diff --git a/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp b/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
index 69142d7..a32bdf8 100644
--- a/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
+++ b/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
@@ -69,10 +69,8 @@
   StringRef Prefix = ".data.";
   NameData.insert(NameData.begin(), Prefix.begin(), Prefix.end());
   unsigned Flags = ELF::SHF_ALLOC | ELF::SHF_WRITE | ELF::SHF_GROUP;
-  const MCSection *Sec = getContext().getELFSection(NameData,
-                                                    ELF::SHT_PROGBITS,
-                                                    Flags,
-                                                    0, Label->getName());
+  MCSection *Sec = getContext().getELFSection(NameData, ELF::SHT_PROGBITS,
+                                              Flags, 0, Label->getName());
   unsigned Size = TM.getDataLayout()->getPointerSize();
   Streamer.SwitchSection(Sec);
   Streamer.EmitValueToAlignment(TM.getDataLayout()->getPointerABIAlignment());
@@ -201,7 +199,7 @@
   return C;
 }
 
-const MCSection *TargetLoweringObjectFileELF::getExplicitSectionGlobal(
+MCSection *TargetLoweringObjectFileELF::getExplicitSectionGlobal(
     const GlobalValue *GV, SectionKind Kind, Mangler &Mang,
     const TargetMachine &TM) const {
   StringRef SectionName = GV->getSection();
@@ -245,7 +243,7 @@
   return ".data.rel.ro";
 }
 
-static const MCSectionELF *
+static MCSectionELF *
 selectELFSectionForGlobal(MCContext &Ctx, const GlobalValue *GV,
                           SectionKind Kind, Mangler &Mang,
                           const TargetMachine &TM, bool EmitUniqueSection,
@@ -308,7 +306,7 @@
                            EntrySize, Group, UniqueID);
 }
 
-const MCSection *TargetLoweringObjectFileELF::SelectSectionForGlobal(
+MCSection *TargetLoweringObjectFileELF::SelectSectionForGlobal(
     const GlobalValue *GV, SectionKind Kind, Mangler &Mang,
     const TargetMachine &TM) const {
   unsigned Flags = getELFSectionFlags(Kind);
@@ -328,7 +326,7 @@
                                    EmitUniqueSection, Flags, &NextUniqueID);
 }
 
-const MCSection *TargetLoweringObjectFileELF::getSectionForJumpTable(
+MCSection *TargetLoweringObjectFileELF::getSectionForJumpTable(
     const Function &F, Mangler &Mang, const TargetMachine &TM) const {
   // If the function can be removed, produce a unique section so that
   // the table doesn't prevent the removal.
@@ -349,10 +347,9 @@
   return false;
 }
 
-/// getSectionForConstant - Given a mergeable constant with the
-/// specified size and relocation information, return a section that it
-/// should be placed in.
-const MCSection *
+/// Given a mergeable constant with the specified size and relocation
+/// information, return a section that it should be placed in.
+MCSection *
 TargetLoweringObjectFileELF::getSectionForConstant(SectionKind Kind,
                                                    const Constant *C) const {
   if (Kind.isMergeableConst4() && MergeableConst4Section)
@@ -369,11 +366,9 @@
   return DataRelROSection;
 }
 
-static const MCSectionELF *getStaticStructorSection(MCContext &Ctx,
-                                                    bool UseInitArray,
-                                                    bool IsCtor,
-                                                    unsigned Priority,
-                                                    const MCSymbol *KeySym) {
+static MCSectionELF *getStaticStructorSection(MCContext &Ctx, bool UseInitArray,
+                                              bool IsCtor, unsigned Priority,
+                                              const MCSymbol *KeySym) {
   std::string Name;
   unsigned Type;
   unsigned Flags = ELF::SHF_ALLOC | ELF::SHF_WRITE;
@@ -411,13 +406,13 @@
   return Ctx.getELFSection(Name, Type, Flags, 0, COMDAT);
 }
 
-const MCSection *TargetLoweringObjectFileELF::getStaticCtorSection(
+MCSection *TargetLoweringObjectFileELF::getStaticCtorSection(
     unsigned Priority, const MCSymbol *KeySym) const {
   return getStaticStructorSection(getContext(), UseInitArray, true, Priority,
                                   KeySym);
 }
 
-const MCSection *TargetLoweringObjectFileELF::getStaticDtorSection(
+MCSection *TargetLoweringObjectFileELF::getStaticDtorSection(
     unsigned Priority, const MCSymbol *KeySym) const {
   return getStaticStructorSection(getContext(), UseInitArray, false, Priority,
                                   KeySym);
@@ -520,9 +515,8 @@
                        ErrorCode + ".");
 
