Simplify mapping from relocation sections to relocated sections.

Just store the section in MCSectionELF. This avoids multiple hash lookups.

This will also be used by ARM_EXIDX.

llvm-svn: 234139

1 files changed, 7 insertions, 5 deletions

diff --git a/llvm/lib/MC/MCContext.cpp b/llvm/lib/MC/MCContext.cpp
index 34932ccd33a..211f1640652 100644
--- a/llvm/lib/MC/MCContext.cpp
+++ b/llvm/lib/MC/MCContext.cpp
@@ -279,14 +279,15 @@ void MCContext::renameELFSection(const MCSectionELF *Section, StringRef Name) {
 
 const MCSectionELF *
 MCContext::createELFRelSection(StringRef Name, unsigned Type, unsigned Flags,
-                               unsigned EntrySize, const MCSymbol *Group) {
+                               unsigned EntrySize, const MCSymbol *Group,
+                               const MCSectionELF *Associated) {
   StringMap<bool>::iterator I;
   bool Inserted;
   std::tie(I, Inserted) = ELFRelSecNames.insert(std::make_pair(Name, true));
 
   return new (*this)
       MCSectionELF(I->getKey(), Type, Flags, SectionKind::getReadOnly(),
-                   EntrySize, Group, true, nullptr);
+                   EntrySize, Group, true, nullptr, Associated);
 }
 
 const MCSectionELF *MCContext::getELFSection(StringRef Section, unsigned Type,
@@ -318,8 +319,9 @@ const MCSectionELF *MCContext::getELFSection(StringRef Section, unsigned Type,
   if (BeginSymName)
     Begin = createTempSymbol(BeginSymName, false);
 
-  MCSectionELF *Result = new (*this) MCSectionELF(
-      CachedName, Type, Flags, Kind, EntrySize, GroupSym, UniqueID, Begin);
+  MCSectionELF *Result =
+      new (*this) MCSectionELF(CachedName, Type, Flags, Kind, EntrySize,
+                               GroupSym, UniqueID, Begin, nullptr);
   Entry.second = Result;
   return Result;
 }
@@ -327,7 +329,7 @@ const MCSectionELF *MCContext::getELFSection(StringRef Section, unsigned Type,
 const MCSectionELF *MCContext::CreateELFGroupSection() {
   MCSectionELF *Result = new (*this)
       MCSectionELF(".group", ELF::SHT_GROUP, 0, SectionKind::getReadOnly(), 4,
-                   nullptr, ~0, nullptr);
+                   nullptr, ~0, nullptr, nullptr);
   return Result;
 }