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(parent: 6719e24) | patch
CodeGen: use `llvm.used` for ObjC protocols
authorSaleem Abdulrasool <compnerd@compnerd.org>
Tue, 23 Jan 2018 19:35:51 +0000 (19:35 +0000)
committerSaleem Abdulrasool <compnerd@compnerd.org>
Tue, 23 Jan 2018 19:35:51 +0000 (19:35 +0000)
commitbe2b5cbf5e9403c4d12bd768f15d14193b6530ae
tree5bb16e8ace031782aeb5aaafc73444df507ad275tree | snapshot
parent6719e2418c1d8fc20a6a6b6a0540281736b591d6commit | diff
CodeGen: use `llvm.used` for ObjC protocols

These symbols are supposed to be preserved even by the linker.  Use the
`llvm.used` to ensure that the symbols are not removed by DCE in the
linker.  This should be a no-op change on MachO since the symbols are
annotated as `no_dead_strip`.

llvm-svn: 323247
clang/lib/CodeGen/CGObjCMac.cpp diff | blob | history
clang/test/CodeGenObjC/forward-protocol-metadata-symbols.m diff | blob | history
Domain: System / Toolchain;