Mark .eh_frame sections as live by default. NFC.

This change eliminates a string comparison from the
garbage collector.

llvm-svn: 256378

2 files changed, 6 insertions, 5 deletions

diff --git a/lld/ELF/InputSection.cpp b/lld/ELF/InputSection.cpp
index f28c87ce4af..71078cfb6db 100644
--- a/lld/ELF/InputSection.cpp
+++ b/lld/ELF/InputSection.cpp
@@ -253,7 +253,12 @@ SplitInputSection<ELFT>::SplitInputSection(
 template <class ELFT>
 EHInputSection<ELFT>::EHInputSection(ObjectFile<ELFT> *F,
                                      const Elf_Shdr *Header)
-    : SplitInputSection<ELFT>(F, Header, InputSectionBase<ELFT>::EHFrame) {}
+    : SplitInputSection<ELFT>(F, Header, InputSectionBase<ELFT>::EHFrame) {
+  // Mark .eh_frame sections as live by default because there are
+  // usually no relocations that point to .eh_frames. Otherwise,
+ // the garbage collector would drop all .eh_frame sections.
+  this->Live = true;
+}
 
 template <class ELFT>
 bool EHInputSection<ELFT>::classof(const InputSectionBase<ELFT> *S) {
diff --git a/lld/ELF/MarkLive.cpp b/lld/ELF/MarkLive.cpp
index c44220a981a..88ec4f634d9 100644
--- a/lld/ELF/MarkLive.cpp
+++ b/lld/ELF/MarkLive.cpp
@@ -120,10 +120,6 @@ template <class ELFT> void lld::elf2::markLive(SymbolTable<ELFT> *Symtab) {
         continue;
       if (isReserved(Sec))
         Enqueue(Sec);
-      else if (Sec->getSectionName() == ".eh_frame")
-        // .eh_frame is special. It should be marked live so that we don't
-        // drop it, but it should not keep any section alive.
-        Sec->Live = true;
     }
   }