) 33 set(local_tds) 34 set(global_tds) 35 else() 36 file(GLOB local_tds "*.td") 37 file(GLOB_RECURSE global_tds "${LLVM_MAIN_INCLUDE_DIR}/llvm/*.td") 38 set(additional_cmdline 39 -o ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp 40 ) 41 endif() 42 43 if (IS_ABSOLUTE ${LLVM_TARGET_DEFINITIONS}) 44 set(LLVM_TARGET_DEFINITIONS_ABSOLUTE ${LLVM_TARGET_DEFINITIONS}) 45 else() 46 set(LLVM_TARGET_DEFINITIONS_ABSOLUTE 47 ${CMAKE_CURRENT_SOURCE_DIR}/${LLVM_TARGET_DEFINITIONS}) 48 endif() 49 if (LLVM_ENABLE_DAGISEL_COV) 50 list(FIND ARGN "-gen-dag-isel" idx) 51 if( NOT idx EQUAL -1 ) 52 list(APPEND LLVM_TABLEGEN_FLAGS "-instrument-coverage") 53 endif() 54 endif() 55 56 # We need both _TABLEGEN_TARGET and _TABLEGEN_EXE in the DEPENDS list 57 # (both the target and the file) to have .inc files rebuilt on 58 # a tablegen change, as cmake does not propagate file-level dependencies 59 # of custom targets. See the following ticket for more information: 60 # https://cmake.org/Bug/view.php?id=15858 61 # The dependency on both, the target and the file, produces the same 62 # dependency twice in the result file when 63 # ("${${project}_TABLEGEN_TARGET}" STREQUAL "${${project}_TABLEGEN_EXE}") 64 # but lets us having smaller and cleaner code here. 65 add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp 66 # Generate tablegen output in a temporary file. 67 COMMAND ${${project}_TABLEGEN_EXE} ${ARGN} -I ${CMAKE_CURRENT_SOURCE_DIR} 68 ${LLVM_TABLEGEN_FLAGS} 69 ${LLVM_TARGET_DEFINITIONS_ABSOLUTE} 70 ${additional_cmdline} 71 # The file in LLVM_TARGET_DEFINITIONS may be not in the current 72 # directory and local_tds may not contain it, so we must 73 # explicitly list it here: 74 DEPENDS ${${project}_TABLEGEN_TARGET} ${${project}_TABLEGEN_EXE} 75 ${local_tds} ${global_tds} 76 ${LLVM_TARGET_DEFINITIONS_ABSOLUTE} 77 COMMENT "Building ${ofn}..." 78 ) 79 add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${ofn} 80 # Only update the real output file if there are any differences. 81 # This prevents recompilation of all the files depending on it if there 82 # aren't any. 83 COMMAND ${CMAKE_COMMAND} -E copy_if_different 84 ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp 85 ${CMAKE_CURRENT_BINARY_DIR}/${ofn} 86 DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp 87 COMMENT "Updating ${ofn}..." 88 ) 89 90 # `make clean' must remove all those generated files: 91 set_property(DIRECTORY APPEND 92 PROPERTY ADDITIONAL_MAKE_CLEAN_FILES ${ofn}.tmp ${ofn}) 93 94 set(TABLEGEN_OUTPUT ${TABLEGEN_OUTPUT} ${CMAKE_CURRENT_BINARY_DIR}/${ofn} PARENT_SCOPE) 95 set_source_files_properties(${CMAKE_CURRENT_BINARY_DIR}/${ofn} PROPERTIES 96 GENERATED 1) 97 endfunction() 98 99 # Creates a target for publicly exporting tablegen dependencies. 100 function(add_public_tablegen_target target) 101 if(NOT TABLEGEN_OUTPUT) 102 message(FATAL_ERROR "Requires tablegen() definitions as TABLEGEN_OUTPUT.") 