Revert r319008, "[ELF] Do not keep symbols if they referenced only from discarded sections."

and r319051, "Add a missing test."

r319008 broke the LTO bots;
r319051 depends on changes in r319008.

1 files changed, 0 insertions, 6 deletions

diff --git a/lld/ELF/MarkLive.cpp b/lld/ELF/MarkLive.cpp
index e619a955b7f..3520abeff37 100644
--- a/lld/ELF/MarkLive.cpp
+++ b/lld/ELF/MarkLive.cpp
@@ -64,12 +64,6 @@ static void resolveReloc(InputSectionBase &Sec, RelT &Rel,
                          std::function<void(InputSectionBase *, uint64_t)> Fn) {
   Symbol &B = Sec.getFile<ELFT>()->getRelocTargetSym(Rel);
 
-  // If a symbol is referenced in a live section, it is used.
-  B.Used = true;
-  if (auto *SS = dyn_cast<SharedSymbol>(&B))
-    if (!SS->isWeak())
-      SS->getFile<ELFT>()->IsNeeded = true;
-
   if (auto *D = dyn_cast<Defined>(&B)) {
     if (!D->Section)
       return;