diff options
| author | Igor Kudrin <ikudrin@accesssoftek.com> | 2017-11-27 05:51:10 +0000 |
|---|---|---|
| committer | Igor Kudrin <ikudrin@accesssoftek.com> | 2017-11-27 05:51:10 +0000 |
| commit | 22593d2bbcaaea4a374558531ab5f7040e51ebd4 (patch) | |
| tree | 3d872d8b78e50e752ab337d9c80425460cf389b1 /lld/ELF/MarkLive.cpp | |
| parent | bbb2fc08a6a0c6482a415c590d0244e90178ff80 (diff) | |
[ELF] Do not keep symbols if they referenced only from discarded sections.
This patch also ensures that in case of "--as-needed" is used,
DT_NEEDED entries are not created if they are required only by
these eliminated symbols.
Differential Revision: https://reviews.llvm.org/D38790
Diffstat (limited to 'lld/ELF/MarkLive.cpp')
| -rw-r--r-- | lld/ELF/MarkLive.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lld/ELF/MarkLive.cpp b/lld/ELF/MarkLive.cpp index 3520abeff37..e619a955b7f 100644 --- a/lld/ELF/MarkLive.cpp +++ b/lld/ELF/MarkLive.cpp @@ -64,6 +64,12 @@ 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; |