103 endif() 104 add_custom_target(${target} 105 DEPENDS ${TABLEGEN_OUTPUT}) 106 if(LLVM_COMMON_DEPENDS) 107 add_dependencies(${target} ${LLVM_COMMON_DEPENDS}) 108 endif() 109 set_target_properties(${target} PROPERTIES FOLDER "Tablegenning") 110 set(LLVM_COMMON_DEPENDS ${LLVM_COMMON_DEPENDS} ${target} PARENT_SCOPE) 111 endfunction() 112 113 if(LLVM_USE_HOST_TOOLS AND NOT TARGET NATIVE_LIB_LLVMTABLEGEN) 114 llvm_ExternalProject_BuildCmd(tblgen_build_cmd LLVMSupport 115 ${LLVM_NATIVE_BUILD} 116 CONFIGURATION Release) 117 add_custom_command(OUTPUT LIB_LLVMTABLEGEN 118 COMMAND ${tblgen_build_cmd} 119 DEPENDS CONFIGURE_LLVM_NATIVE 120 WORKING_DIRECTORY ${LLVM_NATIVE_BUILD} 121 COMMENT "Building libLLVMTableGen for native TableGen..." 122 USES_TERMINAL) 123 add_custom_target(NATIVE_LIB_LLVMTABLEGEN DEPENDS LIB_LLVMTABLEGEN) 124 endif() 125 126 macro(add_tablegen target project) 127 set(${target}_OLD_LLVM_LINK_COMPONENTS ${LLVM_LINK_COMPONENTS}) 128 set(LLVM_LINK_COMPONENTS ${LLVM_LINK_COMPONENTS} TableGen) 129 130 # CMake-3.9 doesn't let compilation units depend on their dependent libraries. 131 if(NOT (CMAKE_GENERATOR STREQUAL "Ninja" AND NOT CMAKE_VERSION VERSION_LESS 3.9) AND NOT XCODE) 132 # FIXME: It leaks to user, callee of add_tablegen. 133 set(LLVM_ENABLE_OBJLIB ON) 134 endif() 135 136 add_llvm_executable(${target} DISABLE_LLVM_LINK_LLVM_DYLIB ${ARGN}) 137 set(LLVM_LINK_COMPONENTS ${${target}_OLD_LLVM_LINK_COMPONENTS}) 138 139 set(${project}_TABLEGEN "${target}" CACHE 140 STRING "Native TableGen executable. Saves building one when cross-compiling.") 141 142 # Upgrade existing LLVM_TABLEGEN setting. 143 if(${project} STREQUAL LLVM) 144 if(${LLVM_TABLEGEN} STREQUAL tblgen) 145 set(LLVM_TABLEGEN "${target}" CACHE 146 STRING "Native TableGen executable. Saves building one when cross-compiling." 147 FORCE) 148 endif() 149 endif() 150 151 # Effective tblgen executable to be used: 152 set(${project}_TABLEGEN_EXE ${${project}_TABLEGEN} PARENT_SCOPE) 153 set(${project}_TABLEGEN_TARGET ${${project}_TABLEGEN} PARENT_SCOPE) 154 155 if(LLVM_USE_HOST_TOOLS) 156 if( ${${project}_TABLEGEN} STREQUAL "${target}" ) 157 if (NOT CMAKE_CONFIGURATION_TYPES) 158 set(${project}_TABLEGEN_EXE "${LLVM_NATIVE_BUILD}/bin/${target}") 159 else() 160 set(${project}_TABLEGEN_EXE "${LLVM_NATIVE_BUILD}/Release/bin/${target}") 161 endif() 162 set(${project}_TABLEGEN_EXE ${${project}_TABLEGEN_EXE} PARENT_SCOPE) 163 164 llvm_ExternalProject_BuildCmd(tblgen_build_cmd ${target} 165 ${LLVM_NATIVE_BUILD} 166 CONFIGURATION Release) 167 add_custom_command(OUTPUT ${${project}_TABLEGEN_EXE} 168 COMMAND ${tblgen_build_cmd} 169 DEPENDS ${target} NATIVE_LIB_LLVMTABLEGEN 170 WORKING_DIRECTORY ${LLVM_NATIVE_BUILD} 171 COMMENT "Building native TableGen..." 172 USES_TERMINAL) 173 add_custom_target(${project}-tablegen-host DEPENDS ${${project}_TABLEGEN_EXE}) 174 set(${project}_TABLEGEN_TARGET ${project}-tablegen-host PARENT_SCOPE) 175 endif() 176 endif() 177 178 if (${project} STREQUAL LLVM AND NOT LLVM_INSTALL_TOOLCHAIN_ONLY) 179 if(${target} IN_LIST LLVM_DISTRIBUTION_COMPONENTS OR 180 NOT LLVM_DISTRIBUTION_COMPONENTS) 181 set(export_to_llvmexports EXPORT LLVMExports) 182 endif() 183 184 install(TARGETS ${target} 185 ${export_to_llvmexports} 186 RUNTIME DESTINATION ${LLVM_TOOLS_INSTALL_DIR}) 187 endif() 188 set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS ${target}) 189 endmacro() 190
