Use newly added next() and prior() utility functions.

[oota-llvm.git] / lib / Target / X86 / X86RegisterInfo.cpp

diff --git a/lib/Target/X86/X86RegisterInfo.cpp b/lib/Target/X86/X86RegisterInfo.cpp
index 3031762288d9c6b75fbdf72989c45acd618079dd..b2bf61ad3ed82d30e2979e65def1a215a1049396 100644 (file)
--- a/lib/Target/X86/X86RegisterInfo.cpp
+++ b/lib/Target/X86/X86RegisterInfo.cpp
@@ -24,6 +24,7 @@
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/Target/TargetFrameInfo.h"
 #include "Support/CommandLine.h"
+#include "Support/STLExtras.h"
 
 namespace llvm {
 
@@ -223,7 +224,7 @@ int X86RegisterInfo::emitEpilogue(MachineFunction &MF,
                                   MachineBasicBlock &MBB) const {
   unsigned oldSize = MBB.size();
   const MachineFrameInfo *MFI = MF.getFrameInfo();
-  MachineBasicBlock::iterator MBBI = MBB.end(); --MBBI;
+  MachineBasicBlock::iterator MBBI = prior(MBB.end());
   MachineInstr *MI;
   assert(MBBI->getOpcode() == X86::RET &&
          "Can only insert epilog into returning blocks");