diff --git a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index 7106c6a..178bbaa 100644
--- a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -23,8 +23,9 @@
 #include "llvm/CodeGen/DwarfWriter.h"
 #include "llvm/Analysis/DebugInfo.h"
 #include "llvm/MC/MCContext.h"
-#include "llvm/MC/MCStreamer.h"
 #include "llvm/MC/MCInst.h"
+#include "llvm/MC/MCSection.h"
+#include "llvm/MC/MCStreamer.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/FormattedStream.h"
@@ -132,7 +133,7 @@
 
 /// SwitchToSection - Switch to the specified section of the executable if we
 /// are not already in it!
-void AsmPrinter::SwitchToSection(const Section *NS) {
+void AsmPrinter::SwitchToSection(const MCSection *NS) {
   const std::string &NewSection = NS->getName();
 
   // If we're already in this section, we're done.
@@ -308,10 +309,10 @@
 namespace {
   // SectionCPs - Keep track the alignment, constpool entries per Section.
   struct SectionCPs {
-    const Section *S;
+    const MCSection *S;
     unsigned Alignment;
     SmallVector<unsigned, 4> CPEs;
-    SectionCPs(const Section *s, unsigned a) : S(s), Alignment(a) {};
+    SectionCPs(const MCSection *s, unsigned a) : S(s), Alignment(a) {};
   };
 }
 
@@ -347,7 +348,8 @@
     }
     }
 
-    const Section *S =getObjFileLowering().getSectionForMergeableConstant(Kind);
+    const MCSection *S =
+      getObjFileLowering().getSectionForMergeableConstant(Kind);
     
     // The number of sections are small, just do a linear search from the
     // last section to the first.
@@ -419,7 +421,7 @@
   const char *JumpTableDataSection = TAI->getJumpTableDataSection();
   const Function *F = MF.getFunction();
   
-  const Section *FuncSection =
+  const MCSection *FuncSection =
     getObjFileLowering().SectionForGlobal(F, Mang, TM);
 
   bool JTInDiffSection = false;
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index afcd44a..873cdc2 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -14,13 +14,14 @@
 #include "DwarfDebug.h"
 #include "llvm/Module.h"
 #include "llvm/CodeGen/MachineModuleInfo.h"
-#include "llvm/Support/Timer.h"
-#include "llvm/System/Path.h"
+#include "llvm/MC/MCSection.h"
 #include "llvm/Target/TargetAsmInfo.h"
 #include "llvm/Target/TargetData.h"
 #include "llvm/Target/TargetFrameInfo.h"
 #include "llvm/Target/TargetLoweringObjectFile.h"
 #include "llvm/Target/TargetRegisterInfo.h"
+#include "llvm/Support/Timer.h"
+#include "llvm/System/Path.h"
 using namespace llvm;
 
 static TimerGroup &getDwarfTimerGroup() {
@@ -224,7 +225,7 @@
 DwarfDebug::DwarfDebug(raw_ostream &OS, AsmPrinter *A, const TargetAsmInfo *T)
   : Dwarf(OS, A, T, "dbg"), ModuleCU(0),
     AbbreviationsSet(InitAbbreviationsSetSize), Abbreviations(),
-    ValuesSet(InitValuesSetSize), Values(), StringPool(), SectionMap(),
+    ValuesSet(InitValuesSetSize), Values(), StringPool(), 
     SectionSourceLines(), didInitial(false), shouldEmit(false),
     FunctionDbgScope(0), DebugTimer(0) {
   if (TimePassesIsEnabled)
@@ -2132,7 +2133,7 @@
     const std::vector<SrcLineInfo> &LineInfos = SectionSourceLines[j];
 
     if (Asm->isVerbose()) {
-      const Section* S = SectionMap[j + 1];
+      const MCSection *S = SectionMap[j + 1];
       O << '\t' << TAI->getCommentString() << " Section"
         << S->getName() << '\n';
     } else {
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.h b/lib/CodeGen/AsmPrinter/DwarfDebug.h
index a4072f5..af76b0b 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.h
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.h
@@ -120,7 +120,7 @@
 
   /// SectionMap - Provides a unique id per text section.
   ///
-  UniqueVector<const Section*> SectionMap;
+  UniqueVector<const MCSection*> SectionMap;
 
   /// SectionSourceLines - Tracks line numbers per text section.
   ///
diff --git a/lib/CodeGen/ELFWriter.cpp b/lib/CodeGen/ELFWriter.cpp
index 230c5ac..c743832 100644
--- a/lib/CodeGen/ELFWriter.cpp
+++ b/lib/CodeGen/ELFWriter.cpp
@@ -43,6 +43,7 @@
 #include "llvm/CodeGen/MachineCodeEmitter.h"
 #include "llvm/CodeGen/MachineConstantPool.h"
 #include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCSection.h"
 #include "llvm/Target/TargetAsmInfo.h"
 #include "llvm/Target/TargetData.h"
 #include "llvm/Target/TargetELFWriterInfo.h"
@@ -334,8 +335,8 @@
       TM.getTargetLowering()->getObjFileLowering();
 
     // Get the ELF section where this global belongs from TLOF
-    const Section *S = TLOF.SectionForGlobal(GV, Mang, TM);
-    unsigned SectionFlags = getElfSectionFlags(S->getKind());
+    const MCSection *S = TLOF.SectionForGlobal(GV, Mang, TM);
+    unsigned SectionFlags = getElfSectionFlags(((MCSectionELF*)S)->getKind());
 
     // The symbol align should update the section alignment if needed
     const TargetData *TD = TM.getTargetData();