Don't force relaxation of AdvanceLoc instructions on OS X. gdb is happy with
the smaller encoding and this cuts 270336 bytes from a release version of
clang and 1246272 bytes from a debug build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131067 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCAssembler.cpp b/lib/MC/MCAssembler.cpp
index 8360fc9..527a63c 100644
--- a/lib/MC/MCAssembler.cpp
+++ b/lib/MC/MCAssembler.cpp
@@ -759,8 +759,7 @@
   SmallString<8> &Data = DF.getContents();
   Data.clear();
   raw_svector_ostream OSE(Data);
-  const TargetAsmInfo &AsmInfo = getContext().getTargetAsmInfo();
-  MCDwarfFrameEmitter::EncodeAdvanceLoc(AddrDelta, OSE, AsmInfo);
+  MCDwarfFrameEmitter::EncodeAdvanceLoc(AddrDelta, OSE);
   OSE.flush();
   return OldSize != Data.size();
 }