Rename DBG_LABEL PROLOG_LABEL, because it's only used during prolog emission and
thus is a much more meaningful name.

llvm-svn: 108563
diff --git a/llvm/lib/Target/PowerPC/PPCInstrInfo.cpp b/llvm/lib/Target/PowerPC/PPCInstrInfo.cpp
index 7773fc6..90e3472 100644
--- a/llvm/lib/Target/PowerPC/PPCInstrInfo.cpp
+++ b/llvm/lib/Target/PowerPC/PPCInstrInfo.cpp
@@ -686,7 +686,7 @@
     const char *AsmStr = MI->getOperand(0).getSymbolName();
     return getInlineAsmLength(AsmStr, *MF->getTarget().getMCAsmInfo());
   }
-  case PPC::DBG_LABEL:
+  case PPC::PROLOG_LABEL:
   case PPC::EH_LABEL:
   case PPC::GC_LABEL:
   case PPC::DBG_VALUE: