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Don't pass -O3 to the linker in debug builds.

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This takes linking clang in a debug build with gold form 19.518925697 to
16.406388685 seconds.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234160 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2015-04-06 14:51:01 +00:00
parent 29072c8fab
commit e104aca94c
1 changed files with 4 additions and 2 deletions
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6
cmake/modules/AddLLVM.cmake
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@ -159,8 +159,10 @@ endif()
function(add_link_opts target_name)
# Pass -O3 to the linker. This enabled different optimizations on different
# linkers.
if(NOT (${CMAKE_SYSTEM_NAME} MATCHES "Darwin" OR WIN32))
# linkers. Don't do it in debug builds since it slows down the linker
# in a context where the optimizations are not important.
if(NOT (${CMAKE_SYSTEM_NAME} MATCHES "Darwin" OR WIN32) AND
NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG")
set_property(TARGET ${target_name} APPEND_STRING PROPERTY
LINK_FLAGS " -Wl,-O3")
endif()