function(clr_pgo_unknown_arch) if (WIN32) message(FATAL_ERROR "Only AMD64, ARM and I386 are supported for PGO") else() message(FATAL_ERROR "PGO not currently supported on the current platform") endif() endfunction(clr_pgo_unknown_arch) # Adds Profile Guided Optimization (PGO) flags to the current target function(add_pgo TargetName) if(WIN32) set(ProfileFileName "${TargetName}.pgd") else(WIN32) set(ProfileFileName "${TargetName}.profdata") endif(WIN32) set(CLR_CMAKE_OPTDATA_PACKAGEWITHRID "optimization.${CLR_CMAKE_TARGET_OS}-${CLR_CMAKE_TARGET_ARCH}.PGO.CoreCLR") # On case-sensitive file systems, NuGet packages are restored to lowercase paths string(TOLOWER "${CLR_CMAKE_OPTDATA_PACKAGEWITHRID}/${CLR_CMAKE_OPTDATA_VERSION}" OptDataVersionedSubPath) file(TO_NATIVE_PATH "${CLR_CMAKE_PACKAGES_DIR}/${OptDataVersionedSubPath}/data/${ProfileFileName}" ProfilePath ) if(CLR_CMAKE_PGO_INSTRUMENT) if(WIN32) set_property(TARGET ${TargetName} APPEND_STRING PROPERTY LINK_FLAGS_RELEASE " /LTCG /GENPROFILE") set_property(TARGET ${TargetName} APPEND_STRING PROPERTY LINK_FLAGS_RELWITHDEBINFO " /LTCG /GENPROFILE") else(WIN32) if(UPPERCASE_CMAKE_BUILD_TYPE STREQUAL RELEASE OR UPPERCASE_CMAKE_BUILD_TYPE STREQUAL RELWITHDEBINFO) target_compile_options(${TargetName} PRIVATE -flto -fprofile-instr-generate) set_property(TARGET ${TargetName} APPEND_STRING PROPERTY LINK_FLAGS " -flto -fuse-ld=gold -fprofile-instr-generate") endif(UPPERCASE_CMAKE_BUILD_TYPE STREQUAL RELEASE OR UPPERCASE_CMAKE_BUILD_TYPE STREQUAL RELWITHDEBINFO) endif(WIN32) else(CLR_CMAKE_PGO_INSTRUMENT) # If we don't have profile data availble, gracefully fall back to a non-PGO opt build if(EXISTS ${ProfilePath}) if(WIN32) set_property(TARGET ${TargetName} APPEND_STRING PROPERTY LINK_FLAGS_RELEASE " /LTCG /USEPROFILE:PGD=${ProfilePath}") set_property(TARGET ${TargetName} APPEND_STRING PROPERTY LINK_FLAGS_RELWITHDEBINFO " /LTCG /USEPROFILE:PGD=${ProfilePath}") else(WIN32) if(UPPERCASE_CMAKE_BUILD_TYPE STREQUAL RELEASE OR UPPERCASE_CMAKE_BUILD_TYPE STREQUAL RELWITHDEBINFO) if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 3.6) if(HAVE_LTO) target_compile_options(${TargetName} PRIVATE -flto -fprofile-instr-use=${ProfilePath} -Wno-profile-instr-out-of-date) set_property(TARGET ${TargetName} APPEND_STRING PROPERTY LINK_FLAGS " -flto -fuse-ld=gold -fprofile-instr-use=${ProfilePath}") else(HAVE_LTO) message(WARNING "LTO is not supported, skipping profile guided optimizations") endif(HAVE_LTO) else(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 3.6) message(WARNING "PGO is not supported; Clang 3.6 or later is required for profile guided optimizations") endif(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 3.6) endif(UPPERCASE_CMAKE_BUILD_TYPE STREQUAL RELEASE OR UPPERCASE_CMAKE_BUILD_TYPE STREQUAL RELWITHDEBINFO) endif(WIN32) endif(EXISTS ${ProfilePath}) endif(CLR_CMAKE_PGO_INSTRUMENT) endfunction(add_pgo) if(WIN32) if(CLR_CMAKE_PGO_INSTRUMENT) # Instrumented PGO binaries on Windows introduce an additional runtime dependency, pgort.dll. # Make sure we copy it next to the installed product to make it easier to redistribute the package. string(SUBSTRING ${CMAKE_VS_PLATFORM_TOOLSET} 1 -1 VS_PLATFORM_VERSION_NUMBER) set(PGORT_FILENAME "pgort${VS_PLATFORM_VERSION_NUMBER}.dll") get_filename_component(PATH_CXX_ROOTDIR ${CMAKE_CXX_COMPILER} DIRECTORY) if(CLR_CMAKE_PLATFORM_ARCH_I386) set(PATH_VS_PGORT_DLL "${PATH_CXX_ROOTDIR}/${PGORT_FILENAME}") elseif(CLR_CMAKE_PLATFORM_ARCH_AMD64) set(PATH_VS_PGORT_DLL "${PATH_CXX_ROOTDIR}/../amd64/${PGORT_FILENAME}") elseif(CLR_CMAKE_PLATFORM_ARCH_ARM) set(PATH_VS_PGORT_DLL "${PATH_CXX_ROOTDIR}/../arm/${PGORT_FILENAME}") else() clr_pgo_unknown_arch() endif() if (EXISTS ${PATH_VS_PGORT_DLL}) message(STATUS "Found PGO runtime: ${PATH_VS_PGORT_DLL}") install(PROGRAMS ${PATH_VS_PGORT_DLL} DESTINATION .) else() message(FATAL_ERROR "file not found: ${PATH_VS_PGORT_DLL}") endif() endif(CLR_CMAKE_PGO_INSTRUMENT) endif(WIN32)