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 if (LLVM_ENABLE_GISEL_COV) 56 list(FIND ARGN "-gen-global-isel" idx) 57 if( NOT idx EQUAL -1 ) 58 list(APPEND LLVM_TABLEGEN_FLAGS "-instrument-gisel-coverage") 59 list(APPEND LLVM_TABLEGEN_FLAGS "-gisel-coverage-file=${LLVM_GISEL_COV_PREFIX}all") 60 endif() 61 endif() 62 63 # We need both _TABLEGEN_TARGET and _TABLEGEN_EXE in the DEPENDS list 64 # (both the target and the file) to have .inc files rebuilt on 65 # a tablegen change, as cmake does not propagate file-level dependencies 66 # of custom targets. See the following ticket for more information: 67 # https://cmake.org/Bug/view.php?id=15858 68 # The dependency on both, the target and the file, produces the same 69 # dependency twice in the result file when 70 # ("${${project}_TABLEGEN_TARGET}" STREQUAL "${${project}_TABLEGEN_EXE}") 71 # but lets us having smaller and cleaner code here. 72 add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp 73 # Generate tablegen output in a temporary file. 74 COMMAND ${${project}_TABLEGEN_EXE} ${ARGN} -I ${CMAKE_CURRENT_SOURCE_DIR} 75 ${LLVM_TABLEGEN_FLAGS} 76 ${LLVM_TARGET_DEFINITIONS_ABSOLUTE} 77 ${additional_cmdline} 78 # The file in LLVM_TARGET_DEFINITIONS may be not in the current 79 # directory and local_tds may not contain it, so we must 80 # explicitly list it here: 81 DEPENDS ${${project}_TABLEGEN_TARGET} ${${project}_TABLEGEN_EXE} 82 ${local_tds} ${global_tds} 83 ${LLVM_TARGET_DEFINITIONS_ABSOLUTE} 84 COMMENT "Building ${ofn}..." 85 ) 86 add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${ofn} 87 # Only update the real output file if there are any differences. 88 # This prevents recompilation of all the files depending on it if there 89 # aren't any. 90 COMMAND ${CMAKE_COMMAND} -E copy_if_different 91 ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp 92 ${CMAKE_CURRENT_BINARY_DIR}/${ofn} 93 DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp 94 COMMENT "Updating ${ofn}..." 95 ) 96 97 # `make clean' must remove all those generated files: 98 set_property(DIRECTORY APPEND 99 PROPERTY ADDITIONAL_MAKE_CLEAN_FILES ${ofn}.tmp ${ofn}) 100 101 set(TABLEGEN_OUTPUT ${TABLEGEN_OUTPUT} ${CMAKE_CURRENT_BINARY_DIR}/${ofn} PARENT_SCOPE) 102 set_source_files_properties(${CMAKE_CURRENT_BINARY_DIR}/${ofn} PROPERTIES 103 GENERATED 1) 104 endfunction() 105 106 # Creates a target for publicly exporting tablegen dependencies. 107 function(add_public_tablegen_target target) 108 if(NOT TABLEGEN_OUTPUT) 109 message(FATAL_ERROR "Requires tablegen() definitions as TABLEGEN_OUTPUT.") 110 endif() 111 add_custom_target(${target} 112 DEPENDS ${TABLEGEN_OUTPUT}) 113 if(LLVM_COMMON_DEPENDS) 114 add_dependencies(${target} ${LLVM_COMMON_DEPENDS}) 115 endif() 116 set_target_properties(${target} PROPERTIES FOLDER "Tablegenning") 117 set(LLVM_COMMON_DEPENDS ${LLVM_COMMON_DEPENDS} ${target} PARENT_SCOPE) 118 endfunction() 119 120 macro(add_tablegen target project) 121 set(${target}_OLD_LLVM_LINK_COMPONENTS ${LLVM_LINK_COMPONENTS}) 122 set(LLVM_LINK_COMPONENTS ${LLVM_LINK_COMPONENTS} TableGen) 123 124 # CMake-3.9 doesn't let compilation units depend on their dependent libraries. 125 if(NOT (CMAKE_GENERATOR STREQUAL "Ninja" AND NOT CMAKE_VERSION VERSION_LESS 3.9) AND NOT XCODE) 126 # FIXME: It leaks to user, callee of add_tablegen. 127 set(LLVM_ENABLE_OBJLIB ON) 128 endif() 129 130 add_llvm_executable(${target} DISABLE_LLVM_LINK_LLVM_DYLIB ${ARGN}) 131 set(LLVM_LINK_COMPONENTS ${${target}_OLD_LLVM_LINK_COMPONENTS}) 132 133 set(${project}_TABLEGEN "${target}" CACHE 134 STRING "Native TableGen executable. Saves building one when cross-compiling.") 135 136 # Upgrade existing LLVM_TABLEGEN setting. 137 if(${project} STREQUAL LLVM) 138 if(${LLVM_TABLEGEN} STREQUAL tblgen) 139 set(LLVM_TABLEGEN "${target}" CACHE 140 STRING "Native TableGen executable. Saves building one when cross-compiling." 141 FORCE) 142 endif() 143 endif() 144 145 # Effective tblgen executable to be used: 146 set(${project}_TABLEGEN_EXE ${${project}_TABLEGEN} PARENT_SCOPE) 147 set(${project}_TABLEGEN_TARGET ${${project}_TABLEGEN} PARENT_SCOPE) 148 149 if(LLVM_USE_HOST_TOOLS) 150 if( ${${project}_TABLEGEN} STREQUAL "${target}" ) 151 if (NOT CMAKE_CONFIGURATION_TYPES) 152 set(${project}_TABLEGEN_EXE "${LLVM_NATIVE_BUILD}/bin/${target}") 153 else() 154 set(${project}_TABLEGEN_EXE "${LLVM_NATIVE_BUILD}/Release/bin/${target}") 155 endif() 156 set(${project}_TABLEGEN_EXE ${${project}_TABLEGEN_EXE} PARENT_SCOPE) 157 158 llvm_ExternalProject_BuildCmd(tblgen_build_cmd ${target} 159 ${LLVM_NATIVE_BUILD} 160 CONFIGURATION Release) 161 add_custom_command(OUTPUT ${${project}_TABLEGEN_EXE} 162 COMMAND ${tblgen_build_cmd} 163 DEPENDS CONFIGURE_LLVM_NATIVE ${target} 164 WORKING_DIRECTORY ${LLVM_NATIVE_BUILD} 165 COMMENT "Building native TableGen..." 166 USES_TERMINAL) 167 add_custom_target(${project}-tablegen-host DEPENDS ${${project}_TABLEGEN_EXE}) 168 set(${project}_TABLEGEN_TARGET ${project}-tablegen-host PARENT_SCOPE) 169 endif() 170 endif() 171 172 if (${project} STREQUAL LLVM AND NOT LLVM_INSTALL_TOOLCHAIN_ONLY) 173 if(${target} IN_LIST LLVM_DISTRIBUTION_COMPONENTS OR 174 NOT LLVM_DISTRIBUTION_COMPONENTS) 175 set(export_to_llvmexports EXPORT LLVMExports) 176 endif() 177 178 install(TARGETS ${target} 179 ${export_to_llvmexports} 180 RUNTIME DESTINATION ${LLVM_TOOLS_INSTALL_DIR}) 181 endif() 182 set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS ${target}) 183 endmacro() 184