   // Get the section.
-  const MCSectionMachO *S =
-    getContext().getMachOSection(Segment, Section, TAA, StubSize,
-                                 SectionKind::getDataNoRel());
+  MCSectionMachO *S = getContext().getMachOSection(
+      Segment, Section, TAA, StubSize, SectionKind::getDataNoRel());
   Streamer.SwitchSection(S);
   Streamer.EmitLabel(getContext().
                      getOrCreateSymbol(StringRef("L_OBJC_IMAGE_INFO")));
@@ -540,7 +534,7 @@
                      "' cannot be lowered.");
 }
 
-const MCSection *TargetLoweringObjectFileMachO::getExplicitSectionGlobal(
+MCSection *TargetLoweringObjectFileMachO::getExplicitSectionGlobal(
     const GlobalValue *GV, SectionKind Kind, Mangler &Mang,
     const TargetMachine &TM) const {
   // Parse the section specifier and create it if valid.
@@ -561,8 +555,8 @@
   }
 
   // Get the section.
-  const MCSectionMachO *S =
-    getContext().getMachOSection(Segment, Section, TAA, StubSize, Kind);
+  MCSectionMachO *S =
+      getContext().getMachOSection(Segment, Section, TAA, StubSize, Kind);
 
   // If TAA wasn't set by ParseSectionSpecifier() above,
   // use the value returned by getMachOSection() as a default.
@@ -582,9 +576,9 @@
   return S;
 }
 
-const MCSection *TargetLoweringObjectFileMachO::
-SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
-                       Mangler &Mang, const TargetMachine &TM) const {
+MCSection *TargetLoweringObjectFileMachO::SelectSectionForGlobal(
+    const GlobalValue *GV, SectionKind Kind, Mangler &Mang,
+    const TargetMachine &TM) const {
   checkMachOComdat(GV);
 
   // Handle thread local data.
@@ -649,7 +643,7 @@
   return DataSection;
 }
 
-const MCSection *
+MCSection *
 TargetLoweringObjectFileMachO::getSectionForConstant(SectionKind Kind,
                                                      const Constant *C) const {
   // If this constant requires a relocation, we have to put it in the data
@@ -861,7 +855,7 @@
   return 0;
 }
 
-const MCSection *TargetLoweringObjectFileCOFF::getExplicitSectionGlobal(
+MCSection *TargetLoweringObjectFileCOFF::getExplicitSectionGlobal(
     const GlobalValue *GV, SectionKind Kind, Mangler &Mang,
     const TargetMachine &TM) const {
   int Selection = 0;
@@ -903,10 +897,9 @@
   return ".data";
 }
 
-
-const MCSection *TargetLoweringObjectFileCOFF::
-SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
-                       Mangler &Mang, const TargetMachine &TM) const {
+MCSection *TargetLoweringObjectFileCOFF::SelectSectionForGlobal(
+    const GlobalValue *GV, SectionKind Kind, Mangler &Mang,
+    const TargetMachine &TM) const {
   // If we have -ffunction-sections then we should emit the global value to a
   // uniqued section specifically for it.
   bool EmitUniquedSection;
@@ -971,7 +964,7 @@
   Mang.getNameWithPrefix(OutName, GV, CannotUsePrivateLabel);
 }
 
-const MCSection *TargetLoweringObjectFileCOFF::getSectionForJumpTable(
+MCSection *TargetLoweringObjectFileCOFF::getSectionForJumpTable(
     const Function &F, Mangler &Mang, const TargetMachine &TM) const {
   // If the function can be removed, produce a unique section so that
   // the table doesn't prevent the removal.
@@ -1026,7 +1019,7 @@
 
   // Emit the linker options to the linker .drectve section.  According to the
   // spec, this section is a space-separated string containing flags for linker.
-  const MCSection *Sec = getDrectveSection();
+  MCSection *Sec = getDrectveSection();
   Streamer.SwitchSection(Sec);
   for (unsigned i = 0, e = LinkerOptions->getNumOperands(); i != e; ++i) {
     MDNode *MDOptions = cast<MDNode>(LinkerOptions->getOperand(i));
@@ -1040,13 +1033,13 @@
   }
 }
 
-const MCSection *TargetLoweringObjectFileCOFF::getStaticCtorSection(
+MCSection *TargetLoweringObjectFileCOFF::getStaticCtorSection(
     unsigned Priority, const MCSymbol *KeySym) const {
   return getContext().getAssociativeCOFFSection(
       cast<MCSectionCOFF>(StaticCtorSection), KeySym);
 }
 
-const MCSection *TargetLoweringObjectFileCOFF::getStaticDtorSection(
+MCSection *TargetLoweringObjectFileCOFF::getStaticDtorSection(
     unsigned Priority, const MCSymbol *KeySym) const {
   return getContext().getAssociativeCOFFSection(
       cast<MCSectionCOFF>(StaticDtorSection), KeySym);