Fix a FIXME :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53789 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86TargetAsmInfo.cpp b/lib/Target/X86/X86TargetAsmInfo.cpp
index 0e634c6..f7443c3 100644
--- a/lib/Target/X86/X86TargetAsmInfo.cpp
+++ b/lib/Target/X86/X86TargetAsmInfo.cpp
@@ -148,6 +148,8 @@
   // FIXME: Why don't always use this section?
   if (is64Bit) {
     SixteenByteConstantSection = "\t.literal16\n";
+    SixteenByteConstantSection_ = getUnnamedSection("\t.literal16\n",
+                                                    SectionFlags::Mergeable);
   }
   ReadOnlySection = "\t.const\n";