sink uniquing of sections out of MCContext into the ELF and PECOFF TLOF implementations.
MCContext no longer maintains a string -> section map.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78874 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/TargetLoweringObjectFile.cpp b/lib/Target/TargetLoweringObjectFile.cpp
index e7680c8..00f4ffe 100644
--- a/lib/Target/TargetLoweringObjectFile.cpp
+++ b/lib/Target/TargetLoweringObjectFile.cpp
@@ -280,12 +280,25 @@
//===----------------------------------------------------------------------===//
// ELF
//===----------------------------------------------------------------------===//
+typedef StringMap<const MCSectionELF*> ELFUniqueMapTy;
+
+TargetLoweringObjectFileELF::~TargetLoweringObjectFileELF() {
+ // If we have the section uniquing map, free it.
+ delete (ELFUniqueMapTy*)UniquingMap;
+}
const MCSection *TargetLoweringObjectFileELF::
getELFSection(const char *Name, bool isDirective, SectionKind Kind) const {
- if (MCSection *S = getContext().GetSection(Name))
- return S;
- return MCSectionELF::Create(Name, isDirective, Kind, getContext());
+ // Create the map if it doesn't already exist.
+ if (UniquingMap == 0)
+ UniquingMap = new ELFUniqueMapTy();
+ ELFUniqueMapTy &Map = *(ELFUniqueMapTy*)UniquingMap;
+
+ // Do the lookup, if we have a hit, return it.
+ const MCSectionELF *&Entry = Map[Name];
+ if (Entry) return Entry;
+
+ return Entry = MCSectionELF::Create(Name, isDirective, Kind, getContext());
}
void TargetLoweringObjectFileELF::Initialize(MCContext &Ctx,
@@ -805,12 +818,25 @@
// COFF
//===----------------------------------------------------------------------===//
+typedef StringMap<const MCSectionCOFF*> COFFUniqueMapTy;
+
+TargetLoweringObjectFileCOFF::~TargetLoweringObjectFileCOFF() {
+ delete (COFFUniqueMapTy*)UniquingMap;
+}
+
const MCSection *TargetLoweringObjectFileCOFF::
getCOFFSection(const char *Name, bool isDirective, SectionKind Kind) const {
- if (MCSection *S = getContext().GetSection(Name))
- return S;
- return MCSectionCOFF::Create(Name, isDirective, Kind, getContext());
+ // Create the map if it doesn't already exist.
+ if (UniquingMap == 0)
+ UniquingMap = new MachOUniqueMapTy();
+ COFFUniqueMapTy &Map = *(COFFUniqueMapTy*)UniquingMap;
+
+ // Do the lookup, if we have a hit, return it.
+ const MCSectionCOFF *&Entry = Map[Name];
+ if (Entry) return Entry;
+
+ return Entry = MCSectionCOFF::Create(Name, isDirective, Kind, getContext());
}
void TargetLoweringObjectFileCOFF::Initialize(MCContext &Ctx,