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 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 if (LLVM_ENABLE_DAGISEL_COV) 27 list(FIND ARGN "-gen-dag-isel" idx) 28 if( NOT idx EQUAL -1 ) 29 list(APPEND LLVM_TABLEGEN_FLAGS "-instrument-coverage") 30 endif() 31 endif() 32 33 # We need both _TABLEGEN_TARGET and _TABLEGEN_EXE in the DEPENDS list 34 # (both the target and the file) to have .inc files rebuilt on 35 # a tablegen change, as cmake does not propagate file-level dependencies 36 # of custom targets. See the following ticket for more information: 37 # https://cmake.org/Bug/view.php?id=15858 38 # The dependency on both, the target and the file, produces the same 39 # dependency twice in the result file when 40 # ("${${project}_TABLEGEN_TARGET}" STREQUAL "${${project}_TABLEGEN_EXE}") 41 # but lets us having smaller and cleaner code here. 42 add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp 43 # Generate tablegen output in a temporary file. 44 COMMAND ${${project}_TABLEGEN_EXE} ${ARGN} -I ${CMAKE_CURRENT_SOURCE_DIR} 45 ${LLVM_TABLEGEN_FLAGS} 46 ${LLVM_TARGET_DEFINITIONS_ABSOLUTE} 47 -o ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp 48 # The file in LLVM_TARGET_DEFINITIONS may be not in the current 49 # directory and local_tds may not contain it, so we must 50 # explicitly list it here: 51 DEPENDS ${${project}_TABLEGEN_TARGET} ${${project}_TABLEGEN_EXE} 52 ${local_tds} ${global_tds} 53 ${LLVM_TARGET_DEFINITIONS_ABSOLUTE} 54 COMMENT "Building ${ofn}..." 55 ) 56 add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${ofn} 57 # Only update the real output file if there are any differences. 58 # This prevents recompilation of all the files depending on it if there 59 # aren't any. 60 COMMAND ${CMAKE_COMMAND} -E copy_if_different 61 ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp 62 ${CMAKE_CURRENT_BINARY_DIR}/${ofn} 63 DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp 64 COMMENT "Updating ${ofn}..." 65 ) 66 67 # `make clean' must remove all those generated files: 68 set_property(DIRECTORY APPEND 69 PROPERTY ADDITIONAL_MAKE_CLEAN_FILES ${ofn}.tmp ${ofn}) 70 71 set(TABLEGEN_OUTPUT ${TABLEGEN_OUTPUT} ${CMAKE_CURRENT_BINARY_DIR}/${ofn} PARENT_SCOPE) 72 set_source_files_properties(${CMAKE_CURRENT_BINARY_DIR}/${ofn} PROPERTIES 73 GENERATED 1) 74 endfunction() 75 76 # Creates a target for publicly exporting tablegen dependencies. 77 function(add_public_tablegen_target target) 78 if(NOT TABLEGEN_OUTPUT) 79 message(FATAL_ERROR "Requires tablegen() definitions as TABLEGEN_OUTPUT.") 