-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 "${TargetName}.pgd")
else(WIN32)
- # Clang/LLVM uses one profdata file for the entire repo
- set(ProfileFileName "coreclr.profdata")
+ set(ProfileFileName "${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
- "${CLR_CMAKE_PACKAGES_DIR}/${CLR_CMAKE_OPTDATA_PACKAGEWITHRID}/${CLR_CMAKE_OPTDATA_VERSION}/data/${ProfileFileName}"
+ "${CLR_CMAKE_PACKAGES_DIR}/${OptDataVersionedSubPath}/data/${ProfileFileName}"
ProfilePath
)
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 ${TargetName} APPEND_STRING PROPERTY LINK_FLAGS " -flto -fuse-ld=gold -fprofile-instr-generate")
+ target_compile_options(${TargetName} PRIVATE -flto -fprofile-instr-generate=/tmp/${TargetName}-%p.profdata)
+ set_property(TARGET ${TargetName} APPEND_STRING PROPERTY LINK_FLAGS " -flto -fuse-ld=gold -fprofile-instr-generate=/tmp/${TargetName}-%p.profdata")
endif(UPPERCASE_CMAKE_BUILD_TYPE STREQUAL RELEASE OR UPPERCASE_CMAKE_BUILD_TYPE STREQUAL RELWITHDEBINFO)
endif(WIN32)
- else(CLR_CMAKE_PGO_INSTRUMENT)
+ elseif(CLR_CMAKE_PGO_OPTIMIZE)
# If we don't have profile data availble, gracefully fall back to a non-PGO opt build
- if(EXISTS ${ProfilePath})
+ if(NOT EXISTS ${ProfilePath})
+ message("PGO data file NOT found: ${ProfilePath}")
+ else(NOT 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(HAVE_LTO)
- target_compile_options(${TargetName} PRIVATE -flto -fprofile-instr-use=${ProfilePath})
- set_property(TARGET ${TargetName} APPEND_STRING PROPERTY LINK_FLAGS " -flto -fuse-ld=gold -fprofile-instr-use=${ProfilePath}")
- endif(HAVE_LTO)
+ 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 -Wno-profile-instr-unprofiled)
+ 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(NOT 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<ver>.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)