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authorDaniel Podder <dpodder@gmail.com>2016-10-04 08:39:49 (GMT)
committerJan Vorlicek <janvorli@microsoft.com>2016-10-04 08:39:49 (GMT)
commit114b58869def96c720d0c2fd9b77ceccdc924b96 (patch)
tree91445052c408051a7582b8a891b2166162e38bc6 /pgosupport.cmake
parent4d6710d76ba222b1bf9aaef9b475a3229f827824 (diff)
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Add PGO GENPROFILE support to coreclr and clrjit (#7423)
* Add PGO GENPROFILE support to coreclr and clrjit Update the cmake build system to enable support for Profile Guided Optimization (PGO) on Windows, and enable this feature for two target binaries (coreclr and clrjit). With this change, toggle between instrumented and profile-optimized settings for target binaries by passing pgoinstrument argument to the build.cmd Assume profile-optimized mode by default. Fall back to regular non-PGO optimized builds if profile data is not available.
Diffstat (limited to 'pgosupport.cmake')
-rw-r--r--pgosupport.cmake68
1 files changed, 68 insertions, 0 deletions
diff --git a/pgosupport.cmake b/pgosupport.cmake
new file mode 100644
index 0000000..015eed6
--- /dev/null
+++ b/pgosupport.cmake
@@ -0,0 +1,68 @@
+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 "${TargetName}.pgd")
+ endif(WIN32)
+
+ file(TO_NATIVE_PATH
+ "${CLR_CMAKE_PACKAGES_DIR}/Microsoft.DotNet.OptimizationData.Coreclr/${CLR_CMAKE_TARGET_OS}.${CLR_CMAKE_TARGET_ARCH}/${ProfileFileName}"
+ ProfilePath
+ )
+
+ # Enable PGO only for optimized configs
+ set(ConfigTypeList RELEASE RELWITHDEBINFO)
+
+ foreach(ConfigType IN LISTS ConfigTypeList)
+ set(LinkFlagsProperty "LINK_FLAGS_${ConfigType}")
+ if(CLR_CMAKE_PGO_INSTRUMENT)
+ if(WIN32)
+ set_property(TARGET ${TargetName} APPEND_STRING PROPERTY ${LinkFlagsProperty} "/LTCG /GENPROFILE")
+ 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 ${LinkFlagsProperty} "/LTCG /USEPROFILE:PGD=${ProfilePath}")
+ endif(WIN32)
+ endif(EXISTS ${ProfilePath})
+ endif(CLR_CMAKE_PGO_INSTRUMENT)
+ endforeach(ConfigType)
+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)