Teresa Johnson a5aad4bd67 ThinLTO: add early "dead-stripping" on the Index ... Summary: Using the linker-supplied list of "preserved" symbols, we can compute the list of "dead" symbols, i.e. the one that are not reachable from a "preserved" symbol transitively on the reference graph. Right now we are using this information to mark these functions as non-eligible for import. The impact is two folds: - Reduction of compile time: we don't import these functions anywhere or import the function these symbols are calling. - The limited number of import/export leads to better internalization. Patch originally by Mehdi Amini. Reviewers: mehdi_amini, pcc Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D23488 llvm-svn: 291177		2017-01-05 21:34:18 +00:00
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Reader	ThinLTO: add early "dead-stripping" on the Index	2017-01-05 21:34:18 +00:00
Writer	ThinLTO: add early "dead-stripping" on the Index	2017-01-05 21:34:18 +00:00
CMakeLists.txt
LLVMBuild.txt