[llvm] r255298 - [CMake] Add LLVM_BUILD_INSTRUMENTED option to enable building with -fprofile-instr-generate

[Chris Bieneman via llvm-commits]

Author: cbieneman
Date: Thu Dec 10 15:19:07 2015
New Revision: 255298

URL: http://llvm.org/viewvc/llvm-project?rev=255298&view=rev
Log:
[CMake] Add LLVM_BUILD_INSTRUMENTED option to enable building with -fprofile-instr-generate

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.

Modified:
    llvm/trunk/cmake/modules/HandleLLVMOptions.cmake

Modified: llvm/trunk/cmake/modules/HandleLLVMOptions.cmake
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/cmake/modules/HandleLLVMOptions.cmake?rev=255298&r1=255297&r2=255298&view=diff
==============================================================================
--- llvm/trunk/cmake/modules/HandleLLVMOptions.cmake (original)
+++ llvm/trunk/cmake/modules/HandleLLVMOptions.cmake Thu Dec 10 15:19:07 2015
@@ -587,6 +587,14 @@ if(LLVM_ENABLE_EH AND NOT LLVM_ENABLE_RT
   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)