[MC] Generalize MCContext's SectionSymbols field.

Change SectionSymbols so that it doesn't hard-code ELF types, so that
it can be used for non-ELF targets.

llvm-svn: 288607

diff --git a/llvm/include/llvm/MC/MCContext.h b/llvm/include/llvm/MC/MCContext.h
index 4c13673..2ce2780 100644 (file)
--- a/llvm/include/llvm/MC/MCContext.h
+++ b/llvm/include/llvm/MC/MCContext.h
@@ -82,9 +82,9 @@ namespace llvm {
     /// Bindings of names to symbols.
     SymbolTable Symbols;
 
-    /// ELF sections can have a corresponding symbol. This maps one to the
+    /// Sections can have a corresponding symbol. This maps one to the
     /// other.
-    DenseMap<const MCSectionELF *, MCSymbolELF *> SectionSymbols;
+    DenseMap<const MCSection *, MCSymbol *> SectionSymbols;
 
     /// A mapping from a local label number and an instance count to a symbol.
     /// For example, in the assembly

diff --git a/llvm/lib/MC/MCContext.cpp b/llvm/lib/MC/MCContext.cpp
index 77fe015..afe8ee8 100644 (file)
--- a/llvm/lib/MC/MCContext.cpp
+++ b/llvm/lib/MC/MCContext.cpp
@@ -125,15 +125,15 @@ MCSymbol *MCContext::getOrCreateSymbol(const Twine &Name) {
 }
 
 MCSymbolELF *MCContext::getOrCreateSectionSymbol(const MCSectionELF &Section) {
-  MCSymbolELF *&Sym = SectionSymbols[&Section];
+  MCSymbol *&Sym = SectionSymbols[&Section];
   if (Sym)
-    return Sym;
+    return cast<MCSymbolELF>(Sym);
 
   StringRef Name = Section.getSectionName();
   auto NameIter = UsedNames.insert(std::make_pair(Name, false)).first;
   Sym = new (&*NameIter, *this) MCSymbolELF(&*NameIter, /*isTemporary*/ false);
 
-  return Sym;
+  return cast<MCSymbolELF>(Sym);
 }
 
 MCSymbol *MCContext::getOrCreateFrameAllocSymbol(StringRef FuncName,