Remove DefinedCommon::Section.

Since CommonInputSection is a singleton class, we don't need
to store pointers to all DefinedCommon symbols.

llvm-svn: 277410

4 files changed, 5 insertions, 9 deletions

diff --git a/lld/ELF/InputSection.cpp b/lld/ELF/InputSection.cpp
index 28caacbff82..baa2e918619 100644
--- a/lld/ELF/InputSection.cpp
+++ b/lld/ELF/InputSection.cpp
@@ -687,7 +687,6 @@ CommonInputSection<ELFT>::CommonInputSection(
 
     // Compute symbol offset relative to beginning of input section.
     Sym->Offset = Hdr.sh_size;
-    Sym->Section = this;
     Hdr.sh_size += Sym->Size;
   }
 }
diff --git a/lld/ELF/OutputSections.cpp b/lld/ELF/OutputSections.cpp
index 2b409ff4fc2..bf065d3197e 100644
--- a/lld/ELF/OutputSections.cpp
+++ b/lld/ELF/OutputSections.cpp
@@ -1448,7 +1448,7 @@ SymbolTableSection<ELFT>::getOutputSection(SymbolBody *Sym) {
     break;
   }
   case SymbolBody::DefinedCommonKind:
-    return cast<DefinedCommon<ELFT>>(Sym)->Section->OutSec;
+    return CommonInputSection<ELFT>::X->OutSec;
   case SymbolBody::SharedKind:
     if (cast<SharedSymbol<ELFT>>(Sym)->needsCopy())
       return Out<ELFT>::Bss;
diff --git a/lld/ELF/Symbols.cpp b/lld/ELF/Symbols.cpp
index 6d7e7978c71..b1056f8d508 100644
--- a/lld/ELF/Symbols.cpp
+++ b/lld/ELF/Symbols.cpp
@@ -63,10 +63,10 @@ static typename ELFT::uint getSymVA(const SymbolBody &Body,
       return VA - Out<ELFT>::TlsPhdr->p_vaddr;
     return VA;
   }
-  case SymbolBody::DefinedCommonKind: {
-    auto &D = cast<DefinedCommon<ELFT>>(Body);
-    return D.Section->OutSec->getVA() + D.Section->OutSecOff + D.Offset;
-  }
+  case SymbolBody::DefinedCommonKind:
+    return CommonInputSection<ELFT>::X->OutSec->getVA() +
+           CommonInputSection<ELFT>::X->OutSecOff +
+           cast<DefinedCommon<ELFT>>(Body).Offset;
   case SymbolBody::SharedKind: {
     auto &SS = cast<SharedSymbol<ELFT>>(Body);
     if (!SS.NeedsCopyOrPltAddr)
diff --git a/lld/ELF/Symbols.h b/lld/ELF/Symbols.h
index f8b5f463ba2..a1170f4febc 100644
--- a/lld/ELF/Symbols.h
+++ b/lld/ELF/Symbols.h
@@ -184,9 +184,6 @@ public:
   uint64_t Alignment;
 
   uint64_t Size;
-
-  // Virtual input section for common symbols.
-  CommonInputSection<ELFT> *Section;
 };
 
 // Regular defined symbols read from object file symbol tables.