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[CMake] Add LLVM_BUILD_INSTRUMENTED option to enable building with -fprofile-instr-generate

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This is the first step in supporting PGO data generation via CMake. I've marked the option as advanced and experimental until it is fleshed out further.

llvm-svn: 255298
This commit is contained in:
Chris Bieneman 2015-12-10 21:19:07 +00:00
parent ea27e92765
commit 28da4411df
1 changed files with 8 additions and 0 deletions
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8
cmake/modules/HandleLLVMOptions.cmake
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@ -587,6 +587,14 @@ if(LLVM_ENABLE_EH AND NOT LLVM_ENABLE_RTTI)
message(FATAL_ERROR "Exception handling requires RTTI. You must set LLVM_ENABLE_RTTI to ON")
endif()
option(LLVM_BUILD_INSTRUMENTED "Build LLVM and tools with PGO instrumentation (experimental)" Off)
mark_as_advanced(LLVM_BUILD_INSTRUMENTED)
append_if(LLVM_BUILD_INSTRUMENTED "-fprofile-instr-generate"
CMAKE_CXX_FLAGS
CMAKE_C_FLAGS
CMAKE_EXE_LINKER_FLAGS
CMAKE_SHARED_LINKER_FLAGS)
# Plugin support
# FIXME: Make this configurable.
if(WIN32 OR CYGWIN)