diff options
Diffstat (limited to 'pgosupport.cmake')
| -rw-r--r-- | pgosupport.cmake | 25 |
1 files changed, 16 insertions, 9 deletions
diff --git a/pgosupport.cmake b/pgosupport.cmake index 90bcbc3876..e92923fcb0 100644 --- a/pgosupport.cmake +++ b/pgosupport.cmake @@ -11,17 +11,18 @@ 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/${ProfileFileName}" ProfilePath ) - # NuGet packages are restored to lowercase paths - string(TOLOWER "${ProfilePath}" ProfilePath) if(CLR_CMAKE_PGO_INSTRUMENT) if(WIN32) @@ -41,10 +42,16 @@ function(add_pgo TargetName) 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if(HAVE_LTO) - target_compile_options(${TargetName} PRIVATE -flto -fprofile-instr-use=${ProfilePath} -Wno-profile-instr-out-of-date) - set_property(TARGET ${TargetName} APPEND_STRING PROPERTY LINK_FLAGS " -flto -fuse-ld=gold -fprofile-instr-use=${ProfilePath}") - endif(HAVE_LTO) + if(NOT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if(HAVE_LTO) + target_compile_options(${TargetName} PRIVATE -flto -fprofile-instr-use=${ProfilePath} -Wno-profile-instr-out-of-date) + set_property(TARGET ${TargetName} APPEND_STRING PROPERTY LINK_FLAGS " -flto -fuse-ld=gold -fprofile-instr-use=${ProfilePath}") + else(HAVE_LTO) +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}) |