[PATCH] D22302: [ThinLTO/gold] Perform index-based weak/linkonce resolution

[Teresa Johnson via llvm-commits]

tejohnson created this revision.
tejohnson added a reviewer: mehdi_amini.
tejohnson added a subscriber: llvm-commits.
Herald added a subscriber: mehdi_amini.

Invoke the weak/linkonce symbol resolution support (already used by
libLTO) that operates via the summary index.

This ensures prevailing linkonce are kept, by making them weak, and
marks preempted copies as available_externally when possible.

With this change, the older support for keeping the prevailing linkonce
(by changing their symbol resolution) is removed.

http://reviews.llvm.org/D22302

Files:
  test/tools/gold/X86/Inputs/thinlto_weak_resolution.ll
  test/tools/gold/X86/thinlto_weak_resolution.ll
  tools/gold/gold-plugin.cpp

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