80 endif() 81 add_custom_target(${target} 82 DEPENDS ${TABLEGEN_OUTPUT}) 83 if(LLVM_COMMON_DEPENDS) 84 add_dependencies(${target} ${LLVM_COMMON_DEPENDS}) 85 endif() 86 set_target_properties(${target} PROPERTIES FOLDER "Tablegenning") 87 set(LLVM_COMMON_DEPENDS ${LLVM_COMMON_DEPENDS} ${target} PARENT_SCOPE) 88 endfunction() 89 90 if(LLVM_USE_HOST_TOOLS) 91 llvm_ExternalProject_BuildCmd(tblgen_build_cmd LLVMSupport 92 ${LLVM_NATIVE_BUILD} 93 CONFIGURATION Release) 94 add_custom_command(OUTPUT LIB_LLVMTABLEGEN 95 COMMAND ${tblgen_build_cmd} 96 DEPENDS CONFIGURE_LLVM_NATIVE 97 WORKING_DIRECTORY ${LLVM_NATIVE_BUILD} 98 COMMENT "Building libLLVMTableGen for native TableGen..." 99 USES_TERMINAL) 100 add_custom_target(NATIVE_LIB_LLVMTABLEGEN DEPENDS LIB_LLVMTABLEGEN) 101 endif(LLVM_USE_HOST_TOOLS) 102 103 macro(add_tablegen target project) 104 set(${target}_OLD_LLVM_LINK_COMPONENTS ${LLVM_LINK_COMPONENTS}) 105 set(LLVM_LINK_COMPONENTS ${LLVM_LINK_COMPONENTS} TableGen) 106 107 if(NOT XCODE) 108 # FIXME: It leaks to user, callee of add_tablegen. 109 set(LLVM_ENABLE_OBJLIB ON) 110 endif() 111 112 add_llvm_executable(${target} DISABLE_LLVM_LINK_LLVM_DYLIB ${ARGN}) 113 set(LLVM_LINK_COMPONENTS ${${target}_OLD_LLVM_LINK_COMPONENTS}) 114 115 set(${project}_TABLEGEN "${target}" CACHE 116 STRING "Native TableGen executable. Saves building one when cross-compiling.") 117 118 # Upgrade existing LLVM_TABLEGEN setting. 119 if(${project} STREQUAL LLVM) 120 if(${LLVM_TABLEGEN} STREQUAL tblgen) 121 set(LLVM_TABLEGEN "${target}" CACHE 122 STRING "Native TableGen executable. Saves building one when cross-compiling." 123 FORCE) 124 endif() 125 endif() 126 127 # Effective tblgen executable to be used: 128 set(${project}_TABLEGEN_EXE ${${project}_TABLEGEN} PARENT_SCOPE) 129 set(${project}_TABLEGEN_TARGET ${${project}_TABLEGEN} PARENT_SCOPE) 130 131 if(LLVM_USE_HOST_TOOLS) 132 if( ${${project}_TABLEGEN} STREQUAL "${target}" ) 133 if (NOT CMAKE_CONFIGURATION_TYPES) 134 set(${project}_TABLEGEN_EXE "${LLVM_NATIVE_BUILD}/bin/${target}") 135 else() 136 set(${project}_TABLEGEN_EXE "${LLVM_NATIVE_BUILD}/Release/bin/${target}") 137 endif() 138 set(${project}_TABLEGEN_EXE ${${project}_TABLEGEN_EXE} PARENT_SCOPE) 139 140 llvm_ExternalProject_BuildCmd(tblgen_build_cmd ${target} 141 ${LLVM_NATIVE_BUILD} 142 CONFIGURATION Release) 143 add_custom_command(OUTPUT ${${project}_TABLEGEN_EXE} 144 COMMAND ${tblgen_build_cmd} 145 DEPENDS ${target} NATIVE_LIB_LLVMTABLEGEN 146 WORKING_DIRECTORY ${LLVM_NATIVE_BUILD} 147 COMMENT "Building native TableGen..." 148 USES_TERMINAL) 149 add_custom_target(${project}-tablegen-host DEPENDS ${${project}_TABLEGEN_EXE}) 150 set(${project}_TABLEGEN_TARGET ${project}-tablegen-host PARENT_SCOPE) 151 endif() 152 endif() 153 154 if (${project} STREQUAL LLVM AND NOT LLVM_INSTALL_TOOLCHAIN_ONLY) 155 if(${target} IN_LIST LLVM_DISTRIBUTION_COMPONENTS OR 156 NOT LLVM_DISTRIBUTION_COMPONENTS) 157 set(export_to_llvmexports EXPORT LLVMExports) 158 endif() 159 160 install(TARGETS ${target} 161 ${export_to_llvmexports} 162 RUNTIME DESTINATION ${LLVM_TOOLS_INSTALL_DIR}) 163 endif() 164 set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS ${target}) 165 endmacro() 166
