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Don't make PDBs by default in Release mode

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Introduce the LLVM_ENABLE_PDB option so that users can request them
explicitly instead.

Add /OPT:REF and /OPT:ICF back, which /DEBUG disables by default.

Differential Revision: https://reviews.llvm.org/D43156

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@325296 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Kleckner 2018-02-15 21:25:23 +00:00
parent 048f392b85
commit ff74bbe2b9
1 changed files with 11 additions and 4 deletions
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15
cmake/modules/HandleLLVMOptions.cmake
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@ -353,11 +353,18 @@ if( MSVC )
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,