append("/Zc:inline" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
- # Generate PDB even in release for profiling.
- if (uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE")
+ # Allow users to request PDBs in release mode. CMake offeres the
+ # RelWithDebInfo configuration, but it uses different optimization settings
+ # (/Ob1 vs /Ob2 or -O2 vs -O3). LLVM provides this flag so that users can get
+ # PDBs without changing codegen.
+ option(LLVM_ENABLE_PDB OFF)
+ if (LLVM_ENABLE_PDB AND uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE")
append("/Zi" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
- append("/DEBUG" CMAKE_EXE_LINKER_FLAGS CMAKE_MODULE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS)
- endif (uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE")
+ # /DEBUG disables linker GC and ICF, but we want those in Release mode.
+ append("/DEBUG /OPT:REF /OPT:ICF"
+ CMAKE_EXE_LINKER_FLAGS CMAKE_MODULE_LINKER_FLAGS
+ CMAKE_SHARED_LINKER_FLAGS)
+ endif()
# /Zc:strictStrings is incompatible with VS12's (Visual Studio 2013's)
# debug mode headers. Instead of only enabling them in VS2013's debug mode,