pgosupport.cmake

   1 function(clr_pgo_unknown_arch)
   2     if (WIN32)
   3         message(FATAL_ERROR "Only AMD64, ARM and I386 are supported for PGO")
   4     else()
   5         message(FATAL_ERROR "PGO not currently supported on the current platform")
   6     endif()
   7 endfunction(clr_pgo_unknown_arch)
   8
   9 # Adds Profile Guided Optimization (PGO) flags to the current target
  10 function(add_pgo TargetName)
  11     if(WIN32)
  12         set(ProfileFileName "${TargetName}.pgd")
  13     endif(WIN32)
  14
  15     file(TO_NATIVE_PATH
  16         "${CLR_CMAKE_PACKAGES_DIR}/Microsoft.DotNet.OptimizationData.Coreclr/${CLR_CMAKE_TARGET_OS}.${CLR_CMAKE_TARGET_ARCH}/${ProfileFileName}"
  17         ProfilePath
  18     )
  19
  20     # Enable PGO only for optimized configs
  21     set(ConfigTypeList RELEASE RELWITHDEBINFO)
  22
  23     foreach(ConfigType IN LISTS ConfigTypeList)
  24         set(LinkFlagsProperty "LINK_FLAGS_${ConfigType}")
  25         if(CLR_CMAKE_PGO_INSTRUMENT)
  26             if(WIN32)
  27                 set_property(TARGET ${TargetName} APPEND_STRING PROPERTY ${LinkFlagsProperty} "/LTCG /GENPROFILE")
  28             endif(WIN32)
  29         else(CLR_CMAKE_PGO_INSTRUMENT)
  30             # If we don't have profile data availble, gracefully fall back to a non-PGO opt build
  31             if(EXISTS ${ProfilePath})
  32                 if(WIN32)
  33                     set_property(TARGET ${TargetName} APPEND_STRING PROPERTY ${LinkFlagsProperty} "/LTCG /USEPROFILE:PGD=${ProfilePath}")
  34                 endif(WIN32)
  35             endif(EXISTS ${ProfilePath})
  36         endif(CLR_CMAKE_PGO_INSTRUMENT)
  37     endforeach(ConfigType)
  38 endfunction(add_pgo)
  39
  40 if(WIN32)
  41   if(CLR_CMAKE_PGO_INSTRUMENT)
  42     # Instrumented PGO binaries on Windows introduce an additional runtime dependency, pgort<ver>.dll.
  43     # Make sure we copy it next to the installed product to make it easier to redistribute the package.
  44
  45     string(SUBSTRING ${CMAKE_VS_PLATFORM_TOOLSET} 1 -1 VS_PLATFORM_VERSION_NUMBER)
  46     set(PGORT_FILENAME "pgort${VS_PLATFORM_VERSION_NUMBER}.dll")
  47
  48     get_filename_component(PATH_CXX_ROOTDIR ${CMAKE_CXX_COMPILER} DIRECTORY)
  49
  50     if(CLR_CMAKE_PLATFORM_ARCH_I386)
  51       set(PATH_VS_PGORT_DLL "${PATH_CXX_ROOTDIR}/${PGORT_FILENAME}")
  52     elseif(CLR_CMAKE_PLATFORM_ARCH_AMD64)
  53       set(PATH_VS_PGORT_DLL "${PATH_CXX_ROOTDIR}/../amd64/${PGORT_FILENAME}")
  54     elseif(CLR_CMAKE_PLATFORM_ARCH_ARM)
  55       set(PATH_VS_PGORT_DLL "${PATH_CXX_ROOTDIR}/../arm/${PGORT_FILENAME}")
  56     else()
  57       clr_pgo_unknown_arch()
  58     endif()
  59
  60     if (EXISTS ${PATH_VS_PGORT_DLL})
  61       message(STATUS "Found PGO runtime: ${PATH_VS_PGORT_DLL}")
  62       install(PROGRAMS ${PATH_VS_PGORT_DLL} DESTINATION .)
  63     else()
  64       message(FATAL_ERROR "file not found: ${PATH_VS_PGORT_DLL}")
  65     endif()
  66
  67   endif(CLR_CMAKE_PGO_INSTRUMENT)
  68 endif(WIN32)