Tobias Edler von Koch 5ffce2cd5d [LTO] Restore original linkage of externals prior to splitting ... Summary: This is a companion patch for http://reviews.llvm.org/D16124. Internalized symbols increase the size of strongly-connected components in SCC-based module splitting and thus reduce the amount of parallelism. This patch records the original linkage of non-local symbols prior to internalization and then restores it just before splitting/CodeGen. This is also useful for cases where the linker requires symbols to remain external, for instance, so they can be placed according to linker script rules. It's currently under its own flag (-restore-globals) but should eventually share a common flag with D16124. Reviewers: joker.eph, pcc Subscribers: slarin, llvm-commits, joker.eph Differential Revision: http://reviews.llvm.org/D16229 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@258100 91177308-0d34-0410-b5e6-96231b3b80d8		2016-01-18 23:24:54 +00:00
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X86	[LTO] Restore original linkage of externals prior to splitting	2016-01-18 23:24:54 +00